feat(FN-5208): guard soft-delete resurrection across upsert and triage writ

FN-5208 hardens the soft-delete boundary in the task store by adding read guards that block access to deleted tasks, write guards that reject upserts and triage mutations against deleted task IDs, and a resurrection guard that aborts re-enqueue of archived tasks back into `triage`/`todo`. The core l

Fusion-Task-Id: FN-5208

packages/dashboard/app/components/__tests__/settings-mobile.test.tsx

@@ -42,6 +42,7 @@ const defaultSettings = {
 
 vi.mock("../../api", () => ({
   fetchProjects: vi.fn(() => Promise.resolve([])),
+  fetchGitRemotes: vi.fn(() => Promise.resolve({ remotes: [] })),
   fetchSettings: vi.fn(() => Promise.resolve({ ...defaultSettings })),
   fetchSettingsByScope: vi.fn(() => Promise.resolve({ global: { ...defaultSettings }, project: {} })),
   updateSettings: vi.fn(() => Promise.resolve({ ...defaultSettings })),