fix: vitals_baseline dynamic query parameter mismatch

**Bug:** POST /api/vitals/baseline threw UndefinedParameter
**Cause:** Dynamic SQL generation had desynchronized column names and placeholders
**Fix:** Rewrote to use synchronized insert_cols, insert_placeholders, update_fields arrays

- Track param_idx correctly (start at 3 after pid and date)
- Build INSERT columns and placeholders in parallel
- Cleaner, more maintainable code
- Fixes Ruhepuls entry error

backend/routers/vitals_baseline.py

@@ -99,52 +99,83 @@ def create_or_update_baseline(
     """Create or update baseline entry (upsert on date)."""
     pid = get_pid(x_profile_id)
 
-    # Build dynamic update columns (only non-None fields)
-    fields = []
+    # Build dynamic INSERT columns and UPDATE fields
+    insert_cols = []
+    insert_placeholders = []
+    update_fields = []
     values = [pid, entry.date]
+    param_idx = 3  # Start after $1 (pid) and $2 (date)
 
     if entry.resting_hr is not None:
-        fields.append("resting_hr = COALESCE(EXCLUDED.resting_hr, vitals_baseline.resting_hr)")
+        insert_cols.append("resting_hr")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"resting_hr = COALESCE(EXCLUDED.resting_hr, vitals_baseline.resting_hr)")
         values.append(entry.resting_hr)
+        param_idx += 1
+
     if entry.hrv is not None:
-        fields.append("hrv = COALESCE(EXCLUDED.hrv, vitals_baseline.hrv)")
+        insert_cols.append("hrv")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"hrv = COALESCE(EXCLUDED.hrv, vitals_baseline.hrv)")
         values.append(entry.hrv)
+        param_idx += 1
+
     if entry.vo2_max is not None:
-        fields.append("vo2_max = COALESCE(EXCLUDED.vo2_max, vitals_baseline.vo2_max)")
+        insert_cols.append("vo2_max")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"vo2_max = COALESCE(EXCLUDED.vo2_max, vitals_baseline.vo2_max)")
         values.append(entry.vo2_max)
+        param_idx += 1
+
     if entry.spo2 is not None:
-        fields.append("spo2 = COALESCE(EXCLUDED.spo2, vitals_baseline.spo2)")
+        insert_cols.append("spo2")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"spo2 = COALESCE(EXCLUDED.spo2, vitals_baseline.spo2)")
         values.append(entry.spo2)
+        param_idx += 1
+
     if entry.respiratory_rate is not None:
-        fields.append("respiratory_rate = COALESCE(EXCLUDED.respiratory_rate, vitals_baseline.respiratory_rate)")
+        insert_cols.append("respiratory_rate")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"respiratory_rate = COALESCE(EXCLUDED.respiratory_rate, vitals_baseline.respiratory_rate)")
         values.append(entry.respiratory_rate)
+        param_idx += 1
+
     if entry.body_temperature is not None:
-        fields.append("body_temperature = COALESCE(EXCLUDED.body_temperature, vitals_baseline.body_temperature)")
+        insert_cols.append("body_temperature")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"body_temperature = COALESCE(EXCLUDED.body_temperature, vitals_baseline.body_temperature)")
         values.append(entry.body_temperature)
+        param_idx += 1
+
     if entry.resting_metabolic_rate is not None:
-        fields.append("resting_metabolic_rate = COALESCE(EXCLUDED.resting_metabolic_rate, vitals_baseline.resting_metabolic_rate)")
+        insert_cols.append("resting_metabolic_rate")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"resting_metabolic_rate = COALESCE(EXCLUDED.resting_metabolic_rate, vitals_baseline.resting_metabolic_rate)")
         values.append(entry.resting_metabolic_rate)
+        param_idx += 1
+
     if entry.note:
-        fields.append("note = COALESCE(EXCLUDED.note, vitals_baseline.note)")
+        insert_cols.append("note")
+        insert_placeholders.append(f"${param_idx}")
+        update_fields.append(f"note = COALESCE(EXCLUDED.note, vitals_baseline.note)")
         values.append(entry.note)
+        param_idx += 1
 
     # At least one field must be provided
-    if not fields:
+    if not insert_cols:
         raise HTTPException(400, "At least one baseline vital must be provided")
 
-    # Build value placeholders
-    placeholders = ", ".join([f"${i}" for i in range(1, len(values) + 1)])
-
     with get_db() as conn:
         cur = get_cursor(conn)
         query = f"""
-            INSERT INTO vitals_baseline (profile_id, date, {', '.join([f.split('=')[0].strip() for f in fields])})
-            VALUES ($1, $2, {', '.join([f'${i}' for i in range(3, len(values) + 1)])})
+            INSERT INTO vitals_baseline (profile_id, date, {', '.join(insert_cols)})
+            VALUES ($1, $2, {', '.join(insert_placeholders)})
             ON CONFLICT (profile_id, date)
-            DO UPDATE SET {', '.join(fields)}, updated_at = NOW()
+            DO UPDATE SET {', '.join(update_fields)}, updated_at = NOW()
             RETURNING *
         """
-        cur.execute(query, values)
+        cur.execute(query, tuple(values))
         return r2d(cur.fetchone())