Refactor silent debugging to happy path error handling

- Replaced instances of silentDebug with happy_path_error__with_fallback across multiple files to improve error logging and handling.
- Updated the utility function to provide clearer semantics for error handling when expected values are missing.
- Introduced a script to find potential silent failures in the codebase that may need to be addressed with the new error handling approach.

src/utils/silent-debug.ts

@@ -1,25 +1,27 @@
 /**
- * Silent Debug Logger
+ * Happy Path Error With Fallback
+ *
+ * Semantic meaning: "When the happy path fails, this is an error, but we have a fallback."
  *
  * NOTE: This utility is to be used like Frank's Red Hot, we put that shit on everything.
  *
  * USE THIS INSTEAD OF SILENT FAILURES!
  * Stop doing this: `const value = something || '';`
- * Start doing this: `const value = something || silentDebug('something was undefined');`
+ * Start doing this: `const value = something || happy_path_error__with_fallback('something was undefined');`
  *
  * Logs to ~/.claude-mem/silent.log and returns a fallback value.
  * Check logs with `npm run logs:silent`
  *
  * Usage:
- *   import { silentDebug } from '../utils/silent-debug.js';
+ *   import { happy_path_error__with_fallback } from '../utils/silent-debug.js';
  *
- *   const title = obs.title || silentDebug('obs.title missing', { obs });
- *   const name = user.name || silentDebug('user.name missing', { user }, 'Anonymous');
+ *   const title = obs.title || happy_path_error__with_fallback('obs.title missing', { obs });
+ *   const name = user.name || happy_path_error__with_fallback('user.name missing', { user }, 'Anonymous');
  *
  *   try {
  *     doSomething();
  *   } catch (error) {
- *     silentDebug('doSomething failed', { error });
+ *     happy_path_error__with_fallback('doSomething failed', { error });
  *   }
  */
 
@@ -30,13 +32,13 @@ import { join } from 'path';
 const LOG_FILE = join(homedir(), '.claude-mem', 'silent.log');
 
 /**
- * Write a debug message to silent.log and return fallback value
- * @param message - The message to log
+ * Write an error message to silent.log and return fallback value
+ * @param message - Error message describing what went wrong
  * @param data - Optional data to include (will be JSON stringified)
  * @param fallback - Value to return (defaults to empty string)
  * @returns The fallback value (for use in || fallbacks)
  */
-export function silentDebug(message: string, data?: any, fallback: string = ''): string {
+export function happy_path_error__with_fallback(message: string, data?: any, fallback: string = ''): string {
   const timestamp = new Date().toISOString();
 
   // Capture stack trace to get caller location
@@ -51,7 +53,7 @@ export function silentDebug(message: string, data?: any, fallback: string = ''):
     ? `${callerMatch[1].split('/').pop()}:${callerMatch[2]}`
     : 'unknown';
 
-  let logLine = `[${timestamp}] [${location}] ${message}`;
+  let logLine = `[${timestamp}] [HAPPY-PATH-ERROR] [${location}] ${message}`;
 
   if (data !== undefined) {
     try {
@@ -84,3 +86,9 @@ export function clearSilentLog(): void {
     // Ignore errors
   }
 }
+
+/**
+ * @deprecated Use happy_path_error__with_fallback instead
+ * Backward compatibility alias for silentDebug
+ */
+export const silentDebug = happy_path_error__with_fallback;