75911faeebffb32affcb5087769252cb09a806c8
Replace box-drawing characters (U+2500) in session log with ASCII dashes. Replace em dashes (U+2014) in CLAUDE.md template with double hyphens. Remove em dash from comment in run.go. Add ASCII-guard tests for session log output and seed templates. Prevents mojibake on Windows terminals that misinterpret UTF-8 as CP1252. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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