test(hooks): remove unsafe test assertions

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

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

src/hooks/keyword-detector/hook-ralph-loop.test.ts

@@ -11,13 +11,13 @@ type StartLoopCall = {
 type CancelLoopCall = { sessionID: string }
 
 function createMockPluginInput() {
-  return {
+  return testCoerce({
     client: {
       tui: {
         showToast: async () => {},
       },
     },
-  } as any
+  })
 }
 
 function createMockRalphLoop(startLoopCalls: StartLoopCall[], cancelLoopCalls: CancelLoopCall[] = []) {

src/hooks/keyword-detector/hyperplan-ultrawork.test.ts

@@ -22,7 +22,7 @@ describe("keyword-detector hyperplan-ultrawork combo", () => {
 
   function createMockPluginInput(options: { toastCalls?: string[] } = {}) {
     const toastCalls = options.toastCalls ?? []
-    return {
+    return testCoerce<PluginInput>({
       client: {
         tui: {
           showToast: async (opts: { body: { title: string } }) => {
@@ -30,7 +30,7 @@ describe("keyword-detector hyperplan-ultrawork combo", () => {
           },
         },
       },
-    } as unknown as PluginInput
+    })
   }
 
   test("should inject combo message when user types 'hpp ulw' (forward order)", async () => {

src/hooks/keyword-detector/index.test.ts

@@ -881,13 +881,13 @@ describe("keyword-detector team mode", () => {
   })
 
   function createMockPluginInput() {
-    return {
+    return testCoerce<PluginInput>({
       client: {
         tui: {
           showToast: async () => {},
         },
       },
-    } as unknown as PluginInput
+    })
   }
 
   test("should inject team-mode message when user types 'team mode'", async () => {
@@ -1063,7 +1063,7 @@ describe("keyword-detector disabled_keywords config", () => {
 
   function createMockPluginInput(options: { toastCalls?: string[] } = {}) {
     const toastCalls = options.toastCalls ?? []
-    return {
+    return testCoerce<PluginInput>({
       client: {
         tui: {
           showToast: async (opts: { body: { title: string } }) => {
@@ -1071,7 +1071,7 @@ describe("keyword-detector disabled_keywords config", () => {
           },
         },
       },
-    } as unknown as PluginInput
+    })
   }
 
   test("should NOT inject search-mode when disabled_keywords includes 'search'", async () => {

src/hooks/keyword-detector/ultrawork-edge-trigger.test.ts

@@ -11,7 +11,7 @@ type StartLoopCall = {
 }
 
 function createMockPluginInput(toastCalls: string[] = []) {
-  return {
+  return testCoerce<PluginInput>({
     client: {
       tui: {
         showToast: async (opts: { body: { title: string } }) => {
@@ -19,7 +19,7 @@ function createMockPluginInput(toastCalls: string[] = []) {
         },
       },
     },
-  } as unknown as PluginInput
+  })
 }
 
 function createMockRalphLoop(startLoopCalls: StartLoopCall[]) {

src/hooks/keyword-detector/ultrawork-runtime-variant.test.ts

@@ -3,7 +3,7 @@ import { createKeywordDetectorHook } from "./index"
 import { _resetForTesting, setMainSession } from "../../features/claude-code-session-state"
 
 function createMockPluginInput(toastMessages: string[]) {
-  return {
+  return testCoerce({
     client: {
       tui: {
         showToast: async (opts: { body: { message: string } }) => {
@@ -11,7 +11,7 @@ function createMockPluginInput(toastMessages: string[]) {
         },
       },
     },
-  } as any
+  })
 }
 
 describe("keyword-detector ultrawork runtime variant gating", () => {