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/no-hephaestus-non-gpt/index.test.ts

@@ -19,9 +19,9 @@ describe("no-hephaestus-non-gpt hook", () => {
   test("shows toast on every chat.message when hephaestus uses non-gpt model", async () => {
     // given - hephaestus with claude model
     const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
-    const hook = createNoHephaestusNonGptHook({
+    const hook = createNoHephaestusNonGptHook(testCoerce({
       client: { tui: { showToast } },
-    } as any)
+    }))
 
     const output1 = createOutput()
     const output2 = createOutput()
@@ -54,9 +54,9 @@ describe("no-hephaestus-non-gpt hook", () => {
   test("shows warning and does not switch agent when allow_non_gpt_model is enabled", async () => {
     // given - hephaestus with claude model and opt-out enabled
     const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
-    const hook = createNoHephaestusNonGptHook({
+    const hook = createNoHephaestusNonGptHook(testCoerce({
       client: { tui: { showToast } },
-    } as any, {
+    }), {
       allowNonGptModel: true,
     })
 
@@ -83,9 +83,9 @@ describe("no-hephaestus-non-gpt hook", () => {
   test("does not show toast when hephaestus uses gpt model", async () => {
     // given - hephaestus with gpt model
     const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
-    const hook = createNoHephaestusNonGptHook({
+    const hook = createNoHephaestusNonGptHook(testCoerce({
       client: { tui: { showToast } },
-    } as any)
+    }))
 
     const output = createOutput()
 
@@ -104,9 +104,9 @@ describe("no-hephaestus-non-gpt hook", () => {
   test("does not show toast for non-hephaestus agent", async () => {
     // given - sisyphus with claude model (non-gpt)
     const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
-    const hook = createNoHephaestusNonGptHook({
+    const hook = createNoHephaestusNonGptHook(testCoerce({
       client: { tui: { showToast } },
-    } as any)
+    }))
 
     const output = createOutput()
 
@@ -127,9 +127,9 @@ describe("no-hephaestus-non-gpt hook", () => {
     _resetForTesting()
     updateSessionAgent("ses_4", HEPHAESTUS_DISPLAY)
     const showToast = spyOn({ fn: async (_input: unknown) => ({}) }, "fn")
-    const hook = createNoHephaestusNonGptHook({
+    const hook = createNoHephaestusNonGptHook(testCoerce({
       client: { tui: { showToast } },
-    } as any)
+    }))
 
     const output = createOutput()