refactor: split table models into Base/Table/Public for proper FastAPI serialization

Add ProductBase, ProductPublic, ProductWithInventory and
SkinConditionSnapshotBase, SkinConditionSnapshotPublic. Table models now inherit
from their Base counterpart and override JSON fields with sa_column. All
field_serializer hacks removed; FastAPI response models use the non-table Public
classes so Pydantic coerces raw DB dicts → typed models cleanly. ProductCreate
and SnapshotCreate now simply inherit their respective Base classes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/tests/test_health.py

@@ -1,6 +1,5 @@
 import uuid
 
-
 # ---------------------------------------------------------------------------
 # Medications
 # ---------------------------------------------------------------------------
@@ -32,9 +31,7 @@ def test_list_filter_kind(client):
     client.post(
         "/health/medications", json={"kind": "prescription", "product_name": "A"}
     )
-    client.post(
-        "/health/medications", json={"kind": "supplement", "product_name": "B"}
-    )
+    client.post("/health/medications", json={"kind": "supplement", "product_name": "B"})
     r = client.get("/health/medications?kind=supplement")
     assert r.status_code == 200
     data = r.json()
@@ -46,9 +43,7 @@ def test_list_filter_product_name(client):
     client.post(
         "/health/medications", json={"kind": "otc", "product_name": "Epiduo Forte"}
     )
-    client.post(
-        "/health/medications", json={"kind": "otc", "product_name": "Panoxyl"}
-    )
+    client.post("/health/medications", json={"kind": "otc", "product_name": "Panoxyl"})
     r = client.get("/health/medications?product_name=epid")
     assert r.status_code == 200
     data = r.json()
@@ -113,7 +108,11 @@ def test_create_usage(client, created_medication):
     mid = created_medication["record_id"]
     r = client.post(
         f"/health/medications/{mid}/usages",
-        json={"valid_from": "2026-01-01T08:00:00", "dose_value": 1.0, "dose_unit": "pea"},
+        json={
+            "valid_from": "2026-01-01T08:00:00",
+            "dose_value": 1.0,
+            "dose_unit": "pea",
+        },
     )
     assert r.status_code == 201
     data = r.json()
@@ -156,7 +155,9 @@ def test_update_usage(client, created_medication):
     )
     uid = r.json()["record_id"]
 
-    r2 = client.patch(f"/health/usages/{uid}", json={"dose_value": 2.5, "dose_unit": "mg"})
+    r2 = client.patch(
+        f"/health/usages/{uid}", json={"dose_value": 2.5, "dose_unit": "mg"}
+    )
     assert r2.status_code == 200
     assert r2.json()["dose_value"] == 2.5
     assert r2.json()["dose_unit"] == "mg"
@@ -247,8 +248,14 @@ def test_list_filter_flag(client):
 
 
 def test_list_filter_date_range(client):
-    client.post("/health/lab-results", json={**LAB_RESULT_DATA, "collected_at": "2026-01-01T00:00:00"})
-    client.post("/health/lab-results", json={**LAB_RESULT_DATA, "collected_at": "2026-06-01T00:00:00"})
+    client.post(
+        "/health/lab-results",
+        json={**LAB_RESULT_DATA, "collected_at": "2026-01-01T00:00:00"},
+    )
+    client.post(
+        "/health/lab-results",
+        json={**LAB_RESULT_DATA, "collected_at": "2026-06-01T00:00:00"},
+    )
     r = client.get("/health/lab-results?from_date=2026-05-01T00:00:00")
     assert r.status_code == 200
     data = r.json()
@@ -271,7 +278,9 @@ def test_get_lab_result_not_found(client):
 def test_update_lab_result(client):
     r = client.post("/health/lab-results", json=LAB_RESULT_DATA)
     rid = r.json()["record_id"]
-    r2 = client.patch(f"/health/lab-results/{rid}", json={"notes": "Recheck in 3 months"})
+    r2 = client.patch(
+        f"/health/lab-results/{rid}", json={"notes": "Recheck in 3 months"}
+    )
     assert r2.status_code == 200
     assert r2.json()["notes"] == "Recheck in 3 months"
 

backend/tests/test_product_model.py

@@ -1,9 +1,7 @@
 """Unit tests for Product.to_llm_context() — no database required."""
-from uuid import uuid4
 
 from typing import Any
-
-import pytest
+from uuid import uuid4
 
 from innercontext.models import Product
 from innercontext.models.enums import (

backend/tests/test_products.py

@@ -55,7 +55,9 @@ def test_list_filter_category(client, client_and_data=None):
         "recommended_time": "both",
         "leave_on": True,
     }
-    r1 = client.post("/products", json={**base, "name": "Moist", "category": "moisturizer"})
+    r1 = client.post(
+        "/products", json={**base, "name": "Moist", "category": "moisturizer"}
+    )
     r2 = client.post("/products", json={**base, "name": "Ser", "category": "serum"})
     assert r1.status_code == 201
     assert r2.status_code == 201
@@ -96,7 +98,12 @@ def test_list_filter_is_medication(client):
     # is_medication=True requires usage_notes (model validator)
     client.post(
         "/products",
-        json={**base, "name": "Med", "is_medication": True, "usage_notes": "Apply pea-sized amount"},
+        json={
+            **base,
+            "name": "Med",
+            "is_medication": True,
+            "usage_notes": "Apply pea-sized amount",
+        },
     )
 
     r = client.get("/products?is_medication=true")

backend/tests/test_routines.py

@@ -1,6 +1,5 @@
 import uuid
 
-
 # ---------------------------------------------------------------------------
 # Routines
 # ---------------------------------------------------------------------------

backend/tests/test_skincare.py

@@ -112,9 +112,7 @@ def test_update_snapshot_concerns(client):
 
 
 def test_update_snapshot_not_found(client):
-    r = client.patch(
-        f"/skincare/{uuid.uuid4()}", json={"overall_state": "good"}
-    )
+    r = client.patch(f"/skincare/{uuid.uuid4()}", json={"overall_state": "good"})
     assert r.status_code == 404