refactor: update sleep session logic, models, and agent protocols

AGENTS.md

@@ -56,6 +56,12 @@ Baby monitor - self-hosted web app for tracking infant sleep. Dual-stack monorep
 - **Frontend JS Slop**: NEVER create `.js` or `.jsx` files for the frontend. Use only TypeScript (`.ts`, `.tsx`). Write clean, type-safe code.
 - **Assumption Error**: NEVER assume the content of ANY files. ALWAYS read the target file to confirm its structure and implementation before modifying or referencing it.
 
+## MANDATORY EXECUTION PROTOCOLS (INJECTABLE)
+
+The following protocols must be strictly adhered to upon injection:
+- **Read Before Edit**: ALWAYS read the entire target file before performing any `edit` operation.
+- **Post-Edit Verification**: Immediately after an edit, verify that no lines have been duplicated.
+- **Stability Check**: Following any code change, run both backend and frontend services AND the full test suite to ensure system stability.
 ## COMMANDS
 
 ### Backend Development

backend/app/models.py

@@ -9,6 +9,5 @@ class SleepSession(SQLModel, table=True):
     id: Optional[int] = Field(default=None, primary_key=True)
     start_time: datetime = Field(nullable=False)
     end_time: Optional[datetime] = Field(default=None, nullable=True)
-    notes: Optional[str] = Field(default=None)
     created_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))
     updated_at: datetime = Field(default_factory=lambda: datetime.now(timezone.utc))

backend/app/schemas.py

@@ -6,22 +6,17 @@ from pydantic import BaseModel
 class SleepSessionCreate(BaseModel):
     start_time: datetime
 
-
 class SleepSessionUpdate(BaseModel):
     start_time: Optional[datetime] = None
     end_time: Optional[datetime] = None
-    notes: Optional[str] = None
-
 
 class SleepSessionRead(BaseModel):
     id: int
     start_time: datetime
     end_time: Optional[datetime]
-    notes: Optional[str]
     created_at: datetime
     updated_at: datetime
 
-
 class SessionListResponse(BaseModel):
     sessions: List[SleepSessionRead]
     total: int

frontend/src/components/stats/SessionList.tsx

@@ -4,7 +4,7 @@ import { useSettings } from '../../hooks/useSettings';
 import { Pagination } from './Pagination';
 import { Edit2, Check, X, Trash2 } from 'lucide-react';
 import type { SleepSessionRead } from '../../types';
-import { formatDateTime, toLocalDatetimeInputValue, getDurationMinutes, formatMinutes } from '../../utils/time';
+import { formatDateTime, toLocalDatetimeInputValue, getDurationMinutes, formatMinutes, toUTCFromLocalInput } from '../../utils/time';
 
 export function SessionList() {
   const { sessions, isLoading, updateSession, deleteSession, isDeleting } = useSessions();
@@ -29,13 +29,13 @@ export function SessionList() {
 
   const handleSave = async (id: number) => {
     try {
-       await updateSession({
-         sessionId: id,
-         payload: {
-           start_time: new Date(editStart).toISOString(),
-           end_time: editEnd ? new Date(editEnd).toISOString() : undefined,
-         }
-       });
+      await updateSession({
+        sessionId: id,
+        payload: {
+          start_time: toUTCFromLocalInput(editStart),
+          end_time: editEnd ? toUTCFromLocalInput(editEnd) : undefined,
+        },
+      });
       setEditingId(null);
     } catch (err) {
       console.error(err);

frontend/src/utils/time.ts

@@ -38,9 +38,15 @@ export function adjustForTimezone(utcMinutes: number): number {
  * @returns string in "YYYY-MM-DDTHH:MM" format
  */
 export function toLocalDatetimeInputValue(date: Date): string {
-  const offset = date.getTimezoneOffset() * 60 * 1000;
-  const localDate = new Date(date.getTime() - offset);
-  return localDate.toISOString().slice(0, 16);
+  const formatter = new Intl.DateTimeFormat('sv-SE', {
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+    hour12: false,
+  });
+  return formatter.format(date).replace(' ', 'T');
 }
 
 export function formatElapsedTime(utcTimestamp: string): string {

todo.md

@@ -19,10 +19,10 @@ exitcode '1': failure
 ```
 
 - [ ] Editing a sleep session in "sleep sessions", when I click the edit button the times show up as UTC but should show as my local timezone
-- [/] We should drop the "notes" column from the sleep_session table
+- [x] We should drop the "notes" column from the sleep_session table
 - [x] Switch over to oh-my-opencode and try it out
 - [x] Adda footer at the bottom of the app that shows the version (aka git tag) of the app
-- [-] Fix race condition of gitea workflows
+- [x] Fix race condition of gitea workflows
 
 If both workflows run at the same time, a race condition occurs:
 1. Collision: Both workflows will query the latest tag (e.g., v1.0.5) and calculate the same next version (v1.0.6).