Three console.log calls in main.ts were flooding stdout during normal
operation:
1) `console.log("Starting download:", cmd, args)` — redundant with
the appendDebugLog("download-part-start", ...) one line below.
Duplicate logging; pure noise.
2) `console.log("Streamlink:", line)` — fired for every line of
streamlink stdout, which is 10-100 lines/sec during an active
download. Hundreds of thousands of lines per multi-hour recording.
Progress + state parsing already happens on the same line; the
raw output was never consumed.
3) `console.log("Download progress: X%")` in the autoUpdater
handler — fires ~10x/sec during an in-flight update download.
The renderer banner is the user-visible feedback; this was
developer-only and never necessary in prod.
Removed all three. The remaining four console.log calls (login
flow, update-available, update-downloaded, no-updates-available)
are once-per-event and fine to keep.
Practical benefit: stdout becomes useful for actual diagnostics
again. Performance gain is marginal in absolute terms but the
buffered noise on a long-running session was real.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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