The spawn context inject was sending Enter too quickly after pasting
large messages. Claude needs time to process the paste before Enter
is sent (Claude shows "Pasted text #1 +N lines" message).
Increased debounce timing:
- Base delay: 100ms → 200ms
- Per-KB scaling: 50ms → 100ms
- Max cap: 500ms → 1500ms
For a typical 4KB spawn context, this gives 600ms (vs 300ms before).
Fixes: gt-eqys
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
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