fix: address Cubic P2 review - fake timers in tests, add opencode provider to glm-5

Replace real setTimeout(7000) with fake timer interception in atlas
retry tests (35s -> 227ms). Add missing opencode provider to glm-5
fallback in unspecified-high category.

src/cli/model-fallback-requirements.ts

@@ -272,7 +272,7 @@ export const CLI_CATEGORY_MODEL_REQUIREMENTS: Record<string, ModelRequirement> =
           model: "claude-opus-4-6",
           variant: "max",
         },
-        { providers: ["zai-coding-plan"], model: "glm-5" },
+        { providers: ["zai-coding-plan", "opencode"], model: "glm-5" },
         { providers: ["kimi-for-coding"], model: "k2p5" },
         { providers: ["opencode"], model: "kimi-k2.5" },
       ],

src/hooks/atlas/index.test.ts

@@ -1421,6 +1421,50 @@ describe("atlas hook", () => {
     })
 
     describe("delayed retry timer (abort-stuck fix)", () => {
+      const capturedTimers = new Map<number, { callback: Function; cleared: boolean }>()
+      let nextFakeId = 99000
+      const originalSetTimeout = globalThis.setTimeout
+      const originalClearTimeout = globalThis.clearTimeout
+
+      beforeEach(() => {
+        capturedTimers.clear()
+        nextFakeId = 99000
+
+        globalThis.setTimeout = ((callback: Function, delay?: number, ...args: unknown[]) => {
+          const normalized = typeof delay === "number" ? delay : 0
+          if (normalized >= 5000) {
+            const id = nextFakeId++
+            capturedTimers.set(id, { callback: () => callback(...args), cleared: false })
+            return id as unknown as ReturnType<typeof setTimeout>
+          }
+          return originalSetTimeout(callback as Parameters<typeof originalSetTimeout>[0], delay)
+        }) as unknown as typeof setTimeout
+
+        globalThis.clearTimeout = ((id?: number | ReturnType<typeof setTimeout>) => {
+          if (typeof id === "number" && capturedTimers.has(id)) {
+            capturedTimers.get(id)!.cleared = true
+            capturedTimers.delete(id)
+            return
+          }
+          originalClearTimeout(id as Parameters<typeof originalClearTimeout>[0])
+        }) as unknown as typeof clearTimeout
+      })
+
+      afterEach(() => {
+        globalThis.setTimeout = originalSetTimeout
+        globalThis.clearTimeout = originalClearTimeout
+      })
+
+      async function firePendingTimers(): Promise<void> {
+        for (const [id, entry] of capturedTimers) {
+          if (!entry.cleared) {
+            capturedTimers.delete(id)
+            await entry.callback()
+          }
+        }
+        await flushMicrotasks()
+      }
+
       test("should schedule delayed retry when cooldown blocks idle for incomplete boulder", async () => {
         // given - boulder with incomplete plan
         const planPath = join(TEST_DIR, "test-plan.md")
@@ -1445,12 +1489,10 @@ describe("atlas hook", () => {
           event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } },
         })
 
-        // then - wait for retry timer to fire (RETRY_DELAY_MS = 6000ms)
+        // then - fire pending timer and verify retry
-        await new Promise(resolve => setTimeout(resolve, 7000))
+        await firePendingTimers()
-        await flushMicrotasks()
-
         expect(mockInput._promptMock).toHaveBeenCalledTimes(2)
-      }, 15000)
+      })
 
       test("should not schedule duplicate retry timers for rapid idle events", async () => {
         // given - boulder with incomplete plan
@@ -1482,12 +1524,10 @@ describe("atlas hook", () => {
           event: { type: "session.idle", properties: { sessionID: MAIN_SESSION_ID } },
         })
 
-        // then - wait for retry timer, only one retry should fire
+        // then - only one retry fires despite multiple cooldown-blocked idles
-        await new Promise(resolve => setTimeout(resolve, 7000))
+        await firePendingTimers()
-        await flushMicrotasks()
-
         expect(mockInput._promptMock).toHaveBeenCalledTimes(2)
-      }, 15000)
+      })
 
       test("should not retry if plan completes before timer fires", async () => {
         // given - boulder with incomplete plan
@@ -1515,12 +1555,10 @@ describe("atlas hook", () => {
 
         writeFileSync(planPath, "# Plan\n- [x] Task 1\n- [x] Task 2")
 
-        // then - wait for retry timer, it should bail out seeing complete plan
+        // then - retry sees complete plan and bails out
-        await new Promise(resolve => setTimeout(resolve, 7000))
+        await firePendingTimers()
-        await flushMicrotasks()
-
         expect(mockInput._promptMock).toHaveBeenCalledTimes(1)
-      }, 15000)
+      })
 
       test("should cleanup pending retry timer on session.deleted", async () => {
         // given - boulder with incomplete plan, schedule retry timer
@@ -1550,12 +1588,10 @@ describe("atlas hook", () => {
           event: { type: "session.deleted", properties: { info: { id: MAIN_SESSION_ID } } },
         })
 
-        // then - wait for timer period, prompt should only have been called once
+        // then - timer was cleared, prompt called only once
-        await new Promise(resolve => setTimeout(resolve, 7000))
+        await firePendingTimers()
-        await flushMicrotasks()
-
         expect(mockInput._promptMock).toHaveBeenCalledTimes(1)
-      }, 15000)
+      })
 
       test("should cleanup pending retry timer on session.compacted", async () => {
         // given - boulder with incomplete plan, schedule retry timer
@@ -1585,12 +1621,10 @@ describe("atlas hook", () => {
           event: { type: "session.compacted", properties: { sessionID: MAIN_SESSION_ID } },
         })
 
-        // then - wait for timer period, prompt should only have been called once
+        // then - timer was cleared, prompt called only once
-        await new Promise(resolve => setTimeout(resolve, 7000))
+        await firePendingTimers()
-        await flushMicrotasks()
-
         expect(mockInput._promptMock).toHaveBeenCalledTimes(1)
-      }, 15000)
+      })
     })
   })
 })