replace === output parsing with MCP tools via rmcp

src/types.rs

@@ -89,24 +89,3 @@ pub struct DaemonState {
     pub max_history: usize,
 }
 
-pub enum ResponseTarget {
-    Room(OwnedRoomId),
-    Dm(OwnedUserId),
-}
-
-/// One document within Claude's multi-doc output. Each doc has its own
-/// frontmatter; the daemon routes based on which fields are present.
-pub enum ClaudeDoc {
-    /// A chat message to send.
-    Message {
-        target: ResponseTarget,
-        body: String,
-    },
-    /// A reaction to a message. `target_id_arg` is the event id (possibly
-    /// shortened) the agent saw in the prompt; daemon expands by prefix match.
-    Reaction { target_id_arg: String, key: String },
-    /// Agent's internal monologue. Not sent to chat. Logged to tracing.
-    Thought(String),
-    /// Explicit "do nothing for this slot". Useful as a placeholder.
-    Skip,
-}