---
phase: 07.3-security-es256-algorithm-upgrade-inserted
plan: "03"
subsystem: backend/auth + frontend/auth
tags:
  - security
  - jwt
  - remember-me
  - session-lifetime
  - frontend
dependency_graph:
  requires:
    - 07.3-02
  provides:
    - remember_me param in create_refresh_token (16h default / 30d opt-in)
    - Conditional cookie Max-Age in _set_refresh_cookie
    - "Stay signed in for 30 days" checkbox in LoginView.vue
    - All 9 Phase 7.3 tests PASSED (RM-01, RM-02, RM-03 promoted)
  affects:
    - backend/services/auth.py
    - backend/api/auth.py
    - backend/tests/test_auth_es256.py
    - frontend/src/views/auth/LoginView.vue
    - frontend/src/stores/auth.js
tech_stack:
  added: []
  patterns:
    - "remember_me=False default param threading: LoginView → store → api → LoginRequest → services"
    - "Conditional TTL: timedelta(hours=16) default, timedelta(days=30) when remember_me=True"
    - "Conditional Max-Age: 57600 default, 2592000 when remember_me=True"
key_files:
  created: []
  modified:
    - path: backend/services/auth.py
      note: "create_refresh_token gains remember_me: bool = False; selects 16h or 30d TTL"
    - path: backend/api/auth.py
      note: "LoginRequest.remember_me bool field; _set_refresh_cookie remember_me param; login handler threads remember_me"
    - path: backend/tests/test_auth_es256.py
      note: "RM-01, RM-02, RM-03 promoted from xfail to passing — all 9 tests now PASSED"
    - path: frontend/src/views/auth/LoginView.vue
      note: "rememberMe ref(false) + checkbox 'Stay signed in for 30 days'; threaded through all 3 submit handlers"
    - path: frontend/src/stores/auth.js
      note: "login() forwards options.rememberMe as remember_me in api.login body"
decisions:
  - "rotate_refresh_token intentionally NOT updated — rotated sessions revert to 16h default (per Pitfall 4 in RESEARCH.md; simpler path chosen)"
  - "api/client.js unchanged — already forwards full body verbatim, no field stripping"
  - "Checkbox unchecked by default — explicit opt-in for extended session, not opt-out"
metrics:
  duration: "~20 minutes"
  completed: "2026-06-06"
  tasks_completed: 2
  files_modified: 5
human_checkpoint: PASSED
---

# Phase 07.3 Plan 03: Remember-Me Feature — TTL Split + Cookie Max-Age + Frontend Checkbox Summary

Shipped "Stay signed in for 30 days" opt-in: backend TTL split (16h default / 30d opt-in), conditional cookie Max-Age, and LoginView checkbox with full threading from UI through store, API client, LoginRequest, and service layer. All 9 Phase 7.3 tests now PASSED.

---

## Tasks Completed

| Task | Name | Commit | Files |
|------|------|--------|-------|
| 1 | Backend remember_me — TTL split + cookie Max-Age + 3 promoted tests | 9cc11b5 | backend/services/auth.py, backend/api/auth.py, backend/tests/test_auth_es256.py |
| 2 | Frontend remember_me — checkbox + ref threading + store pass-through | 21e5d27 | frontend/src/views/auth/LoginView.vue, frontend/src/stores/auth.js |

---

## Grep Gate Results (Acceptance Criteria Verified)

| Gate | Expected | Actual | Status |
|------|----------|--------|--------|
| `remember_me` in services/auth.py | >= 3 | 4 | PASS |
| `remember_me` in api/auth.py | >= 5 | 7 | PASS |
| `Max-Age` / `max_age` in api/auth.py | >= 2 | 4 | PASS |
| `Stay signed in for 30 days` in LoginView.vue | 1 | 1 | PASS |
| `remember_me` in stores/auth.js | >= 1 | 1 | PASS |

---

## Promoted Tests (xfail → PASSED)

| Test | Requirement | Before | After |
|------|-------------|--------|-------|
| test_default_ttl_16_hours | RM-01 | XFAIL (strict) | PASSED |
| test_remember_me_ttl_30_days | RM-02 | XFAIL (strict) | PASSED |
| test_remember_me_cookie_max_age | RM-03 | XFAIL (strict) | PASSED |

**Net suite delta:** `+3 PASSED`. All 9 Phase 7.3 tests now PASSED. Zero XFAILED remain.

---

## Must-Haves Verified

| Truth | Status |
|-------|--------|
| Login without remember_me → TTL = 16 hours | PASS (RM-01) |
| Login with remember_me=True → TTL = 30 days | PASS (RM-02) |
| Login with remember_me=True → cookie Max-Age = 2592000 | PASS (RM-03) |
| Login without remember_me → cookie Max-Age = 57600 | PASS (RM-03, default branch) |
| LoginView.vue shows "Stay signed in for 30 days" checkbox, unchecked by default | PASS (human checkpoint) |
| State flows: LoginView ref → store → api body → LoginRequest → create_refresh_token | PASS (grep + human) |

---

## Deviations from Plan

None. All tasks completed as specified. Intended non-updates (rotate_refresh_token, api/client.js) confirmed as correct.

---

## Human Checkpoint: PASSED

User confirmed:
- "Stay signed in for 30 days" checkbox visible on login page
- Cookie Max-Age verified in DevTools → Network → POST /api/auth/login → Response Headers → set-cookie

---

## Phase 7.3 Complete

All 3 plans shipped:
- **Plan 01 (Wave 0):** 9 xfail TDD stubs scaffolded
- **Plan 02 (Wave 1):** ES256 JWT signing at all 4 sites + startup rotation hook + operator wiring
- **Plan 03 (Wave 2):** remember_me TTL split + cookie Max-Age + frontend checkbox

Phase outcome: ES256 asymmetric JWT signing live; default session 16h; opt-in 30-day sessions; startup bulk-revocation on algorithm change; all 9 ES256/remember-me tests green.