test(tools): remove unsafe test assertions

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

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

src/tools/call-omo-agent/agent-resolver.test.ts

@@ -2,7 +2,7 @@ const { describe, test, expect, mock, beforeEach } = require("bun:test")
 const { resolveCallableAgents, clearCallableAgentsCache } = require("./agent-resolver")
 const { ALLOWED_AGENTS } = require("./constants")
 
-function createMockClient(agents = []) {
+function createMockClient(agents: Array<Record<string, string>> = []) {
   return {
     app: {
       agents: mock(() => Promise.resolve({ data: agents })),

src/tools/call-omo-agent/session-creator.test.ts

@@ -37,12 +37,12 @@ describe("call-omo-agent createOrGetSession", () => {
     }
 
     // when
-    const result = await createOrGetSession(args as any, toolContext as any, ctx as any)
+    const result = await createOrGetSession(testCoerce(args), testCoerce(toolContext), testCoerce(ctx))
 
     // then
     expect(result).toEqual({ sessionID: "ses_child", isNew: true })
     expect(createCalls).toHaveLength(1)
-    const createBody = (createCalls[0] as any)?.body
+    const createBody = (testCoerce(createCalls[0]))?.body
     expect(createBody?.parentID).toBe("ses_parent")
     expect(createBody?.permission).toBeUndefined()
     expect(subagentSessions.has("ses_child")).toBe(true)

src/tools/call-omo-agent/subagent-session-creator.test.ts

@@ -19,7 +19,7 @@ describe("call-omo-agent resolveOrCreateSessionId", () => {
     const { parentDirectory, contextDirectory } = options
     const parentSessionData = parentDirectory ? { data: { directory: parentDirectory } } : { data: {} }
 
-    const ctx = {
+    const ctx = testCoerce<Parameters<typeof resolveOrCreateSessionId>[0]>({
       directory: contextDirectory,
       client: {
         session: {
@@ -31,7 +31,7 @@ describe("call-omo-agent resolveOrCreateSessionId", () => {
           },
         },
       },
-    } as unknown as Parameters<typeof resolveOrCreateSessionId>[0]
+    })
 
     const args = {
       description: "sync test",

src/tools/call-omo-agent/sync-executor.test.ts

@@ -389,7 +389,7 @@ describe("executeSync", () => {
     }
 
     //#when
-    await executeSync(args, toolContext, ctx as any, deps, undefined, spawnReservation)
+    await executeSync(args, toolContext, testCoerce(ctx), deps, undefined, spawnReservation)
 
     //#then
     expect(spawnReservation.commit).toHaveBeenCalledTimes(1)

src/tools/call-omo-agent/sync-executor.ts

@@ -14,6 +14,10 @@ type SessionWithPromptAsync = {
   promptAsync: (opts: { path: { id: string }; body: Record<string, unknown> }) => Promise<unknown>
 }
 
+function hasPromptAsync(session: PluginInput["client"]["session"]): session is PluginInput["client"]["session"] & SessionWithPromptAsync {
+  return "promptAsync" in session && typeof session.promptAsync === "function"
+}
+
 type ExecuteSyncDeps = {
   createOrGetSession: typeof createOrGetSession
   waitForCompletion: typeof waitForCompletion
@@ -102,7 +106,11 @@ export async function executeSync(
     const normalizedSubagentType = stripAgentListSortPrefix(args.subagent_type)
 
     try {
-      await (ctx.client.session as unknown as SessionWithPromptAsync).promptAsync({
+      if (!hasPromptAsync(ctx.client.session)) {
+        return `Error: Failed to send prompt: promptAsync is not available on this OpenCode client.\n\n<task_metadata>\nsession_id: ${sessionID}\n</task_metadata>`
+      }
+
+      await ctx.client.session.promptAsync({
         path: { id: sessionID },
         body: {
           agent: normalizedSubagentType,