Lane-based merge for config-management-v1-01KRCDEC.
Mission ID: 01KRCDEC7V1843QZ61CY0PH842, mission_number=10.

WPs:
- WP01: ConfigDependencyInterface + dependency graph (DAG + cycle detection)
- WP02: ConfigSyncSerializer + deterministic YAML emitter
- WP03: config:export CLI + ConfigExporter
- WP04: config:import CLI + ConfigImporter (DAG-ordered)
- WP05: config:diff + config:status CLIs + ConfigDiffer/StatusReporter
- WP06: config:validate CLI + ConfigSyncValidator
- WP07: config:reset CLI + config.audit channel
- WP08: BackendRestrictionEnforcer (sql-blob/sql-column only)
- WP09: config:* CLI namespace reservation with fail-fast collision detection
- WP10: round-trip + cycle detection integration tests
- WP11: charter §5.5 amendment + cookbook + conventions + CHANGELOG + public-surface-map

Implements FR-001..061. Refs: docs/specs/config-management-v1.md, ADR 018.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>