chore(i18n): fill missing vi, tr, zh-Hans translations to 100%

[datlechin]

Summary

Fills 297 missing strings × 3 locales (vi, tr, zh-Hans). Brings the Localizable.xcstrings catalog from ~83% to 100% completion across the three non-English locales.

Most missing strings came from the recent External API / MCP integration (#925) and the query layer refactor (#956). Three pure-formatter strings (:%@, %@:%lld, %1$@, %2$@) are marked shouldTranslate: false instead of translated, since they have no translatable text.

Coverage

Locale	Before	After
vi	~83%	100%
tr	~83%	100%
zh-Hans	~83%	100%

Translation rules followed

• All placeholders preserved verbatim (%@, %d, %lld, %1$@, %2$@, \n).
• Technical terms kept in English: PostgreSQL/MySQL/MongoDB/etc. driver names, SQL keywords, SSH/TLS/SSL/JSON/CSV/MCP/UUID/JWT, product names (Raycast, Cursor, Claude Desktop, GitHub, TablePro), file extensions, keyboard shortcuts.
• Tone: developer-product, terse, matching existing translation voice for each locale.
• Punctuation: locale-appropriate (full-width for zh-Hans body text, Western for placeholders and code; vi/tr use Western).

Test plan

• App launches in each locale with no broken layout (long Vietnamese strings, Turkish word order, Chinese full-width punctuation).
• Settings > Integrations / Activity Log strings render correctly (most new strings live here).
• Pairing approval sheet, token revoke confirmation, External Access section all read naturally.
• No string-format crashes (placeholder count matches between source and translations).

Review priorities

• Vietnamese: native speakers verifiable. Nothing flagged for review.
• Turkish: agent kept proper-noun apostrophe suffixes (TablePro'ya, iCloud'a). Used Turkish title case for buttons. One small note: "Don't Sort" rendered as "Sıralama" (relies on context); review if explicit "do not sort" wording is needed.
• Simplified Chinese: standard JetBrains/VS Code-style Chinese tech UI conventions. "Token" rendered as "令牌". "intent" in Unsupported intent: %@ kept in English (likely a programmatic identifier).

[chatgpt-codex-connector]

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[chatgpt-codex-connector]

Preserve argument mapping in Turkish access error text

This translation reorders the sentence to put the permission phrase first, but it uses unnumbered placeholders, so runtime substitution follows source order (token, permission, resource) and swaps the first two values in the rendered Turkish message. When token and permission differ, users see incorrect details in an authorization error, which is misleading for debugging and access reviews. Use positional placeholders to match the reordered grammar.

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