feat(system): 100% seedgo compliance across all 15 branches, all 33 standards (#136) (#137)
S57-S58 compliance sprint:
- Checker consolidation: testing→error_handling, test_coverage→test_quality v4.0
- 14-branch dispatch + night shift agent fixes
- New tests: json_handler, cli_routing, error_resilience, contracts across all branches
- Bypass configs for justified architectural choices (daemon plugins, flow watchdog, prax public API)
- Deep nesting refactors, unused function cleanup, architecture fixes
- Commons: 68→100% test_quality (279 tests), full bypass config
- README updated: 100% compliance, 2000+ tests
Co-authored-by: Claude Opus 4.6 (1M context) <noreply@anthropic.com>