---
phase: 07-multilanguage
plan: "04"
subsystem: portal-i18n
tags:
  - i18n
  - verification
  - multilanguage
  - next-intl
  - portal

requires:
  - phase: 07-multilanguage
    provides: complete multilanguage portal implementation (07-01 through 07-03)
provides:
  - human-verified multilanguage support across all portal pages
  - confirmed language switcher works pre-auth and post-auth
  - confirmed AI Employee language-response behavior validated
  - confirmed language preference persistence across sessions
affects: []

tech-stack:
  added: []
  patterns:
    - Human verification as final gate for translation quality (automated builds cannot verify visual/linguistic correctness)

key-files:
  created: []
  modified: []

key-decisions:
  - "No code changes required — all 6 I18N requirements met by implementation in plans 07-01 through 07-03"

patterns-established:
  - "Verification-only plans produce SUMMARY with no task commits — metadata commit captures the checkpoint approval"

requirements-completed:
  - I18N-01
  - I18N-02
  - I18N-03
  - I18N-04
  - I18N-05
  - I18N-06

duration: verification
completed: 2026-03-25
tasks_completed: 1
files_modified: 0
---

# Phase 7 Plan 4: Multilanguage Human Verification Summary

**All 6 I18N requirements verified by human testing — portal renders correctly in EN/ES/PT, language switcher persists across sessions, and AI Employees respond in the user's selected language.**

## Performance

- **Duration:** verification (human checkpoint)
- **Started:** 2026-03-25
- **Completed:** 2026-03-25
- **Tasks:** 1 (human-verify checkpoint)
- **Files modified:** 0

## Accomplishments

- Human verified portal renders correctly in English, Spanish, and Portuguese (I18N-01)
- Language switcher confirmed working on login page (pre-auth) and sidebar (post-auth) (I18N-02)
- Language preference confirmed persisting across sessions via DB + JWT (I18N-02)
- AI Employee language-response behavior confirmed — agent replies in the user's selected language (I18N-03)
- Agent templates confirmed displaying translated names and descriptions (I18N-04, I18N-05)
- Error messages and validation text confirmed localized (I18N-05)
- messages/en.json, messages/es.json, messages/pt.json structure confirmed extensible — adding a 4th language requires only a new JSON file (I18N-06)

## Task Commits

This plan contained a single human-verify checkpoint. No code changes were made.

1. **Task 1: Verify complete multilanguage implementation** - human-verify checkpoint (approved)

**Plan metadata:** (this commit)

## Files Created/Modified

None — verification-only plan.

## Decisions Made

None - all implementation was completed in plans 07-01 through 07-03. This plan confirmed correctness through human review.

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

Phase 7 (multilanguage) is complete. All I18N requirements (I18N-01 through I18N-06) are verified and met.

The portal supports English, Spanish, and Portuguese with:
- Cookie-based locale (no URL routing), persisted to DB and JWT
- Language switcher on login page and in sidebar
- Browser locale auto-detection on first visit
- AI Employee language-response injection via system prompt
- Locale-aware template API calls

No blockers. Project milestone v1.0 is fully complete across all 7 phases.

## Self-Check: PASSED

- SUMMARY.md created and present on disk
- All I18N requirements already marked complete in REQUIREMENTS.md
- ROADMAP.md updated: phase 7 shows 4/4 plans complete, status Complete
- STATE.md updated: progress 29/29 plans, session recorded

---
*Phase: 07-multilanguage*
*Completed: 2026-03-25*