Five follow-ups on the per-model settings map.
The one-time localStorage backfill read the override map once and then wrote
each model in turn, so a save by another tab during that pass was replaced by
this browser's older copy, against the migration's own "never overwrites"
contract. Re-fetching per model would cost a round trip each; instead the PUT
takes only_if_absent and the server tests and writes under one transaction.
gpu_ids arrived unbounded and normalize_model_override de-duplicated it by
scanning the list it was building, so a large authenticated array cost roughly
20x what the same work costs with a set (4.5s against 0.27s for a million
entries). The payload now bounds the field to the number of ids the normalizer
can store, and the dedupe uses a set.
A settings target opened from the Chat model picker carried no apiLoadable, so
the isGguf fallback mirrored an Ollama GGUF to the server. Ollama's blobs reach
that picker as custom-folder GGUFs under a .studio_links / ollama_links dir,
which local_model_resolver refuses to index, so the mirror advertised a load the
API can never make. The picker, the sidebar editor and the backfill now all use
the same classification.
The Hub settings page compared the loaded model to settingsTarget.id, but a GGUF
loaded from an inactive HF cache or straight off disk loads by path while
/status reports the clean public id, so the page ignored the live launch config
and showed saved or default values. It now also matches the settings identity
and the public id the backend would report.
A standalone .gguf gets a filename-derived format_variant from the inventory, so
the Hub row menu stored its settings under <path>:Q4_K_M while the Chat picker,
the detail card and the backfill all used the bare path. The row menu now uses
the bare path too.
Tests: publicModelId / residentModelIdMatches / isOllamaLinkPath /
settingsGgufVariantForRow in studio/frontend/tests, the create-only write and
the gpu_ids bound in studio/backend/tests, and the wiring in
tests/studio/test_model_picker_contracts.py.
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