Add skill definitions (SKILL.md + run.py) for all agent tools

skills/save_memory/SKILL.md

@@ -0,0 +1,13 @@
+---
+name: save_memory
+description: Save something important to your persistent memory. Use this to remember facts about users, lessons learned, project context, or anything you want to recall in future conversations. Memories survive restarts.
+parameters:
+  topic:
+    type: string
+    description: "Short topic name for the memory file (e.g. 'user_prefs', 'project_x', 'lessons')"
+    required: true
+  content:
+    type: string
+    description: The memory content to save
+    required: true
+---

skills/save_memory/run.py

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+#!/usr/bin/env python3
+import sys
+import json
+import os
+
+args = json.loads(sys.stdin.read())
+topic = args.get("topic", "note")
+content = args.get("content", "")
+workspace = os.environ.get("WORKSPACE", "/workspace")
+
+mem_dir = f"{workspace}/memory"
+os.makedirs(mem_dir, exist_ok=True)
+
+# Write the memory file
+filepath = f"{mem_dir}/{topic}.md"
+with open(filepath, "w") as f:
+    f.write(content + "\n")
+
+# Update MEMORY.md index
+index_path = f"{workspace}/MEMORY.md"
+existing = ""
+try:
+    with open(index_path) as f:
+        existing = f.read()
+except FileNotFoundError:
+    existing = "# Agent Memory\n"
+
+entry = f"- [{topic}](memory/{topic}.md)"
+if topic not in existing:
+    with open(index_path, "a") as f:
+        f.write(f"\n{entry}")
+
+print(f"Memory saved to {filepath}")