416 Skill Lifecycle Audit A555057e

Skill Lifecycle Audit — Research Document

Deep semantic validation of how skills interconnect, what they load, what they produce, and whether the resulting call graph forms a coherent, non-contradictory workflow.

This document describes audit dimensions and detection strategies for future implementation. It is not an executable skill.

What This Audit Does

Given a plugin (or a single skill within a plugin), trace every outbound reference — skills loaded, agents delegated to, commands invoked, data consumed, data produced — and evaluate whether the resulting graph is coherent, complete, and non-redundant.

This is NOT structural validation (that's what NamespaceReferenceValidator and /plugin-creator:assessor do). This is semantic validation — does the wiring make sense given what each component claims to do?

Audit Dimensions

1. Call Chain Completeness

For each skill, answer:

• What does this skill claim to do? (from its description and body)
• What other skills/agents/commands does it invoke to accomplish that?
• For each invoked component: does that component's description and capability actually support what the caller needs from it?
• Are there steps in the skill's workflow that require capabilities not provided by any loaded component?

Output: A call graph per skill with annotations: SUPPORTED (target provides what caller needs), PARTIAL (target provides some but not all), UNSUPPORTED (target doesn't do what caller expects), MISSING (no target loaded for this step).

2. Bidirectional Lifecycle Coherence

For each skill that participates in a domain (e.g., "Python code quality"):

• Which other skills in the same domain reference it?
• Which other skills SHOULD reference it but don't?
• Is there a skill that produces output that this skill consumes, but the producer doesn't know about this consumer?

Example: stinkysnake identifies code smells and delegates remediation. Does the remediation agent (python-code-reviewer) know to invoke stinkysnake or snakepolish when doing code quality review? If not, the lifecycle has a gap — the reviewer can't trigger the smell detection workflow.

Output: Bidirectional reference matrix per domain. Flag one-directional references where bidirectional is expected.

3. Circular Loading Detection

Trace all Skill(command:) and Skill(skill=) references to build a directed graph. Identify:

• Direct cycles: A loads B, B loads A
• Indirect cycles: A loads B, B loads C, C loads A
• Self-references that could cause infinite recursion during skill activation

Output: List of cycles found, with the full chain.

4. Duplicated Datasets

Scan all skill bodies and reference files for:

• Identical or near-identical content blocks appearing in multiple skills (e.g., the same configuration template, the same list of rules, the same decision tree)
• Content that could be extracted into a shared reference file loaded by multiple skills
• Copy-paste indicators: identical code fences, identical tables, identical instruction blocks

Threshold: Content blocks >10 lines that appear in 2+ skills with >80% similarity.

Output: List of duplicated blocks with source locations and a recommendation for extraction into a shared reference.

5. Instruction Contradictions

Compare instructions across skills that operate in the same domain:

• Identify pairs of instructions that give opposing guidance
• Check whether contradictions are guarded by conditions (e.g., "for Python 3.9" vs "for Python 3.11+")
• Flag unguarded contradictions as errors

Examples of guarded contradictions (acceptable):

• Skill A: "Use List[str] type hints" (within a Python 3.9 compatibility section)
• Skill B: "Use list[str] type hints" (within a Python 3.11+ section)

Examples of unguarded contradictions (errors):

• Skill A: "Always use Dict[str, Any] for type hints"
• Skill B: "Use dict[str, Any] for type hints"
• Neither skill specifies a Python version condition

Output: List of contradiction pairs with file:line references and whether they are guarded or unguarded.

6. Scriptable Command Sequences

Identify patterns where a skill instructs the AI to:

1. Run a shell command
2. Parse the output
3. Make a decision based on the output
4. Run another command with arguments derived from step 3

These multi-step command sequences are candidates for wrapping in a Python script that:

• Handles argument validation
• Performs environment checks (tool availability, correct versions)
• Chains the steps with proper error handling
• Produces structured output the AI can consume directly

Output: List of scriptable sequences with the steps involved, the skill file:line where they appear, and the estimated complexity reduction from scripting.

7. Self-Referential Pattern Learning

As the audit discovers issues:

1. Classify each issue by the detection pattern that found it (e.g., "one-directional domain reference", "unguarded Python version contradiction", "duplicated pyproject.toml template")
2. Record the pattern with a description and example
3. Re-scan all already-audited skills using the newly discovered pattern
4. Repeat until no new patterns emerge

Output: A patterns.md file listing all discovered patterns, each with: pattern name, description, detection heuristic, and all instances found.

Recursive Depth Strategy

Not all issues require the same depth of analysis. The audit uses a tiered approach:

Tier 1: Structural Scan (fast, automated)

• Build call graph from regex extraction of Skill/Task/@ references
• Detect cycles, missing targets, one-directional references
• Identify duplicated content blocks via text similarity

Tier 2: Semantic Analysis (AI reasoning required)

• Read skill descriptions and bodies to understand intent
• Evaluate whether invoked components actually provide needed capabilities
• Detect instruction contradictions with context awareness

Tier 3: Specialist Delegation (for specific issue types)

When Tier 2 identifies a potential problem that requires domain expertise:

• Contradictions in Python typing advice → delegate to an agent that reads the relevant PEPs and Python version docs
• Circular dependency that might be intentional → delegate to an agent that evaluates whether the cycle serves a valid recursive workflow pattern
• Duplicated content that might be intentionally different → delegate to an agent that does fine-grained diff analysis

Each specialist delegation returns a verdict: CONFIRMED_ISSUE, FALSE_POSITIVE, or NEEDS_HUMAN_REVIEW.

Output Artifacts

The audit produces:

1. audit-report-{plugin-slug}.md — Full findings organized by dimension
2. call-graph-{plugin-slug}.md — Visual call graph (mermaid or ASCII)
3. patterns.md — Self-referential pattern catalog with detection heuristics
4. recommendations.md — Prioritized list of actionable fixes

Each finding includes:

• File path and line number
• The specific text that triggered the finding
• The audit dimension that detected it
• Severity: error (broken workflow), warning (incomplete workflow), info (optimization opportunity)
• Whether the finding was confirmed by a specialist delegation

What This Audit Does NOT Do

• Does NOT fix issues (that's a separate workflow)
• Does NOT validate namespace references resolve to files (that's NamespaceReferenceValidator in the pre-commit hook)
• Does NOT validate frontmatter schema (that's plugin_validator.py)
• Does NOT replace /plugin-creator:assessor (which does structural assessment for refactoring planning)

This audit answers: "Given that all the files exist and all the references resolve, does the resulting system actually work as a coherent whole?"