[Feature Request] Add --model flag to /compact command or config default for compaction model

Bug Description
i assume the "/compact" uses which ever modle is currently the active model" to review the conversation to create the summary. for very long conversations, I have noticed this can take a while and be relatively token intensive, so I usually do "/model haiku" -> "/compact" -> "/model opus".if I chain these commands in my conversation, sometimes the "/model opus" step is skipped. it would just be easier if I could do soemthing like "/compact --model haiku" or just set a default model for the "/compact" command in my config.

Environment Info

• Platform: darwin
• Terminal: iTerm.app
• Version: 2.1.25
• Feedback ID: b0ea3449-29dd-499a-9b84-0ece241d83e1

Errors

[{"error":"Error: ENOENT: no such file or directory, scandir '/Library/Application Support/ClaudeCode/.claude/skills'\n    at readdirSync (unknown)\n    at <anonymous> (/$bunfs/root/claude:12:2063)\n    at iW (/$bunfs/root/claude:11:35715)\n    at readdirSync (/$bunfs/root/claude:12:2024)\n    at wQR (/$bunfs/root/claude:1783:380)\n    at wQR (/$bunfs/root/claude:1783:1350)\n    at <anonymous> (/$bunfs/root/claude:1783:4670)\n    at <anonymous> (/$bunfs/root/claude:1783:5401)\n    at A (/$bunfs/root/claude:11:7259)\n    at Ay8 (/$bunfs/root/claude:4793:4342)","timestamp":"2026-02-03T13:47:26.367Z"},{"error":"Error\n    at sy (/$bunfs/root/claude:42:1144)\n    at <anonymous> (/$bunfs/root/claude:47:10093)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:861:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/claude:49:2149)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-02-03T13:47:26.589Z"},{"error":"AbortError: The operation was aborted.\n    at unknown\n    at abortChildProcess (node:child_process:935:42)\n    at onAbortListener2 (node:child_process:35:24)\n    at abort (unknown)\n    at <anonymous> (/$bunfs/root/claude:3000:209)","timestamp":"2026-02-03T13:47:31.518Z"}]