#3179 fix(cli): CliUserError for channel add missing API key

Summary (AI generated)

• Convert channel add missing API key to CliUserError so it is filtered from PostHog exception capture
• Rebased onto latest main; channel-create API failures stay plain Error with formatted API bodies (duplicate recovery + PostHog observability unchanged)
• Extend PostHog tests to assert channel-create RBAC/duplicate failures remain captured; add formatCapgoCliInvokeError coverage

Motivation (AI generated)

PostHog issue channel add unhandled_error highlighted noisy tracking for expected CLI states. Review feedback confirmed channel-creation RBAC/duplicate failures must stay observable in error tracking — only missing API key should become CliUserError.

Business Impact (AI generated)

Keeps error tracking signal for real channel-create failures while silencing the common missing-key configuration state. Aligns with duplicate-channel recovery shipped on main.

Test Plan (AI generated)

• bun run lint (cli)
• bun run test:posthog-exception
• bun run test:init-app-conflict
• bun run test:channel-add-exists
• CI: Run Capgo CLI integration tests (pass — https://github.com/Cap-go/capgo.app/actions/runs/32851500650/job/97813355613)
• CI: full test matrix green (0 fail, 0 pending)
• CodeRabbit APPROVED (blocked on org rate limit — awaiting @coderabbitai approve / on-demand review)

Generated with AI

  

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Summary by CodeRabbit

• Bug Fixes
  • Improved channel creation error handling for missing API keys and duplicate channel names.
  • Added clearer CLI error messages for permission, Edge Function, infrastructure, and duplicate-channel failures.
  • Improved recognition and reporting of channel name conflicts.
  • Improved handling when a duplicate channel already exists but cannot be accessed.
  • Improved consistency when reporting channel creation failures across different error conditions.