Checks bootstrap initialization, graceful shutdown, resource cleanup, signal handling, liveness/readiness probes. Use when auditing app lifecycle.
Paths: File paths (references/, ../ln-*) are relative to this skill directory.
Lifecycle Auditor (L3 Worker)
Type: L3 Worker
Specialized worker auditing application lifecycle and entry points.
Purpose & Scope
Audit lifecycle (Category 12: Medium Priority)
Check bootstrap, shutdown, signal handling, probes
Calculate compliance score (X/10)
Inputs
MANDATORY READ: Load references/audit_worker_core_contract.md.
Tool policy: follow host AGENTS.md MCP preferences; load references/mcp_tool_preferences.md and references/mcp_integration_patterns.md only when host policy is absent or MCP behavior is unclear.
Receives contextStore with tech stack, deployment type, codebase root, output_dir.
Use hex-graph first when lifecycle tracing materially improves confidence. Use hex-line first for local code reads when available. If MCP is unavailable, unsupported, or not indexed, continue with built-in Read/Grep/Glob/Bash and state the fallback in the report.
Workflow
Detection policy: use two-layer detection (candidate scan, then context verification); load references/two_layer_detection.md only when the verification method is ambiguous.
Parse context + output_dir
Check lifecycle patterns (Layer 1: grep for SIGTERM, shutdown handlers, probes)
Analyze context per candidate (Layer 2):
Bootstrap order: read main file -- trace actual init sequence, verify dependencies satisfied before use
Graceful shutdown: read signal handlers -- do they actually close all resources? Or just log and exit?
Resource cleanup: read shutdown handler -- are ALL opened resources (DB, Redis, queues) closed?
Probes: check deployment config (Dockerfile, k8s manifests) -- is this containerized?
Collect confirmed findings
Calculate score
Write Report: Build full markdown report in memory per references/templates/audit_worker_report_template.md, write to {output_dir}/ln-629--global.md in single Write call
Return Summary: Return minimal summary to coordinator
Audit Rules
1. Bootstrap Initialization Order
Detection:
Check main/index file for initialization sequence
Verify dependencies loaded before usage (DB before routes)
Severity:
HIGH: Incorrect order causes startup failures
Recommendation: Initialize in correct order: config -> DB -> routes -> server
Effort: M (refactor startup)
2. Graceful Shutdown
Detection:
Grep for SIGTERM, SIGINT handlers
Check process.on('SIGTERM') (Node.js)
Check signal.Notify (Go)
Severity:
HIGH: No shutdown handler (abrupt termination)
Recommendation: Add SIGTERM handler, close connections gracefully
Effort: M (add shutdown logic)
3. Resource Cleanup on Exit
Detection:
Check if DB connections closed on shutdown
Verify file handles released
Check worker threads stopped
Severity:
MEDIUM: Resource leaks on shutdown
Recommendation: Close all resources in shutdown handler
Effort: S-M (add cleanup calls)
4. Signal Handling
Detection:
Check handlers for SIGTERM, SIGINT, SIGHUP
Verify proper signal propagation to child processes
Severity:
MEDIUM: Missing signal handlers
Recommendation: Handle all standard signals
Effort: S (add signal handlers)
5. Liveness/Readiness Probes
Detection (for containerized apps):
Check for /live, /ready endpoints
Verify Kubernetes probe configuration
Severity:
MEDIUM: No probes (Kubernetes can't detect health)
Recommendation: Add /live (is running) and /ready (ready for traffic)
Effort: S (add endpoints)
Scoring Algorithm
MANDATORY READ: Load references/audit_scoring.md.
Output Format
MANDATORY READ: Load references/templates/audit_worker_report_template.md.
Write JSON summary per references/audit_summary_contract.md. In managed mode the caller passes both runId and summaryArtifactPath; in standalone mode the worker generates its own run-scoped artifact path per shared contract.
Write report to {output_dir}/ln-629--global.md with category: "Lifecycle" and checks: bootstrap_order, graceful_shutdown, resource_cleanup, signal_handling, probes.
Return summary per references/audit_summary_contract.md.
When summaryArtifactPath is absent, write the standalone runtime summary under .hex-skills/runtime-artifacts/runs/{run_id}/evaluation-worker/{worker}--{identifier}.json and optionally echo the same summary in structured output.
Report written: .hex-skills/runtime-artifacts/runs/{run_id}/audit-report/ln-629--global.md
Score: X.X/10 | Issues: N (C:N H:N M:N L:N)
Reference Files
Audit output schema: references/audit_output_schema.md
Critical Rules
Apply the already-loaded references/audit_worker_core_contract.md.
Do not auto-fix: Report only, lifecycle changes risk downtime
Deployment-aware: Adapt probe checks to deployment type (Kubernetes = probes required, bare metal = optional)
Effort realism: S = <1h, M = 1-4h, L = >4h
Exclusions: Skip CLI tools and scripts (no long-running lifecycle), skip serverless functions (platform-managed lifecycle)
Initialization order matters: Flag DB usage before DB init as HIGH regardless of context
Definition of Done
Apply the already-loaded references/audit_worker_core_contract.md.
contextStore parsed (deployment type, output_dir)
All 5 checks completed (bootstrap order, graceful shutdown, resource cleanup, signal handling, probes)
Findings collected with severity, location, effort, recommendation
Score calculated per references/audit_scoring.md
Report written to {output_dir}/ln-629--global.md (atomic single Write call)
Summary written per contract
Version: 3.0.0
Last Updated: 2025-12-23don't have the plugin yet? install it then click "run inline in claude" again.