feat: add auto-update system with release checking, notification UI, and install-type-aware apply

- Abstract ReleaseProvider interface (Gitea impl, swappable for GitHub/GitLab)
- Background UpdateService with periodic checks, debounce, dismissed version persistence
- Install type detection (installer/portable/docker/dev) with platform-aware asset matching
- Download with progress events, silent NSIS reinstall, portable ZIP/tarball swap scripts
- Version badge pulse animation, dismissible banner with icon buttons, Settings > Updates tab
- Single source of truth: pyproject.toml version via importlib.metadata, CI stamps tag with sed
- API: GET/POST status, check, dismiss, apply, GET/PUT settings
- i18n: en, ru, zh (27+ keys each)

build-dist-windows.sh

@@ -33,12 +33,16 @@ if [ -z "$VERSION" ]; then
     VERSION="${GITEA_REF_NAME:-${GITHUB_REF_NAME:-}}"
 fi
 if [ -z "$VERSION" ]; then
-    VERSION=$(grep -oP '__version__\s*=\s*"\K[^"]+' "$SERVER_DIR/src/wled_controller/__init__.py" 2>/dev/null || echo "0.0.0")
+    VERSION=$(grep -oP '^version\s*=\s*"\K[^"]+' "$SERVER_DIR/pyproject.toml" 2>/dev/null || echo "0.0.0")
 fi
 
 VERSION_CLEAN="${VERSION#v}"
 ZIP_NAME="LedGrab-v${VERSION_CLEAN}-win-x64.zip"
 
+# Stamp the resolved version into pyproject.toml so that
+# importlib.metadata reads the correct value at runtime.
+sed -i "s/^version = .*/version = \"${VERSION_CLEAN}\"/" "$SERVER_DIR/pyproject.toml"
+
 echo "=== Cross-building LedGrab v${VERSION_CLEAN} (Windows from Linux) ==="
 echo "  Embedded Python: $PYTHON_VERSION"
 echo "  Output: build/$ZIP_NAME"