feat: v1.1.0 release - session ID tracking, async hooks, new skills

- Add session ID to session filenames (Issue #62)
- Add getSessionIdShort() helper for unique per-session tracking
- Add async hooks documentation with example
- Create iterative-retrieval skill for progressive context refinement
- Add continuous-learning-v2 skill with instinct-based learning
- Add ecc.tools ecosystem section to README
- Update skills list in README

All 67 tests passing.

scripts/lib/utils.js

@@ -79,6 +79,19 @@ function getTimeString() {
   return `${hours}:${minutes}`;
 }
 
+/**
+ * Get short session ID from CLAUDE_SESSION_ID environment variable
+ * Returns the last 8 characters for uniqueness with brevity
+ * @param {string} fallback - Fallback value if no session ID (default: 'default')
+ */
+function getSessionIdShort(fallback = 'default') {
+  const sessionId = process.env.CLAUDE_SESSION_ID;
+  if (!sessionId || sessionId.length === 0) {
+    return fallback;
+  }
+  return sessionId.slice(-8);
+}
+
 /**
  * Get current datetime in YYYY-MM-DD HH:MM:SS format
  */
@@ -360,6 +373,7 @@ module.exports = {
   getDateString,
   getTimeString,
   getDateTimeString,
+  getSessionIdShort,
 
   // File operations
   findFiles,