feat(ui): Enhance AI model handling with Cursor support

- Refactor model handling to support both Claude and Cursor models across various components.
- Introduce `stripProviderPrefix` utility for consistent model ID processing.
- Update `CursorProvider` to utilize `isCursorModel` for model validation.
- Implement model override functionality in GitHub issue validation and enhancement routes.
- Add `useCursorStatusInit` hook to initialize Cursor CLI status on app startup.
- Update UI components to reflect changes in model selection and validation processes.

This update improves the flexibility of AI model usage and enhances user experience by allowing quick model overrides.

libs/model-resolver/src/resolver.ts

@@ -8,7 +8,14 @@
  * - Handles multiple model sources with priority
  */
 
-import { CLAUDE_MODEL_MAP, CURSOR_MODEL_MAP, DEFAULT_MODELS } from '@automaker/types';
+import {
+  CLAUDE_MODEL_MAP,
+  CURSOR_MODEL_MAP,
+  DEFAULT_MODELS,
+  PROVIDER_PREFIXES,
+  isCursorModel,
+  stripProviderPrefix,
+} from '@automaker/types';
 
 /**
  * Resolve a model key/alias to a full model string
@@ -33,8 +40,8 @@ export function resolveModelString(
 
   // Cursor model with explicit prefix (e.g., "cursor-composer-1") - pass through unchanged
   // CursorProvider will strip the prefix when calling the CLI
-  if (modelKey.startsWith('cursor-')) {
-    const cursorModelId = modelKey.replace('cursor-', '');
+  if (modelKey.startsWith(PROVIDER_PREFIXES.cursor)) {
+    const cursorModelId = stripProviderPrefix(modelKey);
     // Verify it's a valid Cursor model
     if (cursorModelId in CURSOR_MODEL_MAP) {
       console.log(
@@ -50,7 +57,7 @@ export function resolveModelString(
   // Check if it's a bare Cursor model ID (e.g., "composer-1", "auto", "gpt-4o")
   if (modelKey in CURSOR_MODEL_MAP) {
     // Return with cursor- prefix so provider routing works correctly
-    const prefixedModel = `cursor-${modelKey}`;
+    const prefixedModel = `${PROVIDER_PREFIXES.cursor}${modelKey}`;
     console.log(
       `[ModelResolver] Detected bare Cursor model ID: "${modelKey}" -> "${prefixedModel}"`
     );