[pacocartones]

Summary

• getComboTargetCatalogMetadata (src/app/api/v1/models/catalog.ts) took a combo member's max_output_tokens from the raw synced row (synced.limit_output). An operator's max_output_tokens override in model_capability_overrides reached the per-model catalog entry but not the combo built from it, so the combo advertised the pre-override minimum.
• canonical.limits.maxOutputTokens, resolved a few lines above, already applies the override. max_input_tokens already reads canonical.limits. Output now does the same, with the synced row and the static spec kept as fallbacks.
• With the issue's shape (override 65536 on a member whose synced row says 1048576, plus a member at 384000), the combo goes from max_output_tokens: 384000 to 65536.

Related Issues

• Fixes fix(api): Combo catalog metadata ignores max_output_tokens capability overrides #16515

Target Branch

• Base is the active release/v3.8.x branch (the highest open release/v*), not main
• New feature? From 3.8.55 on it is held with the v4-feature label for the v4 channel

Validation

• Change type: other (models catalog)
• Focused tests and category gates from the golden path
• npm run lint (eslint on the changed files: no new findings; the existing no-unused-vars findings in catalog.ts are on untouched lines and also show on the base)
• Reconciled with the current active release base; focused checks rerun afterward
• Production-code changes include a new or updated automated test in this PR

Tests Added Or Updated

• tests/unit/16515-combo-max-output-override.test.ts (new): fails on the base (actual: 384000, expected: 65536) and passes with the fix.

Coverage Notes

• With the fix, the new test plus models-catalog-route, auto-combo-context-advertising, models-catalog-hidden-combo-leaves and combo-context-prefix-resolution give 70/70 passing.

Reviewer Notes

• When no override is set, canonical.limits.maxOutputTokens takes the synced row first, as before. It also takes the registry model's value before the static spec, which is the order the per-model entry already uses.