[alick-liming]

Summary

Adds eight channel integration-* commands for channel-owned dedicated integrations, alongside the existing integration * commands for public integrations. The bundled Agent Skill and bilingual README explain how ownership determines the API, the different permission requirements, and why permission errors must not switch command families.

Generated commands use the typed SDK, preserve partial updates and explicit empty settings, and keep public integration command names compatible. Depends on the SDK change in flashcatcloud/go-flashduty#109; the dependency is pinned to its pushed commit so the CLI builds independently.

Validation

• make: formatting, repository-pinned lint (0 issues), full race tests, and build passed.
• go run ./internal/cmd/skilldoc check: all command cards and examples passed.
• HTTP regressions cover all eight paths, ownership/key output, required channel IDs, omitted/null/empty settings, and access-denied propagation without API fallback.
• Read-only development smoke checks passed for public list/detail and dedicated list. Dedicated detail currently returns 401; the development gateway still requires JWT for that endpoint and the six dedicated write endpoints. Their end-to-end App Key validation remains dependent on backend authorization rollout.