feat(odoo): add activeblue_ai Odoo 18 module with OWL2 frontend

Models:
- ab.ai.bot: service URL, webhook secret, privacy mode, ping/dispatch
- ab.ai.directive: full directive lifecycle log with status tracking
- ab.ai.log: activity log with level/agent/record linkage
- ab.ai.agent.registry: agent list synced from agent service

Controllers:
- webhook.py: /ai/webhook/callback handles directive_completed, escalation, sweep_findings
- health_proxy.py: /ai/health proxies agent service detailed health
- approval.py: /ai/chat dispatch, /ai/approval/pending, /ai/approval/respond

Security:
- group_ai_user (chat) + group_ai_manager (configure, approve, logs)
- ir.model.access.csv for all 4 models

Views: list/form for bot, directives, logs, registry; main menu with AI brain icon

OWL2 frontend:
- systray_button.js: brain icon in top bar, status dot, pending approval badge
- ai_panel.js: slide-in chat panel, approval workflow, 30s poll for pending items
- CSS: slide-in animation, message bubbles, loading dots, approval section

Data: 4 cron jobs (ping, registry sync, directive/log cleanup)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

addons/activeblue_ai/views/menus.xml

@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<odoo>
+    <menuitem id="menu_activeblue_ai_root"
+              name="ActiveBlue AI"
+              sequence="99"
+              web_icon="activeblue_ai,static/src/img/icon.png"
+              groups="activeblue_ai.group_ai_user"/>
+
+    <menuitem id="menu_ai_directives"
+              name="Directives"
+              parent="menu_activeblue_ai_root"
+              action="action_ab_ai_directive"
+              sequence="10"
+              groups="activeblue_ai.group_ai_user"/>
+
+    <menuitem id="menu_ai_logs"
+              name="Activity Logs"
+              parent="menu_activeblue_ai_root"
+              action="action_ab_ai_log"
+              sequence="20"
+              groups="activeblue_ai.group_ai_manager"/>
+
+    <menuitem id="menu_ai_config"
+              name="Configuration"
+              parent="menu_activeblue_ai_root"
+              sequence="90"
+              groups="activeblue_ai.group_ai_manager"/>
+
+    <menuitem id="menu_ai_bot_config"
+              name="Bot Settings"
+              parent="menu_ai_config"
+              action="action_ab_ai_bot"
+              sequence="10"
+              groups="activeblue_ai.group_ai_manager"/>
+
+    <menuitem id="menu_ai_registry"
+              name="Agent Registry"
+              parent="menu_ai_config"
+              action="action_ab_ai_registry"
+              sequence="20"
+              groups="activeblue_ai.group_ai_manager"/>
+</odoo>