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+# Programmer Oversight — Design Spec
+
+**Date:** 2026-09-27 · **Branch:** `feat/programmer-tasks` · **Status:** Draft for review
+
+Adds an oversight layer to the Programmer Tasks module: daily **Day Sheet** approvals with a
+remarks ↔ justification loop, a live **admin Monitor**, a PDF **Accomplishment Report**,
+and a gamified **Mine dashboard**.
+
+## 1. Background
+
+The Programmer Tasks module records programmers' dev work: tasks with a pause-aware timer,
+per-contributor work logs (assignee progress notes + helper-entered minutes), comments, and
+projects. Today:
+
+- The admin cannot see who is working on what right now, or who is helping whom.
+- Nobody reviews or approves programmers' daily work.
+- There is no Accomplishment Report.
+- The "Mine" tab is a flat list of cards.
+
+## 2. Goals
+
+1. Admin sees each programmer's live state (working / paused / idle / away), current task,
+   today's time, and help given/received.
+2. Each programmer's work is reviewed per day: approve, or disapprove with remarks; the
+   programmer justifies (and may append corrections) until approved.
+3. Programmers generate their own Accomplishment Report (PDF, date-filtered); the admin
+   generates one for any programmer.
+4. The Mine tab becomes a motivating dashboard with stats, a streak, badges, and tasks
+   separated into In progress / Paused / Not started / Completed / Cancelled.
+
+### Non-goals
+
+- Live "help sessions" (help is derived from work logs after the fact).
+- XP/levels and team leaderboards.
+- Editing or deleting existing work-log entries (they stay append-only).
+- Migrating the existing DTR / task PDFs to the new shared PDF helpers.
+
+## 3. Decisions
+
+| Topic | Decision |
+|---|---|
+| Approval unit | **Day Sheet** — one per programmer per day; admin can **flag task rows** in it |
+| Submission | **Auto-submit at day end**, plus **manual early submit** |
+| Same-day approval | **Allowed**; later work that day reopens the sheet as "amended after approval" |
+| On disapprove | Programmer **justifies** and **may append corrective entries**; originals are immutable |
+| Late entries | Back-dated work logs allowed on **pending or disapproved** days, never on approved days; no backfilling days that have no sheet |
+| Helping | **Derived from work logs** (helper = work-log author ≠ task assignee) |
+| Report scope | **Toggle when generating**: approved days only (default) or include unapproved days (marked) |
+| Report layout | **By day**: Date · Task/Project · Accomplishment · Time, then summary and signatures |
+| Gamification | **Stat tiles + streak + badges** |
+| Notifications | **In-app + push** |
+| Monitor states | Working / Paused / Idle / **On leave** / **Pass slip** |
+| Tabs | Programmer: **Mine · All · Day Sheets** — Admin: **Monitor · Approvals · Mine · All** |
+| Core approach | Day-sheet table + append-only review thread + SECURITY DEFINER RPCs + pg_cron auto-submit + approval snapshot |
+
+**"Admin" means `profiles.role = 'admin'` only.** The existing `isAdminProvider`
+(`lib/providers/profile_provider.dart:305`) also returns true for programmers, and the
+module's RLS treats both roles alike. All approval and monitor gating uses a new
+`isStrictAdminProvider` on the client and `role = 'admin'` in SQL.
+
+## 4. Existing code this builds on
+
+| Fact | Where |
+|---|---|
+| Task status is `queued \| in_progress \| completed \| cancelled`. **Paused** = `in_progress` whose latest lifecycle activity-log event is `paused`. **Not started** = `queued`. | `lib/models/programmer_task.model.dart:39-47` |
+| Work logs are append-only; the day is known only from `created_at`; assignee rows have `minutes = null`, helper rows have minutes. | `supabase/migrations/20260927140000_add_programmer_projects_worklogs_comments.sql:90-111` |
+| Duration core `computeEffectiveDuration` | `lib/utils/task_duration.dart:38-75` |
+| Ledger `computeTaskLedger` credits **all** clock time to the *current* assignee — the per-day split must not do this. | `lib/utils/programmer_task_ledger.dart:46-78` |
+| `ReportDateFilter` is hard-wired to `reportDateRangeProvider`; `ReportDateRange.end` is exclusive. | `lib/screens/reports/report_date_filter.dart`, `lib/providers/reports_provider.dart:13-51` |
+| Per-person PDF with letterhead + preview dialog (period label is off by one day at :211). | `lib/screens/attendance/dtr_pdf.dart` |
+| DTO + pure PDF builder pattern | `lib/screens/attendance/work_log_pdf.dart` |
+| Notification `type` is free text; render + tap switch; push via `send_fcm`. | `lib/screens/notifications/notifications_screen.dart:63-140`, `lib/services/notification_bridge.dart:97,152`, `lib/providers/notifications_provider.dart:376` |
+| Scheduled push: pg_cron → `scheduled_notifications` (`schedule_id` nullable) → edge function `notify_type` switch. | `supabase/functions/process_scheduled_notifications/index.ts` |
+| SECURITY DEFINER RPC that writes status + notifications atomically | `respond_shift_swap`, `supabase/migrations/20260322190000_pm_oncall_companion_swap.sql` |
+| Per-user "on leave / pass slip today" logic | `lib/screens/dashboard/dashboard_screen.dart:371-433` |
+
+## 5. Day Sheets
+
+### 5.1 What a Day Sheet contains
+
+One **row per task** the programmer worked on that day:
+
+- task title, category, project;
+- **time that day**:
+  - *Assignee rows*: timer intervals (started/resumed → paused/completed/cancelled)
+    clipped to Manila day boundaries, credited to **whoever was assignee at that moment**
+    (walk `created` / `assigned` / `reassigned` events). A later reassignment never changes
+    a past day. `adjustment` events count against the day they were created.
+  - *Helper rows*: the helper's entered minutes, labelled "Helped <assignee>".
+- **notes**: that day's work-log entries for the task.
+
+The admin flags **rows** when disapproving.
+
+### 5.2 Schema
+
+New migration `supabase/migrations/20260927150000_add_programmer_day_sheets.sql`.
+
+**`programmer_day_sheets`**
+
+| Column | Type | Notes |
+|---|---|---|
+| `id` | uuid pk | |
+| `programmer_id` | uuid → profiles | |
+| `work_date` | date | Manila calendar day |
+| `status` | text | check `draft \| pending \| disapproved \| approved`, default `draft` |
+| `submitted_at` | timestamptz | |
+| `auto_submitted` | bool | default false |
+| `reviewed_by` | uuid → profiles | last admin to approve/disapprove |
+| `reviewed_at` | timestamptz | |
+| `resubmissions` | int | default 0; incremented by justify |
+| `approved_snapshot` | jsonb | rows as approved (see 5.5) |
+| `created_at`, `updated_at` | timestamptz | |
+
+Unique `(programmer_id, work_date)`.
+
+**`programmer_day_sheet_events`** — append-only review thread
+
+| Column | Type | Notes |
+|---|---|---|
+| `id` | uuid pk | |
+| `sheet_id` | uuid → sheets, on delete cascade | |
+| `actor_id` | uuid null | null = system |
+| `kind` | text | check `submitted \| auto_submitted \| disapproved \| justified \| approved \| amended` |
+| `body` | text | remarks / justification; check non-empty for `disapproved` and `justified` |
+| `flagged_task_ids` | uuid[] | default `'{}'` |
+| `created_at` | timestamptz | |
+
+**`programmer_task_work_logs.work_date`** — `date not null default (now() at time zone
+'Asia/Manila')::date`. Existing rows are backfilled from `created_at`. A BEFORE INSERT
+guard trigger allows:
+
+- `work_date` = today (Manila); or
+- a past `work_date` only if the author's sheet for that date is `pending` or
+  `disapproved`.
+
+Anything else raises an error.
+
+**`notifications.day_sheet_id`** — `uuid null references programmer_day_sheets on delete
+cascade`.
+
+**RLS:** sheets and events are readable by the owner and by `role = 'admin'`. There are no
+client INSERT/UPDATE/DELETE policies; every write goes through the RPCs or triggers below.
+Both tables are added to the `supabase_realtime` publication.
+
+### 5.3 Status transitions
+
+Each transition is a SECURITY DEFINER RPC with `set search_path = public`, explicit
+`auth.uid()`, role, and current-status checks. Each one atomically updates the sheet,
+inserts a thread event, and inserts notification rows, then returns the recipient user ids
+so the client can call `send_fcm`. A stale status raises `already_reviewed`.
+
+| RPC | Who | From → To | Rule |
+|---|---|---|---|
+| `submit_day_sheet(p_date)` | owner | draft → pending | Any time, including early. Upserts the row. |
+| `disapprove_day_sheet(p_sheet, p_remarks, p_flagged_task_ids)` | admin | pending → disapproved | Remarks required. |
+| `justify_day_sheet(p_sheet, p_body)` | owner | disapproved → pending | Justification required; `resubmissions += 1`. |
+| `approve_day_sheets(p_items)` — `[{sheet_id, snapshot}]` | admin | pending or disapproved → approved | Same-day allowed. Bulk-capable. Stores the snapshot. |
+
+```
+ draft ──submit / auto──▶ pending ──approve──▶ approved
+                           │   ▲                 │
+                  disapprove   justify           │ new work on the same day
+                           ▼   │                 │ (system "amended")
+                        disapproved ◀────────────┘ (back to pending)
+```
+
+### 5.4 Automatic behaviour
+
+- **Draft creation.** Triggers upsert a `draft` sheet when a work log is inserted (for the
+  author, on `work_date`) and when a lifecycle activity-log event is inserted (for the
+  task's assignee, on the event's Manila date). Only for `role = 'programmer'`.
+- **Amended after approval.** A work log or lifecycle event landing on an **approved
+  sheet for today** sets it back to `pending` and adds a system `amended` event. This is not
+  counted as a disapproval. The Approve button warns the admin when that programmer has a
+  timer running.
+- **Nightly auto-submit** — `auto_submit_day_sheets()` via pg_cron at 00:05 Manila:
+  1. For assignees of tasks still running, upsert yesterday's sheet (reopening it as
+     `amended` if it was approved).
+  2. Flip every `draft` sheet with `work_date < today` to `pending`
+     (`auto_submitted = true`, `auto_submitted` event).
+  3. If anything is pending, insert one `scheduled_notifications` row per admin with
+     `notify_type = 'day_sheet_digest'`, scheduled for 08:00 Manila.
+
+  The cron registration uses the same `DO $$ … EXCEPTION` guard as existing cron
+  migrations.
+
+### 5.5 Approval snapshot
+
+On approval the admin client sends the rows it displayed:
+
+```json
+{
+  "v": 1,
+  "total_seconds": 27900,
+  "rows": [
+    {
+      "task_id": "…", "title": "…", "category": "Bug Fix", "project_name": "HIS",
+      "kind": "assignee", "helped_name": null,
+      "seconds": 11400, "notes": ["Fixed session timeout…"]
+    }
+  ]
+}
+```
+
+Approved days are thereby fixed records: the report and stats read the snapshot, so later
+renames or reassignments do not change what was approved.
+
+## 6. Approval UX
+
+### 6.1 Tabs
+
+`programmer_tasks_list_screen.dart` shows tabs by role:
+
+- **Programmer:** Mine · All · Day Sheets
+- **Admin:** Monitor · Approvals · Mine · All
+
+### 6.2 Day Sheets tab (programmer)
+
+- **Today card** — today's rows (live), total time, Draft/Submitted chip, **Submit day**.
+- **Needs your attention** — disapproved sheets, pinned, warning style.
+- **History** — sheets by date with status filter chips (`AppStatusSummaryRow`).
+- App bar: **Accomplishment Report**.
+
+### 6.3 Sheet detail — `/programmer-tasks/day-sheets/:id` (both roles)
+
+- Header: date, programmer, status, total time, "Round N" when resubmitted.
+- Rows table: task · time · notes. Flagged rows are highlighted (`AppStatusColors`
+  warning + flag icon).
+- Thread timeline, styled like `widgets/activity_timeline.dart`.
+- **Programmer, when disapproved:**
+  - **Add correction** — the existing work-log dialog with `workDate` preset to that day,
+    flagged tasks listed first.
+  - Justification field (cannot be empty; modeled on the checkout-justification dialog,
+    `attendance_screen.dart:1462-1510`).
+  - **Resubmit**.
+- **Admin, when pending or disapproved:**
+  - Row checkboxes for flagging.
+  - **Disapprove** — dialog lists the flagged rows; remarks required.
+  - **Approve** — warns if a timer is running. The admin client builds the snapshot.
+
+### 6.4 Approvals tab (admin)
+
+- Summary chips: Pending · Awaiting justification · Approved.
+- Programmer filter and the shared date filter.
+- Cards grouped by date: programmer, total time, task count, Early/Auto badge, Round N.
+- Multi-select → **Approve selected**. Disapproval stays per sheet because it needs remarks.
+
+## 7. Admin Monitor
+
+- **Summary row:** Working · Paused · Idle · On leave/Pass slip · Sheets pending.
+- **One card per programmer** (grid: 1 column on mobile, 2–3 on desktop):
+  - State pill: **Working** (success) / **Paused** (warning) / **Idle** (neutral) /
+    **On leave** or **Pass slip** (info; overrides the others).
+  - Current task: title, category/project `TechChip`s, live "running 1h 12m today".
+  - Today's total; in-progress / paused / not-started counts; today's sheet status.
+  - Help chips: "Helped → Ben · task · 45m", "Helped by ← Ana · 30m".
+- **Drill-down** (tap a card): `ProgrammerDashboard(userId, readOnly: true)`, their recent
+  Day Sheets, and **Generate Accomplishment Report** with the programmer preselected.
+- **Who's helping whom** panel: helper → assignee · task · minutes · time, with a day
+  stepper (defaults to today). The working/paused state is always live.
+
+**Data**
+
+- New `programmerRunStatesProvider`: realtime stream of lifecycle activity logs for all
+  `in_progress` task ids → latest lifecycle event per task → Working vs Paused. It also
+  replaces the Mine tab's `myRunningProgrammerTaskIdProvider` inference, which currently
+  marks every in-progress task as paused when offline.
+- Today's time: the per-day split (5.1).
+- Help: work logs with `work_date = day` whose author ≠ task assignee.
+- Leave / pass slip: extract the per-user "today" logic from
+  `dashboard_screen.dart:371-433` into `lib/utils/staff_presence.dart`, used by both the
+  dashboard and the Monitor.
+- Admin-only. Programmers keep the existing All tab and get no live view of teammates.
+
+## 8. Mine dashboard
+
+A single widget, `ProgrammerDashboard(userId, {readOnly})`, used for the Mine tab and for
+the Monitor drill-down.
+
+1. **Now working hero** — the running task with a live timer (today + total) and
+   Pause/Complete. If nothing is running: "Nothing running" and **Start** on the top
+   not-started task (via `startProgrammerTaskWithPausePrompt`).
+2. **Stat tiles** (`AppMetricCard`):
+   - **Today's focus** — ring against an 8h target (pattern:
+     `reports/widgets/conversion_rate_card.dart:43-55`).
+   - **Completed this week**, with change vs last week.
+   - **Streak** — consecutive weekdays whose sheet is pending or approved. Weekends and
+     approved-leave days are skipped (neither count nor break). A disapproved day breaks
+     the streak until justified. Today counts once submitted. Shows best streak too.
+   - **First-pass approval rate** (last 30 days) — approved sheets with no `disapproved`
+     event ÷ reviewed sheets.
+   - **Help given** this month.
+   - Streak and approval rate are hidden for admins (admins have no sheets).
+3. **Badges** — computed from data each time (no table). Locked badges are greyed out with
+   progress (e.g. 7/10).
+
+   | Badge | Unlocks at |
+   |---|---|
+   | First Finish | first completed task |
+   | Finisher | 10 / 50 / 100 completed tasks |
+   | Bug Squasher | 10 completed Bug Fix tasks |
+   | Deep Work | 100 / 500 approved hours |
+   | On a Roll | best streak 5 / 10 / 20 |
+   | Team Player | 10h help given |
+   | Clean Week | a Mon–Fri week with every day approved first time |
+
+4. **Task sections** (`AppSectionHeader` + count): In progress · Paused · Not started ·
+   Completed (collapsed; last 10 + Show all) · Cancelled (collapsed). The list's private
+   `_TaskCard` is extracted to `widgets/programmer_task_card.dart`.
+
+**Data:** hour-based stats and badges sum approved snapshots; "today" figures come from the
+live per-day split; counts come from `programmerTasksProvider` filtered to the user.
+Calculations live in pure functions (`computeProgrammerStats`, `computeBadges`).
+
+## 9. Accomplishment Report (PDF)
+
+**Entry points:** Day Sheets tab app bar (programmer, self); Approvals tab app bar and
+Monitor drill-down (admin).
+
+**Generate dialog**
+
+- Programmer picker — admin only; searchable single-select of `role = 'programmer'`
+  from `profilesProvider`.
+- Date filter — `ReportDateFilter.controlled`, default "This Month".
+- Toggle — "Include unapproved days (marked)", off by default.
+- **Generate** → preview dialog with Print and Download.
+
+**Date filter reuse:** add `ReportDateFilter.controlled({value, onChanged})` to
+`lib/screens/reports/report_date_filter.dart`. `_DateFilterDialog` returns the chosen
+`ReportDateRange` instead of writing the provider. The default constructor keeps binding
+`reportDateRangeProvider`, so the Reports screen is unchanged.
+
+**Layout** (A4 MultiPage, Roboto, CRMC letterhead):
+
+1. Info box — name, position, period (**inclusive** end date: `end − 1 day`).
+2. By-day table — Date | Task/Project | Accomplishment | Time.
+   - Accomplishment = that day's work-log notes (Quill delta → plain text); "(no notes)"
+     when a row has time but no notes.
+   - Help rows read "Helped Ana — <task>".
+   - When unapproved days are included, they carry a Pending/Disapproved tag.
+3. Footnote (approved-only mode) — "N days in the period are not included (x pending,
+   y disapproved)".
+4. Summary — days reported, total time, tasks completed in the period, help given, time by
+   category.
+5. Signatures — "Prepared by" the programmer; "Approved by" the reviewing admin's name if
+   one admin approved every included day, otherwise a blank line.
+
+**Data:** approved days come from `approved_snapshot`; unapproved days (when included) are
+computed live. `buildAccomplishmentReportData(...)` (pure) produces a DTO;
+`buildAccomplishmentReportPdf(dto)` only draws.
+
+**Shared helpers (used by new code only):** `lib/utils/pdf/pdf_letterhead.dart` (fonts,
+logo, letterhead) and `lib/widgets/pdf_preview_dialog.dart` (pdfrx preview,
+`Printing.layoutPdf`, `Printing.sharePdf`, modeled on `_DtrPdfDialog`).
+
+## 10. Notifications
+
+| Type | Recipient | Trigger |
+|---|---|---|
+| `day_sheet_submitted` | all admins | programmer submits early |
+| `day_sheet_digest` | each admin, 08:00 | nightly auto-submit left sheets pending; opens Approvals |
+| `day_sheet_disapproved` | programmer | admin disapproves (includes remarks) |
+| `day_sheet_justified` | the reviewing admin | programmer justifies and resubmits |
+| `day_sheet_approved` | programmer | admin approves (single or bulk) |
+
+RPCs insert the notification rows and return recipients; the client sends push through
+`NotificationsController.sendPush`. The digest goes through `scheduled_notifications` with
+a new case in `process_scheduled_notifications`. New render cases and tap routing go into
+`notifications_screen.dart` and `notification_bridge.dart`, and `day_sheet_id` is added to
+`notification_item.model.dart`.
+
+## 11. Error handling
+
+- **Stale status** (e.g. two admins act at once) → "This sheet was already reviewed" and
+  the view refreshes.
+- **Empty remarks/justification** → blocked in the dialog and by the DB check.
+- **Disallowed back-dated entry** → the guard trigger's error is shown as a clear message.
+- **Push failure** → non-blocking; logged, as in existing flows.
+- **Offline** → Day Sheets are online-only (like work logs); actions are disabled with a
+  banner.
+
+## 12. Files
+
+New (each under 500 lines):
+
+- `supabase/migrations/20260927150000_add_programmer_day_sheets.sql`
+- `lib/models/programmer_day_sheet.model.dart`,
+  `lib/models/programmer_day_sheet_event.model.dart` (plain online models)
+- `lib/providers/programmer_day_sheets_provider.dart` (streams, RPC controller, push)
+- `lib/providers/programmer_run_states_provider.dart`
+- `lib/utils/programmer_daily_time.dart` (per-day split with assignee attribution)
+- `lib/utils/programmer_stats.dart` (stats, streak, badges)
+- `lib/utils/staff_presence.dart`
+- `lib/utils/pdf/pdf_letterhead.dart`, `lib/widgets/pdf_preview_dialog.dart`
+- `lib/screens/programmer_tasks/dashboard/` — dashboard, hero, stat tiles, badges, sections
+- `lib/screens/programmer_tasks/monitor/` — monitor tab, programmer card, help panel
+- `lib/screens/programmer_tasks/day_sheets/` — Day Sheets tab, Approvals tab, detail
+  screen, disapprove/justify dialogs
+- `lib/screens/programmer_tasks/report/` — generate dialog, report data, report PDF
+- `lib/screens/programmer_tasks/widgets/programmer_task_card.dart`
+
+Modified:
+
+- `lib/screens/programmer_tasks/programmer_tasks_list_screen.dart` — role tabs, card extract
+- `lib/models/programmer_task_work_log.model.dart`,
+  `lib/providers/programmer_task_work_logs_provider.dart`,
+  `lib/screens/programmer_tasks/widgets/work_log_section.dart` — `workDate`
+- `lib/screens/reports/report_date_filter.dart` — controlled constructor
+- `lib/providers/profile_provider.dart` — `isStrictAdminProvider`
+- `lib/routing/app_router.dart` — day-sheet detail route
+- `lib/screens/notifications/notifications_screen.dart`,
+  `lib/services/notification_bridge.dart`, `lib/models/notification_item.model.dart`
+- `supabase/functions/process_scheduled_notifications/index.ts` — digest case
+- `lib/screens/dashboard/dashboard_screen.dart` — use `staff_presence.dart`
+
+## 13. Delivery slices
+
+Each slice ships independently on `feat/programmer-tasks`.
+
+1. **Mine dashboard** — run-state provider, per-day split util, dashboard. No schema
+   change; fixes the offline "everything paused" bug. Approval-based stats appear once
+   slice 3 lands.
+2. **Admin Monitor** — plus the `staff_presence.dart` extraction.
+3. **Day Sheets** — migration, RPCs, cron, Day Sheets/Approvals tabs, detail screen,
+   notifications. **The user applies the migration and redeploys
+   `process_scheduled_notifications`** (the Supabase migration tool is blocked in this
+   environment).
+4. **Accomplishment Report** — date-filter refactor, PDF helpers, report.
+
+## 14. Testing and verification
+
+- `flutter analyze lib` clean; `flutter test` passes apart from the three known,
+  unrelated failures (theme_overhaul, profile_screen, user_management).
+- **Unit (pure Dart, TDD):** per-day split (midnight crossing, reassignment attribution,
+  pauses, adjustments); stats and streak (weekends, leave, disapproved days); badges;
+  report data (approved-only vs marked, snapshot vs live, footnote, inclusive period).
+- **Controller (mock-first, pattern of `test/programmer_tasks_controller_test.dart`):**
+  RPC calls, push invocation, stale-status error mapping.
+- **Widget:** Disapprove dialog requires remarks; dashboard sections; tabs by role.
+- **SQL checklist** after the migration is applied (rolled-back transactions with
+  `request.jwt.claims` set per role): every transition allowed/denied by role and status;
+  back-dated work-log guard; amended-after-approval; `auto_submit_day_sheets()` called
+  directly; `get_advisors` security check.
+- **End-to-end** via the QA harness (programmer, then admin; light and dark): log work →
+  submit early → admin flags and disapproves → programmer adds a correction and justifies
+  → admin approves → both generate the PDF (approved-only and marked) → Monitor shows
+  Working/Paused/On leave and help edges → notifications render and route.
+- `flutter build web` succeeds.