refactor: rename project to LedGrab, split HA integration into separate repo

- Rename Python package: wled_controller -> ledgrab
- Rename env var prefix: WLED_ -> LEDGRAB_ (with auto-migration for old vars)
- Rename localStorage key: wled_api_key -> ledgrab_api_key (with migration)
- Rename HA integration domain: wled_screen_controller -> ledgrab
- Update all imports, build scripts, Docker, installer, config, docs
- Remove HA integration (moved to ledgrab-haos-integration repo)
- Remove hacs.json (belongs in HA repo now)
- Add startup warning for users with old WLED_ env vars
- All tests pass (715/715), ruff clean, tsc clean, frontend builds

server/Dockerfile

@@ -4,7 +4,7 @@ WORKDIR /build
 COPY package.json package-lock.json* ./
 RUN npm ci --ignore-scripts
 COPY esbuild.mjs tsconfig.json ./
-COPY src/wled_controller/static/ ./src/wled_controller/static/
+COPY src/ledgrab/static/ ./src/ledgrab/static/
 RUN npm run build
 
 ## Stage 2: Python application
@@ -16,8 +16,8 @@ LABEL maintainer="Alexei Dolgolyov <dolgolyov.alexei@gmail.com>"
 LABEL org.opencontainers.image.title="LED Grab"
 LABEL org.opencontainers.image.description="Ambient lighting system that captures screen content and drives LED strips in real time"
 LABEL org.opencontainers.image.version="${APP_VERSION}"
-LABEL org.opencontainers.image.url="https://git.dolgolyov-family.by/alexei.dolgolyov/wled-screen-controller-mixed"
-LABEL org.opencontainers.image.source="https://git.dolgolyov-family.by/alexei.dolgolyov/wled-screen-controller-mixed"
+LABEL org.opencontainers.image.url="https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab"
+LABEL org.opencontainers.image.source="https://git.dolgolyov-family.by/alexei.dolgolyov/ledgrab"
 LABEL org.opencontainers.image.licenses="MIT"
 
 WORKDIR /app
@@ -37,16 +37,16 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
 # The real source is copied afterward, keeping the dep layer cached.
 COPY pyproject.toml .
 RUN sed -i "s/^version = .*/version = \"${APP_VERSION}\"/" pyproject.toml \
-    && mkdir -p src/wled_controller && touch src/wled_controller/__init__.py \
+    && mkdir -p src/ledgrab && touch src/ledgrab/__init__.py \
     && pip install --no-cache-dir ".[notifications]" \
-    && rm -rf src/wled_controller
+    && rm -rf src/ledgrab
 
 # Copy source code and config (invalidates cache only when source changes)
 COPY src/ ./src/
 COPY config/ ./config/
 
 # Copy built frontend bundle from stage 1
-COPY --from=frontend /build/src/wled_controller/static/dist/ ./src/wled_controller/static/dist/
+COPY --from=frontend /build/src/ledgrab/static/dist/ ./src/ledgrab/static/dist/
 
 # Create non-root user for security
 RUN groupadd --gid 1000 ledgrab \
@@ -67,4 +67,4 @@ HEALTHCHECK --interval=30s --timeout=10s --start-period=10s --retries=3 \
 ENV PYTHONPATH=/app/src
 
 # Run the application
-CMD ["uvicorn", "wled_controller.main:app", "--host", "0.0.0.0", "--port", "8080"]
+CMD ["uvicorn", "ledgrab.main:app", "--host", "0.0.0.0", "--port", "8080"]