refactor: move AGENT.md and AGENT.ko.md to .agents/ directory

README.md

@@ -138,6 +138,8 @@ To ensure communication integrity across public MQTT brokers, the backplane inte
 ```text
 .
 ├── .agents/
+│   ├── AGENT.md                 # Agent roles, snapshottings, and execution charter
+│   ├── AGENT.ko.md              # Agent roles, snapshottings, and execution charter (Korean)
 │   └── skills/                  # Core orchestration shell wrappers & libraries
 │       ├── lib.sh               # Shared orchestration library
 │       ├── multi-agent-mux-create/
@@ -154,7 +156,6 @@ To ensure communication integrity across public MQTT brokers, the backplane inte
 │   └── jobs/                    # Asynchronous job metadata files
 ├── scripts/
 │   └── generate-env.sh          # Environment bootstrap helper
-├── AGENT.md                     # Agent roles, snapshottings, and execution charter
 ├── BOOTSTRAP.md                 # Detailed installation and verification guide
 ├── MESSAGING.md                 # MQTT wire protocol specification
 └── README.md                    # Project introduction and overview (this file)
@@ -186,6 +187,6 @@ For detailed setup instructions, please consult the **[BOOTSTRAP.md](./BOOTSTRAP
 ## 📝 Guidelines for Collaborating Agents
 
 If you are an AI agent newly onboarded to this project:
-1.  Read **[AGENT.md](./AGENT.md)** to align on development constraints and roles (PM, Worker, Reviewer).
+1.  Read **[AGENT.md](.agents/AGENT.md)** to align on development constraints and roles (PM, Worker, Reviewer).
 2.  Adhere to the **Pane Snapshotting Rules** in `AGENT.md` (Section 4) to prevent scrollback data loss during long execution steps.
 3.  Never modify core logic without submitting a diff to the reviewer sessions for evaluation.