fix(api): skip API key prompt for local Ollama using noApiKey flag

Local Ollama doesn't require an API key, but the CLI was still
prompting for one. This adds a `noApiKey` flag to provider presets
to mark providers that don't need authentication.

- Add `noApiKey?: boolean` property to ProviderPreset interface
- Set `noApiKey: true` for local Ollama (no key needed)
- All other presets unchanged (default to requiring API key)
- Skip API key prompt and show info message when noApiKey is true

Co-Authored-By: Claude <noreply@anthropic.com>

src/api/services/provider-presets.ts

@@ -17,8 +17,8 @@ export interface ProviderPreset {
   apiKeyPlaceholder: string;
   apiKeyHint: string;
   category: PresetCategory;
-  /** Whether API key is required (false for local providers like Ollama) */
-  requiresApiKey?: boolean;
+  /** Set to true for local providers that don't need API key */
+  noApiKey?: boolean;
   /** Additional env vars for thinking mode, etc. */
   extraEnv?: Record<string, string>;
   /** Enable always thinking mode */
@@ -44,7 +44,6 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     apiKeyPlaceholder: 'sk-or-...',
     apiKeyHint: 'Get your API key at openrouter.ai/keys',
     category: 'recommended',
-    requiresApiKey: true,
   },
   {
     id: 'ollama',
@@ -56,7 +55,7 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     apiKeyPlaceholder: 'ollama',
     apiKeyHint: 'Install Ollama from ollama.com - no API key needed for local',
     category: 'recommended',
-    requiresApiKey: false,
+    noApiKey: true,
   },
   // Alternative providers
   {
@@ -156,7 +155,6 @@ export const PROVIDER_PRESETS: ProviderPreset[] = [
     apiKeyPlaceholder: 'YOUR_OLLAMA_CLOUD_API_KEY',
     apiKeyHint: 'Get your API key at ollama.com',
     category: 'alternative',
-    requiresApiKey: true,
   },
 ];