MAESTRO: Merge PR #662 - Add save_memory MCP tool for manual memory storage

Adds save_memory MCP tool allowing users to manually save observations
for semantic search. Source changes cherry-picked from PR #662 by
@darconada (build artifact conflicts resolved by direct application).

Closes #645.

Co-Authored-By: darconadalabarga <darconada@arsys.es>
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/servers/mcp-server.ts

@@ -233,6 +233,31 @@ NEVER fetch full details without filtering first. 10x token savings.`,
     handler: async (args: any) => {
       return await callWorkerAPIPost('/api/observations/batch', args);
     }
+  },
+  {
+    name: 'save_memory',
+    description: 'Save a manual memory/observation for semantic search. Use this to remember important information.',
+    inputSchema: {
+      type: 'object',
+      properties: {
+        text: {
+          type: 'string',
+          description: 'Content to remember (required)'
+        },
+        title: {
+          type: 'string',
+          description: 'Short title (auto-generated from text if omitted)'
+        },
+        project: {
+          type: 'string',
+          description: 'Project name (uses "claude-mem" if omitted)'
+        }
+      },
+      required: ['text']
+    },
+    handler: async (args: any) => {
+      return await callWorkerAPIPost('/api/memory/save', args);
+    }
   }
 ];