fix: fall back to lower priority channels

[SameTrouble]

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Summary by CodeRabbit

• Enhancements

  • Improved channel selection to consistently honor ability-level priorities.
  • Retry attempts can now move selection to lower-priority eligible channels.
  • Channel selection better respects request paths and models before choosing a channel.
  • Disabled abilities are excluded from cached channel selection.
  • Selection now falls back to the next eligible channel when a higher-priority option cannot handle the request.

• Bug Fixes

  • Corrected priority handling after channel cache updates.
  • Improved consistency between cached and non-cached channel selection.

[coderabbitai]

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Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: ae621f94-476a-4022-895c-ba06e463849b

📥 Commits

Reviewing files that changed from the base of the PR and between a63364d and 4581663.

📒 Files selected for processing (3)

• model/ability.go
• model/channel_cache.go
• model/channel_priority_test.go

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Walkthrough

Channel selection now uses enabled ability priorities for retry ordering in database and cached paths. Request-path filtering occurs before priority selection, and tests cover retries, disabled abilities, ability overrides, cache updates, and route eligibility.

Changes

Priority-aware channel selection

Layer / File(s)	Summary
Database priority selection model/ability.go, model/channel_priority_test.go	GetChannel filters eligible abilities before selecting descending priorities and weighted channel IDs; tests cover retries and route-ineligible higher-priority channels.
Cached priority selection model/channel_cache.go, model/channel_priority_test.go	The cache stores ability-derived priorities and uses them for retry selection, including disabled abilities, ability overrides, and refreshed channel metadata.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Suggested reviewers: calcium-ion

Poem

A rabbit sorts the channels bright,
By carrot-priority, left to right.
Retry hops to the next-best way,
While route guards choose where paths may stay.
Cache and database dance tonight!

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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Warning

⚠️ This pull request shows signs of AI-generated slop (description_diff_mismatch, ai_padded_prose). It has been flagged by CodeRabbit slop detection and should be reviewed carefully.