Validate Context Rules

Check .claude/rules/subsystem-*.md files match current codebase.

Workflow

For each subsystem-*.md rule file:

1. Read the rule — Extract type names, module paths, function names, error variants
2. Grep the codebase — Verify each reference exists
3. Check for new additions — Find new public types/modules not in rule
4. Report — List stale references + missing additions

Subsystem Rules to Check

Subsystem rules are provisional placeholders while the implementation is scaffolded — verify against current src/ as code lands.

Verification Commands

# Check if a type still exists
grep -r "pub struct TypeName" src/
grep -r "pub enum TypeName" src/

# Check if a module still exists
ls src/module_name/

# Check for new public types not in the rule
grep -rn "^pub struct\|^pub enum\|^pub trait" src/ | grep -v test

Output Format

## Context Validation Report

### subsystem-cli.md
- OK: [type] still present
- STALE: [type] — renamed to [new_name] or removed
- MISSING: [new_type] — not documented in rule

### subsystem-file-structure.md
...

When to Run

• After big refactors
• Before major feature branches
• Part of /code-check audits
• Monthly