✔️ STICKIES / TODOLIST — CANONICAL CHECKLIST
A. BASELINE
B. FILTERS
- tasksonly
- events
- nontasks
- attachments
- noattachments
- urgent
- completed
- softdeleted
- tags
- subject search
- combos
C. EDIT
- Edit text
- Visibility under filters
D. PAPERCLIP
- Add attachment → count++ → icon on
- Remove last attachment → count=0 → icon off
- Visibility under attachments/noattachments filters
E. ADD / DELETE
- Add item
- Delete item
- Batch delete
F. SORTS
- UploadedAt asc/desc
- Subject asc/desc
- Deadline asc/desc
- UpdatedAt asc/desc
G. DEADLINES
- Deadline = filter+sort hybrid
- Deadline‑only = true filter
H. ROUTING
- Paperclip → Attachments → back
- Edit non‑attachment item
- Paperclip always routes