fixes graphics

backend/app/db/migrate_fitness.py

@@ -4,13 +4,15 @@ from sqlalchemy import inspect, select, text
 from sqlalchemy.orm import Session
 
 from app.db.base import engine
-from app.db.models import FitnessProfile, StepLog
+from app.db.models import BodyMetric, FitnessProfile, StepLog
+from app.fitness.body_composition import compute_body_composition
 from app.fitness.calculators import DEFAULT_NEAT_KCAL, compute_targets, macro_targets
 
 logger = logging.getLogger(__name__)
 
 TDEE_V2_BACKFILL = "fitness_tdee_v2_backfill"
 MACROS_GKG_BACKFILL = "fitness_macros_gkg_v1"
+NAVY_BODY_FAT_CM_BACKFILL = "fitness_navy_body_fat_cm_v1"
 
 
 def _table_exists(table: str) -> bool:
@@ -142,6 +144,52 @@ def backfill_macros_gkg(*, force: bool = False) -> int:
     return updated
 
 
+def backfill_navy_body_fat_cm(*, force: bool = False) -> int:
+    """Recalculate Navy body composition after fixing the cm-based formula."""
+    if not _table_exists("body_metrics"):
+        _ensure_schema_migrations_table()
+        if not _migration_applied(NAVY_BODY_FAT_CM_BACKFILL):
+            _mark_migration_applied(NAVY_BODY_FAT_CM_BACKFILL)
+        return 0
+    _ensure_schema_migrations_table()
+    if not force and _migration_applied(NAVY_BODY_FAT_CM_BACKFILL):
+        return 0
+
+    updated = 0
+    with Session(engine) as db:
+        profiles = {
+            profile.user_id: profile
+            for profile in db.scalars(select(FitnessProfile)).all()
+        }
+        rows = db.scalars(
+            select(BodyMetric).where(BodyMetric.body_fat_method == "navy")
+        ).all()
+        for row in rows:
+            profile = profiles.get(row.user_id)
+            computed = compute_body_composition(
+                sex=str(profile.sex if profile else "male"),
+                height_cm=float(profile.height_cm if profile else 170),
+                weight_kg=row.weight_kg,
+                neck_cm=row.neck_cm,
+                waist_cm=row.waist_cm,
+                hip_cm=row.hip_cm,
+            )
+            if computed.get("body_fat_pct") is None:
+                continue
+            row.body_fat_pct = computed.get("body_fat_pct")
+            row.body_fat_method = computed.get("body_fat_method")
+            row.whr = computed.get("whr")
+            row.lbm_kg = computed.get("lbm_kg")
+            row.ffmi = computed.get("ffmi")
+            updated += 1
+        db.commit()
+
+    if not _migration_applied(NAVY_BODY_FAT_CM_BACKFILL):
+        _mark_migration_applied(NAVY_BODY_FAT_CM_BACKFILL)
+    logger.info("Navy body fat cm backfill: updated %s body metric(s)", updated)
+    return updated
+
+
 def run_fitness_migrations() -> None:
     inspector = inspect(engine)
 
@@ -223,3 +271,4 @@ def run_fitness_migrations() -> None:
 
     backfill_tdee_targets()
     backfill_macros_gkg()
+    backfill_navy_body_fat_cm()