- Static ADAPTER_SKILL_CONFIGS array with all 10 adapter types
- CONFIG_BY_TYPE Map for O(1) lookup by adapter type string
- FALLBACK_CONFIG for unknown types (supportsInstall: false, never throws)
- resolveAdapterSkillConfig returns correct config for all known adapters
- listAdapterSkillConfigs returns full readonly config array
- All 15 unit tests pass, no regressions in full test suite
- Add AdapterSkillFormat type and AdapterSkillConfig interface to types.ts
- Create stub adapter-skill-config.ts (throws not implemented)
- Re-export new types and functions from index.ts
- Add comprehensive test file covering all 10 adapter types and fallback
