Add dermatology and ophthalmology domains to NER catalog

[maziyarpanahi]

Summary

Dermatology and ophthalmology are common specialty note types with no OpenMed NER domain. Neither appears in zero_shot defaults.json nor in get_model_suggestions routing, so specialty text falls back to generic clinical labels and the catalog cannot surface specialty coverage. Both reuse existing finding/anatomy/measurement canonical labels, making this small additive scaffolding.

Scope

• Add 'dermatology' and 'ophthalmology' domains to zero_shot/data/label_maps/defaults.json (dermatology: Skin lesion, Morphology, Distribution, Anatomy; ophthalmology: Eye finding, Visual acuity, Intraocular pressure, Anatomy).
• Add dermatology routing keywords (rash, lesion, macule, papule, erythema, pruritus, biopsy of skin) and ophthalmology routing keywords (visual acuity, intraocular pressure, retina, cornea, glaucoma, fundus) to get_model_suggestions.
• Reuse FINDING, ANATOMY, MEASUREMENT canonical labels; add SKIN_LESION and EYE_FINDING only if reuse is insufficient.
• Add Dermatology and Ophthalmology entries to _CATEGORY_ENTITY_TYPES.

Acceptance criteria

• available_domains() includes both 'dermatology' and 'ophthalmology' with non-empty label sets.
• get_model_suggestions routes a dermatology sentence to Dermatology and an ophthalmology sentence to Ophthalmology.
• A test asserts both domains' labels normalise to known canonical labels.
• test suite green: .venv/bin/python -m pytest tests/ -q

Out of scope

• Training specialty models.
• Image-based dermatology (text only).
• Adding canonical labels that duplicate FINDING/ANATOMY.

Files

• openmed/zero_shot/data/label_maps/defaults.json
• openmed/core/model_registry.py
• openmed/core/labels.py
• tests/unit/ner/test_label_map_consistency.py

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Task: OM-153 · Milestone: Backlog · Priority: P3 · Size: S
Depends on: — · Blocks: —
Roadmap: OPENMED_V2_UNIFIED_ROADMAP.md §3.5 (new clinical NER domains)
Spec: PLANS/V2/EXECUTION/tasks/OM-153.md