Review of #158 (Request changes) — core logic verified correct; addressed the
test-coverage + localization items:
1. i18n pluralization: the token-count keys were called with {count} but had one
form, so ru-RU always rendered the genitive ("1 токенов"). Added _one/_other
(en) and _one/_few/_many (ru: токен/токена/токенов) for both "Thinking… ·
{{count}} tokens" and "Thinking · {{count}} tokens"; de-duped the PR-added
duplicate "Thinking" key. Call sites unchanged.
2. ReasoningBlock: new reasoning-block.test.tsx (4 branches: authoritative count
wins / estimate fallback / header-only when count-but-no-text / body render).
3. Reasoning-token attribution: extracted the #151 anti-double-count rule into a
pure `reasoningTokensForPart(message)` (single reasoning part -> authoritative
turn total; multiple/none -> undefined so each estimates). message-item uses
it; removed the now-dead lastReasoningIndex reduce (review #5). Unit-tested.
6. adopt-chat-id.ts: refreshed 3 stale `chatStreamStartMetadata` ->
`chatStreamMetadata` comment references.
7. chat-markdown.test.ts: assert the export footer's `reasoning: N` line appears
when reasoningTokens>0 and is absent at 0/undefined.
Skipped optional #4 (mantine useThrottledCallback): the manual throttle has two
distinct exit paths (turn-end revert-to-null + the captured-total trailing emit)
with no guarding test; remapping risks the streaming behavior — non-blocking.
Client tsc clean; ai-chat suite green (171 tests).
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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