[IMPORTANT] Use TaskCreate to break ALL work into small tasks BEFORE starting — including tasks for each file read. This prevents context loss from long files. For simple tasks, AI MUST ask user whether to skip.

Prerequisites: MUST READ before executing:

Scan & Update Reference Doc — Read existing doc first, scan codebase for current state, diff against doc content, update only changed sections, preserve manual annotations. MUST READ .claude/skills/shared/scan-and-update-reference-doc-protocol.md for full protocol and checklists.

Quick Summary

Goal: Scan project codebase and populate docs/project-reference/domain-entities-reference.md with domain entities, data models, DTOs, aggregate boundaries, cross-service entity sync maps, and Mermaid ER diagrams. (content auto-injected by hook — check for [Injected: ...] header before reading)

Workflow:

1. Read — Load current target doc, detect init vs sync mode
2. Scan — Discover entities, models, DTOs, relationships via parallel sub-agents
3. Report — Write findings to external report file
4. Generate — Build/update reference doc from report
5. Verify — Validate entity references point to real files

Key Rules:

• Generic — works with any framework (.NET, Node.js, Java, Python, game engines, etc.)
• Detect framework first, then scan for framework-specific entity patterns
• For microservices: unify cross-service entities (identify owner vs consumer services)
• Every entity reference must come from actual project files with file:line references
• Detail level: summary + key properties (IDs, FKs, status fields, relationships) — NOT full property listing

Be skeptical. Apply critical thinking, sequential thinking. Every claim needs traced proof, confidence percentages (Idea should be more than 80%).

Scan Domain Entities

Phase 0: Read & Assess

1. Read docs/project-reference/domain-entities-reference.md
2. Detect mode: init (placeholder) or sync (populated)
3. If sync: extract existing sections and note what's already documented

Phase 1: Plan Scan Strategy

Detect Project Type & Framework

Scan for project type indicators in this priority order:

1. Check docs/project-config.json — Use modules[] for service paths, project.languages for tech stack
2. Filesystem detection fallback:

3. Generic fallback (any project): scan for class.*Entity, class.*Model, class.*Dto, interface.*Repository, schema, @table, collection

Detect Architecture Type

• Microservices: Multiple service directories with separate domain layers → enable cross-service entity sync analysis
• Monolith: Single domain layer → skip cross-service analysis
• Modular monolith: Single deployment but bounded contexts → analyze module boundaries

Use docs/project-config.json modules[] to identify service boundaries. If unavailable, detect from directory structure.

Phase 2: Execute Scan (Parallel Sub-Agents)

Launch 3-4 Explore agents in parallel:

Agent 1: Domain Entities & Aggregates

• Grep for entity base class inheritance (framework-specific patterns from Phase 1)
• Find aggregate root classes
• Find value objects
• Find enum types used as entity properties
• For each entity: note key properties (ID, foreign keys, status/state fields, timestamps)
• Note file paths with line numbers

Agent 2: DTOs, ViewModels & Application Layer Models

• Grep for DTO classes (*Dto, *DTO, *ViewModel, *Response, *Request)
• Find command/query objects that carry entity data
• Identify DTO-to-Entity mapping patterns (who owns mapping, method names)
• Note which DTOs map to which entities

Agent 3: Database Schemas & Persistence

• Find database collection/table definitions
• Find migration files that create/alter entity tables
• Find index definitions on entities
• Find seed data files
• Identify database technology per service (MongoDB, SQL Server, PostgreSQL, etc.)

Agent 4: Cross-Service Entity Sync (microservices only)

• Grep for integration event classes (*IntegrationEvent, *Event, *Message)
• Find message bus consumers that sync entity data across services
• Identify shared contracts/DTOs between services
• Map: which entity originates in which service, which services consume it
• Find event handler classes that create/update projected entities

Write all findings to: plans/reports/scan-domain-entities-{YYMMDD}-{HHMM}-report.md

Phase 3: Analyze & Generate

Read the report. Build these sections:

Target Sections

Entity Catalog Format

For each service/module, produce a table:

### {ServiceName} Entities

| Entity   | Key Properties                | Base Class | Relationships          | File                   |
| -------- | ----------------------------- | ---------- | ---------------------- | ---------------------- |
| Employee | Id, CompanyId, UserId, Status | EntityBase | 1:N Goals, 1:N Reviews | `path/Employee.cs:L15` |

Detail level: Summary + key properties only. Include: IDs, foreign keys, status/state fields, important business fields. Do NOT list every property.

Cross-Service Entity Map Format (microservices)

When the same entity concept appears in multiple services:

| Unified Entity | Owner Service | Consumer Services  | Sync Event           | Direction         |
| -------------- | ------------- | ------------------ | -------------------- | ----------------- |
| Employee       | ServiceA      | ServiceB, Accounts | EmployeeCreatedEvent | Owner → Consumers |

Mermaid ER Diagram Guidelines

• One diagram per service/bounded context (keep diagrams readable)
• One cross-service diagram showing entity sync flows
• Use Mermaid erDiagram syntax
• Show only key relationships, not every FK

erDiagram
    Employee ||--o{ Goal : "has"
    Employee ||--o{ Review : "receives"
    Goal ||--o{ CheckIn : "tracks"

Content Rules

• Show actual entity class declarations (3-5 lines) with file:line references
• Include count of entities per service
• Group by service/module, not by entity type
• For microservices: highlight cross-service boundaries clearly

Phase 4: Write & Verify

1. Write updated doc with <!-- Last scanned: YYYY-MM-DD --> at top
2. Verify: 5+ entity file paths exist (Glob check)
3. Verify: class names in catalog match actual class definitions (Grep check)
4. Report: sections updated, entities discovered, coverage gaps

Closing Reminders

• MUST break work into small todo tasks using TaskCreate BEFORE starting
• MUST search codebase for 3+ similar patterns before creating new code
• MUST cite file:line evidence for every claim (confidence >80% to act)
• MUST add a final review todo task to verify work quality MANDATORY IMPORTANT MUST READ the following files before starting:
• MUST READ .claude/skills/shared/scan-and-update-reference-doc-protocol.md before starting