test(shared): remove unsafe test assertions

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

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

src/openclaw/__tests__/config.test.ts

@@ -5,7 +5,7 @@ import { OpenClawConfigSchema } from "../../config/schema/openclaw"
 
 describe("OpenClaw Config", () => {
   test("resolveGateway resolves HTTP gateway", () => {
-    const config: OpenClawConfig = {
+    const config: OpenClawConfig = testCoerce({
       enabled: true,
       gateways: {
         discord: {
@@ -20,7 +20,7 @@ describe("OpenClaw Config", () => {
           instruction: "Started session {{sessionId}}",
         },
       },
-    } as any
+    })
 
     const resolved = resolveGateway(config, "session-start")
     expect(resolved).not.toBeNull()
@@ -30,31 +30,31 @@ describe("OpenClaw Config", () => {
   })
 
   test("resolveGateway returns null for disabled config", () => {
-    const config: OpenClawConfig = {
+    const config: OpenClawConfig = testCoerce({
       enabled: false,
       gateways: {},
       hooks: {},
-    } as any
+    })
     expect(resolveGateway(config, "session-start")).toBeNull()
   })
 
   test("resolveGateway returns null for unknown hook", () => {
-    const config: OpenClawConfig = {
+    const config: OpenClawConfig = testCoerce({
       enabled: true,
       gateways: {},
       hooks: {},
-    } as any
+    })
     expect(resolveGateway(config, "unknown")).toBeNull()
   })
 
   test("resolveGateway returns null for disabled hook", () => {
-    const config: OpenClawConfig = {
+    const config: OpenClawConfig = testCoerce({
       enabled: true,
       gateways: { g: { type: "http", url: "https://example.com" } },
       hooks: {
         event: { enabled: false, gateway: "g", instruction: "i" },
       },
-    } as any
+    })
     expect(resolveGateway(config, "event")).toBeNull()
   })
 

src/openclaw/__tests__/reply-listener-discord.test.ts

@@ -75,7 +75,7 @@ describe("pollDiscordReplies", () => {
         status: 401,
       }),
     ))
-    globalThis.fetch = fetchMock as unknown as typeof fetch
+    globalThis.fetch = testCoerce<typeof fetch>(fetchMock)
 
     const state = createState()
 
@@ -109,7 +109,7 @@ describe("pollDiscordReplies", () => {
         ),
       )
       .mockResolvedValueOnce(new Response(null, { status: 204 }))
-    globalThis.fetch = fetchMock as unknown as typeof fetch
+    globalThis.fetch = testCoerce<typeof fetch>(fetchMock)
     const lookupSpy = spyOn(sessionRegistryModule, "lookupByMessageId").mockReturnValue({
       sessionId: "ses-1",
       tmuxSession: "session-1",