fix: QA sweep — 7 bugs fixed, 17 test corrections

Code fixes:
- Sidebar state bleed: reset file store on HomePage mount
- restore-photo: raise error instead of silently skipping colorize
  when DDColor model missing
- PaddleOCR OOM: cap input images to 2048px before OCR inference
- Torch CPU optimization: use --index-url .../whl/cpu on CPU nodes

Test fixes:
- upscale: add exact:true to scale factor button locators
- smart-crop: add exact:true to "Pad to square" locator
- colorize: use regex for model button names (Best/Balanced/Fast)
- enhance-faces: use .first() for ambiguous percentage display
- passport-photo: fix DPI locator, .or() compound, generate fallback
- people: update maxUsers assertions for unlimited (0) default
- automate: "Save Pipeline" → "Save" matching actual button text
- tools.test: add resize to Sharp mock chain for OCR tests

apps/web/src/pages/home-page.tsx

@@ -27,6 +27,10 @@ export function HomePage() {
   const { fetch: fetchSettings, defaultToolView, loaded: settingsLoaded } = useSettingsStore();
   const { fetch: fetchFeatures, isToolInstalled } = useFeaturesStore();
 
+  useEffect(() => {
+    reset();
+  }, [reset]);
+
   useEffect(() => {
     fetchSettings();
     fetchFeatures();