83a2d25062
The filesystem-tail rewrite (8bd5042) declared `const stdout` inside the
try block, shadowing the outer `let stdout = ""`. parseClaudeStreamJson
then ran on the empty outer binding, so every run failed with "Failed to
parse Claude JSON output" and resultJson={stdout:""} despite live
log-streaming working fine. Drop the `const` so the assignment lands on
the outer let.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>