* fix(#4192): honor explicit model pins on the claude runtime Two documented model-configuration contracts did not hold on the claude runtime (confirmed-bug scope from the issue triage): Finding 1 — model_profile_overrides.claude.<tier> was inert. Step 3 of resolveModelInternal gated runtime-aware tier resolution on configRuntime !== 'claude', so the key's only reader was never consulted, while workflows/settings-advanced.md writes it for claude-runtime users. A new step 4.5 resolves ONLY the user's override entry (never the builtin claude tier map, so unpinned installs keep resolving aliases). An override value that maps to a current tier alias collapses to that alias (byte-equivalent, the #2041 protection); anything else — a pinned older generation, a bare alias repoint, a non-Anthropic id — resolves verbatim. It sits after the resolve_model_ids:'omit' gate so an explicit project omit still wins (#2297) and before the alias return so resolve_model_ids:true cannot re-materialize the pin to the latest id. Finding 2 — fully-qualified claude-* ids in model_overrides were warn-dropped to tier resolution (mapClaudeOverrideForRuntime unmappable branch, #2041), while the docs promise any fully-qualified model id is valid. The unmappable branch now passes the pin through verbatim with a warn-once breadcrumb (text describes the pass-through). Dropping it silently unpinned the operator's explicit choice — the exact 'profile can misrepresent what actually runs' defect of #4192. Mappable ids and non-claude values behave exactly as before; resolveModelForTier shares the mapping; the tier honesty signal is unchanged (raw ids still report 'unknown'); the model_policy path is untouched. Docs updated to the agreed contract (CONFIGURATION.md false 'Claude example' corrected; how-to + shipped reference document the pin semantics, the fable alias, and the tier-override composition). * test(#4192): pin explicit model pin resolution on the claude runtime 28 failing-first rows across the resolver seam and the resolve-model CLI: pinned-generation fidelity (tier override + per-agent verbatim pins, object form, explicit runtime), unpinned controls byte-stable (no override, other runtime/tier, inherit, project omit, precedence), adversarial rows (prototype-chain keys, malformed values, warn-once dedupe, 64-char stderr cap), and behavioral AC1/AC2 rows through runGsdTools. The stale #2041 fall-through assertions now pin the pass-through contract; mappable-id collapse assertions unchanged. * chore(#4192): add changeset fragment * chore(#4192): backfill PR number in changeset fragment --------- Co-authored-by: ZCode <zcode@localhost>
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295 KiB