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

build-common.sh

@@ -143,8 +143,8 @@ cleanup_site_packages() {
         find "$sp_dir" -name "*.$ext_suffix" -exec strip --strip-debug {} \; 2>/dev/null || true
     fi
 
-    # ── Remove wled_controller if pip-installed ───────────────
-    rm -rf "$sp_dir"/wled_controller* "$sp_dir"/wled*.dist-info 2>/dev/null || true
+    # ── Remove ledgrab if pip-installed ───────────────
+    rm -rf "$sp_dir"/ledgrab* "$sp_dir"/ledgrab*.dist-info 2>/dev/null || true
 
     local cleaned_size
     cleaned_size=$(du -sh "$sp_dir" | cut -f1)
@@ -191,7 +191,7 @@ compile_and_strip_sources() {
 
 # ── Import smoke test ────────────────────────────────────────
 #
-# Verifies that every top-level dependency that wled_controller actually
+# Verifies that every top-level dependency that ledgrab actually
 # uses can be imported from the stripped site-packages. Catches regressions
 # where cleanup_site_packages removes a submodule that turns out to be
 # imported internally by the package (e.g. numpy.linalg, zeroconf._services).
@@ -200,7 +200,7 @@ compile_and_strip_sources() {
 # Args:
 #   $1 — path to site-packages to test against
 #   $2 — python executable
-#   $3 — (optional) extra PYTHONPATH entry (e.g. app/src for wled_controller)
+#   $3 — (optional) extra PYTHONPATH entry (e.g. app/src for ledgrab)
 
 smoke_test_imports() {
     local sp_dir="$1"