🤖 fix: clear pending workspace creation prompt (#721)

## Summary
- clear the project-scoped pending chat input once workspace creation
succeeds so the next creation flow starts blank
- wire the creation hook to reset the pending input key alongside mode &
thinking preference sync
- extend the corresponding hook test to assert the pending input key is
reset to an empty string

Author: ibetitsmike

src/browser/components/ChatInput/useCreationWorkspace.test.tsx

@@ -1,5 +1,11 @@
 import type { DraftWorkspaceSettings } from "@/browser/hooks/useDraftWorkspaceSettings";
-import { getModeKey, getProjectScopeId, getThinkingLevelKey } from "@/common/constants/storage";
+import {
+  getInputKey,
+  getModeKey,
+  getPendingScopeId,
+  getProjectScopeId,
+  getThinkingLevelKey,
+} from "@/common/constants/storage";
 import type { SendMessageError } from "@/common/types/errors";
 import type { BranchListResult, IPCApi, SendMessageOptions } from "@/common/types/ipc";
 import type { RuntimeMode } from "@/common/types/runtime";
@@ -219,8 +225,10 @@ describe("useCreationWorkspace", () => {
 
     const modeKey = getModeKey(TEST_WORKSPACE_ID);
     const thinkingKey = getThinkingLevelKey(TEST_WORKSPACE_ID);
+    const pendingInputKey = getInputKey(getPendingScopeId(TEST_PROJECT_PATH));
     expect(updatePersistedStateCalls).toContainEqual([modeKey, "plan"]);
     expect(updatePersistedStateCalls).toContainEqual([thinkingKey, "high"]);
+    expect(updatePersistedStateCalls).toContainEqual([pendingInputKey, ""]);
   });
 
   test("handleSend surfaces backend errors and resets state", async () => {

src/browser/components/ChatInput/useCreationWorkspace.ts

@@ -7,7 +7,13 @@ import { parseRuntimeString } from "@/browser/utils/chatCommands";
 import { useDraftWorkspaceSettings } from "@/browser/hooks/useDraftWorkspaceSettings";
 import { readPersistedState, updatePersistedState } from "@/browser/hooks/usePersistedState";
 import { useSendMessageOptions } from "@/browser/hooks/useSendMessageOptions";
-import { getModeKey, getProjectScopeId, getThinkingLevelKey } from "@/common/constants/storage";
+import {
+  getInputKey,
+  getModeKey,
+  getPendingScopeId,
+  getProjectScopeId,
+  getThinkingLevelKey,
+} from "@/common/constants/storage";
 import type { Toast } from "@/browser/components/ChatInputToast";
 import { createErrorToast } from "@/browser/components/ChatInputToasts";
 
@@ -119,6 +125,10 @@ export function useCreationWorkspace({
         // Check if this is a workspace creation result (has metadata field)
         if ("metadata" in result && result.metadata) {
           syncCreationPreferences(projectPath, result.metadata.id);
+          if (projectPath) {
+            const pendingInputKey = getInputKey(getPendingScopeId(projectPath));
+            updatePersistedState(pendingInputKey, "");
+          }
           // Settings are already persisted via useDraftWorkspaceSettings
           // Notify parent to switch workspace (clears input via parent unmount)
           onWorkspaceCreated(result.metadata);