debt-architecture

name	debt-architecture
description	Detect architecture-level technical debt: coupling, cycles, boundary violations, layer leaks. Outputs findings conforming to the debt-finding schema.

Skill: debt-architecture

When to use me

• Audit of a repo's architecture (coupling, dependencies between modules)
• After a major refactor (verify boundaries are still respected)
• When manual code review flagged "this is too coupled" without a tool to validate
• Before merging a PR that adds new modules or imports

Method (MANDATORY)

Step 1: Detect language and project structure

Same as debt-scan — use LANG_MAP from tools/scan_code.py to identify primary language.

Step 2: Run architecture scanners

For each language, run the appropriate architecture scanner:

Language	Tool	Detects
Python	pydeps (or custom AST walker)	Circular imports, fan-out, fan-in
Rust	cargo geiger + custom cycle detector	Circular crate deps, unsafe FFI
TypeScript/JS	dependency-cruiser (already used)	Layer violations, circular imports, reach
Java	jdeps + maven-dependency-plugin	Cycle detection, layer violations
Go	go list -f '{{.ImportPath}}' + custom cycle detector	Circular package deps

If a tool is not available, fall back to the custom AST walker (see tools/scan_architecture.py).

Step 3: Classify findings

Architecture findings are typed differently from code findings:

• Circular dependency (category: architecture, subcategory: circular_dependency)
• High coupling (category: architecture, subcategory: high_coupling)
• Boundary violation (category: architecture, subcategory: boundary_violation)
• Layer leak (category: architecture, subcategory: layer_leak)
• God module (category: architecture, subcategory: god_module)

Step 4: Critic Engine (MANDATORY)

Same as debt-scan — invoke skills/critic/SKILL.md on the complete list.

Step 5: KG persistence (V2)

Each finding creates a Debt node in the KG with an affects edge to the affected Component nodes (per ADR-0023).

Step 6: Update the debt registry

New architecture findings are added to the registry with:

• Owner: who needs to fix
• Severity: based on number of modules affected
• Status: open (initial)

What I produce

• .debt-architecture.json : findings + critic report (V1 format)
• KG nodes (V2) : Debt + Component + Edge
• Updated debt-registry.json
• report-architecture.md : human-readable summary

Tools used

• tools/scan_architecture.py : orchestrates the scanners + custom AST walker
• kg_store.py (Layer 0) : persistence
• skills/critic/SKILL.md : mandatory critic

Non-NEGOTIABLE rules

1. Evidence required : every architecture finding MUST have a concrete cycle path or coupling metric
2. Confidence threshold : same as code findings (0.6 minimum)
3. Critic mandatory : no architecture finding without critic validation
4. KG persistence : all findings must be in the KG, not just in JSON
5. V1 compatibility : the .debt-architecture.json file is also written for V1 consumers