[Feature Request] Expand all collapsed output blocks with single command

Bug Description
Ctrl+O only expands the most recent collapsed output. When reviewing a long task, I have to re-run queries to see earlier results. A way to expand all collapsed blocks in scrollback (or a navigation shortcut to step backward through them) would help.

Environment Info

• Platform: darwin
• Terminal: Apple_Terminal
• Version: 2.1.146
• Feedback ID: d577ca3f-753c-4d4c-bb73-1bcf2b7b1cf5

Errors

[{"error":"SyntaxError: JSON Parse error: Unterminated string\n    at <parse> (:0)\n    at parse (unknown)\n    at mfq (/$bunfs/root/src/entrypoints/cli.js:182:10088)\n    at O (/$bunfs/root/src/entrypoints/cli.js:138:18426)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:184:1658)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:7713:743)\n    at map (native:1:11)\n    at I0_ (/$bunfs/root/src/entrypoints/cli.js:7713:561)\n    at vBK (/$bunfs/root/src/entrypoints/cli.js:11829:11774)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-05-23T15:17:25.877Z"}]