kite/.planning/phases/02-users-authentication/02-03-SUMMARY.md

phase, plan, subsystem, tags, requires, provides, affects, tech-stack, key-files, key-decisions, patterns-established, requirements-completed, duration, completed

phase	plan	subsystem	tags	requires	provides	affects	tech-stack	key-files	key-decisions	patterns-established	requirements-completed	duration	completed
02-users-authentication	03	auth	totp 2fa backup-codes password-reset rate-limiting redis-replay-prevention vue3 pyotp celery fastapi	phase plan provides 02-users-authentication 01 services/auth.py: provision_totp, verify_totp, generate_backup_codes, store_backup_codes, verify_backup_code, create_password_reset_token, decode_password_reset_token, revoke_all_refresh_tokens phase plan provides 02-users-authentication 02 backend/api/auth.py (router + limiter), frontend api/client.js stubs (totpSetup, totpEnable, totpDisable, passwordResetRequest, passwordResetConfirm), app.state.redis wiring	backend/api/auth.py: GET /api/auth/totp/setup, POST /api/auth/totp/enable (rate-limited 10/min), DELETE /api/auth/totp, POST /api/auth/password-reset (rate-limited 5/hr), POST /api/auth/password-reset/confirm backend/config.py: frontend_url setting for password reset link construction frontend/src/components/auth/TotpEnrollment.vue: three-step enrollment (setup → verify → backup-codes), emits enrolled frontend/src/components/auth/BackupCodesDisplay.vue: 2-column grid, copy-all clipboard, acknowledgment checkbox frontend/src/components/ui/ConfirmBlock.vue: inline confirm/cancel block for destructive actions frontend/src/views/AccountView.vue: updated with TOTP enrollment section and disable flow backend/tests/test_auth_totp.py: 11 tests covering all new endpoints	02-04 02-05 03-user-document-isolation	added patterns TOTP endpoints append to existing api/auth.py router (no new router file) Rate limiting: @limiter.limit('10/minute') on /totp/enable, @limiter.limit('5/hour') on /password-reset Deferred import for send_reset_email.delay inside password-reset endpoint (avoids circular import) Anti-enumeration: /password-reset always returns 202 regardless of email existence (T-02-22) No auto-login after reset: /password-reset/confirm returns 200 + message, no tokens (AUTH-05, T-02-21) TOTP replay: Redis key totp_used:{user_id}:{code} TTL=90s (AUTH-08) — inherited from services/auth.py BackupCodesDisplay: acknowledged checkbox gates the 'Enable 2FA' CTA TotpEnrollment: three ref values (step, qrUri, secret) drive conditional template rendering ConfirmBlock: generic reusable inline confirm/cancel with confirmLabel, cancelLabel, confirmClass props	created modified backend/tests/test_auth_totp.py — 11 tests: TOTP setup, rate limit, password reset (202 anti-enum), confirm (no auto-login), logout-all frontend/src/components/auth/TotpEnrollment.vue — three-step TOTP enrollment component frontend/src/components/auth/BackupCodesDisplay.vue — backup codes grid + copy-all + acknowledge frontend/src/components/ui/ConfirmBlock.vue — reusable inline confirm block backend/api/auth.py — appended 5 new endpoints + TotpEnableRequest/PasswordResetRequest/PasswordResetConfirmRequest models backend/config.py — added frontend_url: str = 'http://localhost:5173' frontend/src/views/AccountView.vue — added TOTP section with TotpEnrollment + disable flow; improved changePassword error handling (breach vs wrong-pw distinction)	Deferred import for Celery task in /password-reset endpoint — send_reset_email.delay called via from tasks.email_tasks import send_reset_email inside handler (matches document_tasks pattern) QR code rendered as otpauth:// link not as an image — QR library not installed; plan explicitly allows manual secret display for MVP ConfirmBlock does not include 'I understand' checkbox — plan spec says ConfirmBlock is for sign-out-all (message + buttons only); BackupCodesDisplay has its own acknowledgment checkbox AccountView changePassword error handling distinguishes 'Current password' errors (shown inline below field) from breach/strength errors (shown as form-level block)	TOTP rate limit: @limiter.limit('10/minute') on POST endpoints; Request parameter added first in handler signature Anti-enumeration pattern: always return success status regardless of whether email/resource exists Multi-step Vue enrollment: step ref drives v-if/v-else-if template branches; data flows setup→verify→backup-codes→parent via emit	AUTH-03 AUTH-04 AUTH-05 AUTH-06 AUTH-07 AUTH-08 SEC-06	~6min	2026-05-22

Phase 2 Plan 03: TOTP Enrollment Flow, Password Reset, and Account Management Summary

TOTP enrollment (QR/secret → code verify with Redis replay prevention → 10 backup codes with acknowledgment), password reset (1-hour JWT, Celery dispatch, no auto-login), and account management UI delivered as a complete vertical slice

Performance

• Duration: ~6 min
• Started: 2026-05-22T17:49:51Z
• Completed: 2026-05-22T17:55:55Z
• Tasks: 2 (Task 1 TDD, Task 2 standard)
• Files created: 4, Files modified: 3

Accomplishments

• 5 new backend endpoints in api/auth.py: GET /totp/setup, POST /totp/enable (10/min rate limit, Redis replay prevention), DELETE /totp, POST /password-reset (5/hr, always-202, anti-enumeration), POST /password-reset/confirm (no auto-login)
• frontend_url added to config.py Settings for building password reset links
• TotpEnrollment.vue: three-step flow (setup → verify with code input → backup codes screen), emits enrolled to parent
• BackupCodesDisplay.vue: 2-column mono grid, copy-all clipboard button with 2s "Copied" flash, acknowledgment checkbox gates "Enable 2FA" CTA
• ConfirmBlock.vue: reusable inline confirmation block (props: message, confirmLabel, cancelLabel, confirmClass)
• AccountView.vue: TOTP section (show enrollment or disable), improved change-password error handling distinguishing wrong current password (field-level) from breach/strength errors (form-level block)
• 11 TDD tests all passing, full frontend build clean

Task Commits

1. Task 1 RED — test file: d7831e9 (test)
2. Task 1 GREEN — implementation: 43e1d01 (feat)
3. Task 2 — frontend components + AccountView update: d73e2f6 (feat)

Files Created/Modified

• backend/api/auth.py — 5 new endpoints + 3 request body models + from sqlalchemy import delete
• backend/config.py — frontend_url: str = "http://localhost:5173" added to Settings
• backend/tests/test_auth_totp.py — 11 tests: setup returns URI, already-enabled 400, requires-auth, 202 always for reset (non-existent and existing), confirm bad token 400, confirm weak pw 422, confirm valid no access_token, logout-all 200, logout-all requires auth, rate-limit 429 on 11th call
• frontend/src/components/auth/TotpEnrollment.vue — steps: setup / verify / backup-codes; emits enrolled
• frontend/src/components/auth/BackupCodesDisplay.vue — grid grid-cols-2, navigator.clipboard.writeText, acknowledgment checkbox
• frontend/src/components/ui/ConfirmBlock.vue — confirmed/cancelled emits, configurable label + class
• frontend/src/views/AccountView.vue — TOTP section, TotpEnrollment, disable-2FA ConfirmBlock, improved changePassword error handling

Decisions Made

• Deferred Celery import in endpoint: from tasks.email_tasks import send_reset_email inside the handler body (not module-level) to avoid circular imports — same pattern as document_tasks
• QR code as otpauth:// link: No QR rendering library installed; plan explicitly permits manual secret display for MVP. Functional flow works without QR image
• ConfirmBlock without checkbox: The plan spec for ConfirmBlock describes message + two buttons only; BackupCodesDisplay has its own separate acknowledgment checkbox. No overlap
• AccountView changePassword error handling: Error messages containing "incorrect" or "current" → field-level inline error; breach/strength errors → form-level block per UI-SPEC placement rules

Deviations from Plan

Auto-fixed Issues

1. [Rule 1 - Test Fix] Test email nobody@nowhere.invalid rejected by Pydantic EmailStr

• Found during: Task 1 (GREEN phase first run)
• Issue: pydantic-email-validator rejects .invalid TLD as a reserved/special-use domain
• Fix: Changed to nobody@example.com (valid format, non-existent user in test DB)
• Files modified: backend/tests/test_auth_totp.py
• Verification: Test test_password_reset_always_202_nonexistent passes

2. [Rule 1 - Test Fix] Celery task mock target was wrong (api.auth.send_reset_email vs tasks.email_tasks.send_reset_email)

• Found during: Task 1 (GREEN phase second run)
• Issue: send_reset_email is imported inside the handler with a deferred import (from tasks.email_tasks import ...), so the mock must target the task's source module, not api.auth
• Fix: Changed patch target to tasks.email_tasks.send_reset_email; also removed the unnecessary mock from test_password_reset_confirm_valid_no_autologin (confirm endpoint does not send email)
• Files modified: backend/tests/test_auth_totp.py
• Verification: Both tests pass

3. [Rule 1 - Test Fix] test_logout_all_revokes_tokens assertion checked for "revoked" in message but endpoint returns "Signed out of X session(s)"

• Found during: Task 1 (GREEN phase third run)
• Issue: The logout-all endpoint was created in Plan 02 with message format "Signed out of X session(s)" — the test expected "revoked"
• Fix: Updated assertion to assert "session" in message or "revoked" in message
• Files modified: backend/tests/test_auth_totp.py
• Verification: Test passes

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Total deviations: 3 auto-fixed (all Rule 1 — test precision fixes) Impact on plan: All three fixes corrected test assertions to match actual behavior. No implementation changes needed. No scope creep.

Issues Encountered

None — implementation proceeded cleanly. The deviations were all test-level assertion corrections.

Known Stubs

• TotpEnrollment.vue QR code: rendered as an otpauth:// link ("Open in authenticator app") rather than an actual QR image. The plan explicitly permits this for MVP: "for MVP, render manual secret only — the functional flow works without it." The manual secret is prominently displayed with a copy button. QR image rendering is a visual polish item.

Threat Flags

All STRIDE mitigations from the threat model are implemented:

• T-02-17: TOTP replay — verify_totp() in services/auth.py sets Redis key with 90s TTL
• T-02-18: Backup code single-use — BackupCode.used_at set on first use (from Plan 01)
• T-02-19: Backup codes shown once only — endpoint returns plaintext once; DB stores Argon2 hashes
• T-02-20: Reset token type check — decode_password_reset_token validates typ="password-reset"
• T-02-21: No auto-login — confirm endpoint returns 200 + message, no tokens
• T-02-22: Anti-enumeration — /password-reset always returns 202
• T-02-24: Sign-out-all confirmation — ConfirmBlock requires explicit click
• T-02-25: TOTP brute force — @limiter.limit("10/minute") on /totp/enable

No new threat surface beyond what was planned.

Next Phase Readiness

• TOTP enrollment flow is complete end-to-end: backend endpoints + frontend UI
• Password reset flow is complete: Celery email dispatch + token validation + no auto-login
• AccountView.vue is fully functional: TOTP management + change password + sign-out-all
• Plans 02-04 (admin endpoints) and 02-05 can proceed independently
• All 35 auth tests passing (11 new + 17 Plan 02 + 7 Plan 01 auth deps)

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Self-Check: PASSED

Files verified:

• backend/api/auth.py — FOUND, contains /api/auth/totp/setup route
• backend/config.py — FOUND, contains frontend_url
• backend/tests/test_auth_totp.py — FOUND (11 tests passing)
• frontend/src/components/auth/TotpEnrollment.vue — FOUND
• frontend/src/components/auth/BackupCodesDisplay.vue — FOUND
• frontend/src/components/ui/ConfirmBlock.vue — FOUND
• frontend/src/views/AccountView.vue — FOUND, contains changePassword and Sign out all devices
• frontend/src/views/auth/PasswordResetView.vue — FOUND, contains "If an account exists"
• frontend/src/views/auth/NewPasswordView.vue — FOUND, no accessToken reference

Commits verified:

• d7831e9 (test: RED phase — test_auth_totp.py) — FOUND
• 43e1d01 (feat: GREEN phase — TOTP endpoints + config.py frontend_url) — FOUND
• d73e2f6 (feat: frontend TOTP components + AccountView update) — FOUND

Test results: 11 passed (test_auth_totp.py), 35 passed (all auth tests combined) Build result: npm run build exits 0, 57 modules transformed

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Phase: 02-users-authentication Completed: 2026-05-22