* feat(runtime): honor the web UI language in replies and DeerMem updates
Carry Settings > Appearance > Language as request-only run data: the
Gateway validates context.locale against a finite allowlist, the lead
agent prefers it for replies, and bundled DeerMem writes new facts and
summary prose in it. Explicit user language requests still take
precedence; checkpoint configurable, static prompts, and memory backend
APIs are unchanged.
Refs #7287
Co-Authored-By: Claude <noreply@anthropic.com>
* fix(runtime): guard language context and pin locale maps
* test(runtime): pin UI locales across frontend and Gateway
Add the shared locale fixture and document the intentional language fallback for internal runs. Clarify live-locale precedence in the run context contract.
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Co-authored-by: Claude <noreply@anthropic.com>