Paths: File paths (

shared/

,

references/

,

../ln-*

) are relative to skills repo root. If not found at CWD, locate this SKILL.md directory and go up one level for repo root. If

shared/

is missing, fetch files via WebFetch from

https://raw.githubusercontent.com/levnikolaevich/claude-code-skills/master/skills/{path}

.

Project Core Documentation Creator

Type: L3 Worker

L3 Worker that creates 4 core project documentation files. These are ALWAYS created regardless of project type.

Purpose & Scope

• Creates 4 core project documentation files (required for all projects)
• Receives Context Store from ln-110-project-docs-coordinator
• Heavy use of auto-discovery (architecture needs full project scan)
• Replaces placeholders with project-specific data
• Self-validates structure and content (16+ questions)
• Never gathers context itself; uses coordinator input

Invocation (who/when)

• ln-110-project-docs-coordinator: ALWAYS invoked as second worker (after ln-111)
• Never called directly by users

Inputs

From coordinator:

• contextStore

  : Full Context Store with all discovered data
  • PROJECT_NAME, PROJECT_DESCRIPTION
  • TECH_STACK (full object: frontend, backend, database, etc.)
  • DEPENDENCIES (from package.json)
  • SRC_STRUCTURE (folder analysis)
  • EXTERNAL_SYSTEMS (from .env.example)
  • CODE_CONVENTIONS (from eslint, prettier)
  • ADR_LIST (from docs/reference/adrs/)

• targetDir

  : Project root directory

MANDATORY READ: Load

shared/references/docs_quality_contract.md

,

shared/references/docs_quality_rules.json

, and

shared/references/markdown_read_protocol.md

.

Documents Created (4)

File	Target Sections	Questions	Auto-Discovery
docs/project/requirements.md	Functional Requirements (FR-XXX-NNN format)	Q23	Low
docs/project/architecture.md	11 arc42 sections with C4 diagrams	Q24-Q34	High
docs/project/tech_stack.md	Frontend, Backend, Database, Additional	Q35-Q38	High
docs/architecture/patterns_catalog.md	Pattern summary, 4-score model, trend tracking	—	High

Workflow

Phase 1: Receive Context

1. Parse full Context Store from coordinator
2. Validate required keys (PROJECT_NAME, TECH_STACK)
3. Extract architecture-specific data (SRC_STRUCTURE, DEPENDENCIES)

Phase 2: Create Documents

For each document (

docs/project/requirements.md

,

docs/project/architecture.md

,

docs/project/tech_stack.md

,

docs/architecture/patterns_catalog.md

):

1. Check if file exists (idempotent)
2. If exists: skip with log
3. If not exists:
   • Copy template from

     references/templates/

   • docs/project/requirements.md

     : derive requirements from current product/project sources and normalize to FR-XXX structure

   • docs/project/architecture.md

     : derive structure from current source tree, ADRs, and runtime boundaries; generate diagrams from live code facts

   • docs/project/tech_stack.md

     : derive versions and rationale from current dependencies and config files

   • docs/architecture/patterns_catalog.md

     :
     • Copy template from

       shared/templates/patterns_template.md

     • Auto-detect patterns in the current codebase:
       • Grep("Queue|Worker|Job|Bull") → Job Processing
       • Grep("EventEmitter|publish|subscribe") → Event-Driven
       • Grep("Cache|Redis|Memcached") → Caching
       • Grep("CircuitBreaker|Retry") → Resilience
     • Add detected patterns as "Status: Detected" (not yet audited)
     • Link to existing ADRs if pattern names match
     • Mark:

       <!-- Auto-detected by ln-112, audit with ln-640 -->

   • Replace

     {{PLACEHOLDER}}

     with Context Store values
   • Preserve the shared opening contract:

     SCOPE

     ,

     DOC_KIND

     ,

     DOC_ROLE

     ,

     READ_WHEN

     ,

     SKIP_WHEN

     ,

     PRIMARY_SOURCES

   • Preserve the standard top sections:

     Quick Navigation

     ,

     Agent Entry

     ,

     Maintenance

   • Generate C4 diagrams from SRC_STRUCTURE (for architecture.md, if no legacy diagrams)
   • Insert ADR links (for architecture.md Section 8)
   • Never leave template markers in published project docs
   • If data is missing: omit the claim or use a concise neutral fallback, but do NOT emit

     [TBD: ...]

Phase 3: Self-Validate

For each created document:

1. Check SCOPE tag and metadata markers in the opening block
2. Check required top sections (

   Quick Navigation

   ,

   Agent Entry

   ,

   Maintenance

   )
3. Check required sections (from questions_core.md)
4. Validate specific format requirements:
   • requirements.md: FR-XXX identifiers, MoSCoW labels
   • architecture.md: 11 sections, C4 diagrams, ADR references
   • tech_stack.md: versions, rationale for each technology
5. Check docs-quality contract compliance (no forbidden placeholders, no leaked template metadata, valid doc kind/role)
6. Auto-fix issues where possible

Phase 4: Return Status

Return to coordinator:

{
  "created_files": ["docs/project/requirements.md", "docs/project/architecture.md", "docs/project/tech_stack.md", "docs/architecture/patterns_catalog.md"],
  "skipped_files": [],
  "quality_inputs": {
    "doc_paths": ["docs/project/requirements.md", "docs/project/architecture.md", "docs/project/tech_stack.md", "docs/architecture/patterns_catalog.md"],
    "owners": {
      "docs/project/requirements.md": "ln-112-project-core-creator",
      "docs/project/architecture.md": "ln-112-project-core-creator",
      "docs/project/tech_stack.md": "ln-112-project-core-creator",
      "docs/architecture/patterns_catalog.md": "ln-112-project-core-creator"
    }
  },
  "validation_status": "passed",
  "diagrams_generated": 3
}

Critical Notes

• Idempotent: Never overwrite existing files
• Heavy auto-discovery: architecture.md requires deep project analysis
• C4 diagrams: Generated from SRC_STRUCTURE in Mermaid format
• ADR integration: Section 8 links to docs/reference/adrs/
• arc42 compliance: ISO/IEC/IEEE 42010:2022 structure
• Publishable output: Core project docs must not contain

  [TBD: ...]

  ,

  TODO

  , or leaked template metadata

NO_CODE_EXAMPLES Rule (MANDATORY)

Documents describe contracts and decisions, NOT implementations:

• FORBIDDEN: Code blocks > 5 lines, function implementations, imports, DI configuration
• ALLOWED: Mermaid diagrams, component tables, method signatures (1 line), ADR links
• INSTEAD OF CODE: Reference source: "See src/Services/UserService.cs:45"
• TEMPLATE RULE: All templates include

  <!-- NO_CODE_EXAMPLES: ... -->

  tag - FOLLOW IT

Stack Adaptation Rule (MANDATORY)

• Links must reference stack-appropriate docs (Microsoft for .NET, MDN for JS)
• Never mix stack references (no Python examples in .NET project)

Format Priority (MANDATORY)

Tables > Mermaid/ASCII diagrams > Lists > Text

Runtime Summary Artifact

MANDATORY READ: Load

shared/references/docs_generation_summary_contract.md

Accept optional

summaryArtifactPath

.

Summary kind:

• docs-generation

Required payload semantics:

• worker = "ln-112"

• status

• created_files

• skipped_files

• quality_inputs

• validation_status

• warnings

Write the summary to the provided artifact path or return the same envelope in structured output.

Definition of Done

• Context Store received and validated
• 4 core documents created (or skipped if exist)
• C4 diagrams generated (Context, Container, Component)
• ADR links populated
• Patterns auto-detected and added to catalog
• Self-validation passed (metadata markers, top sections, format)
• Actuality verified: all document facts match current code (paths, functions, APIs, configs exist and are accurate)
• Status returned

Reference Files

• Templates:

  references/templates/requirements_template.md

  ,

  references/templates/architecture_template.md

  ,

  references/templates/tech_stack_template.md

• Patterns template:

  shared/templates/patterns_template.md

• Questions:

  references/questions_core.md

  (Q23-Q38)

---

Version: 2.2.0 Last Updated: 2025-01-12