stage-10: memory search with Ollama embeddings + SQLite

Semantic search over memory/*.md files using all-minilm embeddings.
Adds /search Discord command and `echo memory search/reindex` CLI.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

cli.py

@@ -405,6 +405,52 @@ def _cron_disable(name: str):
         print(f"Job '{name}' not found.")
 
 
+def cmd_memory(args):
+    """Handle memory subcommand."""
+    if args.memory_action == "search":
+        _memory_search(args.query)
+    elif args.memory_action == "reindex":
+        _memory_reindex()
+
+
+def _memory_search(query: str):
+    """Search memory and print results."""
+    from src.memory_search import search
+
+    try:
+        results = search(query)
+    except ConnectionError as e:
+        print(f"Error: {e}")
+        sys.exit(1)
+
+    if not results:
+        print("No results found (index may be empty — run `echo memory reindex`).")
+        return
+
+    for i, r in enumerate(results, 1):
+        score = r["score"]
+        print(f"\n--- Result {i} (score: {score:.3f}) ---")
+        print(f"File: {r['file']}")
+        preview = r["chunk"][:200]
+        if len(r["chunk"]) > 200:
+            preview += "..."
+        print(preview)
+
+
+def _memory_reindex():
+    """Rebuild memory search index."""
+    from src.memory_search import reindex
+
+    print("Reindexing memory files...")
+    try:
+        stats = reindex()
+    except ConnectionError as e:
+        print(f"Error: {e}")
+        sys.exit(1)
+
+    print(f"Done. Indexed {stats['files']} files, {stats['chunks']} chunks.")
+
+
 def cmd_heartbeat(args):
     """Run heartbeat health checks."""
     from src.heartbeat import run_heartbeat
@@ -515,6 +561,15 @@ def main():
 
     secrets_sub.add_parser("test", help="Check required secrets")
 
+    # memory
+    memory_parser = sub.add_parser("memory", help="Memory search commands")
+    memory_sub = memory_parser.add_subparsers(dest="memory_action")
+
+    memory_search_p = memory_sub.add_parser("search", help="Search memory files")
+    memory_search_p.add_argument("query", help="Search query text")
+
+    memory_sub.add_parser("reindex", help="Rebuild memory search index")
+
     # heartbeat
     sub.add_parser("heartbeat", help="Run heartbeat health checks")
 
@@ -563,6 +618,9 @@ def main():
             cmd_channel(a) if a.channel_action else (channel_parser.print_help() or sys.exit(0))
         ),
         "send": cmd_send,
+        "memory": lambda a: (
+            cmd_memory(a) if a.memory_action else (memory_parser.print_help() or sys.exit(0))
+        ),
         "heartbeat": cmd_heartbeat,
         "cron": lambda a: (
             cmd_cron(a) if a.cron_action else (cron_parser.print_help() or sys.exit(0))