FN-7607: fix manual PR flow gating to key off global auto-merge setting

Fixes TaskDetailModal so manual PR affordances stay visible based on the live global auto-merge setting rather than the per-task effective override, and repairs a pre-existing test regression from the FN-7510 oversight default change.

- isManualPrFlow now checks mergeStrategy === "pull-request" && !autoMergeEnabled (live global setting) instead of the per-task effective auto-merge override, fixing a regression from FN-7255 that stranded users without manual PR controls when a task's auto-merge override was true but global auto-merge was off.
- Pinned plannerOversightLevel: "off" on the Chat-first default-routing test fixture so the FN-7510 autonomous-oversight default doesn't add an extra Activity-view option and break the test's actual intent (asserting Chat-first tab routing).
- Added changeset documenting the fix.

Files changed:
 .changeset/fn-7607-manual-pr-flow.md                       |  7 +++++++
 packages/dashboard/app/components/TaskDetailModal.tsx      | 14 +++++++++++++-
 .../TaskDetailModal.attachments-and-tabs.test.tsx          | 12 +++++++++++-
 3 files changed, 31 insertions(+), 2 deletions(-)

Fusion-Task-Id: FN-7607

Fusion-Task-Lineage: f0b077d4-792f-4e43-8e40-43d325920be5

Co-authored-by: Fusion (runfusion.ai) <noreply@runfusion.ai>

.changeset/fn-7607-manual-pr-flow.md

@@ -0,0 +1,7 @@
+---
+"@runfusion/fusion": patch
+---
+
+summary: Fix manual PR actions hidden when a task auto-merge override was on but global auto-merge was off.
+category: fix
+dev: TaskDetailModal isManualPrFlow now keys off live global autoMergeEnabled, not the per-task effective override (regression from FN-7255).

packages/dashboard/app/components/TaskDetailModal.tsx

@@ -3130,7 +3130,19 @@ export function TaskDetailContent({
   const mergeStrategy = settings?.mergeStrategy ?? "direct";
   const autoMergeEnabled = autoMergeEnabledProp ?? (settings?.autoMerge ?? false);
   const effectiveAutoMerge = resolveEffectiveAutoMerge({ autoMerge: task.autoMerge }, { autoMerge: autoMergeEnabled });
-  const isManualPrFlow = mergeStrategy === "pull-request" && !effectiveAutoMerge;
+  /*
+  FNXC:TaskDetailPr 2026-07-05-19:45:
+  Manual PR flow visibility must follow the LIVE GLOBAL auto-merge setting
+  (`autoMergeEnabled`), not the per-task effective auto-merge override
+  (`effectiveAutoMerge`). Otherwise a per-task auto-merge override of `true`
+  hides manual PR affordances even when global auto-merge is off, stranding
+  the user with no way to manually open/manage the PR (FN-7607; regression
+  introduced by FN-7255 / commit 924bcb97d, which switched this from
+  `!autoMergeEnabled` to `!effectiveAutoMerge`). The `autoMerge` prop passed
+  to PrPanel stays `effectiveAutoMerge` — only this flow-gating boolean is
+  keyed off the live global setting.
+  */
+  const isManualPrFlow = mergeStrategy === "pull-request" && !autoMergeEnabled;
   /*
   FNXC:PlannerOversight 2026-07-04-17:00:
   FN-7517 enablement rules for the nudge/stop/explain controls. Nudge and

packages/dashboard/app/components/__tests__/TaskDetailModal.attachments-and-tabs.test.tsx

@@ -483,9 +483,19 @@ describe("TaskDetailModal", () => {
 
   describe("tab toggle", () => {
     it("restores planner Chat as the omitted non-done default when Chat-first is enabled", () => {
+      /*
+      FNXC:PlannerOversight 2026-07-05-19:45:
+      FN-7510 made DEFAULT_PLANNER_OVERSIGHT_LEVEL = "autonomous", so a task
+      fixture with no per-task override and no resolvable workflow now
+      legitimately resolves oversight-active, which surfaces an additional
+      "Interventions" Activity-view option. This test's intent is to assert
+      Chat-first default routing (the omitted-tab default lands on Chat), not
+      oversight gating, so pin plannerOversightLevel: "off" to keep the
+      three-label Activity-view assertion meaningful and honest (FN-7607).
+      */
       const { container } = render(
         <TaskDetailModal
-          task={makeTask({ prompt: "# Hello\n\nContent" })}
+          task={makeTask({ prompt: "# Hello\n\nContent", plannerOversightLevel: "off" })}
           taskDetailChatFirst
           onClose={noop}
           onMoveTask={noopMove}