feat: integrate settings service for auto-load CLAUDE.md functionality

- Updated API routes to accept an optional settings service for loading the autoLoadClaudeMd setting.
- Introduced a new settings helper utility for retrieving project-specific settings.
- Enhanced feature generation and spec generation processes to utilize the autoLoadClaudeMd setting.
- Refactored relevant route handlers to support the new settings integration across various endpoints.

libs/types/src/provider.ts

@@ -19,6 +19,15 @@ export interface ConversationMessage {
   content: string | Array<{ type: string; text?: string; source?: object }>;
 }
 
+/**
+ * System prompt preset configuration for CLAUDE.md auto-loading
+ */
+export interface SystemPromptPreset {
+  type: 'preset';
+  preset: 'claude_code';
+  append?: string;
+}
+
 /**
  * Options for executing a query via a provider
  */
@@ -26,13 +35,14 @@ export interface ExecuteOptions {
   prompt: string | Array<{ type: string; text?: string; source?: object }>;
   model: string;
   cwd: string;
-  systemPrompt?: string;
+  systemPrompt?: string | SystemPromptPreset;
   maxTurns?: number;
   allowedTools?: string[];
   mcpServers?: Record<string, unknown>;
   abortController?: AbortController;
   conversationHistory?: ConversationMessage[]; // Previous messages for context
   sdkSessionId?: string; // Claude SDK session ID for resuming conversations
+  settingSources?: Array<'user' | 'project' | 'local'>; // Sources for CLAUDE.md loading
 }
 
 /**