Review cleanup: fix stale tool references, update docs, add README

- Remove unused src/context/notify.ts (never wired up)
- Fix format.ts/search.ts: update memory_messages references to router pattern
- Update AGENTS.md: reflect current state, add recommended consumer additions
- Update docs/architecture.md: match router pattern, remove stale phases
- Add README.md: problem/solution, install, tools, agent guidance

src/context/notify.ts

@@ -1,26 +0,0 @@
-export const formatAnomalyNotification = (
-  sessionID: string,
-  _type: string,
-  percentage: number,
-  status: string,
-): string => {
-  const lines: string[] = [];
-
-  lines.push(`Context threshold reached [${status}]`);
-  lines.push("");
-  lines.push(`Session: ${sessionID}`);
-  lines.push(`Context: ${percentage}% used`);
-
-  if (status === "critical") {
-    lines.push("");
-    lines.push("Imminent automatic compaction. Consider triggering memory_compact now.");
-  } else if (status === "red") {
-    lines.push("");
-    lines.push("Context is running low. Use memory_compact at your next natural break point.");
-  } else if (status === "yellow") {
-    lines.push("");
-    lines.push("Context usage is getting high. Consider memory_compact when convenient.");
-  }
-
-  return lines.join("\n");
-};

src/history/format.ts

@@ -15,7 +15,9 @@ export const formatSessionList = (rows: Record<string, unknown>[]): string => {
   }
 
   lines.push("");
-  lines.push("Use memory_messages with a session ID to read the full conversation.");
+  lines.push(
+    'Use memory({tool: "messages", args: {sessionId: "..."}}) to read the full conversation.',
+  );
 
   return lines.join("\n");
 };

src/history/search.ts

@@ -51,7 +51,9 @@ export const searchConversations = (searchTerm: string, limit: number): string =
       lines.push("");
     }
 
-    lines.push("Use memory_messages with a session ID to read the full conversation.");
+    lines.push(
+      'Use memory({tool: "messages", args: {sessionId: "..."}}) to read the full conversation.',
+    );
     return lines.join("\n");
   } catch (err) {
     return `Search failed: ${err instanceof Error ? err.message : String(err)}`;