Mobile companion app + paired-device backend

New iOS-first companion (Expo SDK 54 + NativeWind v4) with three tabs:
Captures (the hero — floating gold mic, live mic-meter waveform,
expand-row playback), Generate (profile picker + speak + autoplay +
recent), and Voices (searchable profile list).

Pairing (V0): backend mints a one-time token, mobile scans/pastes the
voicebox:// URL, server returns a long-lived bearer it stores only as a
SHA-256 hash. Bearer-or-loopback auth applied to every user-data router
so binding 0.0.0.0 doesn't leak existing endpoints. Loopback callers
(the desktop app) keep their friction-free access.

Desktop Settings → Mobile pane: live host picker (LAN / Tailscale auto-
detected via the App-bundle binary path on macOS), QR rendering,
5-minute expiry countdown, copyable URL fallback, paired-device list
with revoke. Auto-closes when a new device pairs.

just dev now binds the backend to 0.0.0.0 so paired phones can reach
it — and just setup-python pins mlx-audio==0.4.1 + mlx-lm so fresh
Apple Silicon worktrees get a working STT path on first install.

mobile/tailwind.config.js

@@ -0,0 +1,46 @@
+/** @type {import('tailwindcss').Config} */
+module.exports = {
+  content: ['./app/**/*.{ts,tsx}', './src/**/*.{ts,tsx}'],
+  presets: [require('nativewind/preset')],
+  theme: {
+    extend: {
+      colors: {
+        background: 'hsl(0 0% 6%)',
+        foreground: 'hsl(0 0% 95%)',
+        card: {
+          DEFAULT: 'hsl(0 0% 8%)',
+          foreground: 'hsl(0 0% 95%)',
+        },
+        popover: {
+          DEFAULT: 'hsl(0 0% 8%)',
+          foreground: 'hsl(0 0% 95%)',
+        },
+        primary: {
+          DEFAULT: 'hsl(0 0% 18%)',
+          foreground: 'hsl(0 0% 95%)',
+        },
+        secondary: {
+          DEFAULT: 'hsl(0 0% 12%)',
+          foreground: 'hsl(0 0% 95%)',
+        },
+        muted: {
+          DEFAULT: 'hsl(0 0% 12%)',
+          foreground: 'hsl(0 0% 60%)',
+        },
+        accent: {
+          DEFAULT: 'hsl(43 50% 45%)',
+          foreground: 'hsl(0 0% 95%)',
+          faint: 'hsl(43 50% 38%)',
+        },
+        destructive: {
+          DEFAULT: 'hsl(0 62.8% 50%)',
+          foreground: 'hsl(0 0% 95%)',
+        },
+        border: 'hsl(0 0% 12%)',
+        input: 'hsl(0 0% 12%)',
+        ring: 'hsl(0 0% 40%)',
+      },
+    },
+  },
+  plugins: [],
+};