fix: restore full-suite green — i18n parity (FN-7658) + chat core mock (FN-7675) + verification-followup-dedup (FN-7658) (#1965)

## Summary

Follow-up to #1947. The full-suite on `main` is still red on 3 surfaces
introduced by post-#1947 commits. This PR fixes the two real test
failures and the i18n parity gap.

## Fixes
- **i18n key parity (FN-7658)** —
`settings.scheduling.autoArchiveDuplicateTasks` + `...Help` were added
to `en` but not the 5 non-en catalogs, breaking the i18n parity gate
(`parity.test.ts`, `i18n-gate-coverage.test.ts`). Added the 2 keys
(empty-string per the untranslated-entry convention) to `zh-CN`,
`zh-TW`, `fr`, `es`, `ko` in `packages/i18n/locales` (the single source
of truth; `dashboard/app/locales` is gitignored and synced in CI).
- **chat.test.ts (FN-7675)** — `chat.ts` now imports
`FUSION_RUNTIME_SELF_AWARENESS` from `@fusion/core` (CHAT_SYSTEM_PROMPT
embeds it); the hand-written core mock didn't stub it, so the module
failed to load. Added a stub (importOriginal intentionally avoided to
preserve the fs-cascade block).
- **verification-followup-dedup.test.ts (FN-7658)** — the "remains
additive with FN-4892 same-agent duplicate intake" test asserts the
ARCHIVE path, but FN-7658 made same-agent auto-archiving opt-in
(`autoArchiveDuplicateTasksEnabled` defaults false → flag-in-place in
triage). The test now opts into the legacy archive behavior it asserts.

## Note on shard-2 engine[2/2] timeout
The full-suite shard 2 times out on `@fusion/engine [2/2]` (watchdog
900s). Locally `[2/2]` runs in ~96s and is green (the lone
`provider-registration.test.ts` failure is local-only `pi-ai@0.79.9`
staleness — the lockfile pins `0.80.3` which exports `/compat`, so CI
resolves it). The `verification-followup-dedup` failure above is the
only real `[2/2]` defect; this PR fixes it. If the CI timeout persists
it's aggregate real-git load, which I'll address separately (not a code
bug).

## Verification
- i18n `parity` + `i18n-gate-coverage`: 7/7 ✅
- `chat.test.ts`: 14/14 ✅
- `verification-followup-dedup`: 5/5 ✅
- engine `--shard=2/2` (excluding the local-staleness file): 363 files /
4483 tests ✅ in ~96s

No production behavior change; no changeset needed (i18n catalog +
test-only).

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

* **New Features**
* Added scheduling settings for automatic duplicate-task archiving,
including label and help text entries (currently placeholders) across
Spanish, French, Korean, Simplified Chinese, and Traditional Chinese.
* **Bug Fixes**
* Updated “awaiting confirmation” merger messaging to better reflect
when auto-merge proceeds automatically.
* **Tests**
* Updated reliability interaction tests to explicitly opt into legacy
duplicate-task archiving behavior.
* Adjusted chat-related tests by extending the runtime mock to satisfy a
new core import requirement.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.changeset/fn-7692-merger-confirmation-copy.md

@@ -2,6 +2,6 @@
 "@runfusion/fusion": patch
 ---
 
-summary: Fix misleading merger "awaiting-confirmation" copy that claimed a hard block when auto-merge advances the merge automatically.
+summary: Fix merger awaiting-confirmation copy that implied a hard block when auto-merge proceeds automatically.
 category: fix
 dev: `decidePlannerRecovery` now accepts an additive `autoMergeWillProceed` flag (threaded from `allowsAutoMergeProcessing` in `PlannerRecoveryController.tick`) that only shapes the confirmation `reason` string; no gating/behavior change to `action`/`requiresConfirmation`/`sideEffectClass`.

packages/dashboard/src/__tests__/chat.test.ts

@@ -26,6 +26,8 @@ vi.mock("node:fs/promises", async (importOriginal) => {
 // Mock @fusion/core to prevent cascade loading of real fs modules
 vi.mock("@fusion/core", () => ({
   summarizeTitle: vi.fn(),
+  // FNXC:DashboardChatTests 2026-07-08-12:00: FN-7675 added FUSION_RUNTIME_SELF_AWARENESS to chat.ts's @fusion/core imports (CHAT_SYSTEM_PROMPT embeds it). The hand-written core mock must stub it so chat.js loads; importOriginal is intentionally avoided to prevent the real fs cascade this mock exists to block.
+  FUSION_RUNTIME_SELF_AWARENESS: "",
   AgentStore: vi.fn(),
   ChatStore: vi.fn(),
   registerTraitHookImpl: vi.fn(),

packages/engine/src/__tests__/reliability-interactions/verification-followup-dedup.test.ts

@@ -195,6 +195,11 @@ describe("reliability interactions: verification follow-up dedup", () => {
   it("remains additive with FN-4892 same-agent duplicate intake", async () => {
     const fx = await createStore();
     fixtures.push(fx);
+    /*
+    FNXC:ReliabilityTests 2026-07-08-12:30:
+    FN-7658 gated same-agent duplicate auto-archiving behind autoArchiveDuplicateTasksEnabled (default false → flag-in-place in triage). This test asserts the ARCHIVE path is additive with verification follow-up dedup, so opt into the legacy archive behavior explicitly rather than asserting the new flag-in-place default.
+    */
+    await fx.store.updateSettings({ autoArchiveDuplicateTasksEnabled: true });
     const source = {
       sourceType: "api" as const,
       sourceAgentId: "agent-1",

packages/i18n/locales/es/app.json

@@ -6526,6 +6526,8 @@
       "addIgnoredPath": "",
       "archiveAgentLog": "",
       "archiveCompletedTasksAfterDays": "",
+      "autoArchiveDuplicateTasks": "",
+      "autoArchiveDuplicateTasksHelp": "",
       "backlogNoTaskAutoClaimIsExecutorOnly": "",
       "browse": "",
       "closeParenPeriod": "",

packages/i18n/locales/fr/app.json

@@ -6526,6 +6526,8 @@
       "addIgnoredPath": "",
       "archiveAgentLog": "",
       "archiveCompletedTasksAfterDays": "",
+      "autoArchiveDuplicateTasks": "",
+      "autoArchiveDuplicateTasksHelp": "",
       "backlogNoTaskAutoClaimIsExecutorOnly": "",
       "browse": "",
       "closeParenPeriod": "",

packages/i18n/locales/ko/app.json

@@ -6526,6 +6526,8 @@
       "addIgnoredPath": "",
       "archiveAgentLog": "",
       "archiveCompletedTasksAfterDays": "",
+      "autoArchiveDuplicateTasks": "",
+      "autoArchiveDuplicateTasksHelp": "",
       "backlogNoTaskAutoClaimIsExecutorOnly": "",
       "browse": "",
       "closeParenPeriod": "",

packages/i18n/locales/zh-CN/app.json

@@ -6526,6 +6526,8 @@
       "addIgnoredPath": "",
       "archiveAgentLog": "",
       "archiveCompletedTasksAfterDays": "",
+      "autoArchiveDuplicateTasks": "",
+      "autoArchiveDuplicateTasksHelp": "",
       "backlogNoTaskAutoClaimIsExecutorOnly": "",
       "browse": "",
       "closeParenPeriod": "",

packages/i18n/locales/zh-TW/app.json

@@ -6526,6 +6526,8 @@
       "addIgnoredPath": "",
       "archiveAgentLog": "",
       "archiveCompletedTasksAfterDays": "",
+      "autoArchiveDuplicateTasks": "",
+      "autoArchiveDuplicateTasksHelp": "",
       "backlogNoTaskAutoClaimIsExecutorOnly": "",
       "browse": "",
       "closeParenPeriod": "",