- Add listSkillAgents and listAgentSkills IPC channels with Zod schemas
- Create SkillDetail component with metadata, file viewer, update check, delete
- Create SkillAgentToggles with discriminated union for skill/agent-centric modes
- Wire SkillDetail into SkillsSection right column replacing placeholder
- Remove duplicate skill method declarations from DesktopApi type
- Add importSkill, listSkills, getSkillDetail, deleteSkill, assignSkillToAgent, removeSkillFromAgent, checkSkillUpdate IPC channels
- Add Zod validation schemas for all skill payloads in contracts.ts
- Create ipc-skill-handlers.ts with company existence checks and domain-changed events on mutations
- Add SkillRecord, SkillImportResult, SkillUpdateStatus types to shared/types.ts
- Wire registerSkillHandlers into ipc-domain-handlers.ts
- Add skillService to RegisterDomainHandlersDependencies interface
ZacharyZhang-NY