Bundle Python and adb so the app needs nothing installed

- app/build/fetch-deps.js downloads a standalone Python 3.12
  (python-build-standalone) for every build and adb from Google's
  platform-tools, pinned by SHA-256, and prunes what the server never
  uses. It replaces the Windows-only embeddable Python.
- The app runs the bundled Python with -I -u -B -X utf8, so a PYTHONHOME
  or PYTHONPATH meant for another Python can't break it and nothing is
  written inside the signed macOS bundle.
- An adb you already have still goes first, so two adb versions don't
  keep restarting each other's server. arm64 Linux has no official
  platform-tools and keeps using the system adb.
- ui/frame_apk.py reads APK badging (package, label, version, min SDK,
  ABIs, icon) from the binary manifest and resources.arsc, replacing
  aapt2. It matches aapt2 on nine F-Droid APKs and finds launcher icons
  the old path missed with adaptive icons.
- The app reads the computer's clipboard through Electron, so Linux no
  longer needs wl-clipboard or xclip.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

ui/frame_host.py

@@ -74,15 +74,12 @@ def install_hint(tool):
         "adb": {"mac": "brew install android-platform-tools",
                 "win": "winget install Google.PlatformTools",
                 "linux": "install your distribution's adb package (e.g. sudo apt install adb)"},
-        "aapt2": {"mac": 'brew install --cask android-commandlinetools, then sdkmanager "build-tools;36.0.0"',
-                  "win": 'install Android Studio\'s command-line tools, then sdkmanager "build-tools;36.0.0"',
-                  "linux": 'install Android\'s command-line tools, then sdkmanager "build-tools;36.0.0"'},
     }
     return hints[tool]["mac" if MAC else "win" if WINDOWS else "linux"]
 
 
 def android_sdk_dirs():
-    """Where the Android SDK usually lives, for adb and aapt2."""
+    """Where the Android SDK usually lives, for adb."""
     dirs = [os.environ.get("ANDROID_HOME"), os.environ.get("ANDROID_SDK_ROOT")]
     if MAC:
         dirs += ["~/Library/Android/sdk", "/opt/homebrew/share/android-commandlinetools",
@@ -99,6 +96,11 @@ def adb():
     extra = [os.path.join(d, "platform-tools", exe) for d in android_sdk_dirs()]
     if MAC:
         extra += ["/opt/homebrew/bin/adb", str(Path.home() / ".homebrew/bin/adb"), "/usr/local/bin/adb"]
+    # The app bundles adb as a last resort: an adb you already use goes first, so
+    # two different adb versions don't keep restarting each other's server.
+    tools = os.environ.get("FRAME_CONTROL_TOOLS")
+    if tools:
+        extra.append(os.path.join(tools, exe))
     env = os.environ.get("ADB")
     found = (env if env and os.access(env, os.X_OK) else None) or which("adb", *extra)
     if not found: