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

plugin/README.md

@@ -1,4 +1,4 @@
-# WhisperGate Plugin
+# Dirigent Plugin
 
 ## Hook strategy
 
@@ -33,7 +33,7 @@ Optional:
 - `enableWhispergatePolicyTool` (default true)
 
 Unified optional tool:
-- `whispergateway_tools`
+- `dirigent_tools`
   - Discord actions: `channel-private-create`, `channel-private-update`, `member-list`
   - Policy actions: `policy-get`, `policy-set-channel`, `policy-delete-channel`
 - `bypassUserIds` (deprecated alias of `humanList`)
@@ -51,14 +51,14 @@ Policy file behavior:
 - loaded once on startup into memory
 - runtime decisions read memory state only
 - direct file edits do NOT affect memory state
-- `whispergateway_tools` policy actions update memory first, then persist to file (atomic write)
+- `dirigent_tools` policy actions update memory first, then persist to file (atomic write)
 
-## Optional tool: `whispergateway_tools`
+## Optional tool: `dirigent_tools`
 
-This plugin registers one unified optional tool: `whispergateway_tools`.
+This plugin registers one unified optional tool: `dirigent_tools`.
 To use it, add tool allowlist entry for either:
-- tool name: `whispergateway_tools`
-- plugin id: `whispergate`
+- tool name: `dirigent_tools`
+- plugin id: `dirigent`
 
 Supported actions:
 - Discord: `channel-private-create`, `channel-private-update`, `member-list`