fix syntax errors

Co-authored-by: coderabbitai[bot] <136622811+coderabbitai[bot]@users.noreply.github.com>

.github/workflows/pr-quality-gate-desktop.yml

@@ -1,43 +1,14 @@
-name: PR Quality Gate (client applications)
+name: PR Quality Gate (Desktop)
 
 on:
   pull_request:
     paths:
-      - "js/mobile/**"
       - "js/desktop/**"
     branches: [ main ]
     types: [ opened, synchronize, reopened ]
 
 jobs:
-  mobile:
-    name: Lint & format check (mobile)
-    runs-on: ubuntu-latest
-    defaults:
-      run:
-        working-directory: js/mobile
-
-    steps:
-      - name: Check out repository code
-        uses: actions/checkout@v4
-
-      - name: Set up Node.js
-        uses: actions/setup-node@v4
-        with:
-          node-version: '20'
-
-      - name: Enable Corepack
-        run: corepack enable
-
-      - name: Install dependencies
-        run: yarn install --immutable
-        
-      - name: Run Code Linter
-        run: yarn lint
-
-      - name: Run Format Check
-        run: yarn format:check
-
-  desktop:
+  verify:
     name: Lint & format check (desktop)
     runs-on: ubuntu-latest
     defaults:

.github/workflows/pr-quality-gate-mobile.yml

@@ -0,0 +1,37 @@
+name: PR Quality Gate (Mobile)
+
+on:
+  pull_request:
+    paths:
+      - "js/mobile/**"
+    branches: [ main ]
+    types: [ opened, synchronize, reopened ]
+
+jobs:
+  verify:
+    name: Lint & format check (mobile)
+    runs-on: ubuntu-latest
+    defaults:
+      run:
+        working-directory: js/mobile
+
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: '20'
+
+      - name: Enable Corepack
+        run: corepack enable
+
+      - name: Install dependencies
+        run: yarn install --immutable
+        
+      - name: Run Code Linter
+        run: yarn lint
+
+      - name: Run Format Check
+        run: yarn format:check

CLAUDE.md

@@ -1,20 +1,24 @@
 # Project Rules
 
 ## Architecture
-- Electron typescript/react app is in `js/` folder
-- Orion is the api server which lives in the `go/` folder
+- Electron typescript/react app is in `js/desktop` folder
+- Mobile react native expo app is in `js/mobile`
+- Orion is the api server which lives in the `go/` folder along with other workers, jobs, services
 - `cpp/` points to our prototype of a C++ Qt widgets client
 
 Whenever implementing anything, make sure to take into account best practices without over-engineering.
 
 ## Electron App
 ### Quality
-We care about overall architectural quality and keeping consistent patterns according to best practices.
+We care about overall architectural quality and keeping consistent patterns according to best practices. Feel free to move stuff around to make things more elegant, instead of bolting on features.
 
 Another tradeoff we make is simpler, maintainable code over clever behavior.
 
 As an example, we have as high of a bar as a product team like Linear and Apple, which outputs high quality software. Let's avoid slop at all costs.
 
+### Comments
+Don't add non-essential comments everywhere. Clean them up if so.
+
 ### Package Manager
 - Use **yarn** (not npm) for all dependency management
 
@@ -25,6 +29,3 @@ Whenever possible, we should use the design system components. If we need to add
 When adding a feature on the client side, make sure that the api actually supports it by just checking orion implementation all the way through.
 
 IF you find that the API is poorly designed, please suggest changes to improve the client experience.
-
-## Verification
-Check using `yarn compile` which lives in the package.json as a script.

go/cmd/orion/main.go

@@ -147,6 +147,11 @@ func main() {
 
 	// Settings
 	mux.Handle("PATCH /humans/me/settings", withAuth(h.UpdateSettings))
+	mux.Handle("PUT /humans/me/avatar", withAuth(h.UpdateAvatar))
+	mux.Handle("DELETE /humans/me/avatar", withAuth(h.DeleteAvatar))
+
+	// Get avatar download url, given objectId
+	mux.Handle("GET /humans/avatar/{id}", withAuth(h.GetObjectDownloadUrl))
 
 	// Push notification tokens (per-device)
 	mux.Handle("POST /humans/me/push-tokens", withAuth(h.RegisterPushToken))
@@ -174,7 +179,7 @@ func main() {
 	mux.Handle("POST /invitations/accept", withAuth(h.AcceptInvitation))
 
 	// Particles
-	mux.Handle("GET /particles/{id}/download", withAuth(h.DownloadParticleMedia))
+	mux.Handle("GET /particles/{id}/download", withAuth(h.GetObjectDownloadUrl))
 
 	// Link metadata
 	mux.Handle("GET /metadata", withAuth(h.GetLinkMetadata))

go/internal/handler/handler.go

@@ -73,6 +73,7 @@ type Human struct {
 	Email                     string    `json:"email"`
 	EmailPrefix               string    `json:"email_prefix"`
 	EmailNotificationsEnabled bool      `json:"email_notifications_enabled"`
+	AvatarObjectID            *string   `json:"avatar_object_id"`
 	CreatedAt                 time.Time `json:"created_at"`
 }
 
@@ -334,6 +335,83 @@ func (h *Handler) UpdateSettings(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusNoContent)
 }
 
+func (h *Handler) DeleteAvatar(w http.ResponseWriter, r *http.Request) {
+	humanId, ok := middleware.HumanIdFromContext(r.Context())
+	if !ok {
+		http.Error(w, "unauthorized", http.StatusUnauthorized)
+		return
+	}
+
+	human, err := h.humanSvc.GetByID(r.Context(), humanId)
+	if err != nil {
+		flog.Error("failed to get human by id", "error", err, "humanId", humanId)
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+		return
+	}
+
+	err = h.humanSvc.DeleteAvatar(r.Context(), humanId)
+	if err != nil {
+		flog.Error("failed to delete avatar from human", "error", err)
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+		return
+	}
+
+	if human.AvatarObjectID != nil {
+		err = h.depotSvc.Delete(r.Context(), utils.OptionalString(human.AvatarObjectID))
+		if err != nil {
+			flog.Error("failed to delete object", "error", err, "objectID", human.AvatarObjectID)
+		}
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+	return
+}
+
+func (h *Handler) UpdateAvatar(w http.ResponseWriter, r *http.Request) {
+	humanId, ok := middleware.HumanIdFromContext(r.Context())
+	if !ok {
+		http.Error(w, "unauthorized", http.StatusUnauthorized)
+		return
+	}
+
+	// 5MB limit = 5 * 1024 * 1024 bytes
+	const maxBodySize = 5 << 20
+
+	r.Body = http.MaxBytesReader(w, r.Body, maxBodySize)
+
+	object, err := h.depotSvc.CreateFromReader(r.Context(), depot.CreateFromReaderInput{
+		Prefix:      "avatars",
+		Name:        fmt.Sprintf("%s-avatar", humanId),
+		ContentType: r.Header.Get("Content-Type"),
+	}, r.Body)
+	if err != nil {
+		var maxErr *http.MaxBytesError
+		if errors.As(err, &maxErr) {
+			http.Error(w, "avatar file too large", http.StatusRequestEntityTooLarge)
+			return
+		}
+		flog.Error("failed to upload avatar with depo", "error", err, "humanId", humanId)
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+		return
+	}
+
+	err = h.humanSvc.UpdateAvatar(r.Context(), humanId, object.ID)
+	if err != nil {
+		flog.Error("failed to update human avatar", "error", err, "humanId", humanId)
+		http.Error(w, "internal server error", http.StatusInternalServerError)
+
+		// best effort
+		err = h.depotSvc.Delete(r.Context(), object.ID)
+		if err != nil {
+			flog.Error("best-effort delete of object failed", "error", err)
+		}
+
+		return
+	}
+
+	w.WriteHeader(http.StatusNoContent)
+}
+
 // ============================================================================
 // Network Handlers
 // ============================================================================
@@ -717,8 +795,8 @@ func (h *Handler) RevokeInvitation(w http.ResponseWriter, r *http.Request) {
 	w.WriteHeader(http.StatusNoContent)
 }
 
-// DownloadParticleMedia returns a fresh signed URL for media/file particles.
-func (h *Handler) DownloadParticleMedia(w http.ResponseWriter, r *http.Request) {
+// GetObjectDownloadUrl returns a fresh signed URL for media/file particles.
+func (h *Handler) GetObjectDownloadUrl(w http.ResponseWriter, r *http.Request) {
 	_, ok := middleware.EmailFromContext(r.Context())
 	if !ok {
 		http.Error(w, "unauthorized", http.StatusUnauthorized)
@@ -1007,6 +1085,7 @@ func humanToDTO(h *human.Human) Human {
 		Email:                     h.Email,
 		EmailPrefix:               h.EmailPrefix,
 		EmailNotificationsEnabled: h.EmailNotificationsEnabled,
+		AvatarObjectID:            h.AvatarObjectID,
 		CreatedAt:                 h.CreatedAt,
 	}
 }

go/internal/human/models.go

@@ -7,6 +7,7 @@ type Human struct {
 	Email                       string
 	EmailPrefix                 string
 	EmailNotificationsEnabled   bool
+	AvatarObjectID              *string
 	LastEmailNotificationSentAt *time.Time
 	CreatedAt                   time.Time
 }

go/internal/human/repository.go

@@ -37,6 +37,7 @@ type repository interface {
 	listAll(ctx context.Context) ([]*Human, error)
 	updateEmailNotificationsEnabled(ctx context.Context, id string, enabled bool) error
 	updateLastEmailNotificationSentAt(ctx context.Context, id string, t time.Time) error
+	updateAvatarObjectID(ctx context.Context, id string, objectID *string) error
 }
 
 type repositoryImpl struct {
@@ -50,9 +51,9 @@ func newRepository(pool *pgxpool.Pool) repository {
 func (r *repositoryImpl) getByEmail(ctx context.Context, email string) (*Human, error) {
 	var h Human
 	err := r.pool.QueryRow(ctx,
-		`SELECT id, email, email_notifications_enabled, last_email_notification_sent_at, created_at FROM humans WHERE email = $1`,
+		`SELECT id, email, email_notifications_enabled, last_email_notification_sent_at, created_at, avatar_object_id FROM humans WHERE email = $1`,
 		email,
-	).Scan(&h.ID, &h.Email, &h.EmailNotificationsEnabled, &h.LastEmailNotificationSentAt, &h.CreatedAt)
+	).Scan(&h.ID, &h.Email, &h.EmailNotificationsEnabled, &h.LastEmailNotificationSentAt, &h.CreatedAt, &h.AvatarObjectID)
 	if err != nil {
 		if errors.Is(err, pgx.ErrNoRows) {
 			return nil, errNotFound
@@ -66,9 +67,9 @@ func (r *repositoryImpl) getByEmail(ctx context.Context, email string) (*Human,
 func (r *repositoryImpl) getByID(ctx context.Context, id string) (*Human, error) {
 	var h Human
 	err := r.pool.QueryRow(ctx,
-		`SELECT id, email, email_notifications_enabled, last_email_notification_sent_at, created_at FROM humans WHERE id = $1`,
+		`SELECT id, email, email_notifications_enabled, last_email_notification_sent_at, created_at, avatar_object_id FROM humans WHERE id = $1`,
 		id,
-	).Scan(&h.ID, &h.Email, &h.EmailNotificationsEnabled, &h.LastEmailNotificationSentAt, &h.CreatedAt)
+	).Scan(&h.ID, &h.Email, &h.EmailNotificationsEnabled, &h.LastEmailNotificationSentAt, &h.CreatedAt, &h.AvatarObjectID)
 	if err != nil {
 		if errors.Is(err, pgx.ErrNoRows) {
 			return nil, errNotFound
@@ -113,7 +114,7 @@ func (r *repositoryImpl) exists(ctx context.Context, email string) (bool, error)
 
 func (r *repositoryImpl) listAll(ctx context.Context) ([]*Human, error) {
 	rows, err := r.pool.Query(ctx,
-		`SELECT id, email, email_notifications_enabled, last_email_notification_sent_at, created_at FROM humans`,
+		`SELECT id, email, email_notifications_enabled, last_email_notification_sent_at, created_at, avatar_object_id FROM humans`,
 	)
 	if err != nil {
 		return nil, err
@@ -123,7 +124,7 @@ func (r *repositoryImpl) listAll(ctx context.Context) ([]*Human, error) {
 	var humans []*Human
 	for rows.Next() {
 		var h Human
-		if err := rows.Scan(&h.ID, &h.Email, &h.EmailNotificationsEnabled, &h.LastEmailNotificationSentAt, &h.CreatedAt); err != nil {
+		if err := rows.Scan(&h.ID, &h.Email, &h.EmailNotificationsEnabled, &h.LastEmailNotificationSentAt, &h.CreatedAt, &h.AvatarObjectID); err != nil {
 			return nil, err
 		}
 		h.EmailPrefix = emailPrefix(h.Email)
@@ -159,3 +160,17 @@ func (r *repositoryImpl) updateLastEmailNotificationSentAt(ctx context.Context,
 	}
 	return nil
 }
+
+func (r *repositoryImpl) updateAvatarObjectID(ctx context.Context, id string, objectID *string) error {
+	result, err := r.pool.Exec(ctx,
+		`UPDATE humans SET avatar_object_id = $2 WHERE id = $1`,
+		id, objectID,
+	)
+	if err != nil {
+		return err
+	}
+	if result.RowsAffected() == 0 {
+		return errNotFound
+	}
+	return nil
+}

go/internal/human/service.go

@@ -11,7 +11,10 @@ import (
 
 //go:generate go tool mockgen -source ./service.go -destination ./mocks/service.go
 
-var ErrNotFound = errors.New("human not found")
+var (
+	ErrNotFound     = errors.New("human not found")
+	ErrInvalidParam = errors.New("invalid param")
+)
 
 type Service interface {
 	GetOrCreateByEmail(ctx context.Context, email string) (*Human, error)
@@ -22,6 +25,8 @@ type Service interface {
 	ListAll(ctx context.Context) ([]*Human, error)
 	UpdateEmailNotificationsEnabled(ctx context.Context, id string, enabled bool) error
 	UpdateLastEmailNotificationSentAt(ctx context.Context, id string, t time.Time) error
+	UpdateAvatar(ctx context.Context, id string, objectID string) error
+	DeleteAvatar(ctx context.Context, id string) error
 }
 
 type serviceImpl struct {
@@ -88,3 +93,22 @@ func (s *serviceImpl) UpdateLastEmailNotificationSentAt(ctx context.Context, id
 	}
 	return err
 }
+
+func (s *serviceImpl) UpdateAvatar(ctx context.Context, id string, objectID string) error {
+	if objectID == "" {
+		return ErrInvalidParam
+	}
+	err := s.repo.updateAvatarObjectID(ctx, id, utils.CreateOptionalString(objectID))
+	if errors.Is(err, errNotFound) {
+		return ErrNotFound
+	}
+	return err
+}
+
+func (s *serviceImpl) DeleteAvatar(ctx context.Context, id string) error {
+	err := s.repo.updateAvatarObjectID(ctx, id, nil)
+	if errors.Is(err, errNotFound) {
+		return ErrNotFound
+	}
+	return err
+}

go/internal/human/service_test.go

@@ -56,4 +56,19 @@ func TestHumanService(t *testing.T) {
 	assert.NotEqual(t, createdHuman.ID, anotherHuman.ID)
 	assert.Equal(t, "another@example.com", anotherHuman.Email)
 	assert.Equal(t, "another", anotherHuman.EmailPrefix)
+
+	// Test avatar handling
+	objectID := "obj_xxx"
+	err = svc.UpdateAvatar(ctx, anotherHuman.ID, objectID)
+	assert.NoError(t, err)
+
+	anotherHuman, err = svc.GetByID(ctx, anotherHuman.ID)
+	assert.NoError(t, err)
+	assert.Equal(t, objectID, *anotherHuman.AvatarObjectID)
+
+	err = svc.DeleteAvatar(ctx, anotherHuman.ID)
+	assert.NoError(t, err)
+	anotherHuman, err = svc.GetByID(ctx, anotherHuman.ID)
+	assert.NoError(t, err)
+	assert.Nil(t, anotherHuman.AvatarObjectID)
 }

go/migrations/000017_human_avatar.down.sql

@@ -0,0 +1,6 @@
+BEGIN;
+
+ALTER TABLE humans
+  DROP COLUMN IF EXISTS avatar_object_id;
+
+COMMIT;

go/migrations/000017_human_avatar.up.sql

@@ -0,0 +1,6 @@
+BEGIN;
+
+ALTER TABLE humans
+  ADD COLUMN IF NOT EXISTS avatar_object_id TEXT NULL;
+
+COMMIT;

js/desktop/src/api/client.ts

@@ -42,16 +42,12 @@ class ApiClient {
     this.config = config;
   }
 
-  private async fetch(
+  private async send(
     method: string,
     path: string,
-    body?: unknown,
+    init: { headers?: Record<string, string>; body?: BodyInit } = {},
   ): Promise<Response> {
-    const headers: Record<string, string> = {};
-
-    if (body) {
-      headers['Content-Type'] = 'application/json';
-    }
+    const headers: Record<string, string> = { ...init.headers };
 
     const token = this.config.getToken();
     if (token) {
@@ -61,7 +57,7 @@ class ApiClient {
     const response = await fetch(`${this.config.baseUrl}${path}`, {
       method,
       headers,
-      body: body ? JSON.stringify(body) : undefined,
+      body: init.body,
     });
 
     if (response.status === 401) {
@@ -77,6 +73,17 @@ class ApiClient {
     return response;
   }
 
+  private async fetch(
+    method: string,
+    path: string,
+    body?: unknown,
+  ): Promise<Response> {
+    return this.send(method, path, {
+      headers: body ? { 'Content-Type': 'application/json' } : undefined,
+      body: body ? JSON.stringify(body) : undefined,
+    });
+  }
+
   private async request<T>(
     schema: z.ZodType<T>,
     method: string,
@@ -137,6 +144,25 @@ class ApiClient {
     await this.requestVoid('PATCH', '/humans/me/settings', data);
   }
 
+  // --- Avatar ---
+
+  async updateAvatar(blob: Blob): Promise<void> {
+    await this.send('PUT', '/humans/me/avatar', {
+      headers: { 'Content-Type': blob.type || 'image/jpeg' },
+      body: blob,
+    });
+  }
+
+  async deleteAvatar(): Promise<void> {
+    await this.requestVoid('DELETE', '/humans/me/avatar');
+  }
+
+  async getAvatarDownloadUrl(objectId: string): Promise<string> {
+    const response = await this.fetch('GET', `/humans/avatar/${objectId}`);
+    const data = await response.json();
+    return data.url;
+  }
+
   // --- Depot ---
 
   async prepareUpload(data: PrepareUploadRequest) {

js/desktop/src/api/types.ts

@@ -6,6 +6,7 @@ export const HumanSchema = z.object({
   email: z.string().email(),
   email_prefix: z.string(),
   email_notifications_enabled: z.boolean(),
+  avatar_object_id: z.string().nullable().optional(),
 });
 
 export type Human = z.infer<typeof HumanSchema>;

js/desktop/src/components/audio/audio-level-bars.tsx

@@ -1,122 +0,0 @@
-import { useEffect, useRef } from 'react';
-
-interface AudioLevelBarsProps {
-  sourceNode: AudioNode;
-}
-
-const BAR_COUNT = 3;
-const MIN_HEIGHT_PX = 6;
-const MAX_HEIGHT_PX = 48;
-
-// dB scale
-const NOISE_FLOOR_DB = -50;
-const DB_RANGE = -NOISE_FLOOR_DB; // 50dB dynamic range
-
-// Asymmetric smoothing time constants
-const ATTACK_MS = 30;
-const RELEASE_MS = 300;
-
-// Bar activation thresholds on the 0..1 normalized dB scale
-const BAR_THRESHOLDS = [0.0, 0.15, 0.35];
-
-/**
- * 3-bar VU meter that visualizes audio levels from any AudioNode source.
- * Works with both live MediaStream sources and MediaElement sources.
- *
- * Uses direct DOM manipulation with exponential smoothing on a dB scale
- * for smooth, jitter-free animation independent of frame rate.
- */
-export function AudioLevelBars({ sourceNode }: AudioLevelBarsProps) {
-  const barRefs = useRef<(HTMLDivElement | null)[]>([]);
-
-  useEffect(() => {
-    const ctx = sourceNode.context as AudioContext;
-    const analyser = ctx.createAnalyser();
-    analyser.fftSize = 256;
-    sourceNode.connect(analyser);
-
-    // Connect to destination via silent gain node — without this,
-    // Chromium suspends processing on disconnected audio graphs.
-    const silentGain = ctx.createGain();
-    silentGain.gain.value = 0;
-    analyser.connect(silentGain);
-    silentGain.connect(ctx.destination);
-
-    const dataArray = new Uint8Array(analyser.frequencyBinCount);
-
-    let smoothedLevel = 0;
-    let lastTime = performance.now();
-    let rafId = 0;
-
-    function tick() {
-      const now = performance.now();
-      const dt = now - lastTime;
-      lastTime = now;
-
-      analyser.getByteTimeDomainData(dataArray);
-
-      // Compute RMS of waveform (128 = silence baseline)
-      let sumSquares = 0;
-      for (let i = 0; i < dataArray.length; i++) {
-        const normalized = (dataArray[i] - 128) / 128;
-        sumSquares += normalized * normalized;
-      }
-      const rms = Math.sqrt(sumSquares / dataArray.length);
-
-      // Convert to dB, clamp to noise floor, normalize to 0..1
-      const db = rms > 0 ? 20 * Math.log10(rms) : NOISE_FLOOR_DB;
-      const normalizedDb = Math.max(0, (db - NOISE_FLOOR_DB) / DB_RANGE);
-
-      // Asymmetric exponential smoothing (frame-rate independent)
-      const timeConstant =
-        normalizedDb > smoothedLevel ? ATTACK_MS : RELEASE_MS;
-      const alpha = 1 - Math.exp(-dt / timeConstant);
-      smoothedLevel += alpha * (normalizedDb - smoothedLevel);
-
-      // Update bar heights via direct DOM writes
-      for (let i = 0; i < BAR_COUNT; i++) {
-        const el = barRefs.current[i];
-        if (!el) continue;
-
-        const threshold = BAR_THRESHOLDS[i];
-        const barLevel =
-          smoothedLevel <= threshold
-            ? 0
-            : Math.min(1, (smoothedLevel - threshold) / (1 - threshold));
-        const height =
-          MIN_HEIGHT_PX + barLevel * (MAX_HEIGHT_PX - MIN_HEIGHT_PX);
-        el.style.height = `${height}px`;
-      }
-
-      rafId = requestAnimationFrame(tick);
-    }
-
-    rafId = requestAnimationFrame(tick);
-
-    return () => {
-      cancelAnimationFrame(rafId);
-      try {
-        sourceNode.disconnect(analyser);
-        analyser.disconnect(silentGain);
-        silentGain.disconnect(ctx.destination);
-      } catch {
-        // Nodes may already be disconnected
-      }
-    };
-  }, [sourceNode]);
-
-  return (
-    <div className="flex items-end gap-1.5">
-      {Array.from({ length: BAR_COUNT }, (_, i) => (
-        <div
-          key={i}
-          ref={(el) => {
-            barRefs.current[i] = el;
-          }}
-          className="w-1.5 rounded-full bg-green-400"
-          style={{ height: `${MIN_HEIGHT_PX}px` }}
-        />
-      ))}
-    </div>
-  );
-}

js/desktop/src/components/audio/centered-waveform.tsx

@@ -0,0 +1,213 @@
+import { useEffect, useRef } from 'react';
+
+interface CenteredWaveformProps {
+  sourceNode: AudioNode;
+  /** Canvas size in CSS pixels. */
+  width?: number;
+  height?: number;
+  barWidth?: number;
+  gap?: number;
+  /** Bars are drawn with currentColor — set a text-* class to color them. */
+  className?: string;
+}
+
+// Voice band fanned out from the center bar (lows) to the edges (highs).
+const MIN_FREQ_HZ = 100;
+const MAX_FREQ_HZ = 4500;
+
+// Analyser dB range mapped onto bar height; the defaults (-100/-30) waste
+// most of the range on inaudible levels.
+const MIN_DB = -75;
+const MAX_DB = -25;
+
+// Per-bar asymmetric smoothing time constants.
+const ATTACK_MS = 40;
+const RELEASE_MS = 220;
+
+// Edge bars keep a fraction of their response so the whole row stays alive
+// instead of only the middle moving.
+const EDGE_RESPONSE = 0.3;
+
+/**
+ * Centered live voice indicator, like a meeting app's "speaking" glyph.
+ * Bars fan out symmetrically from the middle: the center tracks the low
+ * frequencies where voice energy lives, the edges track the highs, and a
+ * cosine envelope tapers the response so the shape blooms from the center
+ * while someone speaks and settles into a dot line in silence.
+ *
+ * Renders on canvas with an rAF loop and no React state. No reduced-motion
+ * branch: the animation is signal-bearing audio feedback, not decoration,
+ * and only runs while audio is being captured or played.
+ */
+export function CenteredWaveform({
+  sourceNode,
+  width = 168,
+  height = 56,
+  barWidth = 4,
+  gap = 4,
+  className,
+}: CenteredWaveformProps) {
+  const canvasRef = useRef<HTMLCanvasElement | null>(null);
+
+  useEffect(() => {
+    const canvasEl = canvasRef.current;
+    const ctx2d = canvasEl?.getContext('2d');
+    if (!canvasEl || !ctx2d) return;
+    // Rebind post-guard so the narrowed types carry into the closures below.
+    const canvas = canvasEl;
+    const drawCtx = ctx2d;
+
+    const { analyser, detach } = attachAnalyser(sourceNode, 512);
+    analyser.smoothingTimeConstant = 0.8;
+    analyser.minDecibels = MIN_DB;
+    analyser.maxDecibels = MAX_DB;
+
+    const bins = new Uint8Array(analyser.frequencyBinCount);
+
+    const stride = barWidth + gap;
+    // Odd count so one bar sits exactly at the center.
+    let barCount = Math.floor((width + gap) / stride);
+    if (barCount % 2 === 0) barCount -= 1;
+    const half = (barCount - 1) / 2;
+
+    // Map bar k (0 = center) to a frequency bin, log-spaced so the busy low
+    // end of the voice spectrum spreads across several bars.
+    const binHz = sourceNode.context.sampleRate / analyser.fftSize;
+    const binIndex = new Uint16Array(half + 1);
+    for (let k = 0; k <= half; k++) {
+      const freq =
+        MIN_FREQ_HZ *
+        Math.pow(MAX_FREQ_HZ / MIN_FREQ_HZ, half === 0 ? 0 : k / half);
+      binIndex[k] = Math.min(bins.length - 1, Math.round(freq / binHz));
+    }
+
+    const levels = new Float32Array(half + 1);
+
+    const ensureBackingStore = createBackingStoreScaler(
+      canvas,
+      drawCtx,
+      width,
+      height,
+    );
+    // currentColor, cached and refreshed periodically (theme switches show
+    // within 200ms) instead of paying a computed-style read every frame.
+    let fillColor = '';
+    let lastColorTime = 0;
+    let lastTime = performance.now();
+    let rafId = 0;
+
+    function tick() {
+      const now = performance.now();
+      const dt = now - lastTime;
+      lastTime = now;
+
+      analyser.getByteFrequencyData(bins);
+
+      for (let k = 0; k <= half; k++) {
+        const raw = bins[binIndex[k]] / 255;
+        const envelope =
+          half === 0
+            ? 1
+            : EDGE_RESPONSE +
+              (1 - EDGE_RESPONSE) * Math.cos(((k / half) * Math.PI) / 2);
+        // Gamma keeps the floor quiet so silence reads as a dot line.
+        const target = Math.pow(raw, 1.4) * envelope;
+
+        // Asymmetric exponential smoothing (frame-rate independent)
+        const timeConstant = target > levels[k] ? ATTACK_MS : RELEASE_MS;
+        const alpha = 1 - Math.exp(-dt / timeConstant);
+        levels[k] += alpha * (target - levels[k]);
+      }
+
+      if (ensureBackingStore() || !fillColor || now - lastColorTime > 200) {
+        fillColor = getComputedStyle(canvas).color;
+        lastColorTime = now;
+      }
+      drawCtx.clearRect(0, 0, width, height);
+      drawCtx.fillStyle = fillColor;
+
+      const centerX = width / 2 - barWidth / 2;
+      drawCtx.beginPath();
+      for (let k = 0; k <= half; k++) {
+        const h = Math.max(barWidth, levels[k] * height);
+        const y = (height - h) / 2;
+        drawCtx.roundRect(centerX + k * stride, y, barWidth, h, barWidth / 2);
+        if (k > 0) {
+          drawCtx.roundRect(centerX - k * stride, y, barWidth, h, barWidth / 2);
+        }
+      }
+      drawCtx.fill();
+
+      rafId = requestAnimationFrame(tick);
+    }
+
+    rafId = requestAnimationFrame(tick);
+
+    return () => {
+      cancelAnimationFrame(rafId);
+      detach();
+    };
+  }, [sourceNode, width, height, barWidth, gap]);
+
+  return (
+    <canvas ref={canvasRef} className={className} style={{ width, height }} />
+  );
+}
+
+/**
+ * Connects an AnalyserNode to the source for visualization.
+ *
+ * The analyser is routed to the destination via a silent gain node — without
+ * this, Chromium suspends processing on disconnected audio graphs.
+ */
+function attachAnalyser(
+  sourceNode: AudioNode,
+  fftSize: number,
+): { analyser: AnalyserNode; detach: () => void } {
+  const ctx = sourceNode.context;
+  const analyser = ctx.createAnalyser();
+  analyser.fftSize = fftSize;
+  sourceNode.connect(analyser);
+
+  const silentGain = ctx.createGain();
+  silentGain.gain.value = 0;
+  analyser.connect(silentGain);
+  silentGain.connect(ctx.destination);
+
+  return {
+    analyser,
+    detach() {
+      try {
+        sourceNode.disconnect(analyser);
+        analyser.disconnect(silentGain);
+        silentGain.disconnect(ctx.destination);
+      } catch {
+        // Nodes may already be disconnected
+      }
+    },
+  };
+}
+
+/**
+ * Keeps the canvas backing store sized to width × height CSS pixels at the
+ * current devicePixelRatio, rescaling if the DPR changes (window moved
+ * between monitors). Call the returned function each frame; it returns true
+ * when the store was (re)initialized so callers can refresh cached state.
+ */
+function createBackingStoreScaler(
+  canvas: HTMLCanvasElement,
+  drawCtx: CanvasRenderingContext2D,
+  width: number,
+  height: number,
+): () => boolean {
+  let dpr = 0;
+  return () => {
+    const currentDpr = window.devicePixelRatio || 1;
+    if (currentDpr === dpr) return false;
+    dpr = currentDpr;
+    canvas.width = Math.round(width * dpr);
+    canvas.height = Math.round(height * dpr);
+    drawCtx.setTransform(dpr, 0, 0, dpr, 0, 0);
+    return true;
+  };
+}

js/desktop/src/components/human-avatar.tsx

@@ -0,0 +1,36 @@
+import * as React from 'react';
+import { Avatar, AvatarFallback, AvatarImage } from '@/components/ui/avatar';
+import { useAvatarUrl } from '@/hooks/use-avatar-url';
+
+interface HumanAvatarProps extends Omit<
+  React.ComponentProps<typeof Avatar>,
+  'children'
+> {
+  /** Object id of the human's profile picture, if any. */
+  avatarObjectId?: string | null;
+  /** Initials rendered while loading or when no picture is set. */
+  initials: string;
+  /** Extra classes for the initials fallback. */
+  fallbackClassName?: string;
+}
+
+/**
+ * Renders a human's avatar: their profile picture when set (resolved to a
+ * signed URL), otherwise their initials. The fallback also shows while the
+ * image loads or if it fails, so this is a drop-in for the initials-only
+ * <Avatar> usages throughout the app.
+ */
+export function HumanAvatar({
+  avatarObjectId,
+  initials,
+  fallbackClassName,
+  ...props
+}: HumanAvatarProps) {
+  const url = useAvatarUrl(avatarObjectId);
+  return (
+    <Avatar {...props}>
+      {url && <AvatarImage src={url} alt={initials} />}
+      <AvatarFallback className={fallbackClassName}>{initials}</AvatarFallback>
+    </Avatar>
+  );
+}

js/desktop/src/features/compose/recording-overlay.tsx

@@ -1,7 +1,7 @@
 import { useEffect, useRef, useState } from 'react';
 import { Paperclip } from 'lucide-react';
-import type { RecordingMode } from '@/hooks/use-recording-mode';
-import { AudioLevelBars } from '@/components/audio/audio-level-bars';
+import type { RecordingMode } from '@/stores/media-settings-store';
+import { CenteredWaveform } from '@/components/audio/centered-waveform';
 import { useAudioSource } from '@/components/audio/use-audio-source';
 import { useObjectUrl } from '@/hooks/use-object-url';
 import { AttachmentStrip } from '@/features/compose/attachment-strip';
@@ -68,7 +68,6 @@ function ReviewPlayback({
   objectFit?: 'cover' | 'contain';
 }) {
   const objectUrl = useObjectUrl(blob);
-  const audioElRef = useRef<HTMLAudioElement | null>(null);
   const [audioEl, setAudioEl] = useState<HTMLAudioElement | null>(null);
   const audioSource = useAudioSource(isVideo ? null : audioEl);
 
@@ -88,17 +87,12 @@ function ReviewPlayback({
 
   return (
     <div className="flex flex-col items-center gap-3">
-      <audio
-        ref={(el) => {
-          audioElRef.current = el;
-          setAudioEl(el);
-        }}
-        src={objectUrl}
-        autoPlay
-        loop
-      />
+      <audio ref={setAudioEl} src={objectUrl} autoPlay loop />
       {audioSource ? (
-        <AudioLevelBars sourceNode={audioSource.sourceNode} />
+        <CenteredWaveform
+          sourceNode={audioSource.sourceNode}
+          className="text-white"
+        />
       ) : (
         <span className="text-sm text-white/60">Playing back audio...</span>
       )}
@@ -199,10 +193,13 @@ export function RecordingOverlay({
         ) : null}
       </div>
 
-      {/* Bottom center: audio level bars (recording with active stream) */}
+      {/* Bottom center: live waveform (recording with active stream) */}
       {isRecording && recordingAudioSource && (
         <div className="z-10 absolute bottom-15">
-          <AudioLevelBars sourceNode={recordingAudioSource.sourceNode} />
+          <CenteredWaveform
+            sourceNode={recordingAudioSource.sourceNode}
+            className="text-white"
+          />
         </div>
       )}
 

js/desktop/src/features/compose/use-recorder.ts

@@ -1,5 +1,5 @@
 import { useCallback, useEffect, useRef } from 'react';
-import type { RecordingMode } from '@/hooks/use-recording-mode';
+import type { RecordingMode } from '@/stores/media-settings-store';
 
 const VIDEO_PREFERRED_MIME = 'video/webm;codecs=vp9,opus';
 const VIDEO_FALLBACK_MIME = 'video/webm';

js/desktop/src/features/network-selector.tsx

@@ -137,7 +137,7 @@ function CreateNetworkDialog({
       toast.success(`Created ${network.name}`);
       onOpenChange(false);
       setName('');
-      navigate(`/${network.id}/settings`);
+      navigate(`/${network.id}/settings?section=members&add=1`);
     },
   });
 

js/desktop/src/features/network-settings.tsx

@@ -1,27 +1,38 @@
-import { useEffect, useRef, useState } from 'react';
+import { useEffect, useState } from 'react';
 import { useNavigate, useParams, useSearchParams } from 'react-router-dom';
-import { ArrowLeft, CreditCard, Mail, Shield, Users, X } from 'lucide-react';
+import {
+  ArrowLeft,
+  CreditCard,
+  Mail,
+  Shield,
+  UserPlus,
+  Users,
+  X,
+} from 'lucide-react';
 import { toast } from 'sonner';
 import { Avatar, AvatarFallback } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
-import { Input } from '@/components/ui/input';
 import { ScrollArea } from '@/components/ui/scroll-area';
 import { Separator } from '@/components/ui/separator';
+import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
 import { Muted } from '@/components/ui/typography';
 import { WindowControls } from '@/components/window-controls';
 import { useNetworks } from '@/hooks/use-networks';
 import {
   useNetworkInvitations,
-  useInviteMembers,
   useRevokeInvitation,
   useRemoveMember,
 } from '@/hooks/use-member-management';
 import { useAuthStore } from '@/stores/auth-store';
 import { BillingSection } from '@/features/network-billing';
+import { AddMembersDialog } from '@/features/network-settings/add-members-dialog';
 import { ConfirmDestructiveOverlay } from '@/components/confirm-destructive-overlay';
 import type { Human } from '@/api/types';
 
+type Section = 'members' | 'billing';
+
 function MemberRow({
   human,
   isAdmin,
@@ -35,11 +46,11 @@ function MemberRow({
 
   return (
     <div className="flex w-full items-center gap-3 px-4 py-3">
-      <Avatar>
-        <AvatarFallback className="bg-primary/10 text-primary font-medium">
-          {initials}
-        </AvatarFallback>
-      </Avatar>
+      <HumanAvatar
+        avatarObjectId={human.avatar_object_id}
+        initials={initials}
+        fallbackClassName="bg-primary/10 text-primary font-medium"
+      />
       <div className="min-w-0 flex-1">
         <p className="truncate text-sm font-medium">{human.email_prefix}</p>
         <Muted className="text-xs">{human.email}</Muted>
@@ -65,43 +76,6 @@ function MemberRow({
   );
 }
 
-function InviteForm({ networkId }: { networkId: string }) {
-  const [email, setEmail] = useState('');
-  const inviteMembers = useInviteMembers(networkId);
-
-  const handleSubmit = (e: React.FormEvent) => {
-    e.preventDefault();
-    const trimmed = email.trim();
-    if (!trimmed) return;
-
-    inviteMembers.mutate([trimmed], {
-      onSuccess: () => {
-        toast.success(`Invitation sent to ${trimmed}`);
-        setEmail('');
-      },
-    });
-  };
-
-  return (
-    <form onSubmit={handleSubmit} className="flex items-center gap-2 px-4 py-3">
-      <Input
-        type="email"
-        placeholder="name@example.com"
-        value={email}
-        onChange={(e) => setEmail(e.target.value)}
-        className="flex-1"
-      />
-      <Button
-        type="submit"
-        size="sm"
-        disabled={!email.trim() || inviteMembers.isPending}
-      >
-        {inviteMembers.isPending ? 'Sending...' : 'Invite'}
-      </Button>
-    </form>
-  );
-}
-
 function PendingInvitationRow({
   email,
   networkId,
@@ -141,36 +115,38 @@ function PendingInvitationRow({
   );
 }
 
-function SectionHeader({
-  icon,
+function SectionHeading({
   title,
   description,
-  trailing,
+  count,
+  action,
 }: {
-  icon: React.ReactNode;
   title: string;
   description?: string;
-  trailing?: React.ReactNode;
+  count?: number;
+  action?: React.ReactNode;
 }) {
   return (
-    <div className="flex items-start gap-3 px-4 pb-2 pt-6">
-      <span className="text-muted-foreground mt-0.5 flex size-4 items-center justify-center">
-        {icon}
-      </span>
-      <div className="min-w-0 flex-1">
+    <div className="mb-3 flex items-start justify-between gap-3">
+      <div className="min-w-0">
         <div className="flex items-center gap-2">
-          <h2 className="text-sm font-semibold tracking-tight">{title}</h2>
-          {trailing}
+          <h2 className="text-base font-semibold tracking-tight">{title}</h2>
+          {count != null && (
+            <Badge variant="secondary" className="tabular-nums">
+              {count}
+            </Badge>
+          )}
         </div>
-        {description && <Muted className="text-xs">{description}</Muted>}
+        {description && <Muted className="mt-0.5 text-xs">{description}</Muted>}
       </div>
+      {action}
     </div>
   );
 }
 
-function Section({ children }: { children: React.ReactNode }) {
+function Panel({ children }: { children: React.ReactNode }) {
   return (
-    <section className="bg-card/40 mx-4 mb-2 overflow-hidden rounded-lg border">
+    <section className="bg-card/40 overflow-hidden rounded-lg border">
       {children}
     </section>
   );
@@ -181,7 +157,7 @@ export default function NetworkSettingsPage() {
   const { networkId } = useParams<{ networkId: string }>();
   if (!networkId)
     throw new Error('NetworkSettingsPage requires a :networkId route param');
-  const [searchParams] = useSearchParams();
+  const [searchParams, setSearchParams] = useSearchParams();
   const { data: networks } = useNetworks();
   const network = networks?.find((n) => n.id === networkId);
   const { data: invitations, error: invitationsError } =
@@ -189,18 +165,35 @@ export default function NetworkSettingsPage() {
   const currentUser = useAuthStore((s) => s.user);
   const isAdmin = currentUser?.id === network?.admin_human.id;
   const [memberToRemove, setMemberToRemove] = useState<Human | null>(null);
+  // Onboarding: opening settings with `?add=1` (e.g. right after creating a
+  // network) starts with the Add members dialog open. Non-admins never render
+  // the dialog, so the initial value is harmless for them.
+  const [addOpen, setAddOpen] = useState(() => searchParams.get('add') === '1');
   const removeMember = useRemoveMember(networkId);
 
-  const billingRef = useRef<HTMLDivElement>(null);
+  const section: Section =
+    searchParams.get('section') === 'billing' ? 'billing' : 'members';
 
+  const setSection = (value: string) => {
+    const next = new URLSearchParams(searchParams);
+    if (value === 'billing') next.set('section', value);
+    else next.delete('section');
+    setSearchParams(next, { replace: true });
+  };
+
+  // Strip the one-shot `add` param so the dialog doesn't reopen on refresh or
+  // back navigation. The initial open state was already captured above.
   useEffect(() => {
-    if (searchParams.get('section') === 'billing') {
-      billingRef.current?.scrollIntoView({
-        behavior: 'smooth',
-        block: 'start',
-      });
-    }
-  }, [searchParams]);
+    if (searchParams.get('add') !== '1') return;
+    setSearchParams(
+      (prev) => {
+        const next = new URLSearchParams(prev);
+        next.delete('add');
+        return next;
+      },
+      { replace: true },
+    );
+  }, [setSearchParams, searchParams]);
 
   const networkName = network?.name ?? 'Network';
   const memberCount = network?.humans.length ?? 0;
@@ -223,121 +216,136 @@ export default function NetworkSettingsPage() {
         <div className="flex-1" />
       </div>
 
-      <ScrollArea className="min-h-0 flex-1">
-        <div className="flex items-center gap-3 px-4 pb-4 pt-6">
-          <Avatar size="lg">
-            <AvatarFallback className="bg-primary/10 text-primary font-medium">
-              {networkInitials}
-            </AvatarFallback>
-          </Avatar>
-          <div className="min-w-0 flex-1">
-            <p className="truncate text-base font-semibold">{networkName}</p>
-            <Muted className="text-xs">
-              {memberCount} {memberCount === 1 ? 'member' : 'members'}
-              {isAdmin ? " · You're an admin" : ''}
-            </Muted>
+      <Tabs
+        value={section}
+        onValueChange={setSection}
+        orientation="vertical"
+        className="min-h-0 flex-1 gap-0"
+      >
+        <aside className="flex w-52 shrink-0 flex-col gap-4 border-r p-3">
+          <div className="flex items-center gap-3 px-1 pt-1">
+            <Avatar>
+              <AvatarFallback className="bg-primary/10 text-primary font-medium">
+                {networkInitials}
+              </AvatarFallback>
+            </Avatar>
+            <div className="min-w-0 flex-1">
+              <p className="truncate text-sm font-semibold">{networkName}</p>
+              <Muted className="text-xs">
+                {memberCount} {memberCount === 1 ? 'member' : 'members'}
+              </Muted>
+            </div>
           </div>
-        </div>
+          <TabsList variant="line" className="w-full gap-1">
+            <TabsTrigger value="members">
+              <Users />
+              Members
+            </TabsTrigger>
+            <TabsTrigger value="billing">
+              <CreditCard />
+              Plan & Billing
+            </TabsTrigger>
+          </TabsList>
+        </aside>
 
-        <Section>
-          <SectionHeader
-            icon={<Users className="size-4" />}
-            title="Members"
-            description="People with access to this network."
-            trailing={
-              <Badge variant="secondary" className="tabular-nums">
-                {memberCount}
-              </Badge>
-            }
-          />
-          <Separator />
-          {network?.humans.map((human, index) => {
-            const isRowAdmin = human.id === network.admin_human.id;
-            const canRemove =
-              isAdmin && !isRowAdmin && human.id !== currentUser?.id;
-            return (
-              <div key={human.id}>
-                <MemberRow
-                  human={human}
-                  isAdmin={isRowAdmin}
-                  onRemove={
-                    canRemove ? () => setMemberToRemove(human) : undefined
-                  }
-                />
-                {index < network.humans.length - 1 && (
-                  <Separator className="mx-4" />
-                )}
-              </div>
-            );
-          })}
-        </Section>
-
-        {isAdmin && network && (
-          <Section>
-            <SectionHeader
-              icon={<Mail className="size-4" />}
-              title="Invitations"
-              description="Invite teammates by email. They'll get a link to join."
-              trailing={
-                pendingCount > 0 ? (
-                  <Badge variant="secondary" className="tabular-nums">
-                    {pendingCount} pending
-                  </Badge>
+        <ScrollArea className="min-h-0 flex-1">
+          <TabsContent value="members" className="p-4">
+            <SectionHeading
+              title="Members"
+              description="People with access to this network."
+              count={memberCount}
+              action={
+                isAdmin ? (
+                  <Button
+                    size="sm"
+                    className="shrink-0"
+                    onClick={() => setAddOpen(true)}
+                  >
+                    <UserPlus className="mr-1 size-3.5" />
+                    Add members
+                  </Button>
                 ) : undefined
               }
             />
-            <Separator />
-            <InviteForm networkId={networkId} />
-            {invitationsError && (
-              <>
-                <Separator />
-                <p className="text-muted-foreground px-4 py-3 text-xs">
-                  Couldn't load pending invitations.
-                </p>
-              </>
-            )}
-            {invitations && invitations.length > 0 && (
-              <>
-                <Separator />
-                <div className="px-4 pb-1 pt-3">
-                  <Muted className="text-xs font-medium uppercase tracking-wider">
-                    Pending
-                  </Muted>
-                </div>
-                {invitations.map((inv, index) => (
-                  <div key={inv.email}>
-                    <PendingInvitationRow
-                      email={inv.email}
-                      networkId={networkId}
+            <Panel>
+              {network?.humans.map((human, index) => {
+                const isRowAdmin = human.id === network.admin_human.id;
+                const canRemove =
+                  isAdmin && !isRowAdmin && human.id !== currentUser?.id;
+                return (
+                  <div key={human.id}>
+                    <MemberRow
+                      human={human}
+                      isAdmin={isRowAdmin}
+                      onRemove={
+                        canRemove ? () => setMemberToRemove(human) : undefined
+                      }
                     />
-                    {index < invitations.length - 1 && (
+                    {index < network.humans.length - 1 && (
                       <Separator className="mx-4" />
                     )}
                   </div>
-                ))}
-              </>
-            )}
-          </Section>
-        )}
+                );
+              })}
+            </Panel>
 
-        <div ref={billingRef}>
-          <Section>
-            <SectionHeader
-              icon={<CreditCard className="size-4" />}
-              title="Billing"
+            {isAdmin && (
+              <div className="mt-6">
+                <SectionHeading
+                  title="Pending invitations"
+                  description="Invites that haven't been accepted yet."
+                  count={pendingCount > 0 ? pendingCount : undefined}
+                />
+                {invitationsError ? (
+                  <Panel>
+                    <p className="text-muted-foreground px-4 py-3 text-xs">
+                      Couldn't load pending invitations.
+                    </p>
+                  </Panel>
+                ) : invitations && invitations.length > 0 ? (
+                  <Panel>
+                    {invitations.map((inv, index) => (
+                      <div key={inv.email}>
+                        <PendingInvitationRow
+                          email={inv.email}
+                          networkId={networkId}
+                        />
+                        {index < invitations.length - 1 && (
+                          <Separator className="mx-4" />
+                        )}
+                      </div>
+                    ))}
+                  </Panel>
+                ) : (
+                  <Muted className="text-xs">No pending invitations.</Muted>
+                )}
+              </div>
+            )}
+          </TabsContent>
+
+          <TabsContent value="billing" className="p-4">
+            <SectionHeading
+              title="Plan & Billing"
               description={
                 isAdmin
                   ? 'Manage your plan, seats, and payment.'
                   : "Your network's current plan and usage."
               }
             />
-            <Separator />
-            <BillingSection networkId={networkId} />
-          </Section>
-        </div>
+            <Panel>
+              <BillingSection networkId={networkId} />
+            </Panel>
+          </TabsContent>
+        </ScrollArea>
+      </Tabs>
 
-        <div className="h-6" />
-      </ScrollArea>
+      {isAdmin && (
+        <AddMembersDialog
+          networkId={networkId}
+          open={addOpen}
+          onOpenChange={setAddOpen}
+        />
+      )}
 
       {memberToRemove && (
         <ConfirmDestructiveOverlay

js/desktop/src/features/network-settings/add-members-dialog.tsx

@@ -0,0 +1,179 @@
+import { useState } from 'react';
+import { X } from 'lucide-react';
+import { toast } from 'sonner';
+import { z } from 'zod';
+import { Button } from '@/components/ui/button';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import { Input } from '@/components/ui/input';
+import { Muted } from '@/components/ui/typography';
+import { useInviteMembers } from '@/hooks/use-member-management';
+
+const emailSchema = z.string().email();
+
+function EmailChip({
+  email,
+  onRemove,
+}: {
+  email: string;
+  onRemove: () => void;
+}) {
+  return (
+    <span className="bg-secondary text-secondary-foreground inline-flex items-center gap-1 rounded-md py-0.5 pl-2 pr-1 text-xs">
+      {email}
+      <Button
+        type="button"
+        variant="ghost"
+        size="icon-sm"
+        onClick={onRemove}
+        aria-label={`Remove ${email}`}
+        className="text-muted-foreground hover:text-foreground size-5"
+      >
+        <X className="size-3" />
+      </Button>
+    </span>
+  );
+}
+
+export function AddMembersDialog({
+  networkId,
+  open,
+  onOpenChange,
+}: {
+  networkId: string;
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}) {
+  const [emails, setEmails] = useState<string[]>([]);
+  const [input, setInput] = useState('');
+  const [error, setError] = useState<string | null>(null);
+  const inviteMembers = useInviteMembers(networkId);
+
+  const reset = () => {
+    setEmails([]);
+    setInput('');
+    setError(null);
+  };
+
+  const handleOpenChange = (next: boolean) => {
+    if (!next) reset();
+    onOpenChange(next);
+  };
+
+  // Commits the current input as a chip. Returns the next list of emails so
+  // callers (like submit) can act on the freshly-committed value.
+  const commit = (raw: string): string[] | null => {
+    const trimmed = raw.trim().replace(/,$/, '').trim();
+    if (!trimmed) return emails;
+    if (!emailSchema.safeParse(trimmed).success) {
+      setError(`"${trimmed}" doesn't look like a valid email.`);
+      return null;
+    }
+    if (emails.includes(trimmed)) {
+      setInput('');
+      return emails;
+    }
+    const next = [...emails, trimmed];
+    setEmails(next);
+    setInput('');
+    setError(null);
+    return next;
+  };
+
+  const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement>) => {
+    if (e.key === 'Enter' || e.key === ',') {
+      e.preventDefault();
+      commit(input);
+    } else if (e.key === 'Backspace' && input === '' && emails.length > 0) {
+      setEmails(emails.slice(0, -1));
+    }
+  };
+
+  const handleSubmit = (e: React.FormEvent) => {
+    e.preventDefault();
+    const next = commit(input);
+    if (next === null) return; // invalid pending input
+    if (next.length === 0) return;
+
+    inviteMembers.mutate(next, {
+      onSuccess: () => {
+        toast.success(
+          next.length === 1
+            ? `Invited ${next[0]}`
+            : `Invited ${next.length} people`,
+        );
+        handleOpenChange(false);
+      },
+    });
+  };
+
+  return (
+    <Dialog open={open} onOpenChange={handleOpenChange}>
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle>Add members</DialogTitle>
+          <DialogDescription>
+            Enter email addresses to add people to this network.
+          </DialogDescription>
+        </DialogHeader>
+        <form onSubmit={handleSubmit}>
+          <div className="border-input focus-within:border-ring focus-within:ring-ring/50 flex flex-wrap items-center gap-1.5 rounded-md border px-2 py-1.5 transition-colors focus-within:ring-[3px]">
+            {emails.map((email) => (
+              <EmailChip
+                key={email}
+                email={email}
+                onRemove={() => setEmails(emails.filter((x) => x !== email))}
+              />
+            ))}
+            <Input
+              type="email"
+              value={input}
+              onChange={(e) => {
+                setInput(e.target.value);
+                if (error) setError(null);
+              }}
+              onKeyDown={handleKeyDown}
+              onBlur={() => commit(input)}
+              placeholder={
+                emails.length === 0 ? 'name@example.com' : 'Add another…'
+              }
+              className="h-7 min-w-[8rem] flex-1 border-0 px-1 shadow-none focus-visible:ring-0"
+              autoFocus
+            />
+          </div>
+          {error ? (
+            <p className="text-destructive mt-1.5 text-xs">{error}</p>
+          ) : (
+            <Muted className="mt-1.5 text-xs">
+              Press Enter or comma to add each email.
+            </Muted>
+          )}
+          <DialogFooter className="mt-4">
+            <Button
+              type="button"
+              variant="outline"
+              onClick={() => handleOpenChange(false)}
+            >
+              Cancel
+            </Button>
+            <Button
+              type="submit"
+              disabled={
+                inviteMembers.isPending ||
+                (emails.length === 0 && input.trim() === '')
+              }
+            >
+              {inviteMembers.isPending ? 'Adding…' : 'Add members'}
+            </Button>
+          </DialogFooter>
+        </form>
+      </DialogContent>
+    </Dialog>
+  );
+}

js/desktop/src/features/particles/media-particle-view.tsx

@@ -11,7 +11,7 @@ import { useDownloadUrl } from '@/hooks/use-download-url';
 import { useTranscriptPlayback } from '@/hooks/use-transcript-playback';
 import { TranscriptOverlay } from '@/features/particles/transcript-overlay';
 import { Skeleton } from '@/components/ui/skeleton';
-import { AudioLevelBars } from '@/components/audio/audio-level-bars';
+import { CenteredWaveform } from '@/components/audio/centered-waveform';
 import { useAudioSource } from '@/components/audio/use-audio-source';
 import { useParticleAttachments } from '@/hooks/use-particle-attachments';
 import { ParticleAttachments } from '@/features/particles/particle-attachments';
@@ -89,7 +89,7 @@ export const MediaParticleView = forwardRef<
     currentTime,
   );
 
-  // WORKAROUND: useAudioSource needs an audio element, but audioRef is only set after mount
+  // useAudioSource needs the audio element, but audioRef is only set after mount
   const [audioEl, setAudioEl] = useState<HTMLAudioElement | null>(null);
   const audioSource = useAudioSource(audioEl);
 
@@ -156,7 +156,10 @@ export const MediaParticleView = forwardRef<
 
         {audioSource && (
           <div className="z-10 absolute bottom-20">
-            <AudioLevelBars sourceNode={audioSource.sourceNode} />
+            <CenteredWaveform
+              sourceNode={audioSource.sourceNode}
+              className="text-white"
+            />
           </div>
         )}
 

js/desktop/src/features/particles/particle-list-view.tsx

@@ -26,7 +26,7 @@ import { useAuthStore } from '@/stores/auth-store';
 import { particlePath } from '@/lib/particle-path';
 import { resolveHumanDisplay } from '@/lib/humans';
 import { RelativeTimestamp } from '@/components/relative-timestamp';
-import { Avatar, AvatarFallback } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
 import { Separator } from '@/components/ui/separator';
 import { Progress } from '@/components/ui/progress';
 import { Small } from '@/components/ui/typography';
@@ -150,7 +150,7 @@ const StreamRow = memo(function StreamRow({
     particle.visible_to.length === 2 &&
     particle.visible_to.every((v) => v.startsWith('human:'));
 
-  const initials = useMemo(() => {
+  const avatar = useMemo(() => {
     if (isDM) {
       const otherEntry = particle.visible_to.find(
         (v) => v !== `human:${userId}`,
@@ -158,7 +158,12 @@ const StreamRow = memo(function StreamRow({
       if (otherEntry) {
         const otherId = otherEntry.replace('human:', '');
         const otherHuman = network?.humans?.find((h) => h.id === otherId);
-        if (otherHuman) return getInitials(otherHuman.email);
+        if (otherHuman) {
+          return {
+            initials: getInitials(otherHuman.email),
+            avatarObjectId: otherHuman.avatar_object_id ?? null,
+          };
+        }
       }
     }
 
@@ -166,10 +171,18 @@ const StreamRow = memo(function StreamRow({
       const creator = network?.humans?.find(
         (h) => h.id === latestChild.created_by_human_id,
       );
-      if (creator) return getInitials(creator.email);
+      if (creator) {
+        return {
+          initials: getInitials(creator.email),
+          avatarObjectId: creator.avatar_object_id ?? null,
+        };
+      }
     }
 
-    return particle.properties.name.slice(0, 2).toUpperCase();
+    return {
+      initials: particle.properties.name.slice(0, 2).toUpperCase(),
+      avatarObjectId: null,
+    };
   }, [
     isDM,
     particle.visible_to,
@@ -242,11 +255,12 @@ const StreamRow = memo(function StreamRow({
       {videoThumbObjectId ? (
         <VideoThumbnail objectId={videoThumbObjectId} isUnseen={!!isUnseen} />
       ) : (
-        <Avatar className={cn(isUnseen && 'ring-2 ring-primary')}>
-          <AvatarFallback className="bg-primary/10 text-primary font-medium">
-            {initials}
-          </AvatarFallback>
-        </Avatar>
+        <HumanAvatar
+          className={cn(isUnseen && 'ring-2 ring-primary')}
+          avatarObjectId={avatar.avatarObjectId}
+          initials={avatar.initials}
+          fallbackClassName="bg-primary/10 text-primary font-medium"
+        />
       )}
       <div className="min-w-0 flex-1">
         <div className="flex items-center justify-between gap-2">

js/desktop/src/features/particles/playback-page-indicator.tsx

@@ -1,4 +1,4 @@
-import { Avatar, AvatarFallback } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
 import {
   Tooltip,
   TooltipContent,
@@ -161,18 +161,16 @@ function SegmentPresenceAvatars({
       {visible.map((human) => (
         <Tooltip key={human.humanId}>
           <TooltipTrigger asChild>
-            <Avatar
+            <HumanAvatar
               size="xs"
               className={
                 onlineHumanIds?.has(human.humanId)
                   ? 'ring-2 ring-green-500'
                   : 'ring-1 ring-black/50'
               }
-            >
-              <AvatarFallback>
-                {human.emailPrefix.slice(0, 2).toUpperCase()}
-              </AvatarFallback>
-            </Avatar>
+              avatarObjectId={human.avatarObjectId}
+              initials={human.emailPrefix.slice(0, 2).toUpperCase()}
+            />
           </TooltipTrigger>
           <TooltipContent side="top" className="text-xs">
             {human.email}

js/desktop/src/features/particles/reaction-bar.tsx

@@ -5,7 +5,7 @@ import {
   TooltipContent,
   TooltipTrigger,
 } from '@/components/ui/tooltip';
-import { Avatar, AvatarFallback } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
 import { REACTION_EMOJIS, type Reactions, type Human } from '@/api/types';
 import { cn } from '@/lib/utils';
 import { resolveHumanDisplay } from '@/lib/humans';
@@ -113,11 +113,13 @@ export function ReactionBar({
                     : 'bg-black/40 hover:bg-black/50',
                 )}
               >
-                <Avatar size="xs" className="shrink-0">
-                  <AvatarFallback className="bg-white/15 text-[9px] font-medium text-white">
-                    {firstReactor.initials}
-                  </AvatarFallback>
-                </Avatar>
+                <HumanAvatar
+                  size="xs"
+                  className="shrink-0"
+                  avatarObjectId={firstReactor.avatarObjectId}
+                  initials={firstReactor.initials}
+                  fallbackClassName="bg-white/15 text-[9px] font-medium text-white"
+                />
                 <span className="truncate text-white/90">{text}</span>
                 {reactors.length > 1 && (
                   <span className="shrink-0 text-white/60">

js/desktop/src/features/particles/stream-card.tsx

@@ -1,179 +0,0 @@
-import { forwardRef, useMemo } from 'react';
-import { Headphones } from 'lucide-react';
-import { cn, getInitials } from '@/lib/utils';
-import { useLiveLatestChild } from '@/hooks/use-particle';
-import { useAuthStore } from '@/stores/auth-store';
-import { particlePath } from '@/lib/particle-path';
-import type { Particle, StreamProperties } from '@/api/types';
-import { useStreamAutoplay } from '@/hooks/use-stream-autoplay';
-import { ParticlePreview } from '@/features/particles/particle-preview';
-import { useNetwork } from '@/hooks/use-networks';
-import { Avatar, AvatarFallback } from '@/components/ui/avatar';
-import { RelativeTimestamp } from '@/components/relative-timestamp';
-import { Small } from '@/components/ui/typography';
-
-interface StreamCardProps {
-  particle: Particle & { type: 'stream'; properties: StreamProperties };
-  networkId: string;
-  onClick: () => void;
-  isSelected?: boolean;
-  shortcutKey?: number;
-}
-
-export const StreamCard = forwardRef<HTMLDivElement, StreamCardProps>(
-  function StreamCard(
-    { particle, networkId, onClick, isSelected, shortcutKey },
-    ref,
-  ) {
-    const streamPath = particlePath(networkId, [particle.id]);
-    const { latestChild } = useLiveLatestChild(streamPath);
-    const userId = useAuthStore((s) => s.user?.id) ?? '';
-    const network = useNetwork(networkId);
-
-    useStreamAutoplay(latestChild, particle, networkId, network ?? undefined);
-
-    const hasActiveHuddle =
-      particle.huddle_active_participants &&
-      particle.huddle_active_participants.length > 0;
-    const huddleCount = particle.huddle_active_participants?.length ?? 0;
-
-    const isDM =
-      particle.visible_to.length === 2 &&
-      particle.visible_to.every((v) => v.startsWith('human:'));
-
-    const initials = useMemo(() => {
-      if (isDM) {
-        const otherEntry = particle.visible_to.find(
-          (v) => v !== `human:${userId}`,
-        );
-        if (otherEntry) {
-          const otherId = otherEntry.replace('human:', '');
-          const otherHuman = network?.humans?.find((h) => h.id === otherId);
-          if (otherHuman) return getInitials(otherHuman.email);
-        }
-      }
-
-      if (latestChild) {
-        const creator = network?.humans?.find(
-          (h) => h.id === latestChild.created_by_human_id,
-        );
-        if (creator) return getInitials(creator.email);
-      }
-
-      return particle.properties.name.slice(0, 2).toUpperCase();
-    }, [
-      isDM,
-      particle.visible_to,
-      particle.properties.name,
-      userId,
-      latestChild,
-      network,
-    ]);
-
-    const isUnseen = useMemo(() => {
-      if (!latestChild) return false;
-      const latestChildTimestamp = latestChild.created_at.getTime();
-      const userPlaybackPosition =
-        particle.playback_markers?.[userId]?.getTime() ?? 0;
-      return latestChildTimestamp > userPlaybackPosition;
-    }, [latestChild, particle.playback_markers, userId]);
-
-    // For media particles with a transcript, show it as an overlay on the preview
-    const transcript =
-      latestChild?.type === 'media'
-        ? latestChild.properties.transcript?.transcript
-        : undefined;
-
-    return (
-      <div
-        ref={ref}
-        role="button"
-        tabIndex={0}
-        onClick={onClick}
-        onKeyDown={(e) => {
-          if (e.key === 'Enter' || e.key === ' ') onClick();
-        }}
-        className={cn(
-          'cursor-pointer overflow-hidden rounded-xl ring-1 ring-foreground/10 transition-all hover:ring-foreground/20',
-          isUnseen && 'ring-2 ring-primary',
-          isSelected && 'ring-2 ring-ring',
-          hasActiveHuddle && 'ring-2 ring-red-500/70',
-        )}
-      >
-        {/* Preview area */}
-        <div className="relative aspect-[4/3] overflow-hidden bg-muted">
-          {hasActiveHuddle && (
-            <div className="pointer-events-none absolute inset-0 z-10 bg-gradient-to-b from-red-500/15 to-transparent" />
-          )}
-          {shortcutKey && (
-            <kbd className="absolute top-1.5 left-1.5 z-10 flex size-5 items-center justify-center rounded bg-black/50 font-mono text-xs text-white/70">
-              {shortcutKey}
-            </kbd>
-          )}
-          {latestChild ? (
-            <ParticlePreview particle={latestChild} />
-          ) : (
-            <div className="flex h-full w-full items-center justify-center">
-              <p className="text-muted-foreground text-xs italic">
-                No messages yet
-              </p>
-            </div>
-          )}
-
-          {/* Transcript overlay for media with transcripts */}
-          {transcript && (
-            <div className="absolute inset-x-0 bottom-0 bg-gradient-to-t from-black/80 to-transparent px-2.5 pt-6 pb-2">
-              <p className="line-clamp-2 text-md leading-snug text-white/90">
-                {transcript}
-              </p>
-            </div>
-          )}
-        </div>
-
-        {/* Info bar */}
-        <div className="flex items-center gap-2 px-2.5 py-2">
-          <Avatar
-            className={cn('size-6 shrink-0', isUnseen && 'ring-2 ring-primary')}
-          >
-            <AvatarFallback className="bg-primary/10 text-primary text-[10px] font-medium">
-              {initials}
-            </AvatarFallback>
-          </Avatar>
-          <Small
-            className={cn(
-              'min-w-0 truncate',
-              isUnseen
-                ? 'font-semibold text-foreground'
-                : 'font-medium text-muted-foreground',
-            )}
-          >
-            {particle.properties.name}
-          </Small>
-          <div className="ml-auto flex shrink-0 items-center gap-1.5">
-            {hasActiveHuddle && (
-              <span className="flex items-center gap-1 rounded-full bg-red-500/15 px-1.5 py-0.5">
-                <Headphones className="size-3 text-red-400" />
-                <span className="text-[10px] font-medium text-red-400">
-                  {huddleCount}
-                </span>
-              </span>
-            )}
-            {latestChild && (
-              <Small
-                className={cn(
-                  'text-[10px]',
-                  isUnseen ? 'text-primary' : 'text-muted-foreground',
-                )}
-              >
-                <RelativeTimestamp date={latestChild.created_at} />
-              </Small>
-            )}
-            {isUnseen && (
-              <span className="size-2 shrink-0 rounded-full bg-primary" />
-            )}
-          </div>
-        </div>
-      </div>
-    );
-  },
-);

js/desktop/src/features/particles/stream-members-overlay.tsx

@@ -1,7 +1,7 @@
 import { useCallback, useEffect, useMemo } from 'react';
 import { createPortal } from 'react-dom';
 import { X, UserPlus, Globe, Users, Lock } from 'lucide-react';
-import { Avatar, AvatarFallback } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
 import { ScrollArea } from '@/components/ui/scroll-area';
 import { KeyHint } from '@/components/key-hint';
 import {
@@ -170,11 +170,12 @@ export function StreamMembersOverlay({
                     key={id}
                     className="group flex items-center gap-2.5 rounded px-2 py-1.5 text-sm text-white/70"
                   >
-                    <Avatar size="sm">
-                      <AvatarFallback className="text-[10px]">
-                        {display.initials}
-                      </AvatarFallback>
-                    </Avatar>
+                    <HumanAvatar
+                      size="sm"
+                      avatarObjectId={display.avatarObjectId}
+                      initials={display.initials}
+                      fallbackClassName="text-[10px]"
+                    />
                     <span
                       className={cn(
                         'flex-1 truncate',
@@ -225,11 +226,12 @@ export function StreamMembersOverlay({
                           'flex w-full items-center gap-2.5 rounded px-2 py-1.5 text-left text-sm text-white/70 transition-colors hover:bg-white/5',
                         )}
                       >
-                        <Avatar size="sm">
-                          <AvatarFallback className="text-[10px]">
-                            {getInitials(human.email)}
-                          </AvatarFallback>
-                        </Avatar>
+                        <HumanAvatar
+                          size="sm"
+                          avatarObjectId={human.avatar_object_id}
+                          initials={getInitials(human.email)}
+                          fallbackClassName="text-[10px]"
+                        />
                         <span className="flex-1 truncate">
                           {human.email_prefix}
                         </span>

js/desktop/src/features/particles/stream-top-bar.tsx

@@ -4,7 +4,8 @@ import { useAuthStore } from '@/stores/auth-store';
 import { apiClient } from '@/api/client';
 import { isParticleDeleted, type Particle } from '@/api/types';
 import { particlePath, toFirestoreDocPath } from '@/lib/particle-path';
-import { Avatar, AvatarFallback, AvatarGroup } from '@/components/ui/avatar';
+import { AvatarGroup } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
 import {
   Tooltip,
   TooltipContent,
@@ -147,11 +148,12 @@ export function TopBar({ networkId, particle, streamParticle }: TopBarProps) {
               return (
                 <Tooltip key={humanId}>
                   <TooltipTrigger asChild>
-                    <Avatar size="sm">
-                      <AvatarFallback className="bg-red-500/30 text-[8px] text-red-200">
-                        {display.initials}
-                      </AvatarFallback>
-                    </Avatar>
+                    <HumanAvatar
+                      size="sm"
+                      avatarObjectId={display.avatarObjectId}
+                      initials={display.initials}
+                      fallbackClassName="bg-red-500/30 text-[8px] text-red-200"
+                    />
                   </TooltipTrigger>
                   <TooltipContent>{display.email}</TooltipContent>
                 </Tooltip>
@@ -313,11 +315,13 @@ function MembersIndicator({
             <>
               <AvatarGroup>
                 {shownMembers.map((human) => (
-                  <Avatar key={human.id} size="sm">
-                    <AvatarFallback className="text-[8px]">
-                      {resolveHumanDisplay(human.id, humans).initials}
-                    </AvatarFallback>
-                  </Avatar>
+                  <HumanAvatar
+                    key={human.id}
+                    size="sm"
+                    avatarObjectId={human.avatar_object_id}
+                    initials={resolveHumanDisplay(human.id, humans).initials}
+                    fallbackClassName="text-[8px]"
+                  />
                 ))}
               </AvatarGroup>
               {overflow > 0 && (
@@ -355,9 +359,12 @@ function ParticleBreadcrumbContent({
 
   return (
     <span className="flex items-center gap-1.5">
-      <Avatar size="sm" className={isOnline ? 'ring-2 ring-green-500' : ''}>
-        <AvatarFallback>{display.initials}</AvatarFallback>
-      </Avatar>
+      <HumanAvatar
+        size="sm"
+        className={isOnline ? 'ring-2 ring-green-500' : ''}
+        avatarObjectId={display.avatarObjectId}
+        initials={display.initials}
+      />
       {display.displayName} - <RelativeTimestamp date={particle.created_at} />
     </span>
   );

js/desktop/src/features/settings-page.tsx

@@ -11,8 +11,10 @@ import {
   FileText,
   Volume2,
   ArrowLeft,
+  Camera,
 } from 'lucide-react';
-import { Avatar, AvatarFallback } from '@/components/ui/avatar';
+import { HumanAvatar } from '@/components/human-avatar';
+import { AvatarEditDialog } from '@/features/settings/avatar-edit-dialog';
 import { Separator } from '@/components/ui/separator';
 import { Switch } from '@/components/ui/switch';
 import { WindowControls } from '@/components/window-controls';
@@ -88,6 +90,7 @@ export default function SettingsPage() {
   const soundEffectsEnabled = useSoundEffectsStore((s) => s.enabled);
   const setSoundEffectsEnabled = useSoundEffectsStore((s) => s.setEnabled);
   const [version, setVersion] = useState<string>();
+  const [avatarOpen, setAvatarOpen] = useState(false);
 
   useEffect(() => {
     platform.app.getVersion().then(setVersion);
@@ -135,17 +138,30 @@ export default function SettingsPage() {
       <ScrollArea className="flex-1">
         {/* Profile header */}
         <div className="flex items-center gap-3 px-4 py-5">
-          <Avatar size="lg">
-            <AvatarFallback className="bg-primary/10 text-primary font-medium">
-              {initials}
-            </AvatarFallback>
-          </Avatar>
+          <button
+            type="button"
+            onClick={() => setAvatarOpen(true)}
+            className="group relative rounded-full"
+            aria-label="Change profile picture"
+          >
+            <HumanAvatar
+              size="lg"
+              avatarObjectId={user?.avatar_object_id}
+              initials={initials}
+              fallbackClassName="bg-primary/10 text-primary font-medium"
+            />
+            <span className="absolute inset-0 flex items-center justify-center rounded-full bg-black/40 opacity-0 transition-opacity group-hover:opacity-100">
+              <Camera className="size-4 text-white" />
+            </span>
+          </button>
           <div className="min-w-0 flex-1">
             <p className="truncate text-sm font-medium">{user?.email_prefix}</p>
             <Muted className="text-xs">{user?.email}</Muted>
           </div>
         </div>
 
+        <AvatarEditDialog open={avatarOpen} onOpenChange={setAvatarOpen} />
+
         <Separator />
 
         <SettingsGroup title="Notifications">

js/desktop/src/features/settings/audio-video-settings-page.tsx

@@ -12,7 +12,7 @@ import {
   SelectTrigger,
   SelectValue,
 } from '@/components/ui/select';
-import { AudioLevelBars } from '@/components/audio/audio-level-bars';
+import { CenteredWaveform } from '@/components/audio/centered-waveform';
 import { useAudioSource } from '@/components/audio/use-audio-source';
 import { useMediaDevices } from '@/hooks/use-media-devices';
 import {
@@ -105,20 +105,17 @@ function FieldLabel({ children }: { children: React.ReactNode }) {
 function InlineLevelMeter({ stream }: { stream: MediaStream | null }) {
   const audioSource = useAudioSource(stream);
   if (!audioSource) {
-    return (
-      <div className="flex h-3 items-end gap-1">
-        {[0, 1, 2].map((i) => (
-          <div key={i} className="bg-muted h-1 w-1 rounded-full" />
-        ))}
-      </div>
-    );
+    return <div className="bg-muted h-3 w-20 rounded-sm opacity-50" />;
   }
   return (
-    <div className="flex h-3 items-end">
-      <div className="scale-[0.55] origin-right">
-        <AudioLevelBars sourceNode={audioSource.sourceNode} />
-      </div>
-    </div>
+    <CenteredWaveform
+      sourceNode={audioSource.sourceNode}
+      width={80}
+      height={12}
+      barWidth={2}
+      gap={3}
+      className="text-primary"
+    />
   );
 }
 

js/desktop/src/features/settings/avatar-edit-dialog.tsx

@@ -0,0 +1,340 @@
+import { useCallback, useEffect, useRef, useState } from 'react';
+import { Camera, Loader2, Trash2, Upload } from 'lucide-react';
+import { toast } from 'sonner';
+import {
+  Dialog,
+  DialogContent,
+  DialogDescription,
+  DialogFooter,
+  DialogHeader,
+  DialogTitle,
+} from '@/components/ui/dialog';
+import { Tabs, TabsContent, TabsList, TabsTrigger } from '@/components/ui/tabs';
+import { Button } from '@/components/ui/button';
+import { Muted } from '@/components/ui/typography';
+import { apiClient } from '@/api/client';
+import { useAuthStore } from '@/stores/auth-store';
+import { useMediaDevicesStore } from '@/stores/media-devices-store';
+import { useAvatarUrl } from '@/hooks/use-avatar-url';
+import { useFileInput } from '@/hooks/use-file-input';
+import { toAvatarBlob } from '@/lib/avatar-image';
+import { logError, toUserMessage } from '@/lib/errors';
+import { cn } from '@/lib/utils';
+
+// Guard the *source* file before decoding so we never load a huge image into
+// memory just to throw most of it away — the uploaded blob is always our small
+// re-encoded square regardless of input size.
+const MAX_SOURCE_BYTES = 30 * 1024 * 1024;
+
+interface AvatarEditDialogProps {
+  open: boolean;
+  onOpenChange: (open: boolean) => void;
+}
+
+export function AvatarEditDialog({
+  open,
+  onOpenChange,
+}: AvatarEditDialogProps) {
+  const user = useAuthStore((s) => s.user);
+  const refreshUser = useAuthStore((s) => s.refreshUser);
+  const currentUrl = useAvatarUrl(user?.avatar_object_id);
+  const initials = user?.email_prefix?.slice(0, 2).toUpperCase() ?? '?';
+  const hasAvatar = !!user?.avatar_object_id;
+
+  const [tab, setTab] = useState<'upload' | 'camera'>('upload');
+  const [prepared, setPrepared] = useState<{ blob: Blob; url: string } | null>(
+    null,
+  );
+  const [busy, setBusy] = useState(false);
+
+  // Keep the latest prepared blob in a ref so the unmount cleanup can revoke
+  // its object URL without re-running on every change.
+  const preparedRef = useRef(prepared);
+  useEffect(() => {
+    preparedRef.current = prepared;
+  }, [prepared]);
+  useEffect(
+    () => () => {
+      if (preparedRef.current) URL.revokeObjectURL(preparedRef.current.url);
+    },
+    [],
+  );
+
+  const setPreparedFromBlob = useCallback((blob: Blob) => {
+    setPrepared((prev) => {
+      if (prev) URL.revokeObjectURL(prev.url);
+      return { blob, url: URL.createObjectURL(blob) };
+    });
+  }, []);
+
+  // Close and reset to a clean slate so reopening starts fresh.
+  const close = useCallback(() => {
+    setPrepared((prev) => {
+      if (prev) URL.revokeObjectURL(prev.url);
+      return null;
+    });
+    setTab('upload');
+    setBusy(false);
+    onOpenChange(false);
+  }, [onOpenChange]);
+
+  const handleOpenChange = useCallback(
+    (next: boolean) => {
+      if (next) onOpenChange(true);
+      else close();
+    },
+    [close, onOpenChange],
+  );
+
+  const handleFiles = useCallback(
+    async (files: File[]) => {
+      const file = files[0];
+      if (!file) return;
+      if (!file.type.startsWith('image/')) {
+        toast.error('Please choose an image file.');
+        return;
+      }
+      if (file.size > MAX_SOURCE_BYTES) {
+        toast.error('That image is too large — choose one under 30MB.');
+        return;
+      }
+      try {
+        const bitmap = await createImageBitmap(file);
+        const blob = await toAvatarBlob(bitmap);
+        bitmap.close();
+        setPreparedFromBlob(blob);
+      } catch (err) {
+        toast.error('Could not process that image.');
+        logError(err, { scope: 'avatar.processFile' });
+      }
+    },
+    [setPreparedFromBlob],
+  );
+
+  const { openFilePicker, isDragging, dropZoneProps } = useFileInput({
+    onFilesSelected: handleFiles,
+    enabled: open && tab === 'upload',
+  });
+
+  const handleSave = async () => {
+    if (!prepared) return;
+    setBusy(true);
+    try {
+      await apiClient.updateAvatar(prepared.blob);
+      await refreshUser();
+      toast.success('Avatar updated');
+      close();
+    } catch (err) {
+      toast.error(toUserMessage(err));
+      logError(err, { scope: 'avatar.save' });
+      setBusy(false);
+    }
+  };
+
+  const handleRemove = async () => {
+    setBusy(true);
+    try {
+      await apiClient.deleteAvatar();
+      await refreshUser();
+      toast.success('Avatar removed');
+      close();
+    } catch (err) {
+      toast.error(toUserMessage(err));
+      logError(err, { scope: 'avatar.remove' });
+      setBusy(false);
+    }
+  };
+
+  const previewUrl = prepared?.url ?? currentUrl;
+
+  return (
+    <Dialog open={open} onOpenChange={handleOpenChange}>
+      <DialogContent>
+        <DialogHeader>
+          <DialogTitle>Profile picture</DialogTitle>
+          <DialogDescription>
+            Upload an image or take one with your camera.
+          </DialogDescription>
+        </DialogHeader>
+
+        <div className="flex flex-col items-center gap-4 py-1">
+          <div className="bg-muted flex size-24 items-center justify-center overflow-hidden rounded-full border">
+            {previewUrl ? (
+              <img src={previewUrl} alt="" className="size-full object-cover" />
+            ) : (
+              <span className="text-muted-foreground text-2xl font-medium">
+                {initials}
+              </span>
+            )}
+          </div>
+
+          <Tabs
+            value={tab}
+            onValueChange={(v) => setTab(v as 'upload' | 'camera')}
+            className="w-full"
+          >
+            <TabsList className="w-full">
+              <TabsTrigger value="upload">
+                <Upload />
+                Upload
+              </TabsTrigger>
+              <TabsTrigger value="camera">
+                <Camera />
+                Take photo
+              </TabsTrigger>
+            </TabsList>
+
+            <TabsContent value="upload" className="pt-3">
+              <div
+                {...dropZoneProps}
+                className={cn(
+                  'flex flex-col items-center justify-center gap-2 rounded-lg border border-dashed px-6 py-5 text-center transition-colors',
+                  isDragging && 'border-primary bg-primary/5',
+                )}
+              >
+                <Muted className="text-xs">Drag an image here, or</Muted>
+                <Button variant="outline" size="sm" onClick={openFilePicker}>
+                  Choose image
+                </Button>
+              </div>
+            </TabsContent>
+
+            <TabsContent value="camera" className="pt-3">
+              <CameraCapture
+                active={open && tab === 'camera'}
+                onCapture={setPreparedFromBlob}
+              />
+            </TabsContent>
+          </Tabs>
+        </div>
+
+        <DialogFooter>
+          {hasAvatar && (
+            <Button
+              variant="ghost"
+              size="sm"
+              className="text-destructive hover:text-destructive sm:mr-auto"
+              onClick={handleRemove}
+              disabled={busy}
+            >
+              <Trash2 className="mr-1 size-3.5" />
+              Remove
+            </Button>
+          )}
+          <Button variant="outline" size="sm" onClick={close} disabled={busy}>
+            Cancel
+          </Button>
+          <Button size="sm" onClick={handleSave} disabled={!prepared || busy}>
+            {busy && <Loader2 className="mr-1 size-3.5 animate-spin" />}
+            Save
+          </Button>
+        </DialogFooter>
+      </DialogContent>
+    </Dialog>
+  );
+}
+
+function CameraCapture({
+  active,
+  onCapture,
+}: {
+  active: boolean;
+  onCapture: (blob: Blob) => void;
+}) {
+  const videoRef = useRef<HTMLVideoElement>(null);
+  const [stream, setStream] = useState<MediaStream | null>(null);
+  const [error, setError] = useState<string | null>(null);
+  const [capturing, setCapturing] = useState(false);
+  // Honor the camera the user picked in Audio & Video settings. `ideal` rather
+  // than `exact` so a since-unplugged device falls back to the default instead
+  // of throwing OverconstrainedError.
+  const savedCameraId = useMediaDevicesStore((s) => s.camera?.deviceId);
+
+  useEffect(() => {
+    if (!active) return;
+
+    let cancelled = false;
+    let acquired: MediaStream | null = null;
+
+    const video: MediaTrackConstraints = { aspectRatio: { ideal: 1 } };
+    if (savedCameraId) video.deviceId = { ideal: savedCameraId };
+
+    navigator.mediaDevices
+      .getUserMedia({ video, audio: false })
+      .then((s) => {
+        if (cancelled) {
+          s.getTracks().forEach((t) => t.stop());
+          return;
+        }
+        acquired = s;
+        setStream(s);
+        setError(null);
+      })
+      .catch((err: unknown) => {
+        if (cancelled) return;
+        setError(
+          err instanceof Error ? err.message : 'Unable to access camera',
+        );
+      });
+
+    return () => {
+      cancelled = true;
+      acquired?.getTracks().forEach((t) => t.stop());
+      setStream(null);
+    };
+  }, [active, savedCameraId]);
+
+  useEffect(() => {
+    if (videoRef.current) videoRef.current.srcObject = stream;
+  }, [stream]);
+
+  const handleCapture = async () => {
+    const video = videoRef.current;
+    // readyState < HAVE_CURRENT_DATA (or zero dimensions) means no frame has
+    // decoded yet — capturing now would grab a blank image.
+    if (!video || video.readyState < 2 || !video.videoWidth) {
+      toast.error('Camera is still starting — try again in a moment.');
+      return;
+    }
+    setCapturing(true);
+    try {
+      const bitmap = await createImageBitmap(video);
+      // Mirror to match the (mirrored) live preview the user is looking at.
+      const blob = await toAvatarBlob(bitmap, { mirror: true });
+      bitmap.close();
+      onCapture(blob);
+    } catch (err) {
+      toast.error('Could not capture photo.');
+      logError(err, { scope: 'avatar.capture' });
+    } finally {
+      setCapturing(false);
+    }
+  };
+
+  if (error) {
+    return (
+      <div className="flex flex-col items-center gap-1 rounded-lg border border-dashed px-6 py-5 text-center">
+        <Muted className="text-xs">Couldn't access your camera.</Muted>
+        <Muted className="text-[11px]">{error}</Muted>
+      </div>
+    );
+  }
+
+  return (
+    <div className="flex flex-col items-center gap-3">
+      <div className="bg-muted size-36 overflow-hidden rounded-full border">
+        <video
+          ref={videoRef}
+          muted
+          autoPlay
+          playsInline
+          className="size-full -scale-x-100 object-cover"
+        />
+      </div>
+      <Button size="sm" onClick={handleCapture} disabled={!stream || capturing}>
+        <Camera className="mr-1 size-3.5" />
+        Capture
+      </Button>
+    </div>
+  );
+}

js/desktop/src/hooks/use-avatar-url.ts

@@ -0,0 +1,20 @@
+import { useQuery, skipToken } from '@tanstack/react-query';
+import { apiClient } from '@/api/client';
+
+/**
+ * Resolves an avatar object id to a signed download URL. Mirrors
+ * {@link import('./use-download-url').useDownloadUrl} — React Query handles
+ * caching and de-duping, so many avatars sharing an id make a single request.
+ */
+export function useAvatarUrl(
+  objectId: string | null | undefined,
+): string | undefined {
+  const { data } = useQuery({
+    queryKey: ['avatar-url', objectId],
+    queryFn: objectId
+      ? () => apiClient.getAvatarDownloadUrl(objectId)
+      : skipToken,
+    staleTime: 1000 * 60 * 60, // 1 hour — signed URLs valid for 24h
+  });
+  return data;
+}

js/desktop/src/hooks/use-presence-positions.ts

@@ -5,6 +5,7 @@ export interface HumanPresence {
   humanId: string;
   email: string;
   emailPrefix: string;
+  avatarObjectId: string | null;
 }
 
 /**
@@ -42,6 +43,7 @@ export function usePresencePositions(
         humanId: human.id,
         email: human.email,
         emailPrefix: human.email_prefix,
+        avatarObjectId: human.avatar_object_id ?? null,
       };
       if (existing) {
         existing.push(presence);

js/desktop/src/hooks/use-recording-mode.ts

@@ -1,22 +0,0 @@
-import { useState, useCallback } from 'react';
-
-export type RecordingMode = 'video' | 'audio';
-
-const KEY = 'llink:recording-mode';
-
-export function useRecordingMode(): [
-  RecordingMode,
-  (mode: RecordingMode) => void,
-] {
-  const [mode, setModeState] = useState<RecordingMode>(() => {
-    const stored = localStorage.getItem(KEY);
-    return stored === 'audio' ? 'audio' : 'video';
-  });
-
-  const setMode = useCallback((m: RecordingMode) => {
-    localStorage.setItem(KEY, m);
-    setModeState(m);
-  }, []);
-
-  return [mode, setMode];
-}

js/desktop/src/lib/avatar-image.ts

@@ -0,0 +1,36 @@
+/**
+ * Center-crop an image source to a square and downscale it to a JPEG suitable
+ * for an avatar. Avatars never render larger than ~80px, so 512px is generous
+ * headroom while keeping the upload to a few tens of KB regardless of input.
+ *
+ * Pass `mirror` when capturing from a (mirrored) webcam preview so the saved
+ * image matches what the user saw.
+ */
+export async function toAvatarBlob(
+  source: ImageBitmap,
+  { size = 512, mirror = false }: { size?: number; mirror?: boolean } = {},
+): Promise<Blob> {
+  if (!Number.isInteger(size) || size <= 0) {
+    throw new Error('Avatar size must be a positive integer');
+  }
+  const side = Math.min(source.width, source.height);
+  if (side === 0) {
+    // A not-yet-decoded <video> or a corrupt image yields a zero-size source;
+    // cropping it would silently produce a blank avatar, so fail instead.
+    throw new Error('Image source has zero dimensions');
+  }
+  const sx = (source.width - side) / 2;
+  const sy = (source.height - side) / 2;
+
+  const canvas = new OffscreenCanvas(size, size);
+  const ctx = canvas.getContext('2d');
+  if (!ctx) throw new Error('Failed to acquire 2D canvas context');
+
+  if (mirror) {
+    ctx.translate(size, 0);
+    ctx.scale(-1, 1);
+  }
+  ctx.drawImage(source, sx, sy, side, side, 0, 0, size, size);
+
+  return canvas.convertToBlob({ type: 'image/jpeg', quality: 0.82 });
+}

js/desktop/src/lib/humans.ts

@@ -13,6 +13,8 @@ export interface HumanDisplay {
   email: string;
   /** Initials for avatar fallback. */
   initials: string;
+  /** Avatar object id, when the human has a profile picture set. */
+  avatarObjectId: string | null;
 }
 
 /**
@@ -32,6 +34,7 @@ export function resolveHumanDisplay(
       displayName: REMOVED_MEMBER_LABEL,
       email: REMOVED_MEMBER_LABEL,
       initials: REMOVED_MEMBER_INITIALS,
+      avatarObjectId: null,
     };
   }
   return {
@@ -39,5 +42,6 @@ export function resolveHumanDisplay(
     displayName: human.email_prefix,
     email: human.email,
     initials: getInitials(human.email),
+    avatarObjectId: human.avatar_object_id ?? null,
   };
 }

js/desktop/src/stores/auth-store.ts

@@ -30,6 +30,7 @@ interface AuthState {
   isSigningOut: boolean;
   error: string | null;
   restoreSession: () => Promise<void>;
+  refreshUser: () => Promise<void>;
   requestCode: (email: string) => Promise<void>;
   signIn: (email: string, code: string) => Promise<void>;
   signOut: () => Promise<void>;
@@ -64,6 +65,11 @@ export const useAuthStore = create<AuthState>((set) => ({
     }
   },
 
+  refreshUser: async () => {
+    const user = await apiClient.me();
+    set({ user });
+  },
+
   requestCode: async (email: string) => {
     set({ isRequestingCode: true, error: null });
     try {