Validated on the combined 12-PR batch board + the resolved merge against the post-#11232 tip: focused suites 73/73 (learned-reasoning-effort-caps, synced-capabilities-learned-effort-override, synced-effort-suffix-learned-validation, effort-tiers-loop-catalog-e2e, reasoning-effort-clamp-and-retry, reasoning-effort-learned-capability) + opencode-plugin effort-tier-variants 4/4, typecheck:core clean, gates within baseline. The stacked-branch conflict after #11232 squash-landed was resolved by hand (the learned-caps module keeps both the Set API and the new model-scoped lookup). The effort_tiers loop is closed end-to-end: catalog advertises exactly what the upstream accepts, and -<tier> suffix variants resolve against the learned set. Thank you @maxmad64bis!
Merged after conflict resolution in modelMetadataRegistry.ts: the tip's effortTiers chain (declared efforts → declared tiers → undefined-if-thinking-declared → codex extension) now carries this PR's GLM guard as the final-fallback override — GLM-family models without a provider-declared contract get the authoritative empty tier list instead of generic OpenAI tiers. GLM/ZCode suites 40/40 on the resolved branch. Closes#10962. Thank you @xz-dev!
