ADR-0122: English and French everywhere

• Status: accepted
• Date: 2026-10-30
• French version: ../ADR-0122-i18n.md

Context

Repository rule.

Decision

Error messages (locales/en.json, locales/fr.json per domain), screens (portal/src/locales/en.ts, fr.ts), docs (docs/fr, docs/en); error envelope with message_i18n.

Consequences

Parity tests.

Evidence

• RULES.md (section 1, point 1)
• services/control-plane/src/eai/i18n.py
• services/control-plane/tests/test_core_i18n_parity.py
• portal/tests/i18n.test.ts