* feat(ios): add Russian locale
Add Russian translations to Localizable.xcstrings for all 591 catalog
entries (reusing matching Android translations and translating the rest);
zh-Hans and format placeholders are preserved.
* fix(ios): make Russian selectable and use correct plural forms
- add AppLanguage.russian ("ru"), its display name, the AppleLanguages
override, and register ru in the Xcode project's knownRegions so the
language picker can actually select Russian
- add Russian one/few/many/other plural variations for %lld sessions,
%lld attachments and %@, %lld sessions
- use count-agnostic phrasing for the other dynamic counts (tools, edits,
lines, chars, findings, notes, queued messages, questions, ...)
- correct Input/Output to Ввод/Вывод
- cover the new language case in ThemePrefsTests
* fix(ios): use Russian plural forms for the remaining count labels
* fix(ios): pass the step count to the plural localization
* fix(ios): pass tool counts to the plural localization
* fix(ios): keep the singular English tool-group labels
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Co-authored-by: mrudy <mrudy@local>
Expose the public privacy policy from pairing and Settings, with a Simplified Chinese label. Document relay metadata, rate-limit state, operational logs, and deletion boundaries without inventing a retention period.
Validation: iOS Release simulator build, link UI checks, docs build, and staged diff checks passed. Full typecheck is blocked by existing Web assistant-ui export errors; the full test command stops at one unrelated piEventConverter CLI failure (2609 passed, 2 skipped).
