feat(FN-1445): add project-scoping and fallback handling for AI routes and missions

- Add projectId parameter to refineText API and TaskForm for proper scoping
- Update mission routes to require projectId and add regression tests
- Add mission interview fallback to mission-level context when target not found
- Add AI refine route scoping tests for project isolation
- Update component tests to expect projectId argument
- Update prompt-keys test counts for new system prompts

packages/dashboard/app/components/QuickEntryBox.tsx

@@ -919,7 +919,7 @@ export function QuickEntryBox({ onCreate, addToast, tasks = [], availableModels,
     setIsRefineMenuOpen(false);
     setIsRefining(true);
     try {
-      const refined = await refineText(trimmed, type);
+      const refined = await refineText(trimmed, type, projectId);
       setDescription(refined);
       addToast("Description refined with AI", "success");
       // Auto-resize textarea after content update
@@ -933,7 +933,7 @@ export function QuickEntryBox({ onCreate, addToast, tasks = [], availableModels,
     } finally {
       setIsRefining(false);
     }
-  }, [description, isRefining, addToast]);
+  }, [description, isRefining, addToast, projectId]);
 
   const truncate = (s: string, len: number) =>
     s.length > len ? s.slice(0, len) + "…" : s;

packages/dashboard/app/components/TaskForm.tsx

@@ -418,7 +418,7 @@ export function TaskForm({
 
     setIsRefining(true);
     try {
-      const refined = await refineText(trimmed, type);
+      const refined = await refineText(trimmed, type, projectId);
       onDescriptionChange(refined);
       setIsRefineMenuOpen(false);
       addToast("Description refined with AI", "success");
@@ -432,7 +432,7 @@ export function TaskForm({
     } finally {
       setIsRefining(false);
     }
-  }, [description, isRefining, addToast, onDescriptionChange]);
+  }, [description, isRefining, addToast, onDescriptionChange, projectId]);
 
   const handleToggleFavorite = useCallback(async (provider: string) => {
     const currentFavorites = favoriteProviders;

packages/dashboard/app/components/__tests__/QuickEntryBox.test.tsx

@@ -1665,7 +1665,7 @@ describe("QuickEntryBox", () => {
       fireEvent.click(screen.getByTestId("refine-clarify"));
 
       await waitFor(() => {
-        expect(refineText).toHaveBeenCalledWith("Original text", "clarify");
+        expect(refineText).toHaveBeenCalledWith("Original text", "clarify", TEST_PROJECT_ID);
       });
 
       // Textarea should be updated

packages/dashboard/app/components/__tests__/TaskForm.test.tsx

@@ -501,7 +501,8 @@ describe("TaskForm", () => {
     fireEvent.click(screen.getByTestId("refine-clarify"));
 
     await waitFor(() => {
-      expect(refineText).toHaveBeenCalledWith("Some text to refine", "clarify");
+      // projectId is undefined in this test context
+      expect(refineText).toHaveBeenCalledWith("Some text to refine", "clarify", undefined);
       expect(onDescriptionChange).toHaveBeenCalledWith("Refined text");
     });
   });