feat: Add Agent Evaluation System and Refactor AI Modules (#16111)

## Summary

This PR introduces a comprehensive agent evaluation system and refactors
the AI module structure for better organization.

## Key Changes

### 🎯 Agent Evaluation System
- Added **Agent Turn Evaluation** entities, DTOs, and database schema
- New GraphQL mutations: `evaluateAgentTurn` and `runEvaluationInput`
- Added `evaluationInputs` field to Agent entity for storing test inputs
- New `AgentTurnGraderService` for automatic turn evaluation
- Added evaluation UI with new **Evals** and **Logs** tabs in agent
detail pages

### 🏗️ Entity & Module Refactoring
- Renamed `AgentChatMessage` → `AgentMessage` for clarity
- Consolidated chat entities: `AgentMessage`, `AgentTurn`, and
`AgentChatThread`
- Reorganized AI modules under `ai/` subdirectory structure
- Updated imports across codebase to reflect new module paths

### 🤖 New Agents & Roles
- Added **Dashboard Builder Agent** for dashboard creation and
management
- Added **Dashboard Manager Role** with appropriate permissions
- Updated role permissions to be more granular (users vs agents vs API
keys)

### 🔐 Permission System Updates
- Added `HTTP_REQUEST_TOOL` permission flag
- Updated Workflow Manager role permissions (restricted tool access)
- Enhanced permission flag types to differentiate between user/agent/API
key contexts
- Added `isRelevantForAgents`, `isRelevantForApiKeys`,
`isRelevantForUsers` to permission flags

### 📨 Message Role Enhancement
- Added `system` role to `AgentMessageRole` enum (alongside
user/assistant)
- Updated message handling to support system prompts

### 🎨 UI/UX Improvements
- New tabs in agent detail: **Evals** and **Logs**
- Added turn detail page: `/ai/agents/:agentId/turns/:turnId`
- Fixed text overflow in `SettingsListItemCardContent`
- Updated role applicability labels ("Assignable to Workspace Members")

### 🛠️ Technical Improvements
- Fixed Zod schema validation for UUID and Date fields (use string
validators)
- Updated `ToolRegistryService` to properly register HTTP tool with
permission flag
- Enhanced error handling in agent execution services
- Updated database migrations for new entity schema

## Database Migrations
- `1764210000000-add-system-role-to-agent-message.ts`
- `1764220000000-add-evaluation-inputs-to-agent.ts`
- `1764200000000-add-agent-turn-evaluation.ts`
- `1764100000000-refactor-agent-chat-entities.ts`

## Testing
- [ ] Agent evaluation flow tested
- [ ] Dashboard Builder agent tested
- [ ] Permission system validated
- [ ] UI tabs and navigation tested
- [ ] Database migrations run successfully

## Breaking Changes
⚠️ **Entity Rename**: `AgentChatMessage` renamed to `AgentMessage` -
GraphQL queries need updating

## Related Issues
<!-- Link any related issues here -->

## Screenshots
<!-- Add screenshots if applicable -->

packages/twenty-server/src/engine/metadata-modules/metadata-engine.module.ts

@@ -1,7 +1,8 @@
 import { Module } from '@nestjs/common';
 
-import { AiAgentModule } from 'src/engine/metadata-modules/ai-agent/ai-agent.module';
-import { AiChatModule } from 'src/engine/metadata-modules/ai-chat/ai-chat.module';
+import { AiAgentMonitorModule } from 'src/engine/metadata-modules/ai/ai-agent-monitor/ai-agent-monitor.module';
+import { AiAgentModule } from 'src/engine/metadata-modules/ai/ai-agent/ai-agent.module';
+import { AiChatModule } from 'src/engine/metadata-modules/ai/ai-chat/ai-chat.module';
 import { CronTriggerModule } from 'src/engine/metadata-modules/cron-trigger/cron-trigger.module';
 import { DataSourceModule } from 'src/engine/metadata-modules/data-source/data-source.module';
 import { DatabaseEventTriggerModule } from 'src/engine/metadata-modules/database-event-trigger/database-event-trigger.module';
@@ -27,6 +28,7 @@ import { WorkspaceMigrationModule } from 'src/engine/metadata-modules/workspace-
     ServerlessFunctionModule,
     ServerlessFunctionLayerModule,
     AiAgentModule,
+    AiAgentMonitorModule,
     AiChatModule,
     ViewModule,
     WorkspaceMetadataVersionModule,