Supersedes contributor PR #1511 (lost9999), which removed the label-suffix
logic in _deduplicate_model_ids() but left the underlying shared-reference
bug intact — IDs would still be silently corrupted across provider groups,
just with cleaner-looking labels.
## Bug shape
When multiple unconfigured providers (Ollama / HuggingFace / custom
endpoints / Google Gemini CLI / Xiaomi / etc.) all fell through to the
'else' branch in api/config.py:get_models_grouped() that ends with:
groups.append({..., "models": auto_detected_models})
every group ended up sharing the SAME list reference AND the SAME dicts
inside. When _deduplicate_model_ids() then mutated those dicts to add
@provider_id: prefixes and provider-name parentheticals, the changes were
applied to every group that referenced the same dict.
Visible symptom: user 'vishnu' reported the dropdown showing
'Deepseek V4 Flash (Xiaomi) (Ollama) (HuggingFace) (Google-Gemini-Cli)'
on every group. Hidden symptom (worse): the 'id' field collapsed to
'@xiaomi:deepseek-v4-flash' on every group too, so clicking the entry
under any group routed the request to Xiaomi.
## Fix
api/config.py:2078 — wrap auto_detected_models in copy.deepcopy() at the
groups.append site so each group gets its own independent dicts. The
existing _deduplicate_model_ids() logic is correct and unchanged; the
bug was in the assignment site, not the dedup function.
The single-parenthetical disambiguation in labels is retained because
the composer chip (composer-model-label) shows the model label without
the optgroup header context — 'Deepseek V4 Flash (Ollama)' is more
useful than ambiguous 'Deepseek V4 Flash' there.
## Tests
tests/test_issue1511_dedup_shared_reference.py — 3 new tests:
- test_groups_have_independent_model_lists: structural invariant pin
- test_unconfigured_providers_no_shared_dedup_bleed: end-to-end against
the corrected code path; verifies each group gets its own @provider_id:
prefix and exactly ONE provider parenthetical per disambiguated label
- test_shared_reference_pre_fix_demonstrates_corruption: documents the
broken state that motivated the fix
Full suite: 3925 → 3928 passing (+3 new, 0 regressions).
Co-authored-by: lost9999 <56498264+lost9999@users.noreply.github.com>
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