feat: Android TV app embedding Python server via Chaquopy
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Adds a native Android TV application that runs the full LedGrab Python server in-process via Chaquopy. Captures the TV box screen using the MediaProjection API and exposes the existing web UI on the device's local network — users configure via phone/tablet browser. Android (new /android/ module): - Kotlin shell: MainActivity, CaptureService (foreground service), ScreenCapture (MediaProjection + ImageReader), PythonBridge (Chaquopy). - Polished Leanback-themed UI with QR code for easy web UI access. - AGP 8.9 + Chaquopy 17 + Gradle 8.11 (avoids the AGP 8.7 thread-lock bug). - Pre-built pydantic-core wheels for arm64-v8a, x86_64, x86 cross-compiled with maturin + Android NDK, linked against Chaquopy's libpython3.11.so. Python server platform guards: - New utils/platform.py with is_android()/is_windows()/is_linux() helpers. - Guard every top-level import of desktop-only packages (mss, psutil, sounddevice, pyserial, PyAudioWPatch, etc.) with try/except ImportError. - Android-incompatible calls gated with None-checks so the server runs on reduced capabilities on Android (no CPU/RAM metrics, no mss displays). - utils/image_codec.py gains a Pillow fallback for resize + JPEG encode when cv2 is unavailable; all internal cv2.resize callers migrated. - New android_entry.py start_server/stop_server invoked from Kotlin. - get_displays API falls back to best available engine when mss fails. New capture engines: - MediaProjectionEngine: receives RGBA frames pushed from Kotlin through a thread-safe queue; caches last frame for static-screen previews. - ScrcpyClientEngine: optional H.264 streaming via scrcpy-client library (priority 10, overrides the ADB-screencap engine when installed). Frontend: - Tab loaders previously required an apiKey; now correctly treat "auth disabled" as authenticated (Android has no auth by default). - Re-trigger the active tab's loader after loadServerInfo resolves authRequired, since initTabs runs earlier. - Add i18n keys for the demo / mediaprojection / scrcpy_client engines. Docs: - TODO.md: follow-ups for multi-ABI wheel rebuilds, CI pipeline, USB serial LED controllers, root-only capture, perf metrics abstraction. - CLAUDE.md: Android dependency sync policy (pip --exclude doesn't exist). Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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<?xml version="1.0" encoding="utf-8"?>
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<FrameLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:background="@drawable/bg_main">
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<!-- STOPPED STATE -->
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<LinearLayout
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android:id="@+id/stopped_panel"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:orientation="vertical"
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android:gravity="center"
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android:paddingStart="160dp"
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android:paddingEnd="160dp">
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<ImageView
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android:layout_width="72dp"
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android:layout_height="72dp"
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android:src="@drawable/ic_launcher"
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android:contentDescription="@null"
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android:layout_marginBottom="24dp" />
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<TextView
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/app_name"
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android:textColor="@color/teal_accent"
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android:textSize="64sp"
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android:textStyle="bold"
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android:letterSpacing="0.08"
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android:layout_marginBottom="12dp"
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android:fontFamily="sans-serif-light" />
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<TextView
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android:id="@+id/status_text"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/tagline"
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android:textColor="@color/text_secondary"
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android:textSize="28sp"
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android:layout_marginBottom="64dp" />
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<Button
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android:id="@+id/toggle_button"
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style="@style/Widget.LedGrab.Button.Primary"
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android:layout_width="320dp"
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android:layout_height="72dp"
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android:text="@string/btn_start"
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android:textSize="22sp"
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android:focusable="true"
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android:focusableInTouchMode="true" />
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</LinearLayout>
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<!-- Version at bottom -->
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<TextView
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android:id="@+id/version_text"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:layout_gravity="bottom|center_horizontal"
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android:layout_marginBottom="32dp"
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android:textColor="@color/text_hint"
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android:textSize="18sp"
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tools:text="v0.1.0" />
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<!-- RUNNING STATE -->
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<LinearLayout
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android:id="@+id/running_panel"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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android:orientation="horizontal"
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android:gravity="center_vertical"
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android:paddingStart="120dp"
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android:paddingEnd="120dp"
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android:paddingTop="80dp"
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android:paddingBottom="80dp"
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android:visibility="gone">
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<!-- Left: status + URL + stop -->
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<LinearLayout
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android:layout_width="0dp"
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android:layout_height="wrap_content"
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android:layout_weight="1"
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android:orientation="vertical"
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android:gravity="start|center_vertical"
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android:paddingEnd="64dp">
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<LinearLayout
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:orientation="horizontal"
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android:gravity="center_vertical"
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android:layout_marginBottom="32dp">
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<View
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android:layout_width="18dp"
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android:layout_height="18dp"
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android:background="@drawable/bg_status_dot"
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android:layout_marginEnd="16dp" />
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<TextView
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/status_running"
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android:textColor="@color/green_status"
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android:textSize="28sp"
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android:textStyle="bold"
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android:letterSpacing="0.05" />
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</LinearLayout>
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<TextView
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/label_web_ui"
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android:textColor="@color/text_secondary"
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android:textSize="22sp"
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android:layout_marginBottom="8dp" />
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<TextView
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android:id="@+id/url_text"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:textColor="@color/teal_accent"
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android:textSize="30sp"
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android:maxLines="1"
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android:textStyle="bold"
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android:background="@drawable/bg_url_chip"
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android:paddingStart="24dp"
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android:paddingEnd="24dp"
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android:paddingTop="12dp"
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android:paddingBottom="12dp"
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android:layout_marginBottom="56dp"
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tools:text="http://192.168.1.5:8080" />
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<Button
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android:id="@+id/stop_button_running"
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style="@style/Widget.LedGrab.Button.Secondary"
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android:layout_width="240dp"
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android:layout_height="64dp"
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android:text="@string/btn_stop"
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android:textSize="20sp"
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android:focusable="true"
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android:focusableInTouchMode="true" />
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</LinearLayout>
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<!-- Right: QR code -->
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<LinearLayout
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:orientation="vertical"
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android:gravity="center">
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<FrameLayout
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:background="@drawable/bg_qr_container"
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android:padding="20dp"
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android:layout_marginBottom="20dp">
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<ImageView
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android:id="@+id/qr_image"
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android:layout_width="280dp"
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android:layout_height="280dp"
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android:contentDescription="@string/qr_description"
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android:scaleType="fitXY" />
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</FrameLayout>
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<TextView
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="@string/scan_to_configure"
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android:textColor="@color/text_secondary"
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android:textSize="22sp"
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android:gravity="center" />
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</LinearLayout>
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</LinearLayout>
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</FrameLayout>
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