- Add config service with JSON persistence in ~/.config/hi-kid/config.json
- Add IPC channels: config:get, config:set, config:changed
- Agent now supports dynamic aiName and systemPrompt with {{AI_NAME}} placeholder
- Extend SettingsPanel with gear icon and config form dropdown
- Replace all hardcoded "Kitten" references with dynamic aiName prop
- LLM parameter changes trigger automatic Agent rebuild