chore(main): release 1.3.0

[github-actions]

🤖 I have created a release beep boop

1.3.0 (2026-08-10)

Features

• api: localize outbound emails per recipient (#30 Phase 3) (f127b29)
• api: preferred language on account (#30) (945bb98)
• api: stable error codes on every user-facing problem (#30) (95f7584)
• client: i18n foundation + localized login + locale serving (#30) (6b23c2b)
• client: localize the admin screens (#30) (5871d37)
• client: localize the app shell/chrome (#30) (d4cf5e8)
• client: localize the auth/entry screens (#30) (cdad576)
• client: localize the Files feature (#30) (943be0c)
• client: localize the public share viewer (#30) (d9ce4fb)
• client: localize the Trash screen (#30) (72b9e40)
• localize field-validation errors via codes (#30 Phase 2) (bc743f2)

Bug Fixes

• api: redirect unprefixed paths to the locale build; keep e2e green (#30) (f4c3623)

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[github-actions]

🤖 Created releases:

• v1.3.0

🌻