docs: clean up root markdown files and synchronize with v4.4.0 standards

- Relocate legacy implementation_plan.md to docs/contracts/nats-backplane/implementation_plan.md
- Synchronize root documentation (README, README.ko, BOOTSTRAP, BOOTSTRAP.ko, AGENTS, MESSAGING, IMPROVEMENTS) to latest v4.4.0 standards
- Consolidate IMPROVEMENTS.md to single source of truth (5 open / 31 completed tasks 1:1 matching section headers)
- Archive unanimous PASS review reports from Claude, Grok, Codex, and OpenCode along with Plan Rev.2

README.md

@@ -45,12 +45,12 @@ All orchestration functionalities are structured under the `.agents/skills/` dir
 *   **`multi-agent-mux-resume`**: Restores stopped sessions by resolving workspace UUIDs from disk or cache, and invokes the underlying agent using session-resume parameters (e.g., `claude -r <uuid>`, `agy --conversation <uuid>`, `hermes --resume <uuid>`, `grok --resume <uuid>`, `opencode --session <uuid>`, or `codex resume <uuid>`).
 *   **`multi-agent-mux-status`**: Queries the running states of all active sessions, detecting PID mismatches, command signatures, and drifts between actual herdr instances and the registry database.
 *   **`multi-agent-mux-monitor`**: A long-running reconcile worker that dynamically monitors herdr sessions and synchronizes states to `.mam/agent-sessions.yaml`.
-*   **`multi-agent-mux-delegate-job`**: The core asynchronous task distribution module containing:
+*   **`multi-agent-mux-delegate-job`**: The core asynchronous task distribution module (core implementation in `.agents/skills/lib_py/delegation/`; `scripts/*.py` serves as compatibility shims):
     *   `registry.py`: Atomically registers and claims jobs using file advisory locks (`fcntl`).
     *   `job_subscriber.py`: Connects to the MQTT backplane, captures live events, and appends them to audit trails.
     *   `publish_event.py`: Emits execution status transitions and error details from workspace scripts.
     *   `mqtt_common.py`: Manages connection policies, authentication, and HMAC signing.
-*   **`multi-agent-mux-loop`**: Autonomous planning-execution-review orchestration loop across Planner, Creator, and Reviewers until unanimous consensus.
+*   **`multi-agent-mux-loop`**: Autonomous planning-execution-review orchestration loop across Planner, Creator, and Reviewers until unanimous consensus (driven by Python loop runtime in `lib_py.loop`, eager-import immutable runtime, strict verdict parser).
 *   **`multi-agent-mux-orc-onboard`**: Helper to register and isolate orchestrator session UUIDs to prevent sub-agent discovery capture.
 
 ---
@@ -164,6 +164,10 @@ To ensure communication integrity across public MQTT brokers, the backplane inte
 │   ├── MULTI_AGENT_RULES.ko.md  # Agent roles, snapshottings, and execution charter (Korean)
 │   └── skills/                  # Core orchestration shell wrappers & libraries
 │       ├── lib.sh               # Shared orchestration library
+│       ├── lib_py/              # Python core orchestration engine
+│       │   ├── agents/          # Multi-agent CLI lifecycle adapters
+│       │   ├── delegation/      # Asynchronous delegation & CAS state engine
+│       │   └── loop/            # Autonomous planning-execution-review loop runtime
 │       ├── multi-agent-mux-create/
 │       ├── multi-agent-mux-stop/
 │       ├── multi-agent-mux-resume/
@@ -171,7 +175,7 @@ To ensure communication integrity across public MQTT brokers, the backplane inte
 │       ├── multi-agent-mux-monitor/
 │       ├── multi-agent-mux-delegate-job/
 │       │   ├── requirements.txt # Python dependency declaration
-│       │   └── scripts/         # Core backplane implementation (Python)
+│       │   └── scripts/         # Wire-compatibility shims (Python)
 │       ├── multi-agent-mux-loop/
 │       └── multi-agent-mux-orc-onboard/
 ├── .mam/                        # Multi-Agent Mux metadata (git-ignored)
@@ -185,9 +189,21 @@ To ensure communication integrity across public MQTT brokers, the backplane inte
 │   ├── install.sh               # Remote/Network installer script
 │   ├── update.sh                # Updater script
 │   └── remove.sh                # Uninstaller script
+├── docs/                        # Specifications, guides, and architectural contracts
+│   ├── contracts/               # Issue/backplane contracts and migration roadmaps
+│   ├── MAM_WEB_PTY_BRIDGE_PLAN.md # Web PTY terminal bridge design plan
+│   ├── NEW_AGENT_INTEGRATION_GUIDE.md # Guide for integrating new AI coding agents
+│   └── OPENCODE_OLLAMA_GUIDE.md # OpenCode interpreter + Ollama integration guide
+├── nats-docker/                 # Private NATS broker deployment submodule
+├── tests/                       # Comprehensive test suite (32 modules)
+├── AGENTS.md                    # Behavioral guidelines and orchestrator scope guards
+├── BOOTSTRAP.ko.md              # Installation and verification guide (Korean)
 ├── BOOTSTRAP.md                 # Detailed installation and verification guide
-├── MESSAGING.md                 # MQTT wire protocol specification
-└── README.md                    # Project introduction and overview (this file)
+├── IMPROVEMENTS.md              # Backlog tracking issues and completed architectural tasks
+├── MESSAGING.md                 # MQTT wire protocol specification and internals
+├── README.ko.md                 # Project introduction and overview (Korean)
+├── README.md                    # Project introduction and overview (this file)
+└── VERSIONS.md                  # Release notes and 4-way lockstep version ledger
 ```
 
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