fix(ci): resolve mock.module() cross-file leakage in test suite

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/shared/log-legacy-plugin-startup-warning.test.ts

@@ -37,7 +37,10 @@ afterAll(() => {
 })
 
 async function importFreshStartupWarningModule(): Promise<typeof import("./log-legacy-plugin-startup-warning")> {
-  return import(`./log-legacy-plugin-startup-warning?test=${Date.now()}-${Math.random()}`)
+  const module = await import(`./log-legacy-plugin-startup-warning?test=${Date.now()}-${Math.random()}`)
+  mock.restore()
+  consoleWarnSpy = spyOn(console, "warn").mockImplementation(() => {})
+  return module
 }
 
 describe("logLegacyPluginStartupWarning", () => {

src/shared/model-capabilities.test.ts

@@ -1,3 +1,4 @@
+import type { ModelCapabilitiesSnapshot } from "./model-capabilities"
 import { afterAll, describe, expect, test, mock } from "bun:test"
 
 // Mock connected-providers-cache to prevent local disk cache from polluting test results.
@@ -14,11 +15,8 @@ afterAll(() => {
   mock.restore()
 })
 
-import {
-  getModelCapabilities,
-  getBundledModelCapabilitiesSnapshot,
-  type ModelCapabilitiesSnapshot,
-} from "./model-capabilities"
+const { getModelCapabilities, getBundledModelCapabilitiesSnapshot } = await import("./model-capabilities")
+mock.restore()
 import { AGENT_MODEL_REQUIREMENTS, CATEGORY_MODEL_REQUIREMENTS } from "./model-requirements"
 
 describe("getModelCapabilities", () => {

src/shared/model-error-classifier.test.ts

@@ -9,7 +9,8 @@ mock.module("./connected-providers-cache", () => ({
 
 afterAll(() => { mock.restore() })
 
-import { shouldRetryError, selectFallbackProvider } from "./model-error-classifier"
+const { shouldRetryError, selectFallbackProvider } = await import("./model-error-classifier")
+mock.restore()
 
 describe("model-error-classifier", () => {
   beforeEach(() => {
@@ -107,3 +108,5 @@ describe("model-error-classifier", () => {
     expect(result).toBe(true)
   })
 })
+
+export {}