i18n(cs): automated Crowdin translation import (part 05 of 13)

[minimalsm]

Summary

• Part 05 of 13 — cs translation import split from i18n: automated Crowdin translation import (cs) #17247
• 24 files

Context

Split from the original large import PR for easier review and independent merging.

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[minimalsm]

Translation Quality Review

Language: Czech (cs) | Files reviewed: 24 (10 in-depth, all scanned) | Model: Claude Opus 4.6

Quality Score: 7/10

Category	Score	Notes
Brand Name Preservation	9/10	All brand names (Ethereum, Geth, Prysm, Chainlink, etc.) correctly preserved
Technical Accuracy	8/10	Code blocks untouched, URLs intact; minor terminology inconsistency (rollapů for rollupů)
Naturalness & Fluency	7/10	Generally fluent Czech; some headings had duplicate Czech+English text (Crowdin artifact)
Terminology Consistency	6/10	Inconsistent oracle/orákulum usage is acceptable, but several typos and a Russian character leaked through

Issues Found & Fixed

Crowdin Artifacts (duplicate headings) - 5 instances across 3 files:

• oracles/index.md: 3 headings had both Czech and English text concatenated (e.g., "Co je blockchainové orákulum? Co je to blockchain oracle?")
• scaling/optimistic-rollups/index.md: 1 duplicate heading
• scaling/index.md: 1 duplicate heading

Typos & Language Errors - 6 instances across 5 files:

• oracles/index.md line 201: Russian Cyrillic на instead of Czech na
• oracles/index.md line 27: Slovak žiadna instead of Czech žádná
• oracles/index.md line 239: Doubled letter nemajjí → nemají
• oracles/index.md line 295: Typo zajišťema → zajištěna
• oracles/index.md line 9: Typo určilí → určí
• scaling/optimistic-rollups/index.md desc: rollapů → rollupů

Frontmatter Issues - 1 instance:

• nodes-and-clients/index.md: Leading space in title " Uzly a klienty" → "Uzly a klienti"

Grammar Fixes - 2 instances:

• scaling/plasma/index.md: od postranním řetězců → od postranních řetězců
• scaling/validium/index.md: škalovací → škálovací (missing háček)
• scaling/state-channels/index.md: Same škalovacím → škálovacím fix

All issues have been fixed in commit 2e89bdc.

Summary

The Czech translations are generally well done with natural phrasing and accurate technical content. The main issues were Crowdin artifacts (duplicate heading text combining Czech and English), several typos including a Russian Cyrillic character that leaked through, and minor spelling errors. All brand names, code blocks, and URLs were properly preserved.