New styles

.code-workspace.code-workspace

@@ -0,0 +1,11 @@
+{
+	"folders": [
+		{
+			"path": "../Speech2Text"
+		},
+		{
+			"path": "."
+		}
+	],
+	"settings": {}
+}

.gitignore

@@ -8,3 +8,17 @@ server/server/data/privatechat.sqlite-wal
 server/server/data/master.key
 client/dist/*
 client/apple-client/WebApp/**
+server/data/master.key
+.vscode/extensions.json
+.aidesigner/*
+!.aidesigner/.gitkeep
+CLAUDE.md
+.mcp.json
+.agents/skills/aidesigner-frontend/SKILL.md
+.agents/skills/aidesigner-frontend/references/api.md
+.agents/skills/aidesigner-frontend/references/frontend-rubric.md
+.claude/agents/aidesigner-frontend.md
+.claude/commands/aidesigner.md
+.claude/skills/aidesigner-frontend/SKILL.md
+.claude/skills/aidesigner-frontend/references/api.md
+.claude/skills/aidesigner-frontend/references/frontend-rubric.md

client/angular.json

@@ -49,6 +49,16 @@
               {
                 "glob": "**/*",
                 "input": "public"
+              },
+              {
+                "glob": "magick.wasm",
+                "input": "node_modules/@imagemagick/magick-wasm/dist",
+                "output": "/"
+              },
+              {
+                "glob": "ort-wasm-simd-threaded.jsep.*",
+                "input": "node_modules/@huggingface/transformers/dist",
+                "output": "/transformers-wasm"
               }
             ],
             "styles": [
@@ -63,8 +73,8 @@
               "budgets": [
                 {
                   "type": "initial",
-                  "maximumWarning": "700kB",
-                  "maximumError": "1MB"
+                  "maximumWarning": "1MB",
+                  "maximumError": "2MB"
                 },
                 {
                   "type": "anyComponentStyle",

client/package.json

@@ -12,22 +12,25 @@
   "private": true,
   "packageManager": "npm@11.10.1",
   "dependencies": {
-    "@angular/common": "^21.2.0",
-    "@angular/compiler": "^21.2.0",
-    "@angular/core": "^21.2.0",
-    "@angular/forms": "^21.2.0",
-    "@angular/platform-browser": "^21.2.0",
-    "@angular/router": "^21.2.0",
+    "@angular/common": "^21.2.8",
+    "@angular/compiler": "^21.2.8",
+    "@angular/core": "^21.2.8",
+    "@angular/forms": "^21.2.8",
+    "@angular/platform-browser": "^21.2.8",
+    "@angular/router": "^21.2.8",
+    "@huggingface/transformers": "^3.8.1",
+    "@imagemagick/magick-wasm": "^0.0.39",
     "bootstrap": "^5.3.8",
-    "rxjs": "~7.8.0",
-    "tslib": "^2.3.0"
+    "ngx-extended-pdf-viewer": "^25.6.4",
+    "rxjs": "~7.8.2",
+    "tslib": "^2.8.1"
   },
   "devDependencies": {
-    "@angular/build": "^21.2.1",
-    "@angular/cli": "^21.2.1",
-    "@angular/compiler-cli": "^21.2.0",
-    "dotenv": "^17.3.1",
-    "prettier": "^3.8.1",
-    "typescript": "~5.9.2"
+    "@angular/build": "^21.2.7",
+    "@angular/cli": "^21.2.7",
+    "@angular/compiler-cli": "^21.2.8",
+    "dotenv": "^17.4.2",
+    "prettier": "^3.8.2",
+    "typescript": "~5.9.3"
   }
 }

client/public/env.js

@@ -1,3 +1,6 @@
 window.__PRIVATECHAT_ENV__ = {
-  "PRIVATECHAT_CLIENT_SERVER_URL": "https://chatter.dubertrand.fr"
+  "PRIVATECHAT_CLIENT_SERVER_URL": "https://chatter.dubertrand.fr",
+  "PRIVATECHAT_CLIENT_WHISPER_MODEL": "Xenova/whisper-small",
+  "PRIVATECHAT_CLIENT_WHISPER_LANGUAGE": "auto",
+  "PRIVATECHAT_CLIENT_TRANSFORMERS_WASM_PATH": "/transformers-wasm/"
 };

client/scripts/write-env.js

@@ -9,6 +9,10 @@ dotenv.config({ path: rootEnvPath });
 
 const runtimeEnv = {
   PRIVATECHAT_CLIENT_SERVER_URL: process.env.PRIVATECHAT_CLIENT_SERVER_URL ?? 'http://localhost:3000',
+  PRIVATECHAT_CLIENT_WHISPER_MODEL: process.env.PRIVATECHAT_CLIENT_WHISPER_MODEL ?? 'Xenova/whisper-small',
+  PRIVATECHAT_CLIENT_WHISPER_LANGUAGE: process.env.PRIVATECHAT_CLIENT_WHISPER_LANGUAGE ?? 'auto',
+  PRIVATECHAT_CLIENT_TRANSFORMERS_WASM_PATH:
+    process.env.PRIVATECHAT_CLIENT_TRANSFORMERS_WASM_PATH ?? '/transformers-wasm/',
 };
 
 const fileContents = `window.__PRIVATECHAT_ENV__ = ${JSON.stringify(runtimeEnv, null, 2)};\n`;

client/src/app/approval-page.component.scss

@@ -1,5 +1,11 @@
 .approval-card {
   border: 1px solid var(--surface-border-soft);
-  border-radius: 1rem;
-  background: var(--panel-soft-background);
+  border-radius: 1.15rem;
+  background: var(--surface-background);
+  transition: border-color 160ms ease, transform 160ms ease;
+}
+
+.approval-card:hover {
+  border-color: color-mix(in srgb, var(--accent-color) 35%, transparent);
+  transform: translateY(-1px);
 }

client/src/app/browser-speech-transcriber.service.ts

@@ -0,0 +1,273 @@
+import { inject, Injectable } from '@angular/core';
+
+import { ChatSessionService } from './chat-session.service';
+import type { DictationLanguage } from './models';
+
+type PrivateChatRuntimeEnv = {
+  PRIVATECHAT_CLIENT_TRANSFORMERS_WASM_PATH?: string;
+  PRIVATECHAT_CLIENT_WHISPER_LANGUAGE?: string;
+  PRIVATECHAT_CLIENT_WHISPER_MODEL?: string;
+};
+
+type AutomaticSpeechRecognitionOutput = {
+  text: string;
+};
+
+type AutomaticSpeechRecognitionPipeline = (
+  audio: Float32Array,
+  options?: {
+    chunk_length_s?: number;
+    stride_length_s?: number;
+    task?: 'transcribe';
+    language?: string;
+  },
+) => Promise<AutomaticSpeechRecognitionOutput | AutomaticSpeechRecognitionOutput[]>;
+
+type TransformersModule = {
+  env: {
+    backends: {
+      onnx: {
+        wasm?: {
+          wasmPaths?: string;
+        };
+      };
+    };
+  };
+  pipeline: (
+    task: string,
+    model: string,
+    options?: {
+      device?: 'wasm' | 'webgpu';
+      dtype?: 'fp32';
+      model_file_name?: string;
+      subfolder?: string;
+    },
+  ) => Promise<unknown>;
+};
+
+const whisperTargetSampleRate = 16_000;
+const defaultWhisperModel = 'Xenova/whisper-small';
+const defaultTransformersWasmPath = '/transformers-wasm/';
+const defaultChunkLengthSeconds = 30;
+const defaultStrideLengthSeconds = 5;
+const whisperLanguageNames: Record<DictationLanguage, string> = {
+  en: 'english',
+  fr: 'french',
+  es: 'spanish',
+};
+
+function readRuntimeEnv(): PrivateChatRuntimeEnv {
+  if (typeof window === 'undefined') {
+    return {};
+  }
+
+  return (window as typeof window & { __PRIVATECHAT_ENV__?: PrivateChatRuntimeEnv }).__PRIVATECHAT_ENV__ ?? {};
+}
+
+function resolveAudioContextConstructor(): typeof AudioContext | null {
+  if (typeof window === 'undefined') {
+    return null;
+  }
+
+  return window.AudioContext
+    ?? (window as typeof window & { webkitAudioContext?: typeof AudioContext }).webkitAudioContext
+    ?? null;
+}
+
+@Injectable({ providedIn: 'root' })
+export class BrowserSpeechTranscriberService {
+  private readonly session = inject(ChatSessionService);
+  private readonly runtimeEnv = readRuntimeEnv();
+  private readonly modelId = this.runtimeEnv.PRIVATECHAT_CLIENT_WHISPER_MODEL?.trim() || defaultWhisperModel;
+  private readonly fallbackLanguage = this.normalizeLanguage(
+    this.runtimeEnv.PRIVATECHAT_CLIENT_WHISPER_LANGUAGE,
+  );
+  private transformersModulePromise: Promise<TransformersModule> | null = null;
+  private pipelinePromise: Promise<AutomaticSpeechRecognitionPipeline> | null = null;
+
+  async preload(): Promise<void> {
+    await this.getPipeline();
+  }
+
+  async transcribe(audioBlob: Blob): Promise<string> {
+    if (audioBlob.size === 0) {
+      return '';
+    }
+
+    const waveform = await this.decodeToWhisperWaveform(audioBlob);
+    const transcriber = await this.getPipeline();
+    const inputLanguage = this.session.currentUser()
+      ? this.session.dictationLanguage()
+      : this.resolveFallbackInputLanguage();
+    const output = await transcriber(waveform, {
+      chunk_length_s: defaultChunkLengthSeconds,
+      stride_length_s: defaultStrideLengthSeconds,
+      task: 'transcribe',
+      language: whisperLanguageNames[inputLanguage],
+    });
+    const transcription = Array.isArray(output) ? output[0] : output;
+    return transcription.text.trim();
+  }
+
+  private async getPipeline(): Promise<AutomaticSpeechRecognitionPipeline> {
+    if (!this.pipelinePromise) {
+      this.pipelinePromise = this.createPreferredPipeline<AutomaticSpeechRecognitionPipeline>(
+        'automatic-speech-recognition',
+        this.modelId,
+      );
+    }
+
+    return await this.pipelinePromise!;
+  }
+
+  private async getTransformersModule(): Promise<TransformersModule> {
+    if (!this.transformersModulePromise) {
+      this.transformersModulePromise = import('@huggingface/transformers') as Promise<TransformersModule>;
+    }
+
+    const transformersModule = await this.transformersModulePromise;
+    const onnxWasmEnv = transformersModule.env.backends.onnx.wasm;
+
+    if (onnxWasmEnv && !onnxWasmEnv.wasmPaths) {
+      onnxWasmEnv.wasmPaths =
+        this.runtimeEnv.PRIVATECHAT_CLIENT_TRANSFORMERS_WASM_PATH?.trim() || defaultTransformersWasmPath;
+    }
+
+    return transformersModule;
+  }
+
+  private async createPreferredPipeline<T>(
+    task: string,
+    model: string,
+    options?: {
+      dtype?: 'fp32';
+      model_file_name?: string;
+      subfolder?: string;
+    },
+  ): Promise<T> {
+    const transformersModule = await this.getTransformersModule();
+    const candidateDevices: Array<'webgpu' | 'wasm'> = this.browserSupportsWebGpu()
+      ? ['webgpu', 'wasm']
+      : ['wasm'];
+    let lastError: unknown = null;
+
+    for (const device of candidateDevices) {
+      try {
+        const pipeline = await transformersModule.pipeline(task, model, {
+          ...options,
+          device,
+        });
+
+        console.info(`[dictation] Loaded ${task} pipeline for ${model} on ${device}.`);
+        return pipeline as T;
+      } catch (error) {
+        lastError = error;
+        console.warn(`[dictation] Could not load ${task} pipeline for ${model} on ${device}.`, error);
+      }
+    }
+
+    throw lastError instanceof Error ? lastError : new Error(`Could not load ${task} pipeline for ${model}.`);
+  }
+
+  private async decodeToWhisperWaveform(audioBlob: Blob): Promise<Float32Array> {
+    const audioContextConstructor = resolveAudioContextConstructor();
+
+    if (!audioContextConstructor) {
+      throw new Error('This browser cannot decode recorded audio for dictation.');
+    }
+
+    const arrayBuffer = await audioBlob.arrayBuffer();
+    const audioContext = new audioContextConstructor();
+
+    try {
+      const audioBuffer = await audioContext.decodeAudioData(arrayBuffer.slice(0));
+      const monoChannel = this.mixToMono(audioBuffer);
+
+      if (audioBuffer.sampleRate === whisperTargetSampleRate) {
+        return monoChannel;
+      }
+
+      return this.resampleMonoChannel(monoChannel, audioBuffer.sampleRate, whisperTargetSampleRate);
+    } catch (error) {
+      throw error instanceof Error
+        ? error
+        : new Error('Could not decode the recorded dictation audio.');
+    } finally {
+      await audioContext.close().catch(() => undefined);
+    }
+  }
+
+  private mixToMono(audioBuffer: AudioBuffer): Float32Array {
+    const mixed = new Float32Array(audioBuffer.length);
+
+    for (let channelIndex = 0; channelIndex < audioBuffer.numberOfChannels; channelIndex += 1) {
+      const channel = audioBuffer.getChannelData(channelIndex);
+
+      for (let sampleIndex = 0; sampleIndex < channel.length; sampleIndex += 1) {
+        mixed[sampleIndex] += channel[sampleIndex];
+      }
+    }
+
+    if (audioBuffer.numberOfChannels > 1) {
+      for (let sampleIndex = 0; sampleIndex < mixed.length; sampleIndex += 1) {
+        mixed[sampleIndex] /= audioBuffer.numberOfChannels;
+      }
+    }
+
+    return mixed;
+  }
+
+  private resampleMonoChannel(
+    monoChannel: Float32Array,
+    sourceSampleRate: number,
+    targetSampleRate: number,
+  ): Float32Array {
+    if (sourceSampleRate === targetSampleRate) {
+      return monoChannel;
+    }
+
+    const targetLength = Math.max(1, Math.round(monoChannel.length * targetSampleRate / sourceSampleRate));
+    const resampled = new Float32Array(targetLength);
+    const positionRatio = sourceSampleRate / targetSampleRate;
+
+    for (let sampleIndex = 0; sampleIndex < targetLength; sampleIndex += 1) {
+      const sourcePosition = sampleIndex * positionRatio;
+      const sourceIndex = Math.floor(sourcePosition);
+      const nextSourceIndex = Math.min(sourceIndex + 1, monoChannel.length - 1);
+      const interpolationWeight = sourcePosition - sourceIndex;
+      const currentValue = monoChannel[sourceIndex] ?? 0;
+      const nextValue = monoChannel[nextSourceIndex] ?? currentValue;
+
+      resampled[sampleIndex] = currentValue + ((nextValue - currentValue) * interpolationWeight);
+    }
+
+    return resampled;
+  }
+
+  private normalizeLanguage(language: string | undefined): string | null {
+    const trimmedLanguage = language?.trim();
+
+    if (!trimmedLanguage || trimmedLanguage.toLowerCase() === 'auto') {
+      return null;
+    }
+
+    return trimmedLanguage;
+  }
+
+  private browserSupportsWebGpu(): boolean {
+    return typeof navigator !== 'undefined' && 'gpu' in navigator;
+  }
+
+  private resolveFallbackInputLanguage(): DictationLanguage {
+    switch (this.fallbackLanguage?.toLowerCase()) {
+      case 'french':
+      case 'fr':
+        return 'fr';
+      case 'spanish':
+      case 'es':
+        return 'es';
+      default:
+        return 'en';
+    }
+  }
+}

client/src/app/chat-page.component.html

@@ -1,49 +1,168 @@
 <main class="chat-shell py-4">
   <div class="container-lg">
     <section class="chat-page panel p-3 p-lg-4">
-      <app-peer-video-modal
-        [visible]="remoteVideoModalVisible()"
-        [stream]="remoteVideoStream()"
-        [title]="(peer()?.displayName ?? 'Peer') + ' webcam'"
-        (closeRequested)="closeRemoteVideoModal()"
-      ></app-peer-video-modal>
+      <app-peer-call-modal
+        [visible]="callModalVisible()"
+        [peerName]="callModalPeer()?.displayName ?? 'Peer'"
+        [callState]="callModalState()"
+        [callMode]="callModalMode()"
+        [statusText]="callModalStatusText()"
+        [localStream]="localCallStream()"
+        [remoteStream]="remoteCallVideoStream()"
+        (acceptRequested)="callModalPeer() && acceptIncomingVoiceCall(callModalPeer()!.id)"
+        (rejectRequested)="callModalPeer() && rejectIncomingVoiceCall(callModalPeer()!.id)"
+        (hangupRequested)="callModalPeer() && endVoiceCall(callModalPeer()!.id)"
+      ></app-peer-call-modal>
       <audio #callAudioElement hidden autoplay playsinline></audio>
 
-      @if (incomingVoiceCallPeer(); as callingPeer) {
-        <div class="call-modal-backdrop">
-          <section class="panel p-4" style="width:min(100%,24rem)" (click)="$event.stopPropagation()">
-            <div class="mb-3">
-              <div>
-                <h2 class="h5 mb-1">Incoming voice call</h2>
-                <p class="small mb-0">{{ callingPeer.displayName }} is calling you.</p>
-              </div>
-            </div>
-            <div class="d-flex flex-wrap gap-2 justify-content-end">
-              <button
-                class="btn btn-success"
-                type="button"
-                (click)="acceptIncomingVoiceCall(callingPeer.id)"
-              >
-                Accept
+      @if (callChoicePeer(); as selectedCallPeer) {
+        <div class="call-choice-backdrop" (click)="closeCallChoice()">
+          <section class="call-choice-card panel p-4" (click)="$event.stopPropagation()">
+            <p class="call-choice-eyebrow">Start a call</p>
+            <h2 class="h5 mb-2">{{ selectedCallPeer.displayName }}</h2>
+            <p class="small mb-3">Choose whether to place a full video call or audio only.</p>
+            <div class="call-choice-actions">
+              <button class="call-choice-button" type="button" (click)="startSelectedCall('video')">
+                <span class="call-choice-icon">📹</span>
+                <span>Video call</span>
               </button>
-              <button
-                class="btn btn-outline-secondary"
-                type="button"
-                (click)="rejectIncomingVoiceCall(callingPeer.id)"
-              >
-                Reject
+              <button class="call-choice-button" type="button" (click)="startSelectedCall('audio')">
+                <span class="call-choice-icon">🎙️</span>
+                <span>Audio only</span>
+              </button>
+            </div>
+            <div class="d-flex justify-content-end mt-3">
+              <button class="btn btn-outline-secondary" type="button" (click)="closeCallChoice()">
+                Cancel
               </button>
             </div>
           </section>
         </div>
       }
 
-      <div class="chat-header d-flex flex-column flex-lg-row justify-content-between align-items-start align-items-lg-center gap-3 mb-4">
-        <div>
-          <a class="back-link" routerLink="/">← Back to dashboard</a>
-          @if (currentUser(); as connectedUser) {
-            <h1 class="h3 mb-1 mt-2">{{ connectedUser.displayName }}</h1>
-            <div class="status-indicators mt-2">
+      @if (conversationModalOpen()) {
+        <div class="conversation-modal-backdrop" (click)="closeConversationModal()">
+          <section class="conversation-modal panel p-3 p-lg-4" (click)="$event.stopPropagation()">
+            <header class="conversation-modal-header">
+              <div>
+                <p class="conversation-modal-eyebrow mb-1">Fullscreen conversation</p>
+                <h2 class="h5 mb-0">{{ displayedPeer()?.displayName ?? 'Conversation' }}</h2>
+              </div>
+              <button
+                class="conversation-modal-close"
+                type="button"
+                (click)="closeConversationModal()"
+                aria-label="Close fullscreen conversation"
+              >
+                ×
+              </button>
+            </header>
+
+            <div #fullscreenConversationContainer class="conversation conversation-modal-body">
+              <ng-container [ngTemplateOutlet]="conversationBubbles"></ng-container>
+            </div>
+          </section>
+        </div>
+      }
+
+      <div class="chat-header mb-4">
+        @if (currentUser(); as connectedUser) {
+          <div class="chat-header-main">
+            <a class="back-link" routerLink="/" aria-label="Back to dashboard">←</a>
+            <h1 class="chat-header-title mb-0">{{ connectedUser.displayName }}</h1>
+            @if (displayedPeer(); as selectedPeer) {
+              <div class="peer-dropdown" (click)="$event.stopPropagation()">
+                <button
+                  class="peer-dropdown-trigger peer-tile"
+                  type="button"
+                  [class.peer-tile-active]="true"
+                  [class.peer-tile-unread]="isPeerUnread(selectedPeer.id)"
+                  (click)="togglePeerDropdown()"
+                  [attr.aria-expanded]="peerDropdownOpen()"
+                  aria-haspopup="listbox"
+                  aria-label="Choose peer"
+                >
+                  <span class="peer-tile-main text-start">
+                    <span class="peer-tile-row">
+                      <span class="peer-tile-title">
+                        <span class="fw-semibold">{{ selectedPeer.displayName }}</span>
+                        @if (isPeerTyping(selectedPeer.id)) {
+                          <span class="peer-typing-dots" aria-label="Typing">
+                            <span></span>
+                            <span></span>
+                            <span></span>
+                          </span>
+                        }
+                      </span>
+                      <span class="peer-tile-indicators">
+                        <span
+                          class="status-led peer-tile-status"
+                          [class.status-led-ok]="selectedPeer.channelState === 'open' || selectedPeer.connectionState === 'connected'"
+                          [class.status-led-offline]="selectedPeer.channelState !== 'open' && selectedPeer.connectionState !== 'connected'"
+                          [attr.aria-label]="
+                            selectedPeer.channelState === 'open' || selectedPeer.connectionState === 'connected'
+                              ? 'Connected'
+                              : 'Disconnected'
+                          "
+                        ></span>
+                        <span class="peer-dropdown-caret" [class.peer-dropdown-caret-open]="peerDropdownOpen()">▾</span>
+                      </span>
+                    </span>
+                  </span>
+                </button>
+
+                @if (peerDropdownOpen()) {
+                  <div class="peer-dropdown-menu" role="listbox">
+                    @for (dropdownPeer of dropdownPeers(); track dropdownPeer.id) {
+                      <article
+                        class="peer-tile"
+                        [class.peer-tile-active]="dropdownPeer.id === peerId()"
+                        [class.peer-tile-unread]="isPeerUnread(dropdownPeer.id)"
+                      >
+                        <button
+                          class="peer-tile-main text-start"
+                          type="button"
+                          (click)="selectPeerFromDropdown(dropdownPeer.id)"
+                        >
+                          <div class="peer-tile-row">
+                            <span class="peer-tile-title">
+                              <span class="fw-semibold">{{ dropdownPeer.displayName }}</span>
+                              @if (isPeerTyping(dropdownPeer.id)) {
+                                <span class="peer-typing-dots" aria-label="Typing">
+                                  <span></span>
+                                  <span></span>
+                                  <span></span>
+                                </span>
+                              }
+                            </span>
+                            <span
+                              class="status-led peer-tile-status"
+                              [class.status-led-ok]="dropdownPeer.channelState === 'open' || dropdownPeer.connectionState === 'connected'"
+                              [class.status-led-offline]="dropdownPeer.channelState !== 'open' && dropdownPeer.connectionState !== 'connected'"
+                              [attr.aria-label]="
+                                dropdownPeer.channelState === 'open' || dropdownPeer.connectionState === 'connected'
+                                  ? 'Connected'
+                                  : 'Disconnected'
+                              "
+                            ></span>
+                          </div>
+                        </button>
+                        <button
+                          class="peer-tile-delete"
+                          type="button"
+                          title="Delete conversation"
+                          aria-label="Delete conversation"
+                          (click)="deleteConversation(dropdownPeer.id, $event)"
+                        >
+                          🗑️
+                        </button>
+                      </article>
+                    }
+                  </div>
+                }
+              </div>
+            }
+            <div class="status-indicators">
               <div class="status-indicator">
                 <span class="status-led" [class.status-led-ok]="indicatorTone(session.signalingState()) === 'ok'" [class.status-led-connecting]="indicatorTone(session.signalingState()) === 'connecting'" [class.status-led-offline]="indicatorTone(session.signalingState()) === 'offline'"></span>
                 <span>Signaling</span>
@@ -59,357 +178,344 @@
                 <span class="status-led" [class.status-led-ok]="indicatorTone(webRtcState()) === 'ok'" [class.status-led-connecting]="indicatorTone(webRtcState()) === 'connecting'" [class.status-led-offline]="indicatorTone(webRtcState()) === 'offline'"></span>
                 <span>WebRTC</span>
               </button>
+              <button
+                class="status-indicator status-indicator-action"
+                type="button"
+                [disabled]="conversation().length === 0"
+                aria-label="Open fullscreen conversation"
+                title="Open fullscreen conversation"
+                (click)="openConversationModal()"
+              >
+                <span class="expand-action-icon" aria-hidden="true">⤢</span>
+              </button>
             </div>
-          } @else {
-            <h1 class="h3 mb-1 mt-2">Not signed in</h1>
-            <p class="small text-secondary mb-0">Return to the dashboard and sign in again.</p>
-          }
-        </div>
+          </div>
+        } @else {
+          <div class="chat-header-main">
+            <a class="back-link" routerLink="/" aria-label="Back to dashboard">←</a>
+            <h1 class="chat-header-title mb-0">Not signed in</h1>
+          </div>
+        }
       </div>
 
       <div class="chat-layout">
-        <aside class="peer-sidebar">
-
-
-          <div class="peer-list">
-            @if (session.peers().length === 0) {
-              <div class="empty-chat empty-peers">
-                No peers are currently connected.
-              </div>
-            }
-
-            @for (connectedPeer of session.peers(); track connectedPeer.id) {
-              <article
-                class="peer-tile"
-                [class.peer-tile-active]="connectedPeer.id === peerId()"
-                [class.peer-tile-unread]="isPeerUnread(connectedPeer.id)"
-              >
-                <button
-                  class="peer-tile-main text-start"
-                  type="button"
-                  (click)="switchPeer(connectedPeer.id)"
-                >
-                  <div class="peer-tile-row">
-                    <span class="peer-tile-title">
-                      <span class="fw-semibold">{{ connectedPeer.displayName }}</span>
-                      @if (isPeerTyping(connectedPeer.id)) {
-                        <span class="peer-typing-dots" aria-label="Typing">
-                          <span></span>
-                          <span></span>
-                          <span></span>
-                        </span>
-                      }
-                    </span>
-                    <span
-                      class="status-led peer-tile-status"
-                      [class.status-led-ok]="connectedPeer.channelState === 'open' || connectedPeer.connectionState === 'connected'"
-                      [class.status-led-offline]="connectedPeer.channelState !== 'open' && connectedPeer.connectionState !== 'connected'"
-                      [attr.aria-label]="
-                        connectedPeer.channelState === 'open' || connectedPeer.connectionState === 'connected'
-                          ? 'Connected'
-                          : 'Disconnected'
-                      "
-                    ></span>
-                  </div>
-                </button>
-                <button
-                  class="peer-tile-delete"
-                  type="button"
-                  title="Delete conversation"
-                  aria-label="Delete conversation"
-                  (click)="deleteConversation(connectedPeer.id, $event)"
-                >
-                  🗑️
-                </button>
-              </article>
-            }
-          </div>
-        </aside>
-
-        <div class="chat-main">
-          <div class="conversation">
-            @if (conversation().length === 0) {
-              <div class="empty-chat">
-                No text messages yet. The chat page is ready as soon as the peer channel opens.
-              </div>
-            }
-
-            @for (entry of conversation(); track entry.id) {
-              <article
-                class="bubble"
-                [class.bubble-incoming]="entry.direction === 'incoming'"
-                [class.bubble-outgoing]="entry.direction === 'outgoing'"
-                [class.bubble-system]="entry.direction === 'system'"
-              >
-                @if (entry.direction !== 'system') {
-                  <div class="bubble-actions">
-                    <button
-                      class="bubble-action"
-                      type="button"
-                      (click)="toggleForwardMenu(entry, $event)"
-                      title="Forward message"
-                      aria-label="Forward message"
-                    >
-                      ⏩
-                    </button>
-                    <button
-                      class="bubble-action bubble-delete"
-                      type="button"
-                      (click)="deleteMessage(entry)"
-                      title="Delete message"
-                      aria-label="Delete message"
-                    >
-                      ×
-                    </button>
-                    @if (isForwardMenuOpen(entry.id)) {
-                      <div class="bubble-forward-menu">
-                        <select #forwardSelect class="bubble-forward-select" (change)="forwardEntry(entry, forwardSelect.value, forwardSelect)">
-                          <option value="">Forward to…</option>
-                          @for (targetPeer of forwardTargets(entry); track targetPeer.id) {
-                            <option [value]="targetPeer.id">{{ targetPeer.displayName }}</option>
-                          }
-                        </select>
-                      </div>
-                    }
-                  </div>
-                }
-                <div class="bubble-meta">
-                  <span class="bubble-author">{{ entry.authorLabel }}</span>
-                  <time class="bubble-time">{{ entry.createdAt | date: 'shortTime' }}</time>
-                </div>
-
-                @switch (entry.kind) {
-                  @case ('text') {
-                    <p class="mb-0">{{ entry.text }}</p>
-                  }
-                  @case ('json') {
-                    <pre class="bubble-json mb-0">{{ entry.payload | json }}</pre>
-                  }
-                  @case ('file') {
-                    <div class="d-grid gap-3">
-                      @if (isImageEntry(entry)) {
-                        <img
-                          class="bubble-image"
-                          [src]="entry.downloadUrl"
-                          [alt]="entry.fileName || 'Shared image'"
-                        />
-                      }
-
-                      @if (isVideoEntry(entry)) {
-                        <video
-                          class="bubble-video"
-                          [src]="entry.downloadUrl"
-                          controls
-                          autoplay
-                          muted
-                          playsinline
-                          preload="metadata"
-                        ></video>
-                      }
-
-                      @if (isIncomingJsonFileEntry(entry)) {
-                        <app-json-file-viewer [entry]="entry"></app-json-file-viewer>
-                      }
-
-                      <div>
-                        <div class="fw-semibold">{{ entry.fileName }}</div>
-                        @if (entry.fileSize) {
-                          <div class="small text-secondary-emphasis">{{ entry.fileSize | number }} bytes</div>
-                        }
-                      </div>
-
-                      @if (entry.downloadUrl) {
-                        <a class="bubble-download" [href]="entry.downloadUrl" [download]="entry.fileName">Download</a>
-                      }
-                    </div>
-                  }
-                  @case ('voice') {
-                    <div class="voice-bubble">
-                      <div class="voice-bubble-label">Voice message</div>
-                      @if (entry.downloadUrl) {
-                        <audio
-                          class="voice-player"
-                          [src]="entry.downloadUrl"
-                          controls
-                          preload="metadata"
-                        ></audio>
-                      }
-                    </div>
-                  }
-                  @default {
-                    @if (entry.showSpinner) {
-                      <div class="bubble-system-status">
-                        <span class="bubble-spinner" aria-hidden="true"></span>
-                        <p class="mb-0">{{ entry.text }}</p>
-                      </div>
-                    } @else {
-                      <p class="mb-0">{{ entry.text }}</p>
-                    }
-                  }
-                }
-              </article>
-            }
+        <div class="chat-main" (click)="closePeerDropdown()">
+          <div #conversationContainer class="conversation">
+            <ng-container [ngTemplateOutlet]="conversationBubbles"></ng-container>
           </div>
 
           <div class="composer">
             <textarea
               #composerTextarea
               class="form-control composer-textarea"
-              rows="3"
+              rows="2"
               [(ngModel)]="messageText"
               (ngModelChange)="handleMessageTextChange($event)"
               (keydown.enter)="handleComposerEnter($event)"
               (click)="trackComposerSelection(composerTextarea)"
               (keyup)="trackComposerSelection(composerTextarea)"
               (select)="trackComposerSelection(composerTextarea)"
-              [disabled]="!session.isSelectedPeerReady()"
-              placeholder="Write a text message to your peer"
+              [disabled]="!peerId()"
+              placeholder="Write a text message to your peer, even if they are offline"
             ></textarea>
 
-            <div class="composer-toolbar">
-              @if (peer(); as selectedPeer) {
-                <button
-                  class="composer-call"
-                  type="button"
-                  [disabled]="!canStartSelectedVoiceCall()"
-                  (click)="startVoiceCall(selectedPeer.id)"
-                  title="Start voice call"
-                  aria-label="Start voice call"
-                >
-                  📞
-                </button>
+	            <div class="composer-toolbar">
+	              <div class="composer-actions">
+	                @if (peerId(); as selectedPeerId) {
+	                  @if (peer(); as livePeer) {
+	                    <button
+	                      class="composer-call"
+	                      type="button"
+	                      [disabled]="!canStartSelectedVoiceCall()"
+	                      (click)="openCallChoice(livePeer.id)"
+	                      title="Start call"
+	                      aria-label="Start call"
+	                    >
+	                      📞
+	                    </button>
 
-                @if (canEndSelectedVoiceCall()) {
-                  <button
-                    class="composer-hangup"
-                    type="button"
-                    (click)="endVoiceCall(selectedPeer.id)"
-                    title="End voice call"
-                    aria-label="End voice call"
-                  >
-                    🛑
-                  </button>
-                }
+	                    @if (canEndSelectedVoiceCall()) {
+	                      <button
+	                        class="composer-hangup"
+	                        type="button"
+	                        (click)="endVoiceCall(livePeer.id)"
+	                        title="End call"
+	                        aria-label="End call"
+	                      >
+	                        🛑
+	                      </button>
+	                    }
 
-                <button
-                  class="composer-camera"
-                  type="button"
-                  [disabled]="selectedPeer.channelState !== 'open' && !isStreamingCameraToSelectedPeer()"
-                  (click)="toggleCameraStream(selectedPeer.id)"
-                  [title]="isStreamingCameraToSelectedPeer() ? 'Stop webcam' : 'Start webcam'"
-                  [attr.aria-label]="isStreamingCameraToSelectedPeer() ? 'Stop webcam' : 'Start webcam'"
-                >
-                  {{ isStreamingCameraToSelectedPeer() ? '🛑' : '📹' }}
-                </button>
+	                    <button
+	                      class="composer-voice"
+	                      type="button"
+	                      [disabled]="livePeer.channelState !== 'open' && !isRecordingVoice()"
+	                      (click)="toggleVoiceRecording()"
+	                      [title]="isRecordingVoice() ? 'Stop and send voice message' : 'Record voice message'"
+	                      [attr.aria-label]="isRecordingVoice() ? 'Stop and send voice message' : 'Record voice message'"
+	                      [class.composer-voice-recording]="isRecordingVoice()"
+	                    >
+	                      {{ isRecordingVoice() ? '⏹️' : '🎙️' }}
+	                    </button>
 
-                <button
-                  class="composer-voice"
-                  type="button"
-                  [disabled]="selectedPeer.channelState !== 'open' && !isRecordingVoice()"
-                  (click)="toggleVoiceRecording()"
-                  [title]="isRecordingVoice() ? 'Stop and send voice message' : 'Record voice message'"
-                  [attr.aria-label]="isRecordingVoice() ? 'Stop and send voice message' : 'Record voice message'"
-                  [class.composer-voice-recording]="isRecordingVoice()"
-                >
-                  {{ isRecordingVoice() ? '⏹️' : '🎙️' }}
-                </button>
+	                    <button
+	                      class="composer-dictation"
+	                      type="button"
+	                      [disabled]="!selectedPeerId || isTranscribingDictation()"
+	                      (click)="toggleDictation(composerTextarea)"
+	                      [title]="
+	                        isDictating()
+	                          ? 'Stop dictation and transcribe'
+	                          : isTranscribingDictation()
+	                            ? 'Transcribing dictated audio'
+	                            : 'Start dictation'
+	                      "
+	                      [attr.aria-label]="
+	                        isDictating()
+	                          ? 'Stop dictation and transcribe'
+	                          : isTranscribingDictation()
+	                            ? 'Transcribing dictated audio'
+	                            : 'Start dictation'
+	                      "
+	                      [class.composer-dictation-active]="isDictating() || isTranscribingDictation()"
+	                    >
+	                      {{ isDictating() ? '🛑' : isTranscribingDictation() ? '⏳' : '🗣️' }}
+	                    </button>
+	                  }
 
-                <button
-                  class="composer-dictation"
-                  type="button"
-                  [disabled]="!session.isSelectedPeerReady() || session.signalingState() !== 'connected' || isTranscribingDictation()"
-                  (click)="toggleDictation(composerTextarea)"
-                  [title]="
-                    isDictating()
-                      ? 'Stop dictation and transcribe'
-                      : isTranscribingDictation()
-                        ? 'Transcribing dictated audio'
-                        : 'Start dictation'
-                  "
-                  [attr.aria-label]="
-                    isDictating()
-                      ? 'Stop dictation and transcribe'
-                      : isTranscribingDictation()
-                        ? 'Transcribing dictated audio'
-                        : 'Start dictation'
-                  "
-                  [class.composer-dictation-active]="isDictating() || isTranscribingDictation()"
-                >
-                  {{ isDictating() ? '🛑' : isTranscribingDictation() ? '⏳' : '🗣️' }}
-                </button>
+	                  <input
+	                    #fileInput
+	                    class="composer-file-input"
+	                    type="file"
+	                    [disabled]="!selectedPeerId"
+	                    (change)="sendFile(selectedPeerId, fileInput)"
+	                  />
+	                  <button
+	                    class="composer-plus"
+	                    type="button"
+	                    [disabled]="!selectedPeerId"
+	                    (click)="fileInput.click()"
+	                    title="Send file"
+	                    aria-label="Send file"
+	                  >
+	                    +
+	                  </button>
+	                }
 
-                <input
-                  #fileInput
-                  class="composer-file-input"
-                  type="file"
-                  [disabled]="selectedPeer.channelState !== 'open'"
-                  (change)="sendFile(selectedPeer.id, fileInput)"
-                />
-                <button
-                  class="composer-plus"
-                  type="button"
-                  [disabled]="selectedPeer.channelState !== 'open'"
-                  (click)="fileInput.click()"
-                  title="Send file"
-                  aria-label="Send file"
-                >
-                  +
-                </button>
-              }
+	                <button
+	                  class="composer-image-generate"
+	                  type="button"
+	                  [disabled]="!peer() || session.signalingState() !== 'connected' || !messageText.trim()"
+	                  (click)="requestGeneratedImage()"
+	                  title="Generate image from prompt"
+	                  aria-label="Generate image from prompt"
+	                >
+	                  🖼️
+	                </button>
 
-              <button
-                class="composer-image-generate"
-                type="button"
-                [disabled]="!peer() || session.signalingState() !== 'connected' || !messageText.trim()"
-                (click)="requestGeneratedImage()"
-                title="Generate image from prompt"
-                aria-label="Generate image from prompt"
-              >
-                🖼️
-              </button>
+	                <div class="composer-emoji-picker-shell">
+	                  @if (emojiPickerOpen()) {
+	                    <div class="composer-emoji-picker">
+	                      @for (emoji of emojiOptions; track emoji) {
+	                        <button
+	                          class="composer-emoji-option"
+	                          type="button"
+	                          (click)="insertEmoji(emoji, composerTextarea)"
+	                          [attr.aria-label]="'Insert ' + emoji"
+	                          [title]="'Insert ' + emoji"
+	                        >
+	                          {{ emoji }}
+	                        </button>
+	                      }
+	                    </div>
+	                  }
+	                  <button
+	                    class="composer-emoji-trigger"
+	                    type="button"
+	                    [disabled]="!peerId()"
+	                    (click)="toggleEmojiPicker($event)"
+	                    title="Insert emoji"
+	                    aria-label="Insert emoji"
+	                  >
+	                    😀
+	                  </button>
+	                </div>
 
-              <div class="composer-emoji-picker-shell">
-                @if (emojiPickerOpen()) {
-                  <div class="composer-emoji-picker">
-                    @for (emoji of emojiOptions; track emoji) {
-                      <button
-                        class="composer-emoji-option"
-                        type="button"
-                        (click)="insertEmoji(emoji, composerTextarea)"
-                        [attr.aria-label]="'Insert ' + emoji"
-                        [title]="'Insert ' + emoji"
-                      >
-                        {{ emoji }}
-                      </button>
-                    }
-                  </div>
-                }
-                <button
-                  class="composer-emoji-trigger"
-                  type="button"
-                  [disabled]="!session.isSelectedPeerReady()"
-                  (click)="toggleEmojiPicker($event)"
-                  title="Insert emoji"
-                  aria-label="Insert emoji"
-                >
-                  😀
-                </button>
-              </div>
+	                <button
+	                  class="send-emoji"
+	                  type="button"
+	                  [disabled]="!peerId()"
+	                  (click)="sendMessage()"
+	                  title="Send message"
+	                  aria-label="Send message"
+	                >
+	                  ✅
+	                </button>
+	              </div>
 
-              <button
-                class="send-emoji"
-                type="button"
-                [disabled]="!session.isSelectedPeerReady()"
-                (click)="sendMessage()"
-                title="Send message"
-                aria-label="Send message"
-              >
-                ✅
-              </button>
-            </div>
+	              @if (lastIncomingReceiveMetric(); as receiveMetric) {
+	                <div class="composer-receive-speed" title="Receive speed of the last completed incoming WebRTC message">
+	                  <span class="composer-receive-speed-label">Rx</span>
+	                  <span class="composer-receive-speed-value">{{ receiveMetric.mbps | number: '1.2-2' }} Mbit/s</span>
+	                </div>
+	              }
+	            </div>
           </div>
         </div>
       </div>
     </section>
   </div>
 </main>
+
+<ng-template #conversationBubbles>
+  @if (conversation().length === 0) {
+    <div class="empty-chat">
+      No text messages yet. Messages and files can be queued here and will send when the peer reconnects.
+    </div>
+  }
+
+  @for (entry of conversation(); track entry.id) {
+    <article
+      class="bubble"
+      [class.bubble-incoming]="entry.direction === 'incoming'"
+      [class.bubble-outgoing]="entry.direction === 'outgoing'"
+      [class.bubble-pending]="isPendingOutgoingEntry(entry)"
+      [class.bubble-system]="entry.direction === 'system'"
+      [class.bubble-emoji-only]="isEmojiOnlyEntry(entry)"
+    >
+      @if (entry.direction !== 'system' && !isEmojiOnlyEntry(entry)) {
+        <div class="bubble-actions">
+          @if (isGeneratedImageEntry(entry)) {
+            <button
+              class="bubble-action"
+              type="button"
+              (click)="sendGeneratedImage(entry)"
+              title="Send image to peer"
+              aria-label="Send image to peer"
+            >
+              📤
+            </button>
+          }
+          <button
+            class="bubble-action"
+            type="button"
+            (click)="toggleForwardMenu(entry, $event)"
+            title="Forward message"
+            aria-label="Forward message"
+          >
+            ⏩
+          </button>
+          <button
+            class="bubble-action bubble-delete"
+            type="button"
+            (click)="deleteMessage(entry)"
+            title="Delete message"
+            aria-label="Delete message"
+          >
+            ×
+          </button>
+          @if (isForwardMenuOpen(entry.id)) {
+            <div class="bubble-forward-menu">
+              <select #forwardSelect class="bubble-forward-select" (change)="forwardEntry(entry, forwardSelect.value, forwardSelect)">
+                <option value="">Forward to…</option>
+                @for (targetPeer of forwardTargets(entry); track targetPeer.id) {
+                  <option [value]="targetPeer.id">{{ targetPeer.displayName }}</option>
+                }
+              </select>
+            </div>
+          }
+        </div>
+      }
+      @if (!isEmojiOnlyEntry(entry)) {
+        <div class="bubble-meta">
+          <span class="bubble-author">{{ entry.authorLabel }}</span>
+          <time class="bubble-time">{{ entry.createdAt | date: 'shortTime' }}</time>
+          @if (isPendingOutgoingEntry(entry)) {
+            <span class="bubble-delivery-state">Queued</span>
+          }
+        </div>
+      }
+
+      @switch (entry.kind) {
+        @case ('text') {
+          <p class="mb-0" [class.emoji-only-text]="isEmojiOnlyEntry(entry)">{{ entry.text }}</p>
+        }
+        @case ('json') {
+          <pre class="bubble-json mb-0">{{ entry.payload | json }}</pre>
+        }
+        @case ('file') {
+          <div class="d-grid gap-3">
+            @if (isImageEntry(entry)) {
+              <img
+                class="bubble-image"
+                [src]="imageDisplayUrl(entry)"
+                [alt]="entry.fileName || 'Shared image'"
+              />
+            }
+
+            @if (isVideoEntry(entry)) {
+              <video
+                class="bubble-video"
+                [src]="entry.downloadUrl"
+                controls
+                autoplay
+                muted
+                playsinline
+                preload="metadata"
+              ></video>
+            }
+
+            @if (isIncomingJsonFileEntry(entry)) {
+              <app-json-file-viewer [entry]="entry"></app-json-file-viewer>
+            }
+
+            <div>
+              <div class="fw-semibold">{{ entry.fileName }}</div>
+              @if (entry.fileSize) {
+                <div class="small text-secondary-emphasis">{{ entry.fileSize | number }} bytes</div>
+              }
+            </div>
+
+            @if (entry.downloadUrl) {
+              <a class="bubble-download" [href]="entry.downloadUrl" [download]="entry.fileName">Download</a>
+            }
+
+            @if (hasDocumentPreviewImage(entry)) {
+              <div class="bubble-preview">
+                <div class="bubble-preview-label">Preview</div>
+                <img
+                  class="bubble-preview-image"
+                  [src]="documentPreviewImageUrl(entry)"
+                  [alt]="entry.fileName || 'Document preview'"
+                />
+              </div>
+            }
+          </div>
+        }
+        @case ('voice') {
+          <div class="voice-bubble">
+            <div class="voice-bubble-label">Voice message</div>
+            @if (entry.downloadUrl) {
+              <audio
+                class="voice-player"
+                [src]="entry.downloadUrl"
+                controls
+                preload="metadata"
+              ></audio>
+            }
+          </div>
+        }
+        @default {
+          @if (entry.showSpinner) {
+            <div class="bubble-system-status">
+              <span class="bubble-spinner" aria-hidden="true"></span>
+              <p class="mb-0">{{ entry.text }}</p>
+            </div>
+          } @else {
+            <p class="mb-0">{{ entry.text }}</p>
+          }
+        }
+      }
+    </article>
+  }
+</ng-template>

client/src/app/chat-page.component.scss

@@ -8,259 +8,182 @@
   min-height: 100dvh;
 }
 
+/* ── Panel ──────────────────────────────────────────────────────────────── */
 .panel {
   border: 1px solid var(--surface-border);
-  border-radius: 1.75rem;
+  border-radius: 2rem;
   background: var(--panel-background);
-  backdrop-filter: blur(18px);
-  box-shadow: 0 20px 60px var(--shadow-color);
+  backdrop-filter: blur(22px);
+  -webkit-backdrop-filter: blur(22px);
+  box-shadow:
+    0 28px 72px var(--shadow-color),
+    inset 0 1px 0 rgba(255, 255, 255, 0.07);
 }
 
+/* ── Chat page shell ────────────────────────────────────────────────────── */
 .chat-page {
-  width: min(100%, 800px);
+  display: flex;
+  flex-direction: column;
+  width: min(96vw, 98%);
+  height: min(calc(100dvh - 2rem), 1024px);
+  max-height: 1024px;
   margin-inline: auto;
   overflow-x: hidden;
 }
 
-.call-modal-backdrop {
-  position: fixed;
-  inset: 0;
-  z-index: 1250;
-  display: grid;
-  place-items: center;
-  padding: 1.5rem;
-  background: rgba(3, 8, 14, 0.52);
-  backdrop-filter: blur(8px);
+/* ── Header ─────────────────────────────────────────────────────────────── */
+.chat-header { flex: 0 0 auto; }
+
+.chat-header-main {
+  display: flex;
+  flex-wrap: wrap;
+  align-items: center;
+  gap: 0.85rem;
 }
 
+.chat-header-title {
+  margin: 0;
+  font-size: clamp(1.1rem, 2vw, 1.45rem);
+  font-weight: 700;
+  line-height: 1.1;
+  background: linear-gradient(135deg, var(--page-text) 40%, var(--accent-color) 100%);
+  background-clip: text;
+  -webkit-background-clip: text;
+  -webkit-text-fill-color: transparent;
+}
+
+/* ── Back link ───────────────────────────────────────────────────────────── */
 .back-link {
-  color: var(--link-color);
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 2.25rem;
+  height: 2.25rem;
+  border-radius: 999px;
+  color: var(--page-text-muted);
+  background: var(--badge-background);
+  border: 1px solid var(--surface-border-soft);
   text-decoration: none;
+  font-size: 1.15rem;
+  line-height: 1;
+  transition: color 160ms ease, background 160ms ease, border-color 160ms ease, transform 160ms ease;
 }
 
+.back-link:hover,
+.back-link:focus-visible {
+  color: var(--accent-color);
+  background: var(--accent-color-soft);
+  border-color: color-mix(in srgb, var(--accent-color) 35%, transparent);
+  transform: translateX(-2px);
+}
+
+/* ── Status indicators ───────────────────────────────────────────────────── */
 .status-indicators {
   display: flex;
   flex-wrap: wrap;
-  gap: 0.9rem;
+  gap: 0.5rem;
+  margin-left: auto;
+  align-items: center;
 }
 
 .status-indicator {
   display: inline-flex;
   align-items: center;
-  gap: 0.45rem;
-  font-size: 0.9rem;
-  color: var(--page-text-soft);
-}
-
-.status-indicator-action {
-  padding: 0;
-  border: 0;
-  background: transparent;
-}
-
-.status-indicator-action:not(:disabled) {
-  color: var(--page-text);
-  cursor: pointer;
-}
-
-.status-indicator-action:not(:disabled):hover,
-.status-indicator-action:not(:disabled):focus-visible {
-  color: var(--accent-color);
-}
-
-.status-indicator-action:disabled {
-  cursor: default;
-  opacity: 1;
-}
-
-.status-led {
-  width: 0.8rem;
-  height: 0.8rem;
+  gap: 0.42rem;
+  padding: 0.32rem 0.75rem;
   border-radius: 999px;
-  box-shadow: 0 0 0 1px var(--input-border);
+  font-size: 0.72rem;
+  font-family: var(--font-mono);
+  font-weight: 500;
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  color: var(--page-text-soft);
+  background: rgba(255, 255, 255, 0.04);
+  border: 1px solid var(--surface-border-soft);
 }
 
-.status-led-ok {
-  background: #59d66f;
-}
-
-.status-led-connecting {
-  background: #f3ad3d;
-}
-
-.status-led-offline {
-  background: #eb5d64;
+.expand-action-icon {
+  font-size: 1.25rem;
+  line-height: 1;
+  opacity: 0.7;
 }
 
+/* ── Layout ──────────────────────────────────────────────────────────────── */
 .chat-layout {
   display: grid;
-  grid-template-columns: minmax(10rem, 13rem) minmax(0, 1fr);
-  gap:1.25rem;
-}
-
-.peer-sidebar {
-  padding:1rem;
-  border-radius: 1.3rem;
-  border: 1px solid var(--surface-border-soft);
-  background: var(--panel-soft-background);
-}
-
-.peer-count {
-  display: inline-flex;
-  min-width: 2rem;
-  justify-content: center;
-  padding: 0.35rem 0.65rem;
-  border-radius: 999px;
-  font-size: 0.85rem;
-  background: var(--badge-background);
-}
-
-.peer-list {
-  display: grid;
-  gap: 0.75rem;
-  max-height: calc(100dvh - 17rem);
-  overflow: auto;
-}
-
-.peer-tile {
-  display: grid;
-  grid-template-columns: minmax(0, 1fr) auto;
-  gap: 0.75rem;
-  align-items: center;
-  width: 100%;
-  padding: 0.8rem 0.85rem 0.8rem 1rem;
-  border: 1px solid var(--surface-border);
-  border-radius: 1rem;
-  color: inherit;
-  background: var(--surface-background);
-  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
-}
-
-.peer-tile-main {
-  min-width: 0;
-  padding: 0;
-  border: 0;
-  color: inherit;
-  background: transparent;
-}
-
-.peer-tile-delete {
-  width: 2.2rem;
-  height: 2.2rem;
-  padding: 0;
-  border: 0;
-  border-radius: 999px;
-  background: transparent;
-  font-size: 1rem;
-  line-height: 1;
-}
-
-.peer-tile-delete:hover,
-.peer-tile-delete:focus-visible {
-  background: var(--badge-background);
-}
-
-.peer-tile:hover,
-.peer-tile:focus-visible,
-.peer-tile-active {
-  transform: translateY(-1px);
-  border-color: color-mix(in srgb, var(--accent-color) 35%, transparent);
-  background: var(--surface-hover-background);
-}
-
-.peer-tile-unread {
-  border-color: #c62828;
-  box-shadow: inset 0 0 0 2px #c62828;
-}
-
-.peer-tile-row {
-  display: flex;
-  align-items: center;
-  justify-content: space-between;
-  gap: 0.75rem;
-}
-
-.peer-tile-title {
-  display: inline-flex;
-  align-items: center;
-  gap: 0.45rem;
-  min-width: 0;
-}
-
-.peer-typing-dots {
-  display: inline-flex;
-  align-items: center;
-  gap: 0.2rem;
-  min-height: 0.9rem;
-}
-
-.peer-typing-dots span {
-  width: 0.38rem;
-  height: 0.38rem;
-  border-radius: 999px;
-  background: var(--page-text);
-  opacity: 0.28;
-  animation: peer-typing-pulse 900ms infinite ease-in-out;
-}
-
-.peer-typing-dots span:nth-child(2) {
-  animation-delay: 120ms;
-}
-
-.peer-typing-dots span:nth-child(3) {
-  animation-delay: 240ms;
-}
-
-.peer-tile-status {
-  flex: 0 0 auto;
+  flex: 1 1 auto;
+  grid-template-columns: minmax(0, 1fr);
+  gap: 0;
+  min-height: 0;
 }
 
 .chat-main {
+  display: grid;
+  grid-template-rows: minmax(0, 1fr) auto;
   min-width: 0;
+  min-height: 0;
 }
 
+/* ── Conversation scroll area ────────────────────────────────────────────── */
 .conversation {
   display: grid;
-  gap: 0.85rem;
+  gap: 0.75rem;
   align-content: start;
-  min-height: 24rem;
-  max-height: calc(100dvh - 20rem);
+  min-height: 0;
   overflow: auto;
-  padding: 0.5rem 0;
+  padding: 0.75rem 0.25rem;
 }
 
+/* ── Bubble ──────────────────────────────────────────────────────────────── */
 .bubble {
   position: relative;
   align-self: start;
-  max-width: min(75%, 34rem);
-  padding: 0.9rem 3.4rem 0.9rem 1rem;
-  border-radius: 1.2rem;
-  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.14);
+  max-width: min(78%, 36rem);
+  padding: 0.85rem 3.25rem 0.85rem 1rem;
+  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.22);
 }
 
 .bubble-actions {
   position: absolute;
   top: 0.45rem;
-  right: 0.55rem;
+  right: 0.5rem;
   display: flex;
   align-items: flex-start;
-  gap: 0.35rem;
+  gap: 0.28rem;
+  opacity: 0;
+  transition: opacity 160ms ease;
+}
+
+.bubble:hover .bubble-actions {
+  opacity: 1;
 }
 
 .bubble-action {
-  width: 1.5rem;
-  height: 1.5rem;
+  width: 1.45rem;
+  height: 1.45rem;
   padding: 0;
   border: 0;
   border-radius: 999px;
-  color: #fff;
-  background: var(--badge-background);
+  color: var(--page-text-muted);
+  background: rgba(255, 255, 255, 0.1);
   line-height: 1;
-  font-size: 0.9rem;
+  font-size: 0.8rem;
+  transition: background 120ms ease, color 120ms ease;
+}
+
+.bubble-action:hover {
+  background: rgba(255, 255, 255, 0.18);
+  color: var(--page-text);
 }
 
 .bubble-delete {
-  background: var(--danger-background);
+  background: rgba(239, 68, 68, 0.2);
+  color: #fca5a5;
+}
+
+.bubble-delete:hover {
+  background: rgba(239, 68, 68, 0.35);
+  color: #fff;
 }
 
 .bubble-forward-menu {
@@ -271,9 +194,10 @@
   min-width: 12rem;
   padding: 0.45rem;
   border: 1px solid var(--surface-border);
-  border-radius: 0.85rem;
-  background: var(--surface-background);
-  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
+  border-radius: 0.9rem;
+  background: var(--panel-background);
+  backdrop-filter: blur(16px);
+  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.45);
 }
 
 .bubble-forward-select {
@@ -282,194 +206,15 @@
   border-radius: 0.65rem;
   color: var(--page-text);
   background: var(--input-background);
+  padding: 0.35rem 0.65rem;
 }
 
-.bubble-incoming {
-  justify-self: start;
-  color: var(--incoming-bubble-text);
-  background: var(--incoming-bubble-background);
-}
-
-.bubble-outgoing {
-  justify-self: end;
-  color: var(--outgoing-bubble-text);
-  background: var(--outgoing-bubble-background);
-}
-
-.bubble-system {
-  justify-self: center;
-  max-width: 90%;
-  color: var(--page-text-soft);
-  background: var(--badge-background);
-}
-
-.bubble-meta {
-  display: grid;
-  gap: 0.12rem;
-  margin-bottom: 0.35rem;
-  font-size: 0.78rem;
-  opacity: 0.7;
-}
-
-.bubble-time {
-  display: block;
-}
-
-.bubble-system-status {
-  display: inline-flex;
-  align-items: center;
-  gap: 0.7rem;
-}
-
-.bubble-spinner {
-  width: 1rem;
-  height: 1rem;
-  flex: 0 0 auto;
-  border: 0.15rem solid currentColor;
-  border-right-color: transparent;
-  border-radius: 999px;
-  opacity: 0.8;
-  animation: bubble-spin 700ms linear infinite;
-}
-
-.composer {
-  display: grid;
-  gap: 0.85rem;
-  padding-top: 1rem;
-  margin-top: 1rem;
-  border-top: 1px solid var(--surface-border-soft);
-}
-
-.composer-toolbar {
-  display: flex;
-  flex-wrap: wrap;
-  gap: 0.6rem;
-  align-items: center;
-}
-
-.composer-emoji-picker-shell {
-  position: relative;
-}
-
-.composer-file-input {
-  display: none;
-}
-
-.composer-camera,
-.composer-call,
-.composer-dictation,
-.composer-hangup,
-.composer-voice,
-.composer-image-generate,
-.composer-emoji-trigger,
-.composer-plus,
-.send-emoji {
-  width: 3.25rem;
-  height: 3.25rem;
-  border: 0;
-  border-radius: 999px;
-  font-size: 1.35rem;
-}
-
-.composer-textarea,
-.composer-textarea:focus {
-  color: var(--page-text);
-  background-color: var(--input-background);
-  border-color: var(--input-border);
-  box-shadow: none;
-}
-
-.composer-textarea::placeholder {
-  color: var(--placeholder-color);
-}
-
-.composer-textarea {
-  min-height: 7rem;
-}
-
-.composer-call {
-  color: var(--page-text);
-  background: linear-gradient(135deg, #bfe9ff, #96c3ff);
-}
-
-.composer-camera,
-.composer-emoji-trigger,
-.composer-plus {
-  color: var(--page-text);
-  background: var(--badge-background);
-}
-
-.composer-dictation {
-  color: var(--page-text);
-  background: linear-gradient(135deg, #f6d8ff, #ffcadb);
-}
-
-.composer-dictation-active,
-.composer-hangup,
-.composer-voice-recording {
-  color: #fff;
-  background: linear-gradient(135deg, #ff7d63, #dc3e5d);
-}
-
-.composer-voice {
-  color: var(--page-text);
-  background: linear-gradient(135deg, #ffd8bf, #ff9b8a);
-}
-
-.composer-voice-recording {
-  box-shadow: 0 0 0 0.2rem rgba(220, 62, 93, 0.18);
-}
-
-.composer-image-generate {
-  color: var(--page-text);
-  background: linear-gradient(135deg, #ffe6b0, #ffc8a8);
-}
-
-.send-emoji {
-  background: linear-gradient(135deg, #def7dd, #9bd5ff);
-}
-
-.composer-emoji-picker {
-  position: absolute;
-  right: 0;
-  bottom: calc(100% + 0.65rem);
-  z-index: 3;
-  display: grid;
-  grid-template-columns: repeat(5, minmax(0, 1fr));
-  gap: 0.35rem;
-  width: min(14rem, 70vw);
-  max-height: 10.35rem;
-  overflow-y: auto;
-  overflow-x: hidden;
-  padding: 0.65rem;
-  border: 1px solid var(--surface-border);
-  border-radius: 1rem;
-  background: var(--panel-background);
-  box-shadow: 0 18px 36px rgba(0, 0, 0, 0.18);
-}
-
-.composer-emoji-option {
-  width: 2.1rem;
-  height: 2.1rem;
-  padding: 0;
-  border: 0;
-  border-radius: 0.75rem;
-  background: var(--surface-background);
-  font-size: 1.2rem;
-  line-height: 1;
-}
-
-.composer-emoji-option:hover,
-.composer-emoji-option:focus-visible {
-  background: var(--surface-hover-background);
-}
-
-.bubble-author,
-.bubble-download,
-.voice-bubble-label {
-  font-weight: 600;
+.emoji-only-text {
+  font-size: clamp(2.1rem, 5vw, 3.4rem);
+  line-height: 1.15;
 }
 
+/* ── Bubble: image / video / download ───────────────────────────────────── */
 .bubble-image,
 .bubble-video {
   width: 200px;
@@ -477,19 +222,55 @@
   height: auto;
   display: block;
   border-radius: 1rem;
+  border: 1px solid var(--surface-border-soft);
 }
 
-.bubble-video {
-  background: #000;
-}
-.bubble-download { color: inherit; }
+.bubble-video { background: #000; }
 
-.voice-bubble {
-  display: grid;
-  gap: 0.65rem;
+.bubble-download {
+  color: var(--accent-color);
+  font-size: 0.85rem;
+  font-weight: 600;
+  text-decoration: none;
+  display: inline-flex;
+  align-items: center;
+  gap: 0.35rem;
 }
 
-.voice-bubble-label { font-size: 0.88rem; }
+.bubble-download:hover { color: var(--link-color); }
+
+.bubble-preview { display: grid; gap: 0.45rem; }
+
+.bubble-preview-label {
+  font-size: 0.72rem;
+  font-weight: 700;
+  font-family: var(--font-mono);
+  text-transform: uppercase;
+  letter-spacing: 0.08em;
+  opacity: 0.65;
+}
+
+.bubble-preview-image {
+  display: block;
+  width: min(240px, 100%);
+  max-width: 100%;
+  height: auto;
+  border: 1px solid var(--surface-border);
+  border-radius: 1rem;
+}
+
+/* ── Voice bubble ────────────────────────────────────────────────────────── */
+.voice-bubble { display: grid; gap: 0.6rem; }
+
+.voice-bubble-label {
+  font-size: 0.78rem;
+  font-weight: 700;
+  font-family: var(--font-mono);
+  letter-spacing: 0.08em;
+  text-transform: uppercase;
+  opacity: 0.7;
+  color: var(--accent-color);
+}
 
 .voice-player {
   display: block;
@@ -500,59 +281,292 @@
   white-space: pre-wrap;
   word-break: break-word;
   margin: 0;
+  font-family: var(--font-mono);
+  font-size: 0.82rem;
+  opacity: 0.9;
 }
 
+/* ── Bubble metadata ─────────────────────────────────────────────────────── */
+.bubble-author { font-weight: 600; }
+
+/* ── Empty state ─────────────────────────────────────────────────────────── */
 .empty-chat {
-  padding: 1.25rem;
-  border: 1px dashed var(--input-border);
-  border-radius: 1rem;
+  padding: 1.5rem;
+  border: 1px dashed var(--surface-border);
+  border-radius: 1.25rem;
   color: var(--page-text-muted);
   text-align: center;
+  font-size: 0.9rem;
+  font-family: var(--font-mono);
+  background: rgba(255, 255, 255, 0.02);
 }
 
-.empty-peers {
-  min-height: 10rem;
+.empty-peers { min-height: 10rem; }
+
+/* ── Composer ────────────────────────────────────────────────────────────── */
+.composer {
+  display: grid;
+  gap: 0.75rem;
+  flex: 0 0 auto;
+  padding: 1rem 0 0;
+  margin-top: 0.75rem;
+  border-top: 1px solid var(--surface-border-soft);
 }
 
-.h3,
-.small {
+.composer-textarea,
+.composer-textarea:focus {
   color: var(--page-text);
+  background-color: var(--input-background);
+  border-color: var(--input-border);
+  border-radius: 1rem;
+  box-shadow: none;
+  transition: border-color 160ms ease, box-shadow 160ms ease;
 }
 
-@keyframes peer-typing-pulse {
-  0%,
-  80%,
-  100% {
-    opacity: 0.28;
-    transform: translateY(0);
-  }
-
-  40% {
-    opacity: 1;
-    transform: translateY(-1px);
-  }
+.composer-textarea:focus {
+  border-color: color-mix(in srgb, var(--accent-color) 50%, transparent);
+  box-shadow: 0 0 0 3px var(--accent-color-soft);
 }
 
-@keyframes bubble-spin {
-  to {
-    transform: rotate(360deg);
-  }
+.composer-textarea::placeholder { color: var(--placeholder-color); }
+
+.composer-textarea {
+  min-height: calc(2 * 1.5rem + 1.25rem);
+  max-height: calc(6 * 1.5rem + 1.25rem);
+  overflow-y: auto;
+  resize: none;
 }
 
+/* ── Composer toolbar ────────────────────────────────────────────────────── */
+.composer-toolbar {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 0.55rem;
+  align-items: center;
+  justify-content: space-between;
+}
+
+.composer-actions {
+  display: flex;
+  flex: 1 1 auto;
+  flex-wrap: wrap;
+  gap: 0.45rem;
+  align-items: center;
+}
+
+/* All composer icon buttons share base sizing */
+.composer-camera,
+.composer-call,
+.composer-dictation,
+.composer-hangup,
+.composer-voice,
+.composer-image-generate,
+.composer-emoji-trigger,
+.composer-plus,
+.send-emoji {
+  width: 2.85rem;
+  height: 2.85rem;
+  border: 0;
+  border-radius: 999px;
+  font-size: 1.2rem;
+  transition: transform 160ms ease, opacity 160ms ease, box-shadow 160ms ease;
+}
+
+.composer-camera:hover,
+.composer-call:hover,
+.composer-dictation:hover,
+.composer-voice:hover,
+.composer-image-generate:hover,
+.composer-emoji-trigger:hover,
+.composer-plus:hover,
+.send-emoji:hover {
+  transform: translateY(-1px);
+}
+
+:is(
+  .composer-camera,
+  .composer-call,
+  .composer-dictation,
+  .composer-hangup,
+  .composer-voice,
+  .composer-image-generate,
+  .composer-emoji-trigger,
+  .composer-plus,
+  .send-emoji
+):disabled {
+  opacity: 0.38;
+  transform: none;
+}
+
+.composer-file-input { display: none; }
+
+/* Individual button colors */
+.composer-call {
+  color: #fff;
+  background: linear-gradient(135deg, #059669, #10b981);
+  box-shadow: 0 4px 16px rgba(16, 185, 129, 0.3);
+}
+
+.composer-hangup {
+  color: #fff;
+  background: linear-gradient(135deg, #dc2626, #ef4444);
+  box-shadow: 0 4px 16px rgba(220, 38, 38, 0.3);
+}
+
+.composer-voice {
+  color: #fff;
+  background: linear-gradient(135deg, #d97706, #f59e0b);
+  box-shadow: 0 4px 16px rgba(245, 158, 11, 0.25);
+}
+
+.composer-voice-recording {
+  color: #fff;
+  background: linear-gradient(135deg, #db2777, #ec4899) !important;
+  box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.2), 0 4px 16px rgba(219, 39, 119, 0.35) !important;
+  animation: voice-pulse 1.2s ease-in-out infinite;
+}
+
+@keyframes voice-pulse {
+  0%, 100% { box-shadow: 0 0 0 3px rgba(236, 72, 153, 0.2); }
+  50% { box-shadow: 0 0 0 6px rgba(236, 72, 153, 0.08); }
+}
+
+.composer-dictation {
+  color: #1a1a1a;
+  background: linear-gradient(135deg, #fbbf24, #fde68a);
+  box-shadow: 0 4px 16px rgba(251, 191, 36, 0.25);
+}
+
+.composer-dictation-active {
+  color: #fff !important;
+  background: linear-gradient(135deg, #db2777, #ec4899) !important;
+  box-shadow: 0 4px 16px rgba(219, 39, 119, 0.3) !important;
+}
+
+.composer-plus {
+  color: #fff;
+  background: linear-gradient(135deg, #059669, #34d399);
+  font-size: 1.5rem;
+  font-weight: 700;
+  box-shadow: 0 4px 16px rgba(5, 150, 105, 0.3);
+}
+
+.composer-image-generate {
+  color: #fff;
+  background: linear-gradient(135deg, #7c3aed, #a78bfa);
+  box-shadow: 0 4px 16px rgba(124, 58, 237, 0.3);
+}
+
+.composer-emoji-trigger {
+  color: #fff;
+  background: linear-gradient(135deg, #4f46e5, #818cf8);
+  box-shadow: 0 4px 16px rgba(79, 70, 229, 0.28);
+}
+
+.send-emoji {
+  color: #fff;
+  background: var(--accent-gradient);
+  box-shadow: 0 4px 20px rgba(13, 148, 136, 0.4);
+}
+
+.send-emoji:not(:disabled):hover {
+  background: var(--accent-gradient-hover);
+  box-shadow: 0 6px 24px rgba(13, 148, 136, 0.5);
+}
+
+/* ── Receive speed ───────────────────────────────────────────────────────── */
+.composer-receive-speed {
+  display: inline-flex;
+  flex: 0 0 auto;
+  align-items: baseline;
+  gap: 0.45rem;
+  margin-left: auto;
+  text-align: right;
+  white-space: nowrap;
+  color: var(--page-text-soft);
+}
+
+.composer-receive-speed-label {
+  font-size: 0.68rem;
+  letter-spacing: 0.14em;
+  text-transform: uppercase;
+  font-family: var(--font-mono);
+  color: var(--accent-color);
+}
+
+.composer-receive-speed-value {
+  font-size: 0.88rem;
+  font-variant-numeric: tabular-nums;
+  font-family: var(--font-mono);
+}
+
+/* ── Emoji picker ────────────────────────────────────────────────────────── */
+.composer-emoji-picker-shell { position: relative; }
+
+.composer-emoji-picker {
+  position: absolute;
+  right: 0;
+  bottom: calc(100% + 0.65rem);
+  z-index: 3;
+  display: grid;
+  grid-template-columns: repeat(5, minmax(0, 1fr));
+  gap: 0.35rem;
+  width: min(15rem, 72vw);
+  max-height: 10.5rem;
+  overflow-y: auto;
+  overflow-x: hidden;
+  padding: 0.75rem;
+  border: 1px solid var(--surface-border);
+  border-radius: 1.25rem;
+  background: var(--panel-background);
+  backdrop-filter: blur(20px);
+  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.06);
+}
+
+.composer-emoji-option {
+  width: 2.15rem;
+  height: 2.15rem;
+  padding: 0;
+  border: 0;
+  border-radius: 0.75rem;
+  background: var(--surface-background);
+  font-size: 1.2rem;
+  line-height: 1;
+  transition: background 120ms ease, transform 120ms ease;
+}
+
+.composer-emoji-option:hover,
+.composer-emoji-option:focus-visible {
+  background: var(--surface-hover-background);
+  transform: scale(1.12);
+}
+
+/* ── Misc helpers ────────────────────────────────────────────────────────── */
+.h3, .small { color: var(--page-text); }
+
+/* ── Mobile ──────────────────────────────────────────────────────────────── */
 @media (max-width: 767.98px) {
-  .chat-layout {
-    grid-template-columns: 1fr;
+  .chat-layout { grid-template-columns: 1fr; }
+
+  .status-indicators {
+    width: 100%;
+    margin-left: 0;
   }
 
-  .peer-list {
-    max-height: 16rem;
-  }
+  .bubble { max-width: 90%; }
 
-  .bubble {
-    max-width: 88%;
-  }
+  .composer-toolbar { justify-content: flex-start; }
 
-  .composer-toolbar {
-    justify-content: flex-start;
+  .composer-call,
+  .composer-hangup,
+  .composer-voice,
+  .composer-dictation,
+  .composer-image-generate,
+  .composer-emoji-trigger,
+  .composer-plus,
+  .send-emoji {
+    width: 2.6rem;
+    height: 2.6rem;
+    font-size: 1.1rem;
   }
 }

client/src/app/chat-page.component.ts

@@ -1,24 +1,43 @@
 import { CommonModule } from '@angular/common';
-import { Component, computed, effect, ElementRef, inject, NgZone, OnDestroy, signal, ViewChild } from '@angular/core';
+import { Component, computed, effect, ElementRef, inject, NgZone, OnDestroy, signal, untracked, ViewChild } from '@angular/core';
 import { toSignal } from '@angular/core/rxjs-interop';
 import { FormsModule } from '@angular/forms';
 import { ActivatedRoute, Router, RouterLink } from '@angular/router';
 
-import { PeerVideoModalComponent } from './peer-video-modal.component';
+import { BrowserSpeechTranscriberService } from './browser-speech-transcriber.service';
+import { PeerCallModalComponent } from './peer-call-modal.component';
 import { ChatSessionService } from './chat-session.service';
 import { JsonFileViewerComponent } from './json-file-viewer.component';
-import type { ChatEntry, ConnectionState, PeerSummary } from './models';
+import type { CallMode, ChatEntry, ConnectionState, PeerSummary } from './models';
+
+type KnownPeerSummary = {
+  id: string;
+  displayName: string;
+};
+
+type DropdownPeerSummary = PeerSummary & { knownOnly: boolean };
 
 @Component({
   selector: 'app-chat-page',
-  imports: [CommonModule, FormsModule, RouterLink, JsonFileViewerComponent, PeerVideoModalComponent],
+  imports: [
+    CommonModule,
+    FormsModule,
+    RouterLink,
+    JsonFileViewerComponent,
+    PeerCallModalComponent,
+  ],
   templateUrl: './chat-page.component.html',
   styleUrl: './chat-page.component.scss',
 })
 export class ChatPageComponent implements OnDestroy {
+  private static readonly knownPeersStoragePrefix = 'privatechat.knownPeers';
+  private readonly graphemeSegmenter = typeof Intl !== 'undefined' && 'Segmenter' in Intl
+    ? new Intl.Segmenter(undefined, { granularity: 'grapheme' })
+    : null;
   private readonly route = inject(ActivatedRoute);
   private readonly router = inject(Router);
   private readonly ngZone = inject(NgZone);
+  private readonly speechTranscriber = inject(BrowserSpeechTranscriberService);
   private readonly routeParamMap = toSignal(this.route.paramMap, {
     initialValue: this.route.snapshot.paramMap,
   });
@@ -37,49 +56,161 @@ export class ChatPageComponent implements OnDestroy {
   private dictationCompletionPromise: Promise<void> | null = null;
   private resolveDictationCompletion: (() => void) | null = null;
   private dictationApplyToken = 0;
+  private lastConversationSnapshot: { peerId: string; length: number; lastEntryId: string | null } | null = null;
+  private lastAutoConnectedPeerId: string | null = null;
   @ViewChild('callAudioElement')
   set callAudioElementRef(value: ElementRef<HTMLAudioElement> | undefined) {
     this.callAudioElement = value;
     this.syncCallAudioSource();
   }
   private callAudioElement?: ElementRef<HTMLAudioElement>;
+  @ViewChild('conversationContainer')
+  set conversationContainerRef(value: ElementRef<HTMLDivElement> | undefined) {
+    this.conversationContainer = value;
+  }
+  private conversationContainer?: ElementRef<HTMLDivElement>;
+  @ViewChild('fullscreenConversationContainer')
+  set fullscreenConversationContainerRef(value: ElementRef<HTMLDivElement> | undefined) {
+    this.fullscreenConversationContainer = value;
+  }
+  private fullscreenConversationContainer?: ElementRef<HTMLDivElement>;
 
   messageText = '';
   readonly forwardingEntryId = signal<string | null>(null);
+  readonly callChoicePeerId = signal<string | null>(null);
+  readonly conversationModalOpen = signal(false);
+  readonly peerDropdownOpen = signal(false);
   readonly emojiPickerOpen = signal(false);
   readonly isRecordingVoice = signal(false);
   readonly isDictating = signal(false);
   readonly isTranscribingDictation = signal(false);
+  readonly knownPeers = signal<KnownPeerSummary[]>([]);
   readonly emojiOptions = [
-    '😀', '😁', '😂', '🤣', '😊',
-    '😉', '😍', '😘', '😎', '🤔',
-    '😅', '😭', '😡', '😴', '🙃',
-    '👍', '👎', '👏', '🙏', '🤝',
-    '🎉', '🔥', '❤️', '💡', '✅',
-    '🚀', '👀', '📹', '📎', '💬',
-    '🌍', '⚡', '⭐', '🎵', '📷',
-    '🗑️', '⏩', '🛑', '🙌', '👌',
+    '😀', '😁', '😂', '🤣', '😃', '😄', '😅', '😆', '😉', '😊',
+    '😋', '😎', '😍', '😘', '🥰', '😗', '😙', '😚', '🙂', '🤗',
+    '🤩', '🤔', '🤨', '😐', '😑', '😶', '🙄', '😏', '😣', '😥',
+    '😮', '🤐', '😯', '😪', '😫', '🥱', '😴', '😌', '😛', '😜',
+    '😝', '🤤', '😒', '😓', '😔', '😕', '🙃', '🫠', '🤑', '😲',
+    '☹️', '🙁', '😖', '😞', '😟', '😤', '😢', '😭', '😦', '😧',
+    '😨', '😩', '🤯', '😬', '😰', '😱', '🥵', '🥶', '😳', '🤪',
+    '😵', '🥴', '😠', '😡', '🤬', '😷', '🤒', '🤕', '🤢', '🤮',
+    '🤧', '😇', '🥳', '🥺', '🤠', '🤡', '🤥', '🤫', '🤭', '🧐',
+    '🤓', '😈', '👿', '👹', '👺', '💀', '☠️', '👻', '👽', '🤖',
+    '💩', '😺', '😸', '😹', '😻', '😼', '😽', '🙀', '😿', '😾',
+    '🙈', '🙉', '🙊', '💋', '💌', '💘', '💝', '💖', '💗', '💓',
+    '💞', '💕', '❤️', '🧡', '💛', '💚', '💙', '💜', '🖤', '🤍',
+    '🤎', '💔', '❤️‍🔥', '❤️‍🩹', '❣️', '💯', '💢', '💥', '💫', '💦',
+    '💨', '🕳️', '💬', '🗨️', '🗯️', '💭', '💤', '👋', '🤚', '🖐️',
+    '✋', '🖖', '🫱', '🫲', '🫳', '🫴', '👌', '🤌', '🤏', '✌️',
+    '🤞', '🫰', '🤟', '🤘', '🤙', '👈', '👉', '👆', '👇', '☝️',
+    '👍', '👎', '✊', '👊', '🤛', '🤜', '👏', '🙌', '🫶', '👐',
+    '🤲', '🙏', '✍️', '💅', '🤳', '💪', '🦾', '🦿', '🦵', '🦶',
+    '👂', '🦻', '👃', '🧠', '🫀', '🫁', '🦷', '🦴', '👀', '👁️',
+    '👅', '👄', '🫦', '🌍', '🌎', '🌏', '🌕', '⭐', '🌟', '✨',
+    '⚡', '🔥', '💧', '🌈', '☀️', '🌤️', '⛅', '🌧️', '⛈️', '🌩️',
+    '❄️', '☃️', '☔', '🍎', '🍊', '🍋', '🍉', '🍇', '🍓', '🍒',
+    '🍑', '🍍', '🥥', '🥑', '🍔', '🍕', '🌮', '🍣', '🍪', '🎂',
+    '☕', '🍵', '🍹', '🎉', '🎈', '🎁', '🏆', '🚀', '📷', '🎵',
   ];
   readonly peerId = computed(() => this.routeParamMap().get('peerId') ?? '');
   readonly peer = computed(() => this.session.peers().find((item) => item.id === this.peerId()) ?? null);
+  readonly dropdownPeers = computed<DropdownPeerSummary[]>(() => {
+    const connectedPeers = this.session.peers();
+    const connectedPeerIds = new Set(connectedPeers.map((peer) => peer.id));
+    const knownOnlyPeers = this.knownPeers()
+      .filter((peer) => !connectedPeerIds.has(peer.id))
+      .sort((left, right) => left.displayName.localeCompare(right.displayName))
+      .map<DropdownPeerSummary>((peer) => ({
+        id: peer.id,
+        username: peer.id,
+        displayName: peer.displayName,
+        connectionState: 'disconnected',
+        channelState: 'closed',
+        knownOnly: true,
+      }));
+
+    return [
+      ...connectedPeers.map<DropdownPeerSummary>((peer) => ({ ...peer, knownOnly: false })),
+      ...knownOnlyPeers,
+    ];
+  });
+  readonly displayedPeer = computed<DropdownPeerSummary | null>(() => {
+    const selectedPeerId = this.peerId();
+    const peers = this.dropdownPeers();
+
+    return (selectedPeerId ? peers.find((peer) => peer.id === selectedPeerId) ?? null : null) ?? peers[0] ?? null;
+  });
   readonly currentUser = computed(() => this.session.currentUser());
-  readonly incomingVoiceCallPeer = computed(() => {
-    const peerId = this.session.incomingVoiceCallPeerId();
+  readonly callModalPeerId = computed(() =>
+    this.session.activeVoiceCallPeerId()
+      ?? this.session.incomingVoiceCallPeerId()
+      ?? this.session.outgoingVoiceCallPeerId()
+      ?? null,
+  );
+  readonly callModalPeer = computed(() => {
+    const peerId = this.callModalPeerId();
 
     return peerId ? this.session.peers().find((peer) => peer.id === peerId) ?? null : null;
   });
+  readonly callChoicePeer = computed(() => {
+    const peerId = this.callChoicePeerId();
+
+    return peerId ? this.dropdownPeers().find((peer) => peer.id === peerId) ?? null : null;
+  });
   readonly conversation = computed(() =>
     this.session
       .messages()
       .filter((entry) => entry.peerId === this.peerId()),
   );
-  readonly remoteVideoStream = computed(() => this.session.remoteVideoStreamForPeer(this.peerId()));
+  readonly lastIncomingReceiveMetric = computed(() => {
+    const metric = this.session.lastIncomingReceiveMetric();
+
+    return metric?.peerId === this.peerId() ? metric : null;
+  });
   readonly remoteCallAudioStream = computed(() =>
-    this.session.remoteAudioStreamForPeer(this.session.activeVoiceCallPeerId() ?? ''),
-  );
-  readonly remoteVideoModalVisible = computed(
-    () => this.session.remoteVideoModalPeerId() === this.peerId() && !!this.remoteVideoStream(),
+    this.session.remoteAudioStreamForPeer(this.callModalPeerId() ?? ''),
   );
+  readonly callModalMode = computed<CallMode>(() => this.session.callModeForPeer(this.callModalPeerId() ?? '') ?? 'video');
+  readonly localCallStream = computed(() => this.session.localCallStreamForPeer(this.callModalPeerId() ?? ''));
+  readonly remoteCallVideoStream = computed(() => this.session.remoteVideoStreamForPeer(this.callModalPeerId() ?? ''));
+  readonly callModalVisible = computed(() => !!this.callModalPeer());
+  readonly callModalState = computed<'incoming' | 'outgoing' | 'active'>(() => {
+    const peerId = this.callModalPeerId();
+
+    if (!peerId) {
+      return 'active';
+    }
+
+    if (this.session.incomingVoiceCallPeerId() === peerId) {
+      return 'incoming';
+    }
+
+    if (this.session.outgoingVoiceCallPeerId() === peerId) {
+      return 'outgoing';
+    }
+
+    return 'active';
+  });
+  readonly callModalStatusText = computed(() => {
+    const peer = this.callModalPeer();
+
+    if (!peer) {
+      return '';
+    }
+
+    switch (this.callModalState()) {
+      case 'incoming':
+        return `${peer.displayName} is calling you${this.callModalMode() === 'audio' ? ' with audio only.' : '.'}`;
+      case 'outgoing':
+        return this.callModalMode() === 'audio'
+          ? 'Calling… your microphone is ready.'
+          : 'Calling… your camera and microphone are ready.';
+      default:
+        return this.callModalMode() === 'audio'
+          ? 'Connected with live audio.'
+          : 'Connected with live video and audio.';
+    }
+  });
   readonly selectedPeerVoiceCallState = computed<'idle' | 'incoming' | 'outgoing' | 'active'>(() => {
     const peerId = this.peerId();
 
@@ -145,14 +276,68 @@ export class ChatPageComponent implements OnDestroy {
       void this.router.navigateByUrl('/');
     }
 
+    queueMicrotask(() => {
+      void this.speechTranscriber.preload().catch(() => undefined);
+    });
+
+    effect(() => {
+      const currentUserId = this.currentUser()?.id ?? null;
+      this.knownPeers.set(this.readKnownPeers(currentUserId));
+    });
+
+    effect(() => {
+      const connectedPeers = this.session.peers();
+
+      if (connectedPeers.length === 0) {
+        return;
+      }
+
+      this.mergeKnownPeers(
+        connectedPeers.map((peer) => ({ id: peer.id, displayName: peer.displayName })),
+      );
+    });
+
+    effect(() => {
+      const currentUserId = this.currentUser()?.id ?? null;
+      const knownPeersFromMessages = this.session.messages()
+        .filter((entry) => entry.direction !== 'system' && entry.kind !== 'system')
+        .map((entry) => ({
+          id: entry.peerId,
+          displayName: entry.direction === 'incoming' && entry.authorLabel !== 'You'
+            ? entry.authorLabel
+            : this.findKnownPeerDisplayName(entry.peerId) ?? entry.peerId,
+        }));
+
+      if (!currentUserId || knownPeersFromMessages.length === 0) {
+        return;
+      }
+
+      this.mergeKnownPeers(knownPeersFromMessages);
+    });
+
     effect(() => {
       const peerId = this.peerId();
+      const hasLivePeer = !!this.peer();
 
       if (!peerId) {
+        this.lastAutoConnectedPeerId = null;
         return;
       }
 
       this.session.selectPeer(peerId);
+
+      if (!hasLivePeer) {
+        if (this.lastAutoConnectedPeerId === peerId) {
+          this.lastAutoConnectedPeerId = null;
+        }
+        return;
+      }
+
+      if (this.lastAutoConnectedPeerId === peerId) {
+        return;
+      }
+
+      this.lastAutoConnectedPeerId = peerId;
       void this.session.connectToPeer(peerId);
     });
 
@@ -160,6 +345,32 @@ export class ChatPageComponent implements OnDestroy {
       this.remoteCallAudioStream();
       this.syncCallAudioSource();
     });
+
+    effect(() => {
+      const peerId = this.peerId();
+      const entries = this.conversation();
+      const snapshot = {
+        peerId,
+        length: entries.length,
+        lastEntryId: entries.at(-1)?.id ?? null,
+      };
+      const previousSnapshot = this.lastConversationSnapshot;
+
+      this.lastConversationSnapshot = snapshot;
+
+      if (!peerId || !previousSnapshot || previousSnapshot.peerId !== peerId) {
+        return;
+      }
+
+      const hasNewTailEntry = snapshot.length > previousSnapshot.length
+        || (snapshot.length > 0 && snapshot.lastEntryId !== previousSnapshot.lastEntryId);
+
+      if (!hasNewTailEntry) {
+        return;
+      }
+
+      this.scrollConversationToBottom();
+    });
   }
 
   ngOnDestroy(): void {
@@ -171,12 +382,12 @@ export class ChatPageComponent implements OnDestroy {
   async ensureConnection(): Promise<void> {
     const peerId = this.peerId();
 
-    if (!peerId) {
+    if (!peerId || !this.peer()) {
       return;
     }
 
     this.session.selectPeer(peerId);
-    await this.session.connectToPeer(peerId);
+    await this.session.reconnectToPeer(peerId);
   }
 
   async sendMessage(): Promise<void> {
@@ -265,6 +476,29 @@ export class ChatPageComponent implements OnDestroy {
     });
   }
 
+  openCallChoice(peerId: string): void {
+    if (!peerId) {
+      return;
+    }
+
+    this.callChoicePeerId.set(peerId);
+  }
+
+  closeCallChoice(): void {
+    this.callChoicePeerId.set(null);
+  }
+
+  async startSelectedCall(mode: CallMode): Promise<void> {
+    const peerId = this.callChoicePeerId() ?? this.peerId();
+
+    if (!peerId) {
+      return;
+    }
+
+    this.callChoicePeerId.set(null);
+    await this.session.startVoiceCall(peerId, mode);
+  }
+
   async sendFile(peerId: string, input: HTMLInputElement): Promise<void> {
     const file = input.files?.item(0);
 
@@ -436,9 +670,21 @@ export class ChatPageComponent implements OnDestroy {
     await this.session.deleteMessage(entry);
   }
 
+  isEmojiOnlyEntry(entry: ChatEntry): boolean {
+    if (entry.kind !== 'text' || entry.direction === 'system' || !entry.text?.trim()) {
+      return false;
+    }
+
+    return entry.text
+      .trim()
+      .split(/\s+/u)
+      .every((token) => this.isEmojiToken(token));
+  }
+
   async deleteConversation(peerId: string, event?: Event): Promise<void> {
     event?.stopPropagation();
     await this.session.deleteConversation(peerId);
+    this.removeKnownPeer(peerId);
   }
 
   toggleForwardMenu(entry: ChatEntry, event?: Event): void {
@@ -464,6 +710,33 @@ export class ChatPageComponent implements OnDestroy {
     return this.session.peers().filter((peer) => peer.id !== entry.peerId);
   }
 
+  togglePeerDropdown(): void {
+    if (this.dropdownPeers().length === 0) {
+      return;
+    }
+
+    this.peerDropdownOpen.update((open) => !open);
+  }
+
+  closePeerDropdown(): void {
+    this.peerDropdownOpen.set(false);
+  }
+
+  openConversationModal(): void {
+    this.closePeerDropdown();
+    this.conversationModalOpen.set(true);
+    this.scrollConversationToBottom();
+  }
+
+  closeConversationModal(): void {
+    this.conversationModalOpen.set(false);
+  }
+
+  async selectPeerFromDropdown(peerId: string): Promise<void> {
+    this.closePeerDropdown();
+    await this.switchPeer(peerId);
+  }
+
   async forwardEntry(entry: ChatEntry, targetPeerId: string, select: HTMLSelectElement): Promise<void> {
     if (!targetPeerId) {
       return;
@@ -474,17 +747,14 @@ export class ChatPageComponent implements OnDestroy {
     this.forwardingEntryId.set(null);
   }
 
-  async toggleCameraStream(peerId: string): Promise<void> {
-    if (this.session.isStreamingCameraToPeer(peerId)) {
-      await this.session.stopCameraStream(peerId);
+  async sendGeneratedImage(entry: ChatEntry): Promise<void> {
+    const peerId = this.peerId();
+
+    if (!peerId) {
       return;
     }
 
-    await this.session.startCameraStream(peerId);
-  }
-
-  async startVoiceCall(peerId: string): Promise<void> {
-    await this.session.startVoiceCall(peerId);
+    await this.session.sendGeneratedImageToPeer(entry, peerId);
   }
 
   async endVoiceCall(peerId: string): Promise<void> {
@@ -496,10 +766,6 @@ export class ChatPageComponent implements OnDestroy {
       return;
     }
 
-    if (peerId !== this.peerId()) {
-      await this.router.navigate(['/chat', peerId]);
-    }
-
     await this.session.acceptVoiceCall(peerId);
   }
 
@@ -512,7 +778,19 @@ export class ChatPageComponent implements OnDestroy {
   }
 
   isImageEntry(entry: ChatEntry): boolean {
-    return entry.kind === 'file' && !!entry.downloadUrl && (entry.fileMimeType?.startsWith('image/') ?? false);
+    return entry.kind === 'file' && !!this.imageDisplayUrl(entry);
+  }
+
+  isGeneratedImageEntry(entry: ChatEntry): boolean {
+    return this.isImageEntry(entry) && entry.generatedByAi === true;
+  }
+
+  imageDisplayUrl(entry: ChatEntry): string | null {
+    if (entry.kind !== 'file' || !(entry.fileMimeType?.startsWith('image/') ?? false)) {
+      return null;
+    }
+
+    return entry.previewDownloadUrl ?? entry.downloadUrl ?? null;
   }
 
   isVideoEntry(entry: ChatEntry): boolean {
@@ -537,6 +815,23 @@ export class ChatPageComponent implements OnDestroy {
     );
   }
 
+  hasDocumentPreviewImage(entry: ChatEntry): boolean {
+    return (
+      entry.kind === 'file' &&
+      !(entry.fileMimeType?.startsWith('image/') ?? false) &&
+      !!entry.previewDownloadUrl &&
+      (entry.previewMimeType?.startsWith('image/') ?? false)
+    );
+  }
+
+  documentPreviewImageUrl(entry: ChatEntry): string | null {
+    if (!this.hasDocumentPreviewImage(entry)) {
+      return null;
+    }
+
+    return entry.previewDownloadUrl ?? null;
+  }
+
   isPeerTyping(peerId: string): boolean {
     return this.session.typingPeerIds().includes(peerId);
   }
@@ -545,6 +840,10 @@ export class ChatPageComponent implements OnDestroy {
     return this.session.unreadPeerIds().includes(peerId);
   }
 
+  isPendingOutgoingEntry(entry: ChatEntry): boolean {
+    return entry.direction === 'outgoing' && entry.deliveryState === 'pending';
+  }
+
   indicatorTone(state: ConnectionState): 'ok' | 'connecting' | 'offline' {
     if (state === 'connected') {
       return 'ok';
@@ -558,23 +857,7 @@ export class ChatPageComponent implements OnDestroy {
   }
 
   canReconnectWebRtc(): boolean {
-    return this.indicatorTone(this.webRtcState()) === 'offline';
-  }
-
-  isStreamingCameraToSelectedPeer(): boolean {
-    const peerId = this.peerId();
-
-    return !!peerId && this.session.isStreamingCameraToPeer(peerId);
-  }
-
-  closeRemoteVideoModal(): void {
-    const peerId = this.peerId();
-
-    if (!peerId) {
-      return;
-    }
-
-    this.session.dismissRemoteVideoModal(peerId);
+    return !!this.peerId() && !!this.peer() && this.indicatorTone(this.webRtcState()) !== 'ok';
   }
 
   async switchPeer(peerId: string): Promise<void> {
@@ -585,11 +868,163 @@ export class ChatPageComponent implements OnDestroy {
     await this.stopDictation(true);
     this.stopVoiceRecording(true);
     this.forwardingEntryId.set(null);
+    this.callChoicePeerId.set(null);
+    this.conversationModalOpen.set(false);
+    this.peerDropdownOpen.set(false);
     this.emojiPickerOpen.set(false);
-    this.session.selectPeer(peerId);
     await this.router.navigate(['/chat', peerId]);
   }
 
+  private mergeKnownPeers(peers: Array<{ id: string; displayName?: string }>): void {
+    const currentUserId = this.currentUser()?.id;
+
+    if (!currentUserId) {
+      return;
+    }
+
+    const currentKnownPeers = untracked(this.knownPeers);
+    const nextPeers = this.normalizeKnownPeers([
+      ...currentKnownPeers,
+      ...peers,
+    ], currentUserId);
+
+    if (this.areKnownPeersEqual(nextPeers, currentKnownPeers)) {
+      return;
+    }
+
+    this.knownPeers.set(nextPeers);
+    this.writeKnownPeers(currentUserId, nextPeers);
+  }
+
+  private removeKnownPeer(peerId: string): void {
+    const currentUserId = this.currentUser()?.id;
+
+    if (!currentUserId) {
+      return;
+    }
+
+    const currentKnownPeers = untracked(this.knownPeers);
+    const nextPeers = currentKnownPeers.filter((knownPeer) => knownPeer.id !== peerId);
+
+    if (nextPeers.length === currentKnownPeers.length) {
+      return;
+    }
+
+    this.knownPeers.set(nextPeers);
+    this.writeKnownPeers(currentUserId, nextPeers);
+  }
+
+  private readKnownPeers(currentUserId: string | null): KnownPeerSummary[] {
+    if (!currentUserId) {
+      return [];
+    }
+
+    const storedValue = this.readStorage(this.knownPeersStorageKey(currentUserId));
+
+    if (!storedValue) {
+      return [];
+    }
+
+    try {
+      const parsedValue = JSON.parse(storedValue);
+
+      if (!Array.isArray(parsedValue)) {
+        return [];
+      }
+
+      return this.normalizeKnownPeers(parsedValue, currentUserId);
+    } catch {
+      return [];
+    }
+  }
+
+  private writeKnownPeers(currentUserId: string, peers: KnownPeerSummary[]): void {
+    const storageKey = this.knownPeersStorageKey(currentUserId);
+
+    if (peers.length === 0) {
+      this.removeStorage(storageKey);
+      return;
+    }
+
+    this.writeStorage(storageKey, JSON.stringify(peers));
+  }
+
+  private normalizeKnownPeers(peers: unknown[], currentUserId: string): KnownPeerSummary[] {
+    const peerMap = new Map<string, KnownPeerSummary>();
+
+    for (const peer of peers) {
+      if (typeof peer === 'string') {
+        const id = peer.trim();
+
+        if (!id || id === currentUserId) {
+          continue;
+        }
+
+        peerMap.set(id, { id, displayName: id });
+        continue;
+      }
+
+      if (!peer || typeof peer !== 'object') {
+        continue;
+      }
+
+      const candidate = peer as Partial<KnownPeerSummary>;
+      const id = typeof candidate.id === 'string' ? candidate.id.trim() : '';
+
+      if (!id || id === currentUserId) {
+        continue;
+      }
+
+      const displayName = typeof candidate.displayName === 'string' && candidate.displayName.trim()
+        ? candidate.displayName.trim()
+        : peerMap.get(id)?.displayName ?? id;
+
+      peerMap.set(id, { id, displayName });
+    }
+
+    return Array.from(peerMap.values())
+      .sort((left, right) => left.displayName.localeCompare(right.displayName));
+  }
+
+  private areKnownPeersEqual(left: KnownPeerSummary[], right: KnownPeerSummary[]): boolean {
+    return left.length === right.length
+      && left.every((peer, index) =>
+        peer.id === right[index]?.id && peer.displayName === right[index]?.displayName,
+      );
+  }
+
+  private findKnownPeerDisplayName(peerId: string): string | null {
+    return untracked(this.knownPeers).find((peer) => peer.id === peerId)?.displayName ?? null;
+  }
+
+  private knownPeersStorageKey(currentUserId: string): string {
+    return `${ChatPageComponent.knownPeersStoragePrefix}.${currentUserId}`;
+  }
+
+  private readStorage(key: string): string | null {
+    try {
+      return localStorage.getItem(key);
+    } catch {
+      return null;
+    }
+  }
+
+  private writeStorage(key: string, value: string): void {
+    try {
+      localStorage.setItem(key, value);
+    } catch {
+      // Ignore storage errors in private browsing modes.
+    }
+  }
+
+  private removeStorage(key: string): void {
+    try {
+      localStorage.removeItem(key);
+    } catch {
+      // Ignore storage errors in private browsing modes.
+    }
+  }
+
   private stopVoiceRecording(discard: boolean): void {
     const recorder = this.voiceRecorder;
 
@@ -686,16 +1121,16 @@ export class ChatPageComponent implements OnDestroy {
 
   private async transcribeDictation(blob: Blob, textarea: HTMLTextAreaElement, applyToken: number): Promise<void> {
     try {
-      const transcript = await this.session.requestSpeechTranscription(blob);
+      const transcript = await this.speechTranscriber.transcribe(blob);
 
       if (applyToken !== this.dictationApplyToken) {
         return;
       }
 
       this.applyDictatedText(this.mergeDictatedText(this.dictationBaseText, transcript), textarea);
-    } catch {
+    } catch (error) {
       if (applyToken === this.dictationApplyToken) {
-        this.session.error.set('Dictation transcription failed.');
+        this.session.error.set(error instanceof Error ? error.message : 'Dictation transcription failed.');
       }
     } finally {
       if (applyToken === this.dictationApplyToken) {
@@ -764,4 +1199,36 @@ export class ChatPageComponent implements OnDestroy {
     audio.pause();
     audio.srcObject = null;
   }
+
+  private scrollConversationToBottom(): void {
+    queueMicrotask(() => {
+      requestAnimationFrame(() => {
+        for (const container of [
+          this.conversationContainer?.nativeElement,
+          this.fullscreenConversationContainer?.nativeElement,
+        ]) {
+          if (!container) {
+            continue;
+          }
+
+          container.scrollTop = container.scrollHeight;
+        }
+      });
+    });
+  }
+
+  private isEmojiToken(token: string): boolean {
+    if (!token) {
+      return false;
+    }
+
+    const graphemes = this.graphemeSegmenter
+      ? Array.from(this.graphemeSegmenter.segment(token), ({ segment }) => segment)
+      : [token];
+
+    return graphemes.every((grapheme) =>
+      /[\p{Emoji}\p{Extended_Pictographic}\u20E3]/u.test(grapheme)
+      && /^[\p{Emoji}\p{Emoji_Component}\p{Extended_Pictographic}\u200D\uFE0F\u20E3]+$/u.test(grapheme),
+    );
+  }
 }

client/src/app/home-page.component.html

@@ -53,22 +53,11 @@
               <div class="d-flex justify-content-between align-items-center mb-4">
                 <div>
                   <h2 class="h3 mb-1">Connect to the signaling backend</h2>
-                  <p class="text-secondary mb-0">Use the Fastify server for authentication and peer discovery.</p>
+                  <p class="text-secondary mb-0">Use the current browser host for authentication and peer discovery.</p>
                 </div>
                 <span class="badge rounded-pill text-bg-dark">Angular + Bootstrap</span>
               </div>
 
-              <div class="mb-3">
-                <label class="form-label" for="serverUrl">Backend URL</label>
-                <input
-                  id="serverUrl"
-                  name="serverUrl"
-                  class="form-control form-control-lg"
-                  [(ngModel)]="serverUrl"
-                  placeholder="http://localhost:3000"
-                />
-              </div>
-
               <div class="btn-group mb-4 w-100" role="group" aria-label="Authentication mode">
                 <button
                   class="btn"
@@ -177,49 +166,123 @@
       }
     } @else {
       <section class="row g-4 align-items-stretch">
-        <div class="col-lg-5">
+        <div class="col-12">
           <div class="panel p-4 h-100">
-            <div class="d-flex justify-content-between align-items-start gap-3 mb-3">
+            <div class="d-flex justify-content-between align-items-start gap-3 mb-4">
               <div>
-                <h2 class="h3 mb-1">Connection settings</h2>
-                <p class="text-secondary mb-0">Manage the backend endpoint used for auth and signaling.</p>
+                <h2 class="h3 mb-1">Account tools</h2>
+                <p class="text-secondary mb-0">This session uses the current browser host for auth and signaling.</p>
               </div>
               @if (session.isApprovalAdmin()) {
                 <a class="btn btn-sm btn-outline-light" routerLink="/approvals">Approvals</a>
               }
             </div>
 
-            @if (!embeddedMode) {
-              <label class="form-label" for="connectedServerUrl">Backend URL</label>
-              <div class="input-group mb-3">
-                <input
-                  id="connectedServerUrl"
-                  class="form-control"
-                  [(ngModel)]="serverUrl"
-                  (blur)="applyServerUrl()"
-                />
-                <button class="btn btn-outline-secondary" type="button" (click)="applyServerUrl()">Apply</button>
-              </div>
-            } @else {
-              <div class="empty-state p-4 text-center text-secondary">
-                Backend settings are managed by the native app in embedded mode.
-              </div>
-            }
-
-            <div class="small status-pill mt-3">{{ session.status() }}</div>
+            <div class="small status-pill mb-3">{{ session.status() }}</div>
 
             @if (session.error()) {
-              <div class="alert alert-danger mt-4 mb-0">{{ session.error() }}</div>
+              <div class="alert alert-danger mb-3">{{ session.error() }}</div>
             }
 
             @if (session.notice()) {
-              <div class="alert alert-success mt-4 mb-0">{{ session.notice() }}</div>
+              <div class="alert alert-success mb-4">{{ session.notice() }}</div>
             }
-          </div>
-        </div>
 
-        <div class="col-lg-7">
-          <div class="panel p-4 h-100">
+            <section class="access-key-panel mb-4">
+              <div class="dictation-language-panel">
+                <div>
+                  <h3 class="h5 mb-1">Dictation language</h3>
+                  <p class="small text-secondary mb-0">
+                    Speech input and text output use the same selected language.
+                  </p>
+                </div>
+
+                <div class="dictation-language-select-shell mt-3">
+                  <label class="form-label small mb-2" for="dictationLanguage">Language</label>
+                  <select
+                    id="dictationLanguage"
+                    class="form-select"
+                    [ngModel]="session.dictationLanguage()"
+                    (ngModelChange)="setDictationLanguage($event)"
+                  >
+                    @for (option of dictationLanguageOptions; track option.value) {
+                      <option [ngValue]="option.value">{{ option.label }}</option>
+                    }
+                  </select>
+                </div>
+              </div>
+            </section>
+
+            <section class="access-key-panel mb-4">
+              <div class="d-flex justify-content-between align-items-start gap-3">
+                <div>
+                  <h3 class="h5 mb-1">Notifications</h3>
+                  <p class="small text-secondary mb-0">Play a sound when any incoming message or file arrives.</p>
+                </div>
+                <div class="form-check form-switch m-0">
+                  <input
+                    id="incomingMessageSoundEnabled"
+                    class="form-check-input"
+                    type="checkbox"
+                    [ngModel]="session.incomingMessageSoundEnabled()"
+                    (ngModelChange)="setIncomingMessageSound($event)"
+                  />
+                  <label class="form-check-label small" for="incomingMessageSoundEnabled">
+                    {{ session.incomingMessageSoundEnabled() ? 'On' : 'Off' }}
+                  </label>
+                </div>
+              </div>
+            </section>
+
+            <section class="access-key-panel user-search-panel mb-4">
+              <div class="d-flex justify-content-between align-items-start gap-3 mb-3">
+                <div>
+                  <h3 class="h5 mb-1">Find people</h3>
+                  <p class="small text-secondary mb-0">Search approved accounts and add them to the chat peer list.</p>
+                </div>
+                <button
+                  class="btn btn-sm btn-outline-light"
+                  type="button"
+                  [disabled]="loadingKnownUsers()"
+                  (click)="reloadKnownUsers()"
+                >
+                  Refresh
+                </button>
+              </div>
+
+              <div class="user-search-shell">
+                <input
+                  class="form-control"
+                  [(ngModel)]="userSearch"
+                  placeholder="Search by display name or username"
+                />
+
+                @if (knownUsersError()) {
+                  <div class="alert alert-danger mt-3 mb-0">{{ knownUsersError() }}</div>
+                } @else if (loadingKnownUsers()) {
+                  <div class="empty-state p-3 text-center text-secondary mt-3">Loading users...</div>
+                } @else if (filteredKnownUsers().length === 0) {
+                  <div class="empty-state p-3 text-center text-secondary mt-3">No matching users found.</div>
+                } @else {
+                  <div class="user-search-results mt-3">
+                    @for (user of filteredKnownUsers(); track user.id) {
+                      <button class="user-search-result" type="button" (click)="addKnownPeer(user)">
+                        <span class="user-search-result-copy">
+                          <span class="fw-semibold">{{ user.displayName }}</span>
+                          <span class="small text-secondary">@{{ user.username }}</span>
+                        </span>
+                        <span class="user-search-result-action">Add</span>
+                      </button>
+                    }
+                  </div>
+                }
+              </div>
+
+              @if (knownUsersNotice()) {
+                <div class="small text-secondary mt-3">{{ knownUsersNotice() }}</div>
+              }
+            </section>
+
             <section class="access-key-panel">
               <div class="d-flex justify-content-between align-items-start gap-3 mb-3">
                 <div>

client/src/app/home-page.component.scss

@@ -8,144 +8,130 @@
   min-height: 100dvh;
 }
 
+/* ── Panel primitives ───────────────────────────────────────────────────── */
 .hero-panel,
 .panel,
 .session-card,
 .empty-state {
   border: 1px solid var(--surface-border);
   background: var(--panel-background);
-  backdrop-filter: blur(18px);
-  box-shadow: 0 20px 60px var(--shadow-color);
+  backdrop-filter: blur(20px);
+  -webkit-backdrop-filter: blur(20px);
+  box-shadow:
+    0 24px 64px var(--shadow-color),
+    inset 0 1px 0 rgba(255, 255, 255, 0.06);
 }
 
-.hero-panel {
-  border-radius: 2rem;
-}
-
-.panel,
-.session-card {
-  border-radius: 1.5rem;
-}
+.hero-panel  { border-radius: 2rem; }
+.panel       { border-radius: 1.75rem; }
+.session-card { border-radius: 1.5rem; }
 
 .panel-muted {
   background: var(--panel-alt-background);
 }
 
-.hero-copy {
-  max-width: 52rem;
-}
+/* ── Hero header ────────────────────────────────────────────────────────── */
+.hero-copy { max-width: 52rem; }
 
 .eyebrow {
   display: inline-flex;
   align-items: center;
   gap: 0.5rem;
-  padding: 0.45rem 0.85rem;
+  padding: 0.4rem 0.9rem;
   border-radius: 999px;
-  margin-bottom: 1rem;
-  letter-spacing: 0.14em;
+  margin-bottom: 0.75rem;
+  letter-spacing: 0.18em;
   text-transform: uppercase;
-  font-size: 0.72rem;
+  font-size: 0.68rem;
   font-weight: 700;
+  font-family: var(--font-mono);
   color: var(--accent-color);
   background: var(--accent-color-soft);
+  border: 1px solid color-mix(in srgb, var(--accent-color) 25%, transparent);
 }
 
+.eyebrow::before {
+  content: '';
+  width: 0.45rem;
+  height: 0.45rem;
+  border-radius: 50%;
+  background: var(--accent-color);
+  animation: glow-pulse 3s ease-in-out infinite;
+}
+
+/* ── Theme toggle ───────────────────────────────────────────────────────── */
 .theme-toggle {
   display: inline-flex;
   align-items: center;
-  gap: 0.55rem;
+  gap: 0.5rem;
   min-width: 7.5rem;
-  height: 3rem;
-  padding: 0 0.95rem;
+  height: 2.75rem;
+  padding: 0 1rem;
   border: 1px solid var(--surface-border);
   border-radius: 999px;
   color: var(--page-text);
-  background: var(--panel-soft-background);
-  font-size: 0.95rem;
-  font-weight: 700;
-  text-transform: capitalize;
+  background: rgba(255, 255, 255, 0.04);
+  font-size: 0.88rem;
+  font-weight: 600;
+  font-family: var(--font-mono);
+  text-transform: uppercase;
+  letter-spacing: 0.06em;
   line-height: 1;
-  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease;
+  transition: transform 160ms ease, background 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
 }
 
-.theme-toggle-icon {
-  font-size: 1.25rem;
-}
-
-.theme-toggle-label {
-  letter-spacing: 0.03em;
-}
+.theme-toggle-icon { font-size: 1.15rem; }
+.theme-toggle-label { letter-spacing: 0.06em; }
 
 .theme-toggle:hover,
 .theme-toggle:focus-visible {
-  border-color: color-mix(in srgb, var(--accent-color) 35%, var(--surface-border));
+  border-color: color-mix(in srgb, var(--accent-color) 40%, transparent);
   background: var(--surface-hover-background);
   transform: translateY(-1px);
+  box-shadow: 0 0 0 3px var(--accent-color-soft);
 }
 
+/* ── Session card ───────────────────────────────────────────────────────── */
 .session-card { min-width: min(100%, 18rem); }
 
 .status-pill {
   display: inline-flex;
-  padding: 0.45rem 0.8rem;
+  align-items: center;
+  gap: 0.5rem;
+  padding: 0.38rem 0.85rem;
   border-radius: 999px;
   background: var(--badge-background);
-}
-
-.btn-accent,
-.btn-accent:hover,
-.btn-accent:focus-visible {
-  color: #06111d;
-  border: 0;
-}
-
-.btn-accent {
-  background: var(--accent-gradient);
-}
-
-.btn-accent:hover,
-.btn-accent:focus-visible {
-  background: var(--accent-gradient-hover);
-}
-
-.access-key-panel {
-  padding: 1rem;
-  border-radius: 1rem;
-  background: var(--panel-soft-background);
-}
-
-.access-key-card {
-  border-radius: 0.9rem;
   border: 1px solid var(--surface-border-soft);
-  background: var(--surface-background);
-}
-
-.empty-state {
-  border-radius: 1.25rem;
-}
-
-.info-rail article {
-  padding: 1rem 1.1rem;
-  border-radius: 1rem;
-  background: var(--panel-soft-background);
+  font-family: var(--font-mono);
+  font-size: 0.72rem;
+  letter-spacing: 0.06em;
+  text-transform: uppercase;
+  color: var(--page-text-soft);
 }
 
+/* ── Auth form card ─────────────────────────────────────────────────────── */
 .form-control,
-.form-control:focus {
+.form-control:focus,
+.form-select,
+.form-select:focus {
   color: var(--page-text);
   background-color: var(--input-background);
   border-color: var(--input-border);
+  border-radius: 0.85rem;
   box-shadow: none;
+  transition: border-color 160ms ease, box-shadow 160ms ease;
 }
 
-.form-control::placeholder {
-  color: var(--placeholder-color);
+.form-control:focus,
+.form-select:focus {
+  border-color: color-mix(in srgb, var(--accent-color) 55%, transparent);
+  box-shadow: 0 0 0 3px var(--accent-color-soft);
 }
 
+.form-control::placeholder { color: var(--placeholder-color); }
+
 .form-label,
-.h3,
-.h4,
-.display-5,
+.h3, .h4, .h5,
 .fw-semibold,
 .fw-bold {
   color: var(--page-text);
@@ -156,3 +142,134 @@
 .small {
   color: var(--page-text-muted) !important;
 }
+
+/* Auth tab toggle */
+.btn-group .btn {
+  border-radius: 0.75rem;
+  font-weight: 500;
+  font-size: 0.9rem;
+}
+
+.btn-group .btn-primary {
+  background: var(--accent-gradient);
+  border-color: transparent;
+  color: #fff;
+  box-shadow: 0 2px 12px rgba(13, 148, 136, 0.28);
+}
+
+.btn-group .btn-outline-primary {
+  color: var(--page-text-muted);
+  border-color: var(--surface-border);
+  background: transparent;
+}
+
+.btn-group .btn-outline-primary:hover {
+  background: var(--panel-soft-background);
+  color: var(--page-text);
+}
+
+/* ── Access key / settings panels ──────────────────────────────────────── */
+.access-key-panel {
+  padding: 1.1rem 1.25rem;
+  border-radius: 1.25rem;
+  background: var(--panel-soft-background);
+  border: 1px solid var(--surface-border-soft);
+  transition: border-color 160ms ease;
+}
+
+.access-key-panel:hover {
+  border-color: var(--surface-border);
+}
+
+.access-key-card {
+  border-radius: 1rem;
+  border: 1px solid var(--surface-border-soft);
+  background: var(--surface-background);
+  transition: border-color 160ms ease;
+}
+
+.access-key-card:hover {
+  border-color: var(--surface-border);
+}
+
+/* ── User search ────────────────────────────────────────────────────────── */
+.user-search-panel,
+.user-search-shell,
+.dictation-language-panel,
+.dictation-language-select-shell {
+  display: grid;
+  gap: 0.75rem;
+}
+
+.user-search-results {
+  display: grid;
+  gap: 0.5rem;
+}
+
+.user-search-result {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  width: 100%;
+  padding: 0.85rem 1rem;
+  border: 1px solid var(--surface-border-soft);
+  border-radius: 1rem;
+  color: var(--page-text);
+  background: var(--surface-background);
+  text-align: left;
+  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
+}
+
+.user-search-result:hover,
+.user-search-result:focus-visible {
+  border-color: color-mix(in srgb, var(--accent-color) 38%, transparent);
+  background: var(--surface-hover-background);
+  transform: translateY(-1px);
+}
+
+.user-search-result-copy {
+  display: grid;
+  gap: 0.08rem;
+  min-width: 0;
+}
+
+.user-search-result-action {
+  flex: 0 0 auto;
+  font-size: 0.72rem;
+  font-weight: 700;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+  font-family: var(--font-mono);
+  color: var(--accent-color);
+}
+
+/* ── How-it-works info rail ─────────────────────────────────────────────── */
+.info-rail article {
+  padding: 1rem 1.15rem;
+  border-radius: 1rem;
+  background: var(--panel-soft-background);
+  border: 1px solid var(--surface-border-soft);
+  position: relative;
+  overflow: hidden;
+}
+
+.info-rail article::before {
+  content: attr(data-step);
+  position: absolute;
+  top: 0.65rem;
+  right: 0.9rem;
+  font-family: var(--font-mono);
+  font-size: 0.65rem;
+  letter-spacing: 0.12em;
+  text-transform: uppercase;
+  color: var(--accent-color);
+  opacity: 0.7;
+}
+
+/* ── Empty state ────────────────────────────────────────────────────────── */
+.empty-state {
+  border-radius: 1.25rem;
+  border: 1px dashed var(--surface-border);
+  background: var(--panel-soft-background) !important;
+}

client/src/app/home-page.component.ts

@@ -1,10 +1,10 @@
 import { CommonModule } from '@angular/common';
-import { Component, effect, inject, signal } from '@angular/core';
+import { Component, computed, effect, inject, signal } from '@angular/core';
 import { FormsModule } from '@angular/forms';
 import { Router, RouterLink } from '@angular/router';
 
 import { ChatSessionService } from './chat-session.service';
-import type { AdminUserSummary } from './models';
+import type { AdminUserSummary, DictationLanguage, UserProfile } from './models';
 import { ThemeService } from './theme.service';
 
 @Component({
@@ -19,19 +19,41 @@ export class HomePageComponent {
   authMode: 'login' | 'register' = 'login';
   readonly embeddedMode =
     typeof window !== 'undefined' && window.localStorage.getItem('privatechat.embeddedMode') === '1';
-  serverUrl = '';
   displayName = '';
   username = '';
   password = '';
   accessKeyLabel = '';
+  userSearch = '';
   readonly adminUsers = signal<AdminUserSummary[]>([]);
+  readonly knownUsers = signal<UserProfile[]>([]);
+  readonly loadingKnownUsers = signal(false);
+  readonly knownUsersError = signal<string | null>(null);
+  readonly knownUsersNotice = signal<string | null>(null);
   readonly loadingAdminUsers = signal(false);
   readonly deletingUserId = signal<string | null>(null);
   readonly adminUsersError = signal<string | null>(null);
+  readonly dictationLanguageOptions: Array<{ value: DictationLanguage; label: string }> = [
+    { value: 'en', label: 'English' },
+    { value: 'fr', label: 'French' },
+    { value: 'es', label: 'Spanish' },
+  ];
+  readonly filteredKnownUsers = computed(() => {
+    const query = this.userSearch.trim().toLowerCase();
+    const users = this.knownUsers();
+
+    if (!query) {
+      return users.slice(0, 8);
+    }
+
+    return users
+      .filter((user) =>
+        user.displayName.toLowerCase().includes(query)
+        || user.username.toLowerCase().includes(query),
+      )
+      .slice(0, 8);
+  });
 
   constructor(readonly session: ChatSessionService) {
-    this.serverUrl = session.serverUrl();
-
     if (this.embeddedMode) {
       effect(() => {
         const currentUser = this.session.currentUser();
@@ -45,6 +67,21 @@ export class HomePageComponent {
       });
     }
 
+    effect(() => {
+      const currentUser = this.session.currentUser();
+
+      if (!currentUser) {
+        this.knownUsers.set([]);
+        this.loadingKnownUsers.set(false);
+        this.knownUsersError.set(null);
+        this.knownUsersNotice.set(null);
+        this.userSearch = '';
+        return;
+      }
+
+      void this.reloadKnownUsers();
+    });
+
     effect(() => {
       const currentUser = this.session.currentUser();
 
@@ -60,8 +97,6 @@ export class HomePageComponent {
   }
 
   async submitAuth(): Promise<void> {
-    this.applyServerUrl();
-
     if (this.authMode === 'register') {
       const authenticated = await this.session.register(this.username, this.password, this.displayName);
       this.password = '';
@@ -76,10 +111,6 @@ export class HomePageComponent {
     await this.session.login(this.username, this.password);
   }
 
-  applyServerUrl(): void {
-    this.session.setServerUrl(this.serverUrl);
-  }
-
   async logout(): Promise<void> {
     await this.session.logout();
     this.authMode = 'login';
@@ -88,7 +119,6 @@ export class HomePageComponent {
   }
 
   async loginWithAccessKey(): Promise<void> {
-    this.applyServerUrl();
     await this.session.loginWithAccessKey(this.username);
     this.password = '';
   }
@@ -98,6 +128,27 @@ export class HomePageComponent {
     this.accessKeyLabel = '';
   }
 
+  async reloadKnownUsers(): Promise<void> {
+    this.loadingKnownUsers.set(true);
+    this.knownUsersError.set(null);
+
+    try {
+      this.knownUsers.set(await this.session.loadKnownUsers());
+    } catch (error) {
+      this.knownUsersError.set(
+        error instanceof Error ? error.message : 'Could not load users.',
+      );
+    } finally {
+      this.loadingKnownUsers.set(false);
+    }
+  }
+
+  addKnownPeer(user: UserProfile): void {
+    this.session.rememberKnownPeer(user);
+    this.knownUsersNotice.set(`${user.displayName} was added to your chat peer list.`);
+    this.userSearch = user.displayName;
+  }
+
   async reloadAdminUsers(): Promise<void> {
     this.loadingAdminUsers.set(true);
     this.adminUsersError.set(null);
@@ -152,4 +203,12 @@ export class HomePageComponent {
   cycleTheme(): void {
     this.theme.cycleMode();
   }
+
+  setIncomingMessageSound(enabled: boolean): void {
+    this.session.setIncomingMessageSoundEnabled(enabled);
+  }
+
+  setDictationLanguage(language: string): void {
+    this.session.setDictationLanguage(language as DictationLanguage);
+  }
 }

client/src/app/models.ts

@@ -55,6 +55,8 @@ export interface AccessKeySummary {
   createdAt: string;
 }
 
+export type DeliveryState = 'pending' | 'sent';
+
 export interface RegistrationOptionsResponse {
   rp: PublicKeyCredentialRpEntity;
   user: {
@@ -97,6 +99,8 @@ export interface ChatEntry {
   kind: 'text' | 'json' | 'file' | 'voice' | 'system';
   createdAt: number;
   authorLabel: string;
+  deliveryState?: DeliveryState;
+  generatedByAi?: boolean;
   showSpinner?: boolean;
   text?: string;
   payload?: unknown;
@@ -104,8 +108,13 @@ export interface ChatEntry {
   fileSize?: number;
   fileMimeType?: string;
   downloadUrl?: string;
+  previewMimeType?: string;
+  previewDownloadUrl?: string;
 }
 
+export type CallMode = 'audio' | 'video';
+export type DictationLanguage = 'en' | 'fr' | 'es';
+
 export type SignalPayload =
   | { type: 'sdp'; description: RTCSessionDescriptionInit }
   | { type: 'ice-candidate'; candidate: RTCIceCandidateInit };
@@ -130,16 +139,6 @@ export type ServerEvent =
       peerId: string;
       message: string;
     }
-  | {
-      type: 'speech-transcribed';
-      requestId: string;
-      text: string;
-    }
-  | {
-      type: 'speech-transcription-error';
-      requestId: string;
-      message: string;
-    }
   | { type: 'pong' }
   | { type: 'error'; message: string };
 
@@ -179,12 +178,9 @@ export type DataEnvelope =
       type: 'typing';
       active: boolean;
     }
-  | {
-      type: 'camera-state';
-      active: boolean;
-    }
   | {
       type: 'voice-call-offer';
+      mode: CallMode;
     }
   | {
       type: 'voice-call-response';

client/src/app/peer-call-modal.component.scss

@@ -0,0 +1,155 @@
+:host {
+  display: contents;
+}
+
+.call-modal-backdrop {
+  position: fixed;
+  inset: 0;
+  z-index: 1250;
+  display: grid;
+  place-items: center;
+  padding: 1.5rem;
+  background:
+    radial-gradient(circle at top, rgba(78, 114, 255, 0.18), transparent 34%),
+    rgba(3, 8, 14, 0.82);
+  backdrop-filter: blur(16px);
+}
+
+.call-modal-card {
+  width: min(100%, 72rem);
+  border: 1px solid rgba(255, 255, 255, 0.08);
+  border-radius: 1.75rem;
+  background:
+    linear-gradient(180deg, rgba(9, 16, 28, 0.98), rgba(4, 8, 16, 0.96));
+  box-shadow: 0 28px 90px rgba(0, 0, 0, 0.48);
+}
+
+.call-modal-header,
+.call-modal-footer {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  padding: 1.25rem 1.25rem 0;
+}
+
+.call-modal-footer {
+  justify-content: flex-end;
+  padding: 1rem 1.25rem 1.25rem;
+}
+
+.call-modal-eyebrow {
+  margin-bottom: 0.35rem;
+  font-size: 0.78rem;
+  letter-spacing: 0.18em;
+  text-transform: uppercase;
+  color: rgba(255, 255, 255, 0.64);
+}
+
+.call-modal-close {
+  width: 2.75rem;
+  height: 2.75rem;
+  border: 0;
+  border-radius: 999px;
+  color: rgba(255, 255, 255, 0.92);
+  background: rgba(255, 255, 255, 0.08);
+  font-size: 1.5rem;
+  line-height: 1;
+}
+
+.call-modal-stage {
+  padding: 1.25rem;
+}
+
+.call-video-panel {
+  position: relative;
+  min-height: min(72vh, 42rem);
+  overflow: hidden;
+  border-radius: 1.35rem;
+  background:
+    linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
+}
+
+.call-video-panel-local {
+  position: absolute;
+  right: 1rem;
+  bottom: 1rem;
+  width: min(22vw, 12rem);
+  min-height: auto;
+  border: 1px solid rgba(255, 255, 255, 0.12);
+  border-radius: 1rem;
+  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.34);
+  backdrop-filter: blur(10px);
+  z-index: 1;
+}
+
+.call-video-label {
+  position: absolute;
+  top: 0.85rem;
+  left: 0.85rem;
+  z-index: 1;
+  padding: 0.35rem 0.7rem;
+  border-radius: 999px;
+  font-size: 0.82rem;
+  color: rgba(255, 255, 255, 0.88);
+  background: rgba(0, 0, 0, 0.34);
+  backdrop-filter: blur(8px);
+}
+
+.call-video-player,
+.call-video-placeholder {
+  width: 100%;
+  height: 100%;
+  display: grid;
+  place-items: center;
+  background:
+    radial-gradient(circle at top, rgba(140, 191, 255, 0.18), transparent 36%),
+    #03070f;
+  aspect-ratio: 16 / 10;
+}
+
+.call-video-player {
+  display: block;
+  object-fit: cover;
+}
+
+.call-video-player-local {
+  transform: scaleX(-1);
+}
+
+.call-video-placeholder {
+  padding: 1.25rem;
+  text-align: center;
+  color: rgba(255, 255, 255, 0.7);
+  font-size: 0.98rem;
+}
+
+.call-video-placeholder-local {
+  min-height: 8rem;
+  font-size: 0.82rem;
+}
+
+@media (max-width: 767.98px) {
+  .call-modal-backdrop {
+    padding: 0.9rem;
+  }
+
+  .call-modal-card {
+    border-radius: 1.4rem;
+  }
+
+  .call-video-panel {
+    min-height: 18rem;
+  }
+
+  .call-video-panel-local {
+    right: 0.75rem;
+    bottom: 0.75rem;
+    width: min(38vw, 8.5rem);
+  }
+
+  .call-modal-header,
+  .call-modal-footer {
+    padding-inline: 1rem;
+  }
+}

client/src/app/peer-call-modal.component.ts

@@ -0,0 +1,168 @@
+import { CommonModule } from '@angular/common';
+import {
+  AfterViewInit,
+  Component,
+  ElementRef,
+  EventEmitter,
+  Input,
+  OnChanges,
+  OnDestroy,
+  Output,
+  ViewChild,
+} from '@angular/core';
+import type { CallMode } from './models';
+
+@Component({
+  selector: 'app-peer-call-modal',
+  imports: [CommonModule],
+  template: `
+    @if (visible) {
+      <div class="call-modal-backdrop">
+        <section class="call-modal-card" (click)="$event.stopPropagation()">
+          <header class="call-modal-header">
+            <div>
+              <p class="call-modal-eyebrow">Private {{ callMode === 'audio' ? 'audio' : 'video' }} call</p>
+              <h2 class="h4 mb-1">{{ peerName }}</h2>
+              <p class="small mb-0">{{ statusText }}</p>
+            </div>
+            <button
+              class="call-modal-close"
+              type="button"
+              (click)="requestDismiss()"
+              [attr.aria-label]="callState === 'incoming' ? 'Decline call' : 'End call'"
+            >
+              ×
+            </button>
+          </header>
+
+          <div class="call-modal-stage">
+            <section class="call-video-panel call-video-panel-remote">
+              <div class="call-video-label">{{ callMode === 'audio' ? 'Peer audio' : 'Peer' }}</div>
+              @if (callMode === 'video' && remoteStream) {
+                <video #remoteVideoElement class="call-video-player" autoplay playsinline></video>
+              } @else {
+                <div class="call-video-placeholder">
+                  {{
+                    callMode === 'audio'
+                      ? 'Audio-only call in progress.'
+                      : callState === 'incoming'
+                        ? 'Waiting for you to join.'
+                        : 'Waiting for peer video…'
+                  }}
+                </div>
+              }
+
+              <section class="call-video-panel call-video-panel-local">
+                <div class="call-video-label">You</div>
+                @if (callMode === 'video' && localStream) {
+                  <video #localVideoElement class="call-video-player call-video-player-local" autoplay playsinline></video>
+                } @else {
+                  <div class="call-video-placeholder call-video-placeholder-local">
+                    {{ callMode === 'audio' ? 'Audio only' : callState === 'incoming' ? 'Camera starts when you accept.' : 'Starting your camera…' }}
+                  </div>
+                }
+              </section>
+            </section>
+          </div>
+
+          <footer class="call-modal-footer">
+            @if (callState === 'incoming') {
+              <button class="btn btn-success" type="button" (click)="acceptRequested.emit()">
+                Accept
+              </button>
+              <button class="btn btn-outline-light" type="button" (click)="rejectRequested.emit()">
+                Reject
+              </button>
+            } @else {
+              <button class="btn btn-danger" type="button" (click)="hangupRequested.emit()">
+                {{ callState === 'outgoing' ? 'Cancel call' : 'End call' }}
+              </button>
+            }
+          </footer>
+        </section>
+      </div>
+    }
+  `,
+  styleUrl: './peer-call-modal.component.scss',
+})
+export class PeerCallModalComponent implements AfterViewInit, OnChanges, OnDestroy {
+  @Input() visible = false;
+  @Input() peerName = 'Peer';
+  @Input() callState: 'incoming' | 'outgoing' | 'active' = 'active';
+  @Input() callMode: CallMode = 'video';
+  @Input() statusText = '';
+  @Input() localStream: MediaStream | null = null;
+  @Input() remoteStream: MediaStream | null = null;
+  @Output() readonly acceptRequested = new EventEmitter<void>();
+  @Output() readonly rejectRequested = new EventEmitter<void>();
+  @Output() readonly hangupRequested = new EventEmitter<void>();
+
+  @ViewChild('localVideoElement')
+  set localVideoElementRef(value: ElementRef<HTMLVideoElement> | undefined) {
+    this.localVideoElement = value;
+    this.syncVideoSources();
+  }
+
+  @ViewChild('remoteVideoElement')
+  set remoteVideoElementRef(value: ElementRef<HTMLVideoElement> | undefined) {
+    this.remoteVideoElement = value;
+    this.syncVideoSources();
+  }
+
+  private localVideoElement?: ElementRef<HTMLVideoElement>;
+  private remoteVideoElement?: ElementRef<HTMLVideoElement>;
+
+  ngAfterViewInit(): void {
+    this.syncVideoSources();
+  }
+
+  ngOnChanges(): void {
+    this.syncVideoSources();
+  }
+
+  ngOnDestroy(): void {
+    this.detachVideo(this.localVideoElement?.nativeElement);
+    this.detachVideo(this.remoteVideoElement?.nativeElement);
+  }
+
+  requestDismiss(): void {
+    if (this.callState === 'incoming') {
+      this.rejectRequested.emit();
+      return;
+    }
+
+    this.hangupRequested.emit();
+  }
+
+  private syncVideoSources(): void {
+    this.syncVideo(this.localVideoElement?.nativeElement, this.visible ? this.localStream : null, true);
+    this.syncVideo(this.remoteVideoElement?.nativeElement, this.visible ? this.remoteStream : null, true);
+  }
+
+  private syncVideo(video: HTMLVideoElement | undefined, stream: MediaStream | null, muted: boolean): void {
+    if (!video) {
+      return;
+    }
+
+    video.muted = muted;
+    video.srcObject = stream;
+
+    if (stream) {
+      void video.play().catch(() => {
+        // Autoplay can be delayed until the next user gesture on some platforms.
+      });
+      return;
+    }
+
+    video.pause();
+  }
+
+  private detachVideo(video: HTMLVideoElement | undefined): void {
+    if (!video) {
+      return;
+    }
+
+    video.pause();
+    video.srcObject = null;
+  }
+}

client/src/app/peer-video-modal.component.scss

@@ -1,54 +0,0 @@
-:host {
-  display: contents;
-}
-
-.video-modal-backdrop {
-  position: fixed;
-  inset: 0;
-  z-index: 1200;
-  display: grid;
-  place-items: center;
-  padding: 1.5rem;
-  background: rgba(3, 8, 14, 0.72);
-  backdrop-filter: blur(10px);
-}
-
-.video-modal-card {
-  width: min(100%, 56rem);
-  border: 1px solid var(--surface-border);
-  border-radius: 1.5rem;
-  background: var(--panel-background);
-  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
-}
-
-.video-modal-header {
-  display: flex;
-  justify-content: space-between;
-  gap: 1rem;
-  align-items: start;
-  padding: 1rem 1rem 0;
-}
-
-.video-modal-close {
-  width: 2.5rem;
-  height: 2.5rem;
-  border: 0;
-  border-radius: 999px;
-  color: var(--page-text);
-  background: var(--badge-background);
-  font-size: 1.35rem;
-  line-height: 1;
-}
-
-.video-modal-body {
-  padding: 1rem;
-}
-
-.video-modal-player {
-  width: 100%;
-  display: block;
-  border-radius: 1rem;
-  background: #000;
-  aspect-ratio: 16 / 9;
-  object-fit: cover;
-}

client/src/app/peer-video-modal.component.ts

@@ -1,86 +0,0 @@
-import { CommonModule } from '@angular/common';
-import { AfterViewInit, Component, ElementRef, EventEmitter, Input, OnChanges, OnDestroy, Output, ViewChild } from '@angular/core';
-
-@Component({
-  selector: 'app-peer-video-modal',
-  imports: [CommonModule],
-  template: `
-    @if (visible) {
-      <div class="video-modal-backdrop" (click)="requestClose()">
-        <section class="video-modal-card" (click)="$event.stopPropagation()">
-          <div class="video-modal-header">
-            <div>
-              <h2 class="h5 mb-1">{{ title }}</h2>
-              <p class="small mb-0">Live webcam capture from your peer.</p>
-            </div>
-            <button class="video-modal-close" type="button" (click)="requestClose()" aria-label="Close live video">
-              ×
-            </button>
-          </div>
-
-          <div class="video-modal-body">
-            <video #videoElement class="video-modal-player" autoplay playsinline></video>
-          </div>
-        </section>
-      </div>
-    }
-  `,
-  styleUrl: './peer-video-modal.component.scss',
-})
-export class PeerVideoModalComponent implements AfterViewInit, OnChanges, OnDestroy {
-  @Input() visible = false;
-  @Input() stream: MediaStream | null = null;
-  @Input() title = 'Live webcam';
-  @Output() readonly closeRequested = new EventEmitter<void>();
-  @ViewChild('videoElement')
-  set videoElementRef(value: ElementRef<HTMLVideoElement> | undefined) {
-    this.videoElement = value;
-    this.syncVideoSource();
-  }
-
-  private videoElement?: ElementRef<HTMLVideoElement>;
-
-  ngAfterViewInit(): void {
-    this.syncVideoSource();
-  }
-
-  ngOnChanges(): void {
-    this.syncVideoSource();
-  }
-
-  ngOnDestroy(): void {
-    this.detachVideoSource();
-  }
-
-  requestClose(): void {
-    this.closeRequested.emit();
-  }
-
-  private syncVideoSource(): void {
-    const video = this.videoElement?.nativeElement;
-
-    if (!video) {
-      return;
-    }
-
-    video.muted = true;
-    video.srcObject = this.visible ? this.stream : null;
-
-    if (this.visible && this.stream) {
-      void video.play().catch(() => {
-        // Autoplay may be delayed until user interaction depending on platform policy.
-      });
-    }
-  }
-
-  private detachVideoSource(): void {
-    const video = this.videoElement?.nativeElement;
-
-    if (!video) {
-      return;
-    }
-
-    video.pause();
-    video.srcObject = null;
-  }
-}

client/src/index.html

@@ -5,7 +5,7 @@
   <title>PrivateChat</title>
   <base href="/">
   <meta name="viewport" content="width=device-width, initial-scale=1">
-  <meta name="theme-color" content="#08111d">
+  <meta name="theme-color" content="#030712">
   <meta name="mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-capable" content="yes">
   <meta name="apple-mobile-web-app-status-bar-style" content="black-translucent">
@@ -14,7 +14,7 @@
   <link rel="apple-touch-icon" href="apple-touch-icon.png">
   <link rel="preconnect" href="https://fonts.googleapis.com">
   <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
-  <link href="https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&display=swap" rel="stylesheet">
+  <link href="https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap" rel="stylesheet">
   <link rel="icon" type="image/x-icon" href="favicon.ico">
   <script src="env.js"></script>
 </head>

client/src/styles.scss

@@ -1,108 +1,104 @@
 @use 'bootstrap/scss/bootstrap';
 
+/* ── Design Tokens ───────────────────────────────────────────────────────── */
 :root {
-  --page-text: #142236;
-  --page-text-muted: rgba(39, 63, 91, 0.72);
-  --page-text-soft: rgba(39, 63, 91, 0.82);
-  --page-background:
-    radial-gradient(circle at top left, rgba(81, 168, 255, 0.2), transparent 30%),
-    radial-gradient(circle at top right, rgba(129, 244, 215, 0.22), transparent 24%),
-    linear-gradient(180deg, #f6fbff 0%, #e8f1fb 100%);
-  --panel-background: rgba(255, 255, 255, 0.82);
-  --panel-alt-background: rgba(241, 247, 255, 0.9);
-  --panel-soft-background: rgba(20, 34, 54, 0.04);
-  --surface-background: rgba(255, 255, 255, 0.82);
-  --surface-hover-background: rgba(235, 244, 255, 0.98);
-  --surface-border: rgba(33, 62, 94, 0.12);
-  --surface-border-soft: rgba(33, 62, 94, 0.08);
-  --input-background: rgba(255, 255, 255, 0.92);
-  --input-border: rgba(77, 114, 154, 0.26);
-  --placeholder-color: rgba(55, 83, 118, 0.52);
-  --accent-color: #138a7b;
-  --accent-color-soft: rgba(19, 138, 123, 0.1);
-  --accent-gradient: linear-gradient(135deg, #8df0df, #6cb6ff);
-  --accent-gradient-hover: linear-gradient(135deg, #a6f5e8, #86c4ff);
-  --link-color: #2f7cd6;
-  --badge-background: rgba(20, 34, 54, 0.08);
-  --incoming-bubble-background: #d9ebff;
-  --incoming-bubble-text: #183759;
-  --outgoing-bubble-background: #d9f5df;
-  --outgoing-bubble-text: #1e4d2f;
-  --danger-background: #d94b53;
-  --shadow-color: rgba(41, 73, 110, 0.14);
-  color-scheme: light;
-}
+  /* Text */
+  --page-text:             #e2e8f4;
+  --page-text-muted:       rgba(180, 196, 224, 0.68);
+  --page-text-soft:        rgba(180, 196, 224, 0.82);
 
-@media (prefers-color-scheme: dark) {
-  :root:not([data-theme]) {
-    --page-text: #eff3ff;
-    --page-text-muted: rgba(231, 238, 249, 0.72);
-    --page-text-soft: rgba(231, 238, 249, 0.84);
-    --page-background:
-      radial-gradient(circle at top left, rgba(129, 244, 215, 0.18), transparent 28%),
-      radial-gradient(circle at top right, rgba(85, 168, 255, 0.18), transparent 24%),
-      linear-gradient(180deg, #08111d 0%, #101d31 100%);
-    --panel-background: rgba(9, 16, 28, 0.78);
-    --panel-alt-background: rgba(15, 27, 44, 0.78);
-    --panel-soft-background: rgba(255, 255, 255, 0.04);
-    --surface-background: rgba(8, 14, 23, 0.7);
-    --surface-hover-background: rgba(16, 30, 49, 0.92);
-    --surface-border: rgba(255, 255, 255, 0.12);
-    --surface-border-soft: rgba(255, 255, 255, 0.08);
-    --input-background: rgba(255, 255, 255, 0.06);
-    --input-border: rgba(255, 255, 255, 0.16);
-    --placeholder-color: rgba(239, 243, 255, 0.5);
-    --accent-color: #81f4d7;
-    --accent-color-soft: rgba(129, 244, 215, 0.1);
-    --accent-gradient: linear-gradient(135deg, #81f4d7, #55a8ff);
-    --accent-gradient-hover: linear-gradient(135deg, #9bf7e0, #7abaff);
-    --link-color: #9bd5ff;
-    --badge-background: rgba(255, 255, 255, 0.08);
-    --incoming-bubble-background: #dcefff;
-    --incoming-bubble-text: #0f2540;
-    --outgoing-bubble-background: #def7dd;
-    --outgoing-bubble-text: #153420;
-    --danger-background: #d94b53;
-    --shadow-color: rgba(0, 0, 0, 0.28);
-    color-scheme: dark;
-  }
-}
-
-:root[data-theme='dark'] {
-  --page-text: #eff3ff;
-  --page-text-muted: rgba(231, 238, 249, 0.72);
-  --page-text-soft: rgba(231, 238, 249, 0.84);
+  /* Page background: deep obsidian with teal/blue aurora */
   --page-background:
-    radial-gradient(circle at top left, rgba(129, 244, 215, 0.18), transparent 28%),
-    radial-gradient(circle at top right, rgba(85, 168, 255, 0.18), transparent 24%),
-    linear-gradient(180deg, #08111d 0%, #101d31 100%);
-  --panel-background: rgba(9, 16, 28, 0.78);
-  --panel-alt-background: rgba(15, 27, 44, 0.78);
-  --panel-soft-background: rgba(255, 255, 255, 0.04);
-  --surface-background: rgba(8, 14, 23, 0.7);
-  --surface-hover-background: rgba(16, 30, 49, 0.92);
-  --surface-border: rgba(255, 255, 255, 0.12);
-  --surface-border-soft: rgba(255, 255, 255, 0.08);
-  --input-background: rgba(255, 255, 255, 0.06);
-  --input-border: rgba(255, 255, 255, 0.16);
-  --placeholder-color: rgba(239, 243, 255, 0.5);
-  --accent-color: #81f4d7;
-  --accent-color-soft: rgba(129, 244, 215, 0.1);
-  --accent-gradient: linear-gradient(135deg, #81f4d7, #55a8ff);
-  --accent-gradient-hover: linear-gradient(135deg, #9bf7e0, #7abaff);
-  --link-color: #9bd5ff;
-  --badge-background: rgba(255, 255, 255, 0.08);
-  --incoming-bubble-background: #dcefff;
-  --incoming-bubble-text: #0f2540;
-  --outgoing-bubble-background: #def7dd;
-  --outgoing-bubble-text: #153420;
-  --danger-background: #d94b53;
-  --shadow-color: rgba(0, 0, 0, 0.28);
+    radial-gradient(circle at 12% 8%,  rgba(13, 148, 136, 0.22), transparent 28%),
+    radial-gradient(circle at 90% 5%,  rgba(59, 130, 246, 0.18), transparent 24%),
+    radial-gradient(circle at 50% 95%, rgba(99, 102, 241, 0.12), transparent 30%),
+    linear-gradient(180deg, #030712 0%, #080f1e 100%);
+
+  /* Panels */
+  --panel-background:       rgba(11, 17, 32, 0.72);
+  --panel-alt-background:   rgba(15, 23, 42, 0.78);
+  --panel-soft-background:  rgba(255, 255, 255, 0.04);
+
+  /* Surfaces */
+  --surface-background:     rgba(8, 14, 24, 0.65);
+  --surface-hover-background: rgba(17, 28, 50, 0.92);
+  --surface-border:         rgba(255, 255, 255, 0.08);
+  --surface-border-soft:    rgba(255, 255, 255, 0.05);
+
+  /* Inputs */
+  --input-background:       rgba(0, 0, 0, 0.35);
+  --input-border:           rgba(255, 255, 255, 0.12);
+  --placeholder-color:      rgba(148, 168, 210, 0.45);
+
+  /* Accent — teal-to-blue gradient */
+  --accent-color:           #2dd4bf;
+  --accent-color-soft:      rgba(45, 212, 191, 0.12);
+  --accent-gradient:        linear-gradient(135deg, #0d9488, #3b82f6);
+  --accent-gradient-hover:  linear-gradient(135deg, #14b8a6, #60a5fa);
+
+  /* Link */
+  --link-color:             #60a5fa;
+
+  /* Badges / Pills */
+  --badge-background:       rgba(255, 255, 255, 0.07);
+
+  /* Chat bubbles */
+  --incoming-bubble-background: rgba(30, 58, 138, 0.22);
+  --incoming-bubble-border:     rgba(59, 130, 246, 0.28);
+  --incoming-bubble-text:       #dbeafe;
+  --outgoing-bubble-background: rgba(6, 78, 59, 0.25);
+  --outgoing-bubble-border:     rgba(45, 212, 191, 0.30);
+  --outgoing-bubble-text:       #d1fae5;
+
+  /* Status LEDs */
+  --led-ok:         #10b981;
+  --led-connecting: #f59e0b;
+  --led-offline:    #ef4444;
+
+  /* Shadow */
+  --shadow-color:   rgba(0, 0, 0, 0.55);
+
+  /* Typography */
+  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
+
   color-scheme: dark;
 }
 
-html,
-body {
+/* Light theme override */
+:root[data-theme='light'] {
+  --page-text:             #0f172a;
+  --page-text-muted:       rgba(30, 50, 80, 0.66);
+  --page-text-soft:        rgba(30, 50, 80, 0.82);
+  --page-background:
+    radial-gradient(circle at 12% 8%,  rgba(13, 148, 136, 0.15), transparent 28%),
+    radial-gradient(circle at 90% 5%,  rgba(59, 130, 246, 0.12), transparent 24%),
+    linear-gradient(180deg, #f0fafa 0%, #e8f1fb 100%);
+  --panel-background:       rgba(255, 255, 255, 0.82);
+  --panel-alt-background:   rgba(241, 248, 255, 0.88);
+  --panel-soft-background:  rgba(15, 23, 42, 0.04);
+  --surface-background:     rgba(255, 255, 255, 0.75);
+  --surface-hover-background: rgba(236, 248, 255, 0.98);
+  --surface-border:         rgba(30, 60, 100, 0.12);
+  --surface-border-soft:    rgba(30, 60, 100, 0.07);
+  --input-background:       rgba(255, 255, 255, 0.9);
+  --input-border:           rgba(100, 130, 180, 0.28);
+  --placeholder-color:      rgba(60, 90, 130, 0.48);
+  --accent-color:           #0d9488;
+  --accent-color-soft:      rgba(13, 148, 136, 0.1);
+  --incoming-bubble-background: #dbeafe;
+  --incoming-bubble-border:     rgba(59, 130, 246, 0.28);
+  --incoming-bubble-text:       #1e3a5f;
+  --outgoing-bubble-background: #d1fae5;
+  --outgoing-bubble-border:     rgba(13, 148, 136, 0.28);
+  --outgoing-bubble-text:       #064e3b;
+  --shadow-color:           rgba(30, 60, 100, 0.14);
+  color-scheme: light;
+}
+
+/* ── Base ────────────────────────────────────────────────────────────────── */
+@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');
+
+html, body {
   min-height: 100dvh;
 }
 
@@ -113,18 +109,28 @@ body {
   background: var(--page-background);
   background-attachment: fixed;
   transition:
-    background 180ms ease,
-    color 180ms ease,
-    border-color 180ms ease,
-    box-shadow 180ms ease;
+    background 220ms ease,
+    color 220ms ease,
+    border-color 220ms ease,
+    box-shadow 220ms ease;
 }
 
-button,
-input,
-textarea {
+button, input, textarea, select {
   font: inherit;
 }
 
+/* Scrollbar */
+::-webkit-scrollbar { width: 5px; height: 5px; }
+::-webkit-scrollbar-track { background: transparent; }
+::-webkit-scrollbar-thumb {
+  background: rgba(255, 255, 255, 0.1);
+  border-radius: 10px;
+}
+::-webkit-scrollbar-thumb:hover {
+  background: rgba(45, 212, 191, 0.35);
+}
+
+/* ── Bootstrap overrides ────────────────────────────────────────────────── */
 .text-secondary {
   color: var(--page-text-muted) !important;
 }
@@ -176,3 +182,455 @@ textarea {
 .alert-warning {
   border: 1px solid var(--surface-border);
 }
+
+/* ── Modals (shared across pages) ───────────────────────────────────────── */
+.call-choice-backdrop {
+  position: fixed;
+  inset: 0;
+  z-index: 1240;
+  display: grid;
+  place-items: center;
+  padding: 1rem;
+  background: rgba(0, 0, 0, 0.6);
+  backdrop-filter: blur(10px);
+}
+
+.call-choice-card {
+  width: min(100%, 25rem);
+}
+
+.conversation-modal-backdrop {
+  position: fixed;
+  inset: 0;
+  z-index: 1230;
+  display: grid;
+  place-items: center;
+  padding: 0.75rem;
+  background: rgba(0, 0, 0, 0.65);
+  backdrop-filter: blur(12px);
+}
+
+.conversation-modal {
+  display: grid;
+  grid-template-rows: auto minmax(0, 1fr);
+  width: min(100%, 96rem);
+  height: min(100dvh - 1.5rem, 100%);
+  max-height: 100dvh;
+  border: 0;
+}
+
+.conversation-modal-header {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 1rem;
+  padding-bottom: 1rem;
+}
+
+.conversation-modal-eyebrow,
+.call-choice-eyebrow,
+.bubble-delivery-state {
+  text-transform: uppercase;
+}
+
+.conversation-modal-eyebrow {
+  font-size: 0.72rem;
+  letter-spacing: 0.16em;
+  color: var(--accent-color);
+  font-family: var(--font-mono);
+}
+
+.conversation-modal-close {
+  width: 2.5rem;
+  height: 2.5rem;
+  padding: 0;
+  border: 0;
+  border-radius: 999px;
+  color: var(--page-text);
+  background: var(--badge-background);
+  font-size: 1.35rem;
+  line-height: 1;
+  transition: background 160ms ease;
+}
+
+.conversation-modal-close:hover {
+  background: rgba(255, 255, 255, 0.12);
+}
+
+.conversation-modal-body {
+  min-height: 0;
+  max-height: none;
+  padding-top: 1rem;
+}
+
+.call-choice-eyebrow {
+  margin-bottom: 0.45rem;
+  font-size: 0.72rem;
+  letter-spacing: 0.18em;
+  color: var(--accent-color);
+  font-family: var(--font-mono);
+}
+
+.call-choice-actions {
+  display: grid;
+  gap: 0.85rem;
+}
+
+.call-choice-button {
+  display: flex;
+  align-items: center;
+  gap: 0.85rem;
+  width: 100%;
+  padding: 1rem 1.1rem;
+  border: 1px solid var(--surface-border);
+  border-radius: 1rem;
+  color: var(--page-text);
+  background: var(--surface-background);
+  text-align: left;
+  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
+}
+
+.call-choice-button:hover,
+.call-choice-button:focus-visible {
+  border-color: color-mix(in srgb, var(--accent-color) 40%, transparent);
+  background: var(--surface-hover-background);
+  transform: translateY(-1px);
+}
+
+.call-choice-icon {
+  display: inline-grid;
+  place-items: center;
+  width: 2.5rem;
+  height: 2.5rem;
+  border-radius: 999px;
+  background: var(--badge-background);
+  font-size: 1.2rem;
+  border: 1px solid var(--surface-border);
+}
+
+.status-indicator-action {
+  padding: 0;
+  border: 0;
+  background: transparent;
+}
+
+.status-indicator-action:not(:disabled) {
+  color: var(--page-text);
+  cursor: pointer;
+}
+
+.status-indicator-action:not(:disabled):hover,
+.status-indicator-action:not(:disabled):focus-visible {
+  color: var(--accent-color);
+}
+
+.status-indicator-action:disabled {
+  cursor: default;
+  opacity: 1;
+}
+
+/* ── Status LEDs ─────────────────────────────────────────────────────────── */
+.status-led,
+.peer-tile-delete,
+.bubble-spinner {
+  border-radius: 999px;
+}
+
+.status-led {
+  width: 0.55rem;
+  height: 0.55rem;
+  flex-shrink: 0;
+  box-shadow: 0 0 6px currentColor;
+}
+
+.status-led-ok {
+  color: var(--led-ok);
+  background: var(--led-ok);
+}
+
+.status-led-connecting {
+  color: var(--led-connecting);
+  background: var(--led-connecting);
+}
+
+.status-led-offline {
+  color: var(--led-offline);
+  background: var(--led-offline);
+}
+
+/* ── Peer dropdown ───────────────────────────────────────────────────────── */
+.peer-dropdown {
+  position: relative;
+  min-width: min(18rem, 42vw);
+}
+
+.peer-dropdown-trigger {
+  width: 100%;
+  padding-top: 0.52rem;
+  padding-bottom: 0.52rem;
+}
+
+.peer-dropdown-menu {
+  position: absolute;
+  top: calc(100% + 0.65rem);
+  left: 0;
+  z-index: 4;
+  display: grid;
+  gap: 0.65rem;
+  width: 100%;
+  max-height: calc(3 * 4.55rem + 1.5rem);
+  overflow: auto;
+  padding: 0.75rem;
+  border: 1px solid var(--surface-border);
+  border-radius: 1.2rem;
+  background: var(--panel-background);
+  backdrop-filter: blur(20px);
+  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.06);
+}
+
+.peer-tile {
+  display: grid;
+  grid-template-columns: minmax(0, 1fr) auto;
+  gap: 0.75rem;
+  align-items: center;
+  width: 100%;
+  padding: 0.75rem 0.85rem 0.75rem 1rem;
+  border: 1px solid var(--surface-border);
+  border-radius: 1rem;
+  color: inherit;
+  background: var(--surface-background);
+  font-size: 1em;
+  transition: transform 160ms ease, border-color 160ms ease, background 160ms ease;
+}
+
+.peer-tile-main {
+  display: block;
+  min-width: 0;
+  padding: 0;
+  border: 0;
+  color: inherit;
+  background: transparent;
+}
+
+.peer-tile-indicators,
+.bubble-system-status {
+  display: inline-flex;
+  align-items: center;
+}
+
+.peer-tile-indicators {
+  gap: 0.38rem;
+  flex: 0 0 auto;
+}
+
+.peer-dropdown-caret {
+  font-size: 1.1rem;
+  line-height: 1;
+  transition: transform 160ms ease;
+  opacity: 0.6;
+}
+
+.peer-dropdown-caret-open {
+  transform: rotate(180deg);
+}
+
+.peer-tile-delete {
+  width: 1.5rem;
+  height: 1.5rem;
+  padding: 0;
+  border: 0;
+  background: transparent;
+  font-size: 0.7rem;
+  line-height: 1;
+  opacity: 0.5;
+  transition: opacity 160ms ease, background 160ms ease;
+}
+
+.peer-tile-delete:hover,
+.peer-tile-delete:focus-visible {
+  opacity: 1;
+  background: rgba(239, 68, 68, 0.15);
+}
+
+.peer-tile:hover,
+.peer-tile:focus-visible,
+.peer-tile-active {
+  transform: translateY(-1px);
+  border-color: color-mix(in srgb, var(--accent-color) 38%, transparent);
+  background: var(--surface-hover-background);
+}
+
+.peer-tile-unread {
+  border-color: #ef4444;
+  box-shadow: inset 0 0 0 1px rgba(239, 68, 68, 0.4), 0 0 12px rgba(239, 68, 68, 0.15);
+}
+
+.peer-tile-row {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 0.53rem;
+}
+
+.peer-tile-title {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.32rem;
+  min-width: 0;
+}
+
+/* Typing indicator */
+.peer-typing-dots {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.2rem;
+  min-height: 0.9rem;
+}
+
+.peer-typing-dots span {
+  width: 0.27rem;
+  height: 0.27rem;
+  border-radius: 999px;
+  background: var(--accent-color);
+  opacity: 0.35;
+  animation: peer-typing-pulse 900ms infinite ease-in-out;
+}
+
+.peer-typing-dots span:nth-child(2) { animation-delay: 120ms; }
+.peer-typing-dots span:nth-child(3) { animation-delay: 240ms; }
+
+.peer-tile-status {
+  flex: 0 0 auto;
+}
+
+/* ── Chat Bubbles ────────────────────────────────────────────────────────── */
+.bubble-incoming {
+  justify-self: start;
+  color: var(--incoming-bubble-text);
+  background: var(--incoming-bubble-background);
+  border: 1px solid var(--incoming-bubble-border);
+  border-radius: 1.25rem 1.25rem 1.25rem 0.35rem;
+}
+
+.bubble-outgoing {
+  justify-self: end;
+  color: var(--outgoing-bubble-text);
+  background: var(--outgoing-bubble-background);
+  border: 1px solid var(--outgoing-bubble-border);
+  border-radius: 1.25rem 1.25rem 0.35rem 1.25rem;
+}
+
+.bubble-pending {
+  opacity: 0.52;
+  filter: grayscale(0.32);
+}
+
+.bubble-system {
+  justify-self: center;
+  max-width: 90%;
+  color: var(--page-text-soft);
+  background: rgba(255, 255, 255, 0.04);
+  border: 1px solid var(--surface-border-soft);
+  font-family: var(--font-mono);
+  font-size: 0.75rem;
+}
+
+.bubble-emoji-only {
+  max-width: none;
+  padding: 0;
+  border: none;
+  border-radius: 0;
+  background: transparent;
+  box-shadow: none;
+}
+
+.bubble-meta {
+  display: flex;
+  align-items: baseline;
+  gap: 0.45rem;
+  margin-bottom: 0.3rem;
+  font-size: 0.72rem;
+  opacity: 0.65;
+  font-family: var(--font-mono);
+}
+
+.bubble-time { display: block; }
+
+.bubble-delivery-state {
+  display: inline-block;
+  margin-top: 0.1rem;
+  font-size: 0.68rem;
+  letter-spacing: 0.06em;
+  color: var(--accent-color);
+}
+
+.bubble-system-status {
+  gap: 0.7rem;
+}
+
+.bubble-spinner {
+  width: 1rem;
+  height: 1rem;
+  flex: 0 0 auto;
+  border: 0.15rem solid currentColor;
+  border-right-color: transparent;
+  opacity: 0.8;
+  animation: bubble-spin 700ms linear infinite;
+}
+
+/* ── Keyframes ───────────────────────────────────────────────────────────── */
+@keyframes peer-typing-pulse {
+  0%, 80%, 100% { opacity: 0.35; transform: translateY(0); }
+  40% { opacity: 1; transform: translateY(-2px); }
+}
+
+@keyframes bubble-spin {
+  to { transform: rotate(360deg); }
+}
+
+@keyframes glow-pulse {
+  0%, 100% { opacity: 0.5; box-shadow: 0 0 6px currentColor; }
+  50% { opacity: 1; box-shadow: 0 0 14px currentColor; }
+}
+
+.status-led-ok { animation: glow-pulse 3s ease-in-out infinite; }
+
+/* ── Global accent button (used across pages) ───────────────────────────── */
+.btn-accent,
+.btn-accent:hover,
+.btn-accent:focus-visible {
+  color: #fff;
+  border: 0;
+  font-weight: 600;
+  letter-spacing: 0.02em;
+}
+
+.btn-accent {
+  background: var(--accent-gradient);
+  box-shadow: 0 4px 20px rgba(13, 148, 136, 0.3);
+  transition: opacity 160ms ease, transform 160ms ease, box-shadow 160ms ease;
+}
+
+.btn-accent:hover,
+.btn-accent:focus-visible {
+  background: var(--accent-gradient-hover);
+  transform: translateY(-1px);
+  box-shadow: 0 8px 28px rgba(13, 148, 136, 0.4);
+}
+
+.btn-accent:active {
+  transform: scale(0.97);
+}
+
+/* ── Mobile ──────────────────────────────────────────────────────────────── */
+@media (max-width: 767.98px) {
+  .peer-dropdown { min-width: min(100%, 18rem); }
+
+  .conversation-modal-backdrop { padding: 0; }
+
+  .conversation-modal {
+    width: 100vw;
+    height: 100dvh;
+    border-radius: 0;
+  }
+}

package.json

@@ -7,9 +7,11 @@
     "dev:server": "npm run dev --prefix server",
     "dev:client": "npm run start --prefix client",
     "build": "npm run build --prefix server && npm run build --prefix client",
-    "start": "npm run build && npm run start --prefix server"
+    "start": "npm run build && npm run start --prefix server",
+    "restart": "npm run build && sudo systemctl restart privatechat.service"
   },
   "devDependencies": {
-    "concurrently": "^9.2.1"
+    "concurrently": "^9.2.1",
+    "puppeteer": "^24.41.0"
   }
 }

server/dist/index.js

@@ -1,19 +1,21 @@
 import crypto from 'node:crypto';
+import { execFile } from 'node:child_process';
 import fs from 'node:fs';
+import os from 'node:os';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { TextEncoder } from 'node:util';
+import { promisify, TextEncoder } from 'node:util';
 import { DatabaseSync } from 'node:sqlite';
 import cors from '@fastify/cors';
 import jwt from '@fastify/jwt';
 import fastifyStatic from '@fastify/static';
 import websocket from '@fastify/websocket';
 import dotenv from 'dotenv';
+import libreOffice from 'libreoffice-convert';
 import { generateAuthenticationOptions, generateRegistrationOptions, verifyAuthenticationResponse, verifyRegistrationResponse, } from '@simplewebauthn/server';
 import Fastify from 'fastify';
 import { Redis } from 'ioredis';
 import { z } from 'zod';
-import { SpeechTranscriber } from './speech-transcriber.js';
 dotenv.config({ path: fileURLToPath(new URL('../../.env', import.meta.url)) });
 const projectRootPath = fileURLToPath(new URL('../../', import.meta.url));
 const registerSchema = z.object({
@@ -47,6 +49,11 @@ const adminDeleteUserParamsSchema = z.object({
 const webBundleFileParamsSchema = z.object({
     '*': z.string().min(1),
 });
+const documentPreviewSchema = z.object({
+    fileName: z.string().trim().min(1).max(256),
+    mimeType: z.string().trim().min(1).max(256),
+    fileBase64: z.string().min(1).max(96_000_000),
+});
 const wsQuerySchema = z.object({
     token: z.string().min(1),
 });
@@ -82,12 +89,6 @@ const signalMessageSchema = z.discriminatedUnion('type', [
     z.object({
         type: z.literal('ping'),
     }),
-    z.object({
-        type: z.literal('speech-transcription'),
-        requestId: z.string().uuid(),
-        mimeType: z.string().trim().min(1).max(128),
-        audioBase64: z.string().min(1).max(32_000_000),
-    }),
 ]);
 const app = Fastify({ logger: true, trustProxy: true });
 const approvalAdminUsername = 'ladparis';
@@ -98,9 +99,6 @@ const frontendDistPath = resolveProjectPath(process.env.PRIVATECHAT_WEB_DIST_DIR
 const ollamaServerUrl = (process.env.PRIVATECHAT_OLLAMA_URL ?? 'http://192.168.1.19:11434').replace(/\/+$/, '');
 const ollamaImageModel = process.env.PRIVATECHAT_OLLAMA_IMAGE_MODEL ?? 'x/z-image-turbo:latest';
 const ollamaImageSize = process.env.PRIVATECHAT_OLLAMA_IMAGE_SIZE ?? '1024x1024';
-const speechTranscriptionServiceUrl = process.env.PRIVATECHAT_TRANSCRIPTION_WS_URL ?? 'ws://192.168.1.19:8080';
-const speechTranscriptionLanguage = process.env.PRIVATECHAT_TRANSCRIPTION_LANGUAGE ?? 'auto';
-const speechTranscriptionTimeoutMs = Number(process.env.PRIVATECHAT_TRANSCRIPTION_TIMEOUT_MS ?? 120_000);
 const sessionTtlSeconds = Number(process.env.SESSION_TTL_SECONDS ?? 60 * 60 * 12);
 const webAuthnChallengeTtlSeconds = Number(process.env.WEBAUTHN_CHALLENGE_TTL_SECONDS ?? 5 * 60);
 const allowedCorsOrigins = parseAllowedOrigins(process.env.CORS_ORIGIN);
@@ -111,11 +109,8 @@ const webAuthnRpName = process.env.WEBAUTHN_RP_NAME ?? 'PrivateChat';
 const webAuthnUserVerification = resolveWebAuthnUserVerification(process.env.WEBAUTHN_USER_VERIFICATION);
 const frontendIndexPath = path.join(frontendDistPath, 'index.html');
 const hasFrontendBuild = fs.existsSync(frontendIndexPath);
-const speechTranscriber = new SpeechTranscriber({
-    serviceUrl: speechTranscriptionServiceUrl,
-    language: speechTranscriptionLanguage,
-    requestTimeoutMs: speechTranscriptionTimeoutMs,
-}, app.log);
+const convertOfficeDocument = promisify(libreOffice.convertWithOptions);
+const execFileAsync = promisify(execFile);
 fs.mkdirSync(path.dirname(sqlitePath), { recursive: true });
 fs.mkdirSync(path.dirname(masterKeyPath), { recursive: true });
 const encryptionKey = deriveEncryptionKey(loadOrCreateMasterKey(masterKeyPath));
@@ -462,6 +457,44 @@ app.get('/api/auth/session', async (request, reply) => {
         messageEncryptionKey: authContext.user.messageEncryptionKey,
     };
 });
+app.get('/api/users', async (request, reply) => {
+    const authContext = await authenticateRequest(request, reply);
+    if (!authContext) {
+        return;
+    }
+    return {
+        users: listDiscoverableUsers(authContext.user.id),
+    };
+});
+app.post('/api/files/document-preview-image', { bodyLimit: 64 * 1024 * 1024 }, async (request, reply) => {
+    const authContext = await authenticateRequest(request, reply);
+    if (!authContext) {
+        return;
+    }
+    const parsed = documentPreviewSchema.safeParse(request.body);
+    if (!parsed.success) {
+        return reply.code(400).send({
+            message: 'Invalid document preview payload.',
+            issues: parsed.error.flatten(),
+        });
+    }
+    if (!isSupportedPreviewDocument(parsed.data.fileName, parsed.data.mimeType)) {
+        return reply.code(400).send({ message: 'Only PDF, DOCX, XLSX, and PPTX files can be previewed.' });
+    }
+    try {
+        const previewImageBuffer = await createDocumentPreviewImage(parsed.data.fileName, parsed.data.mimeType, parsed.data.fileBase64);
+        return {
+            mimeType: 'image/png',
+            imageBase64: previewImageBuffer.toString('base64'),
+        };
+    }
+    catch (error) {
+        app.log.warn({ err: error, userId: authContext.user.id }, 'Document preview generation failed');
+        return reply.code(422).send({
+            message: describeDocumentPreviewFailure(error),
+        });
+    }
+});
 app.get('/api/admin/pending-users', async (request, reply) => {
     const authContext = await authenticateRequest(request, reply);
     if (!authContext) {
@@ -734,25 +767,6 @@ async function handleSocketMessage(userId, sessionId, socket, rawMessage) {
         }
         return;
     }
-    if (parsed.type === 'speech-transcription') {
-        try {
-            const text = await transcribeAudioPayload(parsed.requestId, parsed.audioBase64, parsed.mimeType);
-            send(socket, {
-                type: 'speech-transcribed',
-                requestId: parsed.requestId,
-                text,
-            });
-        }
-        catch (error) {
-            app.log.warn({ err: error, userId }, 'Speech transcription failed');
-            send(socket, {
-                type: 'speech-transcription-error',
-                requestId: parsed.requestId,
-                message: error instanceof Error ? error.message : 'Speech transcription failed.',
-            });
-        }
-        return;
-    }
     let delivered = 0;
     const recipientSockets = socketsByUserId.get(parsed.to);
     if (recipientSockets) {
@@ -835,6 +849,75 @@ async function authenticateTokenFromSession(userId, sessionId, decoded) {
         },
     };
 }
+async function convertOfficeDocumentToPdf(fileName, fileBase64) {
+    const inputBuffer = Buffer.from(fileBase64, 'base64');
+    if (inputBuffer.byteLength === 0) {
+        throw new Error('The uploaded office document is empty.');
+    }
+    const normalizedFileName = normalizeOfficeDocumentFileName(fileName);
+    return convertOfficeDocument(inputBuffer, '.pdf', undefined, { fileName: normalizedFileName });
+}
+async function createDocumentPreviewImage(fileName, mimeType, fileBase64) {
+    const normalizedMimeType = mimeType.trim().toLowerCase();
+    const pdfBuffer = normalizedMimeType === 'application/pdf'
+        ? decodeBase64File(fileBase64, 'The uploaded PDF is empty.')
+        : await convertOfficeDocumentToPdf(fileName, fileBase64);
+    return renderPdfFirstPageToPng(pdfBuffer);
+}
+async function renderPdfFirstPageToPng(pdfBuffer) {
+    const tempDirectory = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'privatechat-preview-'));
+    const pdfPath = path.join(tempDirectory, 'source.pdf');
+    const outputBasePath = path.join(tempDirectory, 'page-preview');
+    const imagePath = `${outputBasePath}.png`;
+    try {
+        await fs.promises.writeFile(pdfPath, pdfBuffer);
+        await execFileAsync('pdftoppm', ['-png', '-f', '1', '-singlefile', pdfPath, outputBasePath]);
+        return await fs.promises.readFile(imagePath);
+    }
+    finally {
+        await fs.promises.rm(tempDirectory, { recursive: true, force: true });
+    }
+}
+function decodeBase64File(fileBase64, emptyMessage) {
+    const inputBuffer = Buffer.from(fileBase64, 'base64');
+    if (inputBuffer.byteLength === 0) {
+        throw new Error(emptyMessage);
+    }
+    return inputBuffer;
+}
+function isSupportedPreviewDocument(fileName, mimeType) {
+    if (isPdfFile(fileName, mimeType)) {
+        return true;
+    }
+    return isSupportedOfficeDocument(fileName, mimeType);
+}
+function isSupportedOfficeDocument(fileName, mimeType) {
+    const normalizedFileName = fileName.trim().toLowerCase();
+    const normalizedMimeType = mimeType.trim().toLowerCase();
+    if (normalizedMimeType === 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
+        || normalizedMimeType === 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+        || normalizedMimeType === 'application/vnd.openxmlformats-officedocument.presentationml.presentation') {
+        return true;
+    }
+    return /\.(docx|xlsx|xslx|pptx)$/i.test(normalizedFileName);
+}
+function isPdfFile(fileName, mimeType) {
+    const normalizedFileName = fileName.trim().toLowerCase();
+    const normalizedMimeType = mimeType.trim().toLowerCase();
+    return normalizedMimeType === 'application/pdf' || normalizedFileName.endsWith('.pdf');
+}
+function normalizeOfficeDocumentFileName(fileName) {
+    return fileName.trim().replace(/\.xslx$/i, '.xlsx');
+}
+function describeDocumentPreviewFailure(error) {
+    if (error && typeof error === 'object' && 'code' in error && error.code === 'ENOENT') {
+        return 'Document preview generation failed because a required conversion tool is missing on the server.';
+    }
+    if (error instanceof Error && error.message.trim()) {
+        return `Document preview generation failed: ${error.message}`;
+    }
+    return 'Document preview generation failed.';
+}
 function createUser(input) {
     const createdAt = new Date().toISOString();
     const user = {
@@ -873,6 +956,17 @@ function listAdminUsers() {
         approvedAt: row.approved_at,
     }));
 }
+function listDiscoverableUsers(currentUserId) {
+    const rows = selectAllUsersStatement.all();
+    return rows
+        .filter((row) => row.is_active === 1 && row.id !== currentUserId)
+        .map((row) => ({
+        id: row.id,
+        username: row.username,
+        displayName: row.display_name,
+    }))
+        .sort((left, right) => left.displayName.localeCompare(right.displayName) || left.username.localeCompare(right.username));
+}
 function approveUser(userId) {
     const approvedAt = new Date().toISOString();
     const result = approveUserStatement.run(approvedAt, userId);
@@ -1129,23 +1223,12 @@ function parseClientMessage(rawMessage) {
             prompt: parsed.data.prompt,
         };
     }
-    if (parsed.data.type === 'speech-transcription') {
-        return {
-            type: 'speech-transcription',
-            requestId: parsed.data.requestId,
-            mimeType: parsed.data.mimeType,
-            audioBase64: parsed.data.audioBase64,
-        };
-    }
     return {
         type: 'signal',
         to: parsed.data.to,
         signal: normalizeSignal(parsed.data.signal),
     };
 }
-async function transcribeAudioPayload(requestId, audioBase64, mimeType) {
-    return await speechTranscriber.transcribe(requestId, audioBase64, mimeType);
-}
 async function generateImageFromPrompt(prompt) {
     const abortController = new AbortController();
     const timeoutId = setTimeout(() => abortController.abort(), 120_000);

server/dist/speech-transcriber.js

@@ -1,124 +0,0 @@
-import WebSocket from 'ws';
-export class SpeechTranscriber {
-    options;
-    logger;
-    constructor(options, logger) {
-        this.options = options;
-        this.logger = logger;
-    }
-    async transcribe(requestId, audioBase64, mimeType) {
-        const audio = this.normalizeAudioPayload(audioBase64, mimeType);
-        return await new Promise((resolve, reject) => {
-            let settled = false;
-            const socket = new WebSocket(this.options.serviceUrl);
-            const finish = (handler) => {
-                if (settled) {
-                    return;
-                }
-                settled = true;
-                clearTimeout(timeout);
-                socket.removeAllListeners();
-                if (socket.readyState === WebSocket.CONNECTING || socket.readyState === WebSocket.OPEN) {
-                    socket.close();
-                }
-                handler();
-            };
-            const timeout = setTimeout(() => {
-                finish(() => {
-                    reject(new Error(`The transcription service timed out after ${this.options.requestTimeoutMs}ms.`));
-                });
-            }, this.options.requestTimeoutMs);
-            socket.on('open', () => {
-                try {
-                    socket.send(JSON.stringify({
-                        type: 'transcribe',
-                        id: requestId,
-                        language: this.options.language,
-                        audio,
-                    }));
-                }
-                catch (error) {
-                    finish(() => {
-                        reject(error instanceof Error ? error : new Error('Could not send transcription request.'));
-                    });
-                }
-            });
-            socket.on('message', (payload) => {
-                const event = this.parseEvent(payload);
-                if (!event) {
-                    return;
-                }
-                if (event.id && event.id !== requestId) {
-                    this.logger.warn({ requestId, event }, 'Ignored transcription event for another request');
-                    return;
-                }
-                if (event.type === 'start') {
-                    this.logger.info({ requestId, model: event.model, language: event.language }, 'Speech transcription started');
-                    return;
-                }
-                if (event.type === 'delta') {
-                    return;
-                }
-                if (event.type === 'done') {
-                    finish(() => {
-                        resolve(event.text.trim());
-                    });
-                    return;
-                }
-                finish(() => {
-                    reject(new Error(event.message));
-                });
-            });
-            socket.on('error', (error) => {
-                finish(() => {
-                    reject(error instanceof Error ? error : new Error('The transcription service connection failed.'));
-                });
-            });
-            socket.on('close', (code, reasonBuffer) => {
-                if (settled) {
-                    return;
-                }
-                const reason = reasonBuffer.toString().trim();
-                const detail = reason
-                    ? `The transcription service closed the connection unexpectedly (code=${code}, reason=${reason}).`
-                    : `The transcription service closed the connection unexpectedly (code=${code}).`;
-                finish(() => {
-                    reject(new Error(detail));
-                });
-            });
-        });
-    }
-    normalizeAudioPayload(audioBase64, mimeType) {
-        const trimmedAudio = audioBase64.trim();
-        if (trimmedAudio.startsWith('data:')) {
-            return trimmedAudio;
-        }
-        const normalizedMimeType = mimeType.trim() || 'audio/webm';
-        return `data:${normalizedMimeType};base64,${trimmedAudio}`;
-    }
-    parseEvent(payload) {
-        const message = this.rawDataToString(payload).trim();
-        if (!message) {
-            return null;
-        }
-        try {
-            return JSON.parse(message);
-        }
-        catch {
-            this.logger.warn({ transcriptionPayload: message }, 'Ignored non-JSON transcription event');
-            return null;
-        }
-    }
-    rawDataToString(payload) {
-        if (typeof payload === 'string') {
-            return payload;
-        }
-        if (payload instanceof ArrayBuffer) {
-            return Buffer.from(payload).toString('utf8');
-        }
-        if (Array.isArray(payload)) {
-            return Buffer.concat(payload).toString('utf8');
-        }
-        return payload.toString('utf8');
-    }
-}

server/package-lock.json

@@ -10,26 +10,27 @@
       "dependencies": {
         "@fastify/cors": "^11.2.0",
         "@fastify/jwt": "^10.0.0",
-        "@fastify/static": "^9.0.0",
+        "@fastify/static": "^9.1.0",
         "@fastify/websocket": "^11.2.0",
-        "@simplewebauthn/server": "^13.2.3",
-        "dotenv": "^17.3.1",
-        "fastify": "^5.8.2",
-        "ioredis": "^5.10.0",
-        "ws": "^8.19.0",
+        "@simplewebauthn/server": "^13.3.0",
+        "dotenv": "^17.4.2",
+        "fastify": "^5.8.4",
+        "ioredis": "^5.10.1",
+        "libreoffice-convert": "^1.8.1",
+        "ws": "^8.20.0",
         "zod": "^4.3.6"
       },
       "devDependencies": {
-        "@types/node": "^25.3.5",
+        "@types/node": "^25.6.0",
         "@types/ws": "^8.18.1",
         "tsx": "^4.21.0",
         "typescript": "^5.9.3"
       }
     },
     "node_modules/@esbuild/aix-ppc64": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.27.3.tgz",
-      "integrity": "sha512-9fJMTNFTWZMh5qwrBItuziu834eOCUcEqymSH7pY+zoMVEZg3gcPuBNxH1EvfVYe9h0x/Ptw8KBzv7qxb7l8dg==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/@esbuild/aix-ppc64/-/aix-ppc64-0.27.7.tgz",
+      "integrity": "sha512-EKX3Qwmhz1eMdEJokhALr0YiD0lhQNwDqkPYyPhiSwKrh7/4KRjQc04sZ8db+5DVVnZ1LmbNDI1uAMPEUBnQPg==",
       "cpu": [
         "ppc64"
       ],
@@ -44,9 +45,9 @@
       }
     },
     "node_modules/@esbuild/android-arm": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.27.3.tgz",
-      "integrity": "sha512-i5D1hPY7GIQmXlXhs2w8AWHhenb00+GxjxRncS2ZM7YNVGNfaMxgzSGuO8o8SJzRc/oZwU2bcScvVERk03QhzA==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm/-/android-arm-0.27.7.tgz",
+      "integrity": "sha512-jbPXvB4Yj2yBV7HUfE2KHe4GJX51QplCN1pGbYjvsyCZbQmies29EoJbkEc+vYuU5o45AfQn37vZlyXy4YJ8RQ==",
       "cpu": [
         "arm"
       ],
@@ -61,9 +62,9 @@
       }
     },
     "node_modules/@esbuild/android-arm64": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.27.3.tgz",
-      "integrity": "sha512-YdghPYUmj/FX2SYKJ0OZxf+iaKgMsKHVPF1MAq/P8WirnSpCStzKJFjOjzsW0QQ7oIAiccHdcqjbHmJxRb/dmg==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-arm64/-/android-arm64-0.27.7.tgz",
+      "integrity": "sha512-62dPZHpIXzvChfvfLJow3q5dDtiNMkwiRzPylSCfriLvZeq0a1bWChrGx/BbUbPwOrsWKMn8idSllklzBy+dgQ==",
       "cpu": [
         "arm64"
       ],
@@ -78,9 +79,9 @@
       }
     },
     "node_modules/@esbuild/android-x64": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.27.3.tgz",
-      "integrity": "sha512-IN/0BNTkHtk8lkOM8JWAYFg4ORxBkZQf9zXiEOfERX/CzxW3Vg1ewAhU7QSWQpVIzTW+b8Xy+lGzdYXV6UZObQ==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/@esbuild/android-x64/-/android-x64-0.27.7.tgz",
+      "integrity": "sha512-x5VpMODneVDb70PYV2VQOmIUUiBtY3D3mPBG8NxVk5CogneYhkR7MmM3yR/uMdITLrC1ml/NV1rj4bMJuy9MCg==",
       "cpu": [
         "x64"
       ],
@@ -95,9 +96,9 @@
       }
     },
     "node_modules/@esbuild/darwin-arm64": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.27.3.tgz",
-      "integrity": "sha512-Re491k7ByTVRy0t3EKWajdLIr0gz2kKKfzafkth4Q8A5n1xTHrkqZgLLjFEHVD+AXdUGgQMq+Godfq45mGpCKg==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-arm64/-/darwin-arm64-0.27.7.tgz",
+      "integrity": "sha512-5lckdqeuBPlKUwvoCXIgI2D9/ABmPq3Rdp7IfL70393YgaASt7tbju3Ac+ePVi3KDH6N2RqePfHnXkaDtY9fkw==",
       "cpu": [
         "arm64"
       ],
@@ -112,9 +113,9 @@
       }
     },
     "node_modules/@esbuild/darwin-x64": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.27.3.tgz",
-      "integrity": "sha512-vHk/hA7/1AckjGzRqi6wbo+jaShzRowYip6rt6q7VYEDX4LEy1pZfDpdxCBnGtl+A5zq8iXDcyuxwtv3hNtHFg==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/@esbuild/darwin-x64/-/darwin-x64-0.27.7.tgz",
+      "integrity": "sha512-rYnXrKcXuT7Z+WL5K980jVFdvVKhCHhUwid+dDYQpH+qu+TefcomiMAJpIiC2EM3Rjtq0sO3StMV/+3w3MyyqQ==",
       "cpu": [
         "x64"
       ],
@@ -129,9 +130,9 @@
       }
     },
     "node_modules/@esbuild/freebsd-arm64": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.27.3.tgz",
-      "integrity": "sha512-ipTYM2fjt3kQAYOvo6vcxJx3nBYAzPjgTCk7QEgZG8AUO3ydUhvelmhrbOheMnGOlaSFUoHXB6un+A7q4ygY9w==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/@esbuild/freebsd-arm64/-/freebsd-arm64-0.27.7.tgz",
+      "integrity": "sha512-B48PqeCsEgOtzME2GbNM2roU29AMTuOIN91dsMO30t+Ydis3z/3Ngoj5hhnsOSSwNzS+6JppqWsuhTp6E82l2w==",
       "cpu": [
         "arm64"
       ],
@@ -146,9 +147,9 @@
       }
     },
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+      "resolved": "https://registry.npmjs.org/dotenv/-/dotenv-17.4.2.tgz",
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       "license": "BSD-2-Clause",
       "engines": {
         "node": ">=12"
@@ -1180,9 +1187,9 @@
       }
     },
     "node_modules/esbuild": {
-      "version": "0.27.3",
-      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.27.3.tgz",
-      "integrity": "sha512-8VwMnyGCONIs6cWue2IdpHxHnAjzxnw2Zr7MkVxB2vjmQ2ivqGFb4LEG3SMnv0Gb2F/G/2yA8zUaiL1gywDCCg==",
+      "version": "0.27.7",
+      "resolved": "https://registry.npmjs.org/esbuild/-/esbuild-0.27.7.tgz",
+      "integrity": "sha512-IxpibTjyVnmrIQo5aqNpCgoACA/dTKLTlhMHihVHhdkxKyPO1uBBthumT0rdHmcsk9uMonIWS0m4FljWzILh3w==",
       "dev": true,
       "hasInstallScript": true,
       "license": "MIT",
@@ -1193,32 +1200,32 @@
         "node": ">=18"
       },
       "optionalDependencies": {
-        "@esbuild/aix-ppc64": "0.27.3",
-        "@esbuild/android-arm": "0.27.3",
-        "@esbuild/android-arm64": "0.27.3",
-        "@esbuild/android-x64": "0.27.3",
-        "@esbuild/darwin-arm64": "0.27.3",
-        "@esbuild/darwin-x64": "0.27.3",
-        "@esbuild/freebsd-arm64": "0.27.3",
-        "@esbuild/freebsd-x64": "0.27.3",
-        "@esbuild/linux-arm": "0.27.3",
-        "@esbuild/linux-arm64": "0.27.3",
-        "@esbuild/linux-ia32": "0.27.3",
-        "@esbuild/linux-loong64": "0.27.3",
-        "@esbuild/linux-mips64el": "0.27.3",
-        "@esbuild/linux-ppc64": "0.27.3",
-        "@esbuild/linux-riscv64": "0.27.3",
-        "@esbuild/linux-s390x": "0.27.3",
-        "@esbuild/linux-x64": "0.27.3",
-        "@esbuild/netbsd-arm64": "0.27.3",
-        "@esbuild/netbsd-x64": "0.27.3",
-        "@esbuild/openbsd-arm64": "0.27.3",
-        "@esbuild/openbsd-x64": "0.27.3",
-        "@esbuild/openharmony-arm64": "0.27.3",
-        "@esbuild/sunos-x64": "0.27.3",
-        "@esbuild/win32-arm64": "0.27.3",
-        "@esbuild/win32-ia32": "0.27.3",
-        "@esbuild/win32-x64": "0.27.3"
+        "@esbuild/aix-ppc64": "0.27.7",
+        "@esbuild/android-arm": "0.27.7",
+        "@esbuild/android-arm64": "0.27.7",
+        "@esbuild/android-x64": "0.27.7",
+        "@esbuild/darwin-arm64": "0.27.7",
+        "@esbuild/darwin-x64": "0.27.7",
+        "@esbuild/freebsd-arm64": "0.27.7",
+        "@esbuild/freebsd-x64": "0.27.7",
+        "@esbuild/linux-arm": "0.27.7",
+        "@esbuild/linux-arm64": "0.27.7",
+        "@esbuild/linux-ia32": "0.27.7",
+        "@esbuild/linux-loong64": "0.27.7",
+        "@esbuild/linux-mips64el": "0.27.7",
+        "@esbuild/linux-ppc64": "0.27.7",
+        "@esbuild/linux-riscv64": "0.27.7",
+        "@esbuild/linux-s390x": "0.27.7",
+        "@esbuild/linux-x64": "0.27.7",
+        "@esbuild/netbsd-arm64": "0.27.7",
+        "@esbuild/netbsd-x64": "0.27.7",
+        "@esbuild/openbsd-arm64": "0.27.7",
+        "@esbuild/openbsd-x64": "0.27.7",
+        "@esbuild/openharmony-arm64": "0.27.7",
+        "@esbuild/sunos-x64": "0.27.7",
+        "@esbuild/win32-arm64": "0.27.7",
+        "@esbuild/win32-ia32": "0.27.7",
+        "@esbuild/win32-x64": "0.27.7"
       }
     },
     "node_modules/escape-html": {
@@ -1264,15 +1271,16 @@
       }
     },
     "node_modules/fast-jwt": {
-      "version": "6.1.0",
-      "resolved": "https://registry.npmjs.org/fast-jwt/-/fast-jwt-6.1.0.tgz",
-      "integrity": "sha512-cGK/TXlud8INL49Iv7yRtZy0PHzNJId1shfqNCqdF0gOlWiy+1FPgjxX+ZHp/CYxFYDaoNnxeYEGzcXSkahUEQ==",
+      "version": "6.2.2",
+      "resolved": "https://registry.npmjs.org/fast-jwt/-/fast-jwt-6.2.2.tgz",
+      "integrity": "sha512-lzy+8JVyBOvwxjydFRBKLFVe1elRArL37pHRX1zHPt4T7FP7kNIpqauE1lOjZlD79DBzzRzQmp+28wbsY13weA==",
       "license": "Apache-2.0",
       "dependencies": {
         "@lukeed/ms": "^2.0.2",
         "asn1.js": "^5.4.1",
         "ecdsa-sig-formatter": "^1.0.11",
-        "mnemonist": "^0.40.0"
+        "mnemonist": "^0.40.0",
+        "safe-regex2": "^5.1.0"
       },
       "engines": {
         "node": ">=20"
@@ -1316,9 +1324,9 @@
       }
     },
     "node_modules/fastify": {
-      "version": "5.8.2",
-      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.8.2.tgz",
-      "integrity": "sha512-lZmt3navvZG915IE+f7/TIVamxIwmBd+OMB+O9WBzcpIwOo6F0LTh0sluoMFk5VkrKTvvrwIaoJPkir4Z+jtAg==",
+      "version": "5.8.4",
+      "resolved": "https://registry.npmjs.org/fastify/-/fastify-5.8.4.tgz",
+      "integrity": "sha512-sa42J1xylbBAYUWALSBoyXKPDUvM3OoNOibIefA+Oha57FryXKKCZarA1iDntOCWp3O35voZLuDg2mdODXtPzQ==",
       "funding": [
         {
           "type": "github",
@@ -1423,9 +1431,9 @@
       }
     },
     "node_modules/get-tsconfig": {
-      "version": "4.13.6",
-      "resolved": "https://registry.npmjs.org/get-tsconfig/-/get-tsconfig-4.13.6.tgz",
-      "integrity": "sha512-shZT/QMiSHc/YBLxxOkMtgSid5HFoauqCE3/exfsEcwg1WkeqjG+V40yBbBrsD+jW2HDXcs28xOfcbm2jI8Ddw==",
+      "version": "4.13.7",
+      "resolved": "https://registry.npmjs.org/get-tsconfig/-/get-tsconfig-4.13.7.tgz",
+      "integrity": "sha512-7tN6rFgBlMgpBML5j8typ92BKFi2sFQvIdpAqLA2beia5avZDrMs0FLZiM5etShWq5irVyGcGMEA1jcDaK7A/Q==",
       "dev": true,
       "license": "MIT",
       "dependencies": {
@@ -1479,9 +1487,9 @@
       "license": "ISC"
     },
     "node_modules/ioredis": {
-      "version": "5.10.0",
-      "resolved": "https://registry.npmjs.org/ioredis/-/ioredis-5.10.0.tgz",
-      "integrity": "sha512-HVBe9OFuqs+Z6n64q09PQvP1/R4Bm+30PAyyD4wIEqssh3v9L21QjCVk4kRLucMBcDokJTcLjsGeVRlq/nH6DA==",
+      "version": "5.10.1",
+      "resolved": "https://registry.npmjs.org/ioredis/-/ioredis-5.10.1.tgz",
+      "integrity": "sha512-HuEDBTI70aYdx1v6U97SbNx9F1+svQKBDo30o0b9fw055LMepzpOOd0Ccg9Q6tbqmBSJaMuY0fB7yw9/vjBYCA==",
       "license": "MIT",
       "dependencies": {
         "@ioredis/commands": "1.5.1",
@@ -1536,6 +1544,19 @@
       "integrity": "sha512-NM8/P9n3XjXhIZn1lLhkFaACTOURQXjWhV4BA/RnOv8xvgqtqpAX9IO4mRQxSx1Rlo4tqzeqb0sOlruaOy3dug==",
       "license": "MIT"
     },
+    "node_modules/libreoffice-convert": {
+      "version": "1.8.1",
+      "resolved": "https://registry.npmjs.org/libreoffice-convert/-/libreoffice-convert-1.8.1.tgz",
+      "integrity": "sha512-iZ1DD/EMTlPvol8G++QQ/0w4pVecSwRuhMLXRm7nRim/gcaSscSXuTO9Tgbkieyw5UdJg7UXD+lkFT8SCi51Dw==",
+      "license": "MIT",
+      "dependencies": {
+        "async": "^3.2.3",
+        "tmp": "^0.2.1"
+      },
+      "engines": {
+        "node": ">=6"
+      }
+    },
     "node_modules/light-my-request": {
       "version": "6.6.0",
       "resolved": "https://registry.npmjs.org/light-my-request/-/light-my-request-6.6.0.tgz",
@@ -1586,9 +1607,9 @@
       "license": "MIT"
     },
     "node_modules/lru-cache": {
-      "version": "11.2.6",
-      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.2.6.tgz",
-      "integrity": "sha512-ESL2CrkS/2wTPfuend7Zhkzo2u0daGJ/A2VucJOgQ/C48S/zB8MMeMHSGKYpXhIjbPxfuezITkaBH1wqv00DDQ==",
+      "version": "11.3.3",
+      "resolved": "https://registry.npmjs.org/lru-cache/-/lru-cache-11.3.3.tgz",
+      "integrity": "sha512-JvNw9Y81y33E+BEYPr0U7omo+U9AySnsMsEiXgwT6yqd31VQWTLNQqmT4ou5eqPFUrTfIDFta2wKhB1hyohtAQ==",
       "license": "BlueOak-1.0.0",
       "engines": {
         "node": "20 || >=22"
@@ -1613,12 +1634,12 @@
       "license": "ISC"
     },
     "node_modules/minimatch": {
-      "version": "10.2.4",
-      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.4.tgz",
-      "integrity": "sha512-oRjTw/97aTBN0RHbYCdtF1MQfvusSIBQM0IZEgzl6426+8jSC0nF1a/GmnVLpfB9yyr6g6FTqWqiZVbxrtaCIg==",
+      "version": "10.2.5",
+      "resolved": "https://registry.npmjs.org/minimatch/-/minimatch-10.2.5.tgz",
+      "integrity": "sha512-MULkVLfKGYDFYejP07QOurDLLQpcjk7Fw+7jXS2R2czRQzR56yHRveU5NDJEOviH+hETZKSkIk5c+T23GjFUMg==",
       "license": "BlueOak-1.0.0",
       "dependencies": {
-        "brace-expansion": "^5.0.2"
+        "brace-expansion": "^5.0.5"
       },
       "engines": {
         "node": "18 || 20 || >=22"
@@ -1883,9 +1904,9 @@
       "license": "MIT"
     },
     "node_modules/safe-regex2": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/safe-regex2/-/safe-regex2-5.0.0.tgz",
-      "integrity": "sha512-YwJwe5a51WlK7KbOJREPdjNrpViQBI3p4T50lfwPuDhZnE3XGVTlGvi+aolc5+RvxDD6bnUmjVsU9n1eboLUYw==",
+      "version": "5.1.0",
+      "resolved": "https://registry.npmjs.org/safe-regex2/-/safe-regex2-5.1.0.tgz",
+      "integrity": "sha512-pNHAuBW7TrcleFHsxBr5QMi/Iyp0ENjUKz7GCcX1UO7cMh+NmVK6HxQckNL1tJp1XAJVjG6B8OKIPqodqj9rtw==",
       "funding": [
         {
           "type": "github",
@@ -1899,6 +1920,9 @@
       "license": "MIT",
       "dependencies": {
         "ret": "~0.5.0"
+      },
+      "bin": {
+        "safe-regex2": "bin/safe-regex2.js"
       }
     },
     "node_modules/safe-stable-stringify": {
@@ -2029,6 +2053,15 @@
         "node": ">=20"
       }
     },
+    "node_modules/tmp": {
+      "version": "0.2.5",
+      "resolved": "https://registry.npmjs.org/tmp/-/tmp-0.2.5.tgz",
+      "integrity": "sha512-voyz6MApa1rQGUxT3E+BK7/ROe8itEx7vD8/HEvt4xwXucvQ5G5oeEiHkmHZJuBO21RpOf+YYm9MOivj709jow==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=14.14"
+      }
+    },
     "node_modules/toad-cache": {
       "version": "3.7.0",
       "resolved": "https://registry.npmjs.org/toad-cache/-/toad-cache-3.7.0.tgz",
@@ -2106,9 +2139,9 @@
       }
     },
     "node_modules/undici-types": {
-      "version": "7.18.2",
-      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.18.2.tgz",
-      "integrity": "sha512-AsuCzffGHJybSaRrmr5eHr81mwJU3kjw6M+uprWvCXiNeN9SOGwQ3Jn8jb8m3Z6izVgknn1R0FTCEAP2QrLY/w==",
+      "version": "7.19.2",
+      "resolved": "https://registry.npmjs.org/undici-types/-/undici-types-7.19.2.tgz",
+      "integrity": "sha512-qYVnV5OEm2AW8cJMCpdV20CDyaN3g0AjDlOGf1OW4iaDEx8MwdtChUp4zu4H0VP3nDRF/8RKWH+IPp9uW0YGZg==",
       "dev": true,
       "license": "MIT"
     },
@@ -2125,9 +2158,9 @@
       "license": "ISC"
     },
     "node_modules/ws": {
-      "version": "8.19.0",
-      "resolved": "https://registry.npmjs.org/ws/-/ws-8.19.0.tgz",
-      "integrity": "sha512-blAT2mjOEIi0ZzruJfIhb3nps74PRWTCz1IjglWEEpQl5XS/UNama6u2/rjFkDDouqr4L67ry+1aGIALViWjDg==",
+      "version": "8.20.0",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.20.0.tgz",
+      "integrity": "sha512-sAt8BhgNbzCtgGbt2OxmpuryO63ZoDk/sqaB/znQm94T4fCEsy/yV+7CdC1kJhOU9lboAEU7R3kquuycDoibVA==",
       "license": "MIT",
       "engines": {
         "node": ">=10.0.0"

server/package.json

@@ -11,17 +11,18 @@
   "dependencies": {
     "@fastify/cors": "^11.2.0",
     "@fastify/jwt": "^10.0.0",
-    "@fastify/static": "^9.0.0",
+    "@fastify/static": "^9.1.0",
     "@fastify/websocket": "^11.2.0",
-    "@simplewebauthn/server": "^13.2.3",
-    "dotenv": "^17.3.1",
-    "fastify": "^5.8.2",
-    "ioredis": "^5.10.0",
-    "ws": "^8.19.0",
+    "@simplewebauthn/server": "^13.3.0",
+    "dotenv": "^17.4.2",
+    "fastify": "^5.8.4",
+    "ioredis": "^5.10.1",
+    "libreoffice-convert": "^1.8.1",
+    "ws": "^8.20.0",
     "zod": "^4.3.6"
   },
   "devDependencies": {
-    "@types/node": "^25.3.5",
+    "@types/node": "^25.6.0",
     "@types/ws": "^8.18.1",
     "tsx": "^4.21.0",
     "typescript": "^5.9.3"

server/src/index.ts

@@ -1,8 +1,10 @@
 import crypto from 'node:crypto';
+import { execFile } from 'node:child_process';
 import fs from 'node:fs';
+import os from 'node:os';
 import path from 'node:path';
 import { fileURLToPath } from 'node:url';
-import { TextEncoder } from 'node:util';
+import { promisify, TextEncoder } from 'node:util';
 import { DatabaseSync } from 'node:sqlite';
 
 import cors from '@fastify/cors';
@@ -10,6 +12,7 @@ import jwt from '@fastify/jwt';
 import fastifyStatic from '@fastify/static';
 import websocket from '@fastify/websocket';
 import dotenv from 'dotenv';
+import libreOffice from 'libreoffice-convert';
 import {
   generateAuthenticationOptions,
   generateRegistrationOptions,
@@ -23,8 +26,6 @@ import { Redis } from 'ioredis';
 import type WebSocket from 'ws';
 import { z } from 'zod';
 
-import { SpeechTranscriber } from './speech-transcriber.js';
-
 dotenv.config({ path: fileURLToPath(new URL('../../.env', import.meta.url)) });
 
 const projectRootPath = fileURLToPath(new URL('../../', import.meta.url));
@@ -122,12 +123,6 @@ type ClientMessage =
     }
   | {
       type: 'ping';
-    }
-  | {
-      type: 'speech-transcription';
-      requestId: string;
-      mimeType: string;
-      audioBase64: string;
     };
 
 type ServerMessage =
@@ -150,16 +145,6 @@ type ServerMessage =
       peerId: string;
       message: string;
     }
-  | {
-      type: 'speech-transcribed';
-      requestId: string;
-      text: string;
-    }
-  | {
-      type: 'speech-transcription-error';
-      requestId: string;
-      message: string;
-    }
   | { type: 'pong' }
   | { type: 'error'; message: string };
 
@@ -271,6 +256,12 @@ const webBundleFileParamsSchema = z.object({
   '*': z.string().min(1),
 });
 
+const documentPreviewSchema = z.object({
+  fileName: z.string().trim().min(1).max(256),
+  mimeType: z.string().trim().min(1).max(256),
+  fileBase64: z.string().min(1).max(96_000_000),
+});
+
 const wsQuerySchema = z.object({
   token: z.string().min(1),
 });
@@ -307,12 +298,6 @@ const signalMessageSchema = z.discriminatedUnion('type', [
   z.object({
     type: z.literal('ping'),
   }),
-  z.object({
-    type: z.literal('speech-transcription'),
-    requestId: z.string().uuid(),
-    mimeType: z.string().trim().min(1).max(128),
-    audioBase64: z.string().min(1).max(32_000_000),
-  }),
 ]);
 
 const app = Fastify({ logger: true, trustProxy: true });
@@ -331,9 +316,6 @@ const frontendDistPath = resolveProjectPath(
 const ollamaServerUrl = (process.env.PRIVATECHAT_OLLAMA_URL ?? 'http://192.168.1.19:11434').replace(/\/+$/, '');
 const ollamaImageModel = process.env.PRIVATECHAT_OLLAMA_IMAGE_MODEL ?? 'x/z-image-turbo:latest';
 const ollamaImageSize = process.env.PRIVATECHAT_OLLAMA_IMAGE_SIZE ?? '1024x1024';
-const speechTranscriptionServiceUrl = process.env.PRIVATECHAT_TRANSCRIPTION_WS_URL ?? 'ws://192.168.1.19:8080';
-const speechTranscriptionLanguage = process.env.PRIVATECHAT_TRANSCRIPTION_LANGUAGE ?? 'auto';
-const speechTranscriptionTimeoutMs = Number(process.env.PRIVATECHAT_TRANSCRIPTION_TIMEOUT_MS ?? 120_000);
 const sessionTtlSeconds = Number(process.env.SESSION_TTL_SECONDS ?? 60 * 60 * 12);
 const webAuthnChallengeTtlSeconds = Number(process.env.WEBAUTHN_CHALLENGE_TTL_SECONDS ?? 5 * 60);
 const allowedCorsOrigins = parseAllowedOrigins(process.env.CORS_ORIGIN);
@@ -346,15 +328,8 @@ const webAuthnUserVerification = resolveWebAuthnUserVerification(
 );
 const frontendIndexPath = path.join(frontendDistPath, 'index.html');
 const hasFrontendBuild = fs.existsSync(frontendIndexPath);
-
-const speechTranscriber = new SpeechTranscriber(
-  {
-    serviceUrl: speechTranscriptionServiceUrl,
-    language: speechTranscriptionLanguage,
-    requestTimeoutMs: speechTranscriptionTimeoutMs,
-  },
-  app.log,
-);
+const convertOfficeDocument = promisify(libreOffice.convertWithOptions);
+const execFileAsync = promisify(execFile);
 
 fs.mkdirSync(path.dirname(sqlitePath), { recursive: true });
 fs.mkdirSync(path.dirname(masterKeyPath), { recursive: true });
@@ -795,6 +770,57 @@ app.get('/api/auth/session', async (request, reply) => {
   };
 });
 
+app.get('/api/users', async (request, reply) => {
+  const authContext = await authenticateRequest(request, reply);
+
+  if (!authContext) {
+    return;
+  }
+
+  return {
+    users: listDiscoverableUsers(authContext.user.id),
+  };
+});
+
+app.post('/api/files/document-preview-image', { bodyLimit: 64 * 1024 * 1024 }, async (request, reply) => {
+  const authContext = await authenticateRequest(request, reply);
+
+  if (!authContext) {
+    return;
+  }
+
+  const parsed = documentPreviewSchema.safeParse(request.body);
+
+  if (!parsed.success) {
+    return reply.code(400).send({
+      message: 'Invalid document preview payload.',
+      issues: parsed.error.flatten(),
+    });
+  }
+
+  if (!isSupportedPreviewDocument(parsed.data.fileName, parsed.data.mimeType)) {
+    return reply.code(400).send({ message: 'Only PDF, DOCX, XLSX, and PPTX files can be previewed.' });
+  }
+
+  try {
+    const previewImageBuffer = await createDocumentPreviewImage(
+      parsed.data.fileName,
+      parsed.data.mimeType,
+      parsed.data.fileBase64,
+    );
+
+    return {
+      mimeType: 'image/png',
+      imageBase64: previewImageBuffer.toString('base64'),
+    };
+  } catch (error) {
+    app.log.warn({ err: error, userId: authContext.user.id }, 'Document preview generation failed');
+    return reply.code(422).send({
+      message: describeDocumentPreviewFailure(error),
+    });
+  }
+});
+
 app.get('/api/admin/pending-users', async (request, reply) => {
   const authContext = await authenticateRequest(request, reply);
 
@@ -1163,27 +1189,6 @@ async function handleSocketMessage(
     return;
   }
 
-  if (parsed.type === 'speech-transcription') {
-    try {
-      const text = await transcribeAudioPayload(parsed.requestId, parsed.audioBase64, parsed.mimeType);
-
-      send(socket, {
-        type: 'speech-transcribed',
-        requestId: parsed.requestId,
-        text,
-      });
-    } catch (error) {
-      app.log.warn({ err: error, userId }, 'Speech transcription failed');
-      send(socket, {
-        type: 'speech-transcription-error',
-        requestId: parsed.requestId,
-        message: error instanceof Error ? error.message : 'Speech transcription failed.',
-      });
-    }
-
-    return;
-  }
-
   let delivered = 0;
   const recipientSockets = socketsByUserId.get(parsed.to);
 
@@ -1294,6 +1299,101 @@ async function authenticateTokenFromSession(
   };
 }
 
+async function convertOfficeDocumentToPdf(fileName: string, fileBase64: string): Promise<Buffer> {
+  const inputBuffer = Buffer.from(fileBase64, 'base64');
+
+  if (inputBuffer.byteLength === 0) {
+    throw new Error('The uploaded office document is empty.');
+  }
+
+  const normalizedFileName = normalizeOfficeDocumentFileName(fileName);
+  return convertOfficeDocument(inputBuffer, '.pdf', undefined, { fileName: normalizedFileName });
+}
+
+async function createDocumentPreviewImage(
+  fileName: string,
+  mimeType: string,
+  fileBase64: string,
+): Promise<Buffer> {
+  const normalizedMimeType = mimeType.trim().toLowerCase();
+  const pdfBuffer = normalizedMimeType === 'application/pdf'
+    ? decodeBase64File(fileBase64, 'The uploaded PDF is empty.')
+    : await convertOfficeDocumentToPdf(fileName, fileBase64);
+
+  return renderPdfFirstPageToPng(pdfBuffer);
+}
+
+async function renderPdfFirstPageToPng(pdfBuffer: Buffer): Promise<Buffer> {
+  const tempDirectory = await fs.promises.mkdtemp(path.join(os.tmpdir(), 'privatechat-preview-'));
+  const pdfPath = path.join(tempDirectory, 'source.pdf');
+  const outputBasePath = path.join(tempDirectory, 'page-preview');
+  const imagePath = `${outputBasePath}.png`;
+
+  try {
+    await fs.promises.writeFile(pdfPath, pdfBuffer);
+    await execFileAsync('pdftoppm', ['-png', '-f', '1', '-singlefile', pdfPath, outputBasePath]);
+    return await fs.promises.readFile(imagePath);
+  } finally {
+    await fs.promises.rm(tempDirectory, { recursive: true, force: true });
+  }
+}
+
+function decodeBase64File(fileBase64: string, emptyMessage: string): Buffer {
+  const inputBuffer = Buffer.from(fileBase64, 'base64');
+
+  if (inputBuffer.byteLength === 0) {
+    throw new Error(emptyMessage);
+  }
+
+  return inputBuffer;
+}
+
+function isSupportedPreviewDocument(fileName: string, mimeType: string): boolean {
+  if (isPdfFile(fileName, mimeType)) {
+    return true;
+  }
+
+  return isSupportedOfficeDocument(fileName, mimeType);
+}
+
+function isSupportedOfficeDocument(fileName: string, mimeType: string): boolean {
+  const normalizedFileName = fileName.trim().toLowerCase();
+  const normalizedMimeType = mimeType.trim().toLowerCase();
+
+  if (
+    normalizedMimeType === 'application/vnd.openxmlformats-officedocument.wordprocessingml.document'
+    || normalizedMimeType === 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet'
+    || normalizedMimeType === 'application/vnd.openxmlformats-officedocument.presentationml.presentation'
+  ) {
+    return true;
+  }
+
+  return /\.(docx|xlsx|xslx|pptx)$/i.test(normalizedFileName);
+}
+
+function isPdfFile(fileName: string, mimeType: string): boolean {
+  const normalizedFileName = fileName.trim().toLowerCase();
+  const normalizedMimeType = mimeType.trim().toLowerCase();
+
+  return normalizedMimeType === 'application/pdf' || normalizedFileName.endsWith('.pdf');
+}
+
+function normalizeOfficeDocumentFileName(fileName: string): string {
+  return fileName.trim().replace(/\.xslx$/i, '.xlsx');
+}
+
+function describeDocumentPreviewFailure(error: unknown): string {
+  if (error && typeof error === 'object' && 'code' in error && error.code === 'ENOENT') {
+    return 'Document preview generation failed because a required conversion tool is missing on the server.';
+  }
+
+  if (error instanceof Error && error.message.trim()) {
+    return `Document preview generation failed: ${error.message}`;
+  }
+
+  return 'Document preview generation failed.';
+}
+
 function createUser(input: {
   username: string;
   displayName: string;
@@ -1352,6 +1452,21 @@ function listAdminUsers(): AdminUserSummary[] {
   }));
 }
 
+function listDiscoverableUsers(currentUserId: string): PublicUser[] {
+  const rows = selectAllUsersStatement.all() as DatabaseUserRow[];
+
+  return rows
+    .filter((row) => row.is_active === 1 && row.id !== currentUserId)
+    .map((row) => ({
+      id: row.id,
+      username: row.username,
+      displayName: row.display_name,
+    }))
+    .sort((left, right) =>
+      left.displayName.localeCompare(right.displayName) || left.username.localeCompare(right.username),
+    );
+}
+
 function approveUser(userId: string): UserRecord | null {
   const approvedAt = new Date().toISOString();
   const result = approveUserStatement.run(approvedAt, userId);
@@ -1725,15 +1840,6 @@ function parseClientMessage(rawMessage: string): ClientMessage | null {
     };
   }
 
-  if (parsed.data.type === 'speech-transcription') {
-    return {
-      type: 'speech-transcription',
-      requestId: parsed.data.requestId,
-      mimeType: parsed.data.mimeType,
-      audioBase64: parsed.data.audioBase64,
-    };
-  }
-
   return {
     type: 'signal',
     to: parsed.data.to,
@@ -1741,10 +1847,6 @@ function parseClientMessage(rawMessage: string): ClientMessage | null {
   };
 }
 
-async function transcribeAudioPayload(requestId: string, audioBase64: string, mimeType: string): Promise<string> {
-  return await speechTranscriber.transcribe(requestId, audioBase64, mimeType);
-}
-
 async function generateImageFromPrompt(prompt: string): Promise<{ imageBase64: string; mimeType: string }> {
   const abortController = new AbortController();
   const timeoutId = setTimeout(() => abortController.abort(), 120_000);

server/src/speech-transcriber.ts

@@ -1,173 +0,0 @@
-import WebSocket, { type RawData } from 'ws';
-
-type LoggerLike = {
-  info: (payload: unknown, message?: string) => void;
-  warn: (payload: unknown, message?: string) => void;
-  error: (payload: unknown, message?: string) => void;
-};
-
-type SpeechTranscriberOptions = {
-  serviceUrl: string;
-  language: string;
-  requestTimeoutMs: number;
-};
-
-type ServiceEvent =
-  | { type: 'start'; id: string; model: string; language: string }
-  | { type: 'delta'; id: string; text: string; fullText: string }
-  | { type: 'done'; id: string; text: string }
-  | { type: 'error'; id?: string; message: string };
-
-export class SpeechTranscriber {
-  constructor(
-    private readonly options: SpeechTranscriberOptions,
-    private readonly logger: LoggerLike,
-  ) {}
-
-  async transcribe(requestId: string, audioBase64: string, mimeType: string): Promise<string> {
-    const audio = this.normalizeAudioPayload(audioBase64, mimeType);
-
-    return await new Promise<string>((resolve, reject) => {
-      let settled = false;
-      const socket = new WebSocket(this.options.serviceUrl);
-
-      const finish = (handler: () => void): void => {
-        if (settled) {
-          return;
-        }
-
-        settled = true;
-        clearTimeout(timeout);
-        socket.removeAllListeners();
-
-        if (socket.readyState === WebSocket.CONNECTING || socket.readyState === WebSocket.OPEN) {
-          socket.close();
-        }
-
-        handler();
-      };
-
-      const timeout = setTimeout(() => {
-        finish(() => {
-          reject(new Error(`The transcription service timed out after ${this.options.requestTimeoutMs}ms.`));
-        });
-      }, this.options.requestTimeoutMs);
-
-      socket.on('open', () => {
-        try {
-          socket.send(
-            JSON.stringify({
-              type: 'transcribe',
-              id: requestId,
-              language: this.options.language,
-              audio,
-            }),
-          );
-        } catch (error) {
-          finish(() => {
-            reject(error instanceof Error ? error : new Error('Could not send transcription request.'));
-          });
-        }
-      });
-
-      socket.on('message', (payload) => {
-        const event = this.parseEvent(payload);
-
-        if (!event) {
-          return;
-        }
-
-        if (event.id && event.id !== requestId) {
-          this.logger.warn({ requestId, event }, 'Ignored transcription event for another request');
-          return;
-        }
-
-        if (event.type === 'start') {
-          this.logger.info(
-            { requestId, model: event.model, language: event.language },
-            'Speech transcription started',
-          );
-          return;
-        }
-
-        if (event.type === 'delta') {
-          return;
-        }
-
-        if (event.type === 'done') {
-          finish(() => {
-            resolve(event.text.trim());
-          });
-          return;
-        }
-
-        finish(() => {
-          reject(new Error(event.message));
-        });
-      });
-
-      socket.on('error', (error) => {
-        finish(() => {
-          reject(error instanceof Error ? error : new Error('The transcription service connection failed.'));
-        });
-      });
-
-      socket.on('close', (code, reasonBuffer) => {
-        if (settled) {
-          return;
-        }
-
-        const reason = reasonBuffer.toString().trim();
-        const detail = reason
-          ? `The transcription service closed the connection unexpectedly (code=${code}, reason=${reason}).`
-          : `The transcription service closed the connection unexpectedly (code=${code}).`;
-
-        finish(() => {
-          reject(new Error(detail));
-        });
-      });
-    });
-  }
-
-  private normalizeAudioPayload(audioBase64: string, mimeType: string): string {
-    const trimmedAudio = audioBase64.trim();
-
-    if (trimmedAudio.startsWith('data:')) {
-      return trimmedAudio;
-    }
-
-    const normalizedMimeType = mimeType.trim() || 'audio/webm';
-    return `data:${normalizedMimeType};base64,${trimmedAudio}`;
-  }
-
-  private parseEvent(payload: RawData): ServiceEvent | null {
-    const message = this.rawDataToString(payload).trim();
-
-    if (!message) {
-      return null;
-    }
-
-    try {
-      return JSON.parse(message) as ServiceEvent;
-    } catch {
-      this.logger.warn({ transcriptionPayload: message }, 'Ignored non-JSON transcription event');
-      return null;
-    }
-  }
-
-  private rawDataToString(payload: RawData): string {
-    if (typeof payload === 'string') {
-      return payload;
-    }
-
-    if (payload instanceof ArrayBuffer) {
-      return Buffer.from(payload).toString('utf8');
-    }
-
-    if (Array.isArray(payload)) {
-      return Buffer.concat(payload).toString('utf8');
-    }
-
-    return payload.toString('utf8');
-  }
-}