i18n(ta): automated Crowdin translation import (part 11 of 13)

[minimalsm]

Summary

• Part 11 of 13 — ta translation import split from i18n: automated Crowdin translation import (ta) #17218
• 23 files

Context

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

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[minimalsm]

Translation review: Tamil (ta) - Part 11 of 13

Reviewed 22 markdown files + 1 JSON file. Ran 8 automated scans.

Issues found and fixed (commit e9463b8)

Cross-script contamination (2 issues):

• roadmap/security/index.md:16 — Telugu word "అప్పటి" mixed into Tamil text. Replaced with Tamil "அப்போதிலிருந்து" (meaning "since then")
• whitepaper/index.md:438 — Devanagari "प्रति" (Hindi "per") mixed into Tamil text. Replaced with English "per"

Broken URLs (4 issues in whitepaper/index.md):

• Line 19: http.bitcoinmagazine.com/... → http://bitcoinmagazine.com/...
• Line 24: http.www.weidai.com/... → http://www.weidai.com/...
• Line 290: http.namecoin.org/ → http://namecoin.org/
• Line 340: http.www.cl.cam.ac.uk/... → http://www.cl.cam.ac.uk/...

Escaped bold markdown (4 issues in whitepaper/index.md):

• Lines 282, 324, 332, 334: \*\* → ** (Crowdin artifact breaking bold formatting)

Tamil text inside code fences (2 issues in whitepaper/index.md):

• Line 36: APPLY(S,TX) -> S' அல்லது ERROR → restored English "or"
• Line 420: C50: comment translated to Tamil → restored English text

Clean scans (no issues)

• Crowdin double-quote artifacts (''): none found
• Split inline HTML / MDX risk: none found
• JSON empty values (glossary-tooltip.json): none found
• Broken markdown links: none found

Noted but not changed

• Tamil labels inside md code fence in security/index.md:200-202 — matches the English source pattern where descriptive labels are inside a display code block. Not a functional issue.
• Tamil brand transliterations (எதீரியம்) found in several files — these are stylistic choices by the translator, not errors.