Refactor summary and context handling in hooks

- Updated `summary-hook.js` to improve logging and session handling.
- Modified `context.ts` to fetch recent sessions with status and summary info, enhancing output formatting.
- Added new methods in `HooksDatabase.ts` for retrieving recent sessions and their summaries.
- Improved observation retrieval logic in `context.ts` to display relevant information for active sessions.
- Enhanced prompt documentation in `prompts.ts` to clarify output expectations.
- Refactored logger methods in `logger.ts` to instance methods for better encapsulation.

src/utils/logger.ts

@@ -36,14 +36,14 @@ class Logger {
   /**
    * Create correlation ID for tracking an observation through the pipeline
    */
-  static correlationId(sessionId: number, observationNum: number): string {
+  correlationId(sessionId: number, observationNum: number): string {
     return `obs-${sessionId}-${observationNum}`;
   }
 
   /**
    * Create session correlation ID
    */
-  static sessionId(sessionId: number): string {
+  sessionId(sessionId: number): string {
     return `session-${sessionId}`;
   }