fix: resolve QA report issues across routing, editor, i18n, and pipeline

- Add /tools/:toolId legacy redirect and catch-all 404 page (P1-12, P1-13)
- Add Shift+O dodge/burn/sponge cycle and Ctrl+Y redo shortcut (P1-3, P1-4)
- Fix Fit on Screen menu action to properly compute fit zoom (P1-8)
- Add filename input to editor export dialog (P1-2)
- Fix password validation mismatch: frontend now requires 8 chars (P1-11)
- Add license info to Settings About section (P1-9)
- Replace hardcoded strings in dropzone, files, pipeline with i18n keys (P1-17 to P1-25)
- Add 20+ missing i18n keys to all 21 locale files
- Translate Japanese editor.shapes and settings.aiFeatures sections (P1-19, P1-20)
- Fix RTL: use logical CSS properties in sidebar, files, app-layout (P2-24 to P2-26)
- Add single-file download button to pipeline results (P1-28)
- Fix compress step settings restoration on pipeline load (P1-27)
- Increase mobile nav touch targets to 44px minimum (P2-29)

apps/web/src/hooks/use-editor-shortcuts.ts

@@ -41,6 +41,8 @@ const SHAPE_CYCLE: ToolType[] = [
   "shape-polygon",
   "shape-star",
 ];
+// Dodge/burn/sponge cycle
+const DODGE_CYCLE: ToolType[] = ["dodge", "burn", "sponge"];
 // Fill/gradient cycle
 const FILL_CYCLE: ToolType[] = ["fill", "gradient"];
 
@@ -199,12 +201,29 @@ export function useEditorShortcuts(callbacks?: {
     { preventDefault: true },
   );
 
-  // O - Dodge tool
+  // O - Dodge/Burn/Sponge (cycles)
   useHotkeys(
     "o",
     () => {
       if (isInputFocused()) return;
-      useEditorStore.getState().setTool("dodge");
+      const current = useEditorStore.getState().activeTool;
+      if (DODGE_CYCLE.includes(current)) {
+        useEditorStore.getState().setTool(cycleSubtool(current, DODGE_CYCLE));
+      } else {
+        useEditorStore.getState().setTool("dodge");
+      }
+    },
+    { preventDefault: true },
+  );
+
+  // Shift+O - Cycle dodge/burn/sponge subtypes
+  useHotkeys(
+    "shift+o",
+    () => {
+      if (isInputFocused()) return;
+      useEditorStore
+        .getState()
+        .setTool(cycleSubtool(useEditorStore.getState().activeTool, DODGE_CYCLE));
     },
     { preventDefault: true },
   );
@@ -361,6 +380,16 @@ export function useEditorShortcuts(callbacks?: {
     { preventDefault: true },
   );
 
+  // Ctrl+Y / Cmd+Y - Redo (alternative)
+  useHotkeys(
+    "mod+y",
+    (e) => {
+      e.preventDefault();
+      useEditorStore.temporal.getState().redo();
+    },
+    { preventDefault: true },
+  );
+
   // Ctrl+S / Cmd+S - Save project
   useHotkeys(
     "mod+s",