## Why
Windows Terminal and xterm.js can render a theme that differs from the
underlying console color table. Querying that visible theme through OSC shares
the console input queue with keystrokes, including input for security-sensitive
startup prompts.
## What changed
- Defer the Windows OSC color probe until protected startup decisions and the
world-writable workspace scan have completed.
- Preserve and replay unrelated console input records around the probe, while
removing only valid OSC 10 and 11 replies and retaining the console palette
as a fallback.
- Require an explicit confirmation key after shortcuts select trust, sandbox,
or world-writable warning choices, so a fragmented terminal reply cannot
accept them.
- Accept one- through four-digit OSC RGB components so the visible terminal
palette is applied across supported response formats.
## Testing
Added coverage for delayed startup scans, protected prompt confirmation,
console-record replay, bracketed paste and malformed OSC preservation, RGB
response parsing, and light-theme composer rendering.
GitOrigin-RevId: b8ae456fe32c701ba3af31e9cc452fc4e8bffa22
Felipe Coury
70b5cfc73b