feat: v0.3.0 — State, Memory, message_status, MCP instructions

Phase B + C + message delivery status.

State: shared key-value store per mesh. set_state pushes changes
to all peers. get_state/list_state for reads. Peers coordinate
through shared facts instead of messages.

Memory: persistent knowledge with full-text search (tsvector).
remember/recall/forget. New peers recall context from past sessions.

message_status: check delivery status with per-recipient detail
(delivered/held/disconnected).

Multicast fix: broadcast and @group messages now push directly to
all connected peers instead of racing through queue drain.

MCP instructions: dynamic identity injection (name, groups, role),
comprehensive tool reference, group coordination guide.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

apps/cli/src/mcp/tools.ts

@@ -44,6 +44,21 @@ export const TOOLS: Tool[] = [
       },
     },
   },
+  {
+    name: "message_status",
+    description:
+      "Check the delivery status of a sent message. Shows whether each recipient received it.",
+    inputSchema: {
+      type: "object",
+      properties: {
+        id: {
+          type: "string",
+          description: "Message ID (returned by send_message)",
+        },
+      },
+      required: ["id"],
+    },
+  },
   {
     name: "check_messages",
     description:
@@ -105,4 +120,79 @@ export const TOOLS: Tool[] = [
       required: ["name"],
     },
   },
+
+  // --- State tools ---
+  {
+    name: "set_state",
+    description:
+      "Set a shared state value visible to all peers in the mesh. Pushes a change notification.",
+    inputSchema: {
+      type: "object",
+      properties: {
+        key: { type: "string" },
+        value: { description: "Any JSON value" },
+      },
+      required: ["key", "value"],
+    },
+  },
+  {
+    name: "get_state",
+    description: "Read a shared state value.",
+    inputSchema: {
+      type: "object",
+      properties: {
+        key: { type: "string" },
+      },
+      required: ["key"],
+    },
+  },
+  {
+    name: "list_state",
+    description: "List all shared state keys and values in the mesh.",
+    inputSchema: { type: "object", properties: {} },
+  },
+
+  // --- Memory tools ---
+  {
+    name: "remember",
+    description:
+      "Store persistent knowledge in the mesh's shared memory. Survives across sessions.",
+    inputSchema: {
+      type: "object",
+      properties: {
+        content: {
+          type: "string",
+          description: "The knowledge to remember",
+        },
+        tags: {
+          type: "array",
+          items: { type: "string" },
+          description: "Optional categorization tags",
+        },
+      },
+      required: ["content"],
+    },
+  },
+  {
+    name: "recall",
+    description: "Search the mesh's shared memory by relevance.",
+    inputSchema: {
+      type: "object",
+      properties: {
+        query: { type: "string", description: "Search query" },
+      },
+      required: ["query"],
+    },
+  },
+  {
+    name: "forget",
+    description: "Remove a memory from the mesh's shared knowledge.",
+    inputSchema: {
+      type: "object",
+      properties: {
+        id: { type: "string", description: "Memory ID to forget" },
+      },
+      required: ["id"],
+    },
+  },
 ];