Merge tool health drain repair into Discord command scheduling

Co-Authored-By: Paperclip <noreply@paperclip.ing>

* codex/sleep-18-tool-connection-health:
  fix(server): release settled tool health intent during drain

server/src/__tests__/tool-connection-health-work.test.ts

@@ -185,8 +185,11 @@ const support = external ? { supported: true } : await getEmbeddedPostgresTestSu
   });
   it("retains first writes through drain without querying", async () => {
     await start(); await quiet(); draining = true; await connection();
+    await vi.waitFor(async () => { await vi.advanceTimersByTimeAsync(1000); expect(idleWorkSnapshot().active).toBe(0); });
+    const drained = idleWorkSnapshot();
     const reads = vi.spyOn(db, "select"); await vi.advanceTimersByTimeAsync(60_000);
-    expect(reads).not.toHaveBeenCalled(); reads.mockRestore(); expect(probe).not.toHaveBeenCalled();
+    expect(reads).not.toHaveBeenCalled(); expect(idleWorkSnapshot()).toEqual(drained);
+    reads.mockRestore(); expect(probe).not.toHaveBeenCalled();
     draining = false; await checked();
   });
   it("moves the deadline when an actual-use health observation commits", async () => {

server/src/services/tool-connection-health-work.ts

@@ -82,7 +82,9 @@ export function registerToolConnectionHealthWork(
       if (due.length > batch.entries.length) earliest = Date.now() + 1_000;
       if (errors.length) throw new AggregateError(errors, "Tool connection health checks could not settle");
     },
-    hasPending: async () => dirty.size > 0,
+    // Keep the hints/deadlines for resume, but release settled intent while
+    // paused. The coordinator independently fences unresolved transactions.
+    hasPending: async () => canRun() && dirty.size > 0,
     nextRunAt: next,
   });
 }