shannon/.claude/commands/review.md

description

description
Review code changes for Shannon-specific patterns, security, and common mistakes

Review the current changes (staged or working directory) with focus on Shannon-specific patterns and common mistakes.

Step 1: Gather Changes

Run these commands to understand the scope:

git diff --stat HEAD
git diff HEAD

Step 2: Check Shannon-Specific Patterns

Error Handling (CRITICAL)

• All errors use PentestError - Never use raw Error. Use new PentestError(message, type, retryable, context)
• Error type is appropriate - Use correct type: 'config', 'network', 'tool', 'prompt', 'filesystem', 'validation', 'billing', 'unknown'
• Retryable flag matches behavior - If error will be retried, set retryable: true
• Context includes debugging info - Add relevant paths, tool names, error codes to context object
• Never swallow errors silently - Always log or propagate errors

Audit System & Concurrency (CRITICAL)

• Mutex protection for parallel operations - Use sessionMutex.lock() when updating session.json during parallel agent execution
• Reload before modify - Always call this.metricsTracker.reload() before updating metrics in mutex block
• Atomic writes for session.json - Use atomicWrite() for session metadata, never fs.writeFile() directly
• Stream drain handling - Log writes must wait for buffer drain before resolving
• Semaphore release in finally - Git semaphore must be released in finally block

Claude SDK Integration (CRITICAL)

• MCP server configuration - Verify Playwright MCP uses --isolated and unique --user-data-dir
• Prompt variable interpolation - Check all {{VARIABLE}} placeholders are replaced
• Turn counting - Increment turnCount on assistant messages, not tool calls
• Cost tracking - Extract cost from final result message, track even on failure
• API error detection - Check for "session limit reached" (fatal) vs other errors

Configuration & Validation (CRITICAL)

• FAILSAFE_SCHEMA for YAML - Never use default schema (prevents code execution)
• Security pattern detection - Check for path traversal (../), HTML injection (<>), JavaScript URLs
• Rule conflict detection - Rules cannot appear in both avoid AND focus
• Duplicate rule detection - Same type:url_path cannot appear twice
• JSON Schema validation before use - Config must pass AJV validation

Session & Agent Management (CRITICAL)

• Deliverable dependencies respected - Exploitation agents only run if vulnerability queue exists AND has items
• Queue validation before exploitation - Use safeValidateQueueAndDeliverable() to check eligibility
• Git checkpoint before agent run - Create checkpoint for rollback on failure
• Git rollback on retry - Call rollbackGitWorkspace() before each retry attempt
• Agent prerequisites checked - Verify prerequisite agents completed before running dependent agent

Parallel Execution

• Promise.allSettled for parallel agents - Never use Promise.all (partial failures should not crash batch)
• Staggered startup - 2-second delay between parallel agent starts to prevent API throttle
• Individual retry loops - Each agent retries independently (3 attempts max)
• Results aggregated correctly - Handle both 'fulfilled' and 'rejected' results from Promise.allSettled

Step 3: TypeScript Safety

Type Assertions (WARNING)

• No double casting - Never use as unknown as SomeType (bypasses type safety)
• Validate before casting - JSON parsed data should be validated (JSON Schema) before as Type
• Prefer type guards - Use instanceof or property checks instead of assertions where possible

Null/Undefined Handling

• Explicit null checks - Use if (x === null || x === undefined) not truthy checks for critical paths
• Nullish coalescing - Use ?? for null/undefined, not || which also catches empty string/0
• Optional chaining - Use ?. for nested property access on potentially undefined objects

Imports & Types

• Type imports - Use import type { ... } for type-only imports
• No implicit any - All function parameters and returns must have explicit types
• Readonly for constants - Use Object.freeze() and Readonly<> for immutable data

Step 4: Security Review

Defensive Tool Security

• No credentials in logs - Check that passwords, tokens, TOTP secrets are not logged to audit files
• Config file size limit - Ensure 1MB max for config files (DoS prevention)
• Safe shell execution - Command arguments must be escaped/sanitized

Code Injection Prevention

• YAML safe parsing - FAILSAFE_SCHEMA only
• No eval/Function - Never use dynamic code evaluation
• Input validation at boundaries - URLs, paths validated before use

Step 5: Common Mistakes to Avoid

Anti-Patterns Found in Codebase

• Catch + re-throw without context - Don't just throw error, wrap with additional context
• Silent failures in session loading - Corrupted session files should warn user, not silently reset
• Duplicate retry logic - Don't implement retry at both caller and callee level
• Hardcoded error message matching - Prefer error codes over regex on error.message
• Missing timeout on long operations - Git operations and API calls should have timeouts

Code Quality

• No dead code added - Remove unused imports, functions, variables
• No over-engineering - Don't add abstractions for single-use operations
• Comments only where needed - Self-documenting code preferred over excessive comments
• Consistent file naming - kebab-case for files (e.g., queue-validation.ts)

Step 6: Provide Feedback

For each issue found:

1. Location: File and line number
2. Issue: What's wrong and why it matters
3. Fix: How to correct it (with code example if helpful)
4. Severity: Critical / Warning / Suggestion

Severity Definitions

• Critical: Will cause bugs, crashes, data loss, or security issues
• Warning: Code smell, inconsistent pattern, or potential future issue
• Suggestion: Style improvement or minor enhancement

Summarize with:

• Total issues by severity
• Overall assessment (Ready to commit / Needs fixes / Needs discussion)

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Now review the current changes.