[specs] Update layout specification - 2026-01-05

[github-actions]

Layout Specification Update

This PR updates specs/layout.md with the latest patterns extracted from compiled workflow files and source code.

What Changed

• Updated date: Changed from 2025-12-30 to 2026-01-05
• Lock file count: Updated from 128 to 127 workflows analyzed
• Added runtime action scripts section: Documented 40+ JavaScript scripts and 9 shell scripts in /tmp/gh-aw/actions/
• Expanded temporary paths: Added 15+ new temporary path entries including session-data, weekly-issues-data, workflow-logs
• Added safe-outputs MCP files: Documented config.json, tools.json, validation.json, mcp-server.cjs, outputs.jsonl
• Added job patterns: Added bead, bead_update_state, release_bead job names
• Added repository memory patterns: Documented repo-memory-campaigns and repo-memory-(ID) patterns
• Expanded Go constants section: Added Step ID constants, Feature Flag constants, Pre-Activation output names, Path constants
• Updated GitHub Actions SHA: Updated githubnext/gh-aw/actions/setup from 523f6cf to 623e612
• Improved extraction summary: Updated counts to reflect comprehensive analysis (90+ paths, 27 job names, 45+ artifacts, 70+ constants)

Extraction Summary

• Lock files analyzed: 127
• Actions cataloged: 18
• Artifacts documented: 45+
• Job patterns found: 27
• File paths listed: 90+
• Runtime action scripts: 40+ JavaScript, 9 shell scripts
• Go constants: 70+ (versions, timeouts, paths, features)
• JavaScript patterns: Path construction and imports
• Environment variables: 10+ workflow and model config vars
• Step IDs: 5 pre-activation identifiers
• Feature flags: 3 constants
• GitHub expressions: 50+ allowed expressions

Source Analysis

• Scanned all .lock.yml files in .github/workflows/ using yq and grep
• Reviewed Go code in pkg/workflow/, pkg/cli/, pkg/constants/, pkg/parser/
• Reviewed JavaScript code in actions/setup/js/
• Extracted patterns using YAML parsing and regex matching
• Documented constants from pkg/constants/constants.go

Changes Summary

• Lines changed: 135 additions, 9 deletions
• Total lines: 621 lines (increased from 495)
• New sections: Runtime Action Scripts with complete script inventory
• Enhanced sections: Temporary paths, Constants, Artifacts

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