feat: complete Dirigent rename + all TASKLIST items

- Task 1: Identity prompt now includes Discord userId
- Task 2: Added configurable schedulingIdentifier (default: ➡️)
- Task 3: Moderator handoff uses <@userId>+identifier instead of semantic messages
- Task 4: All prompts/comments/help text converted to English
- Task 5: Full project rename WhisperGate → Dirigent across all files

Breaking: config key changed from plugins.entries.whispergate to plugins.entries.dirigent
Breaking: channel policies file renamed to dirigent-channel-policies.json
Breaking: tool name changed from whispergate_tools to dirigent_tools

docs/RUN_MODES.md

@@ -1,6 +1,6 @@
 # Run Modes
 
-WhisperGate has two runtime components:
+Dirigent has two runtime components:
 
 1. `plugin/` (OpenClaw plugin)
 2. `no-reply-api/` (deterministic NO_REPLY service)
@@ -20,7 +20,7 @@ Then configure OpenClaw provider `baseURL` to `http://127.0.0.1:8787/v1`.
 
 ```bash
 ./scripts/dev-up.sh
-# or: docker compose up -d --build whispergate-no-reply-api
+# or: docker compose up -d --build dirigent-no-reply-api
 ```
 
 Stop: