[Bug] Homebrew installation missing update notification on launch

Bug Description
Update notification never appears for Homebrew installation

I installed Claude Code via Homebrew (brew install --cask claude-code). I never receive the "Update available! Run: brew upgrade
claude-code" notification on launch, even when running outdated versions for extended periods.

Friends who also installed via Homebrew DO see this notification regularly.

I've verified:

• DISABLE_AUTOUPDATER is not set
• CLAUDE_CODE_DISABLE_NONESSENTIAL_TRAFFIC is not set
• ~/.claude/settings.json has no update-related overrides
• Homebrew auto-update is disabled (HOMEBREW_NO_AUTO_UPDATE or similar), so I'm consistently running behind the latest version

macOS: Darwin 25.2.0. The only way I can check for updates is manually running brew upgrade claude-code

Environment Info

• Platform: darwin
• Terminal: cursor
• Version: 2.1.25
• Feedback ID: a438b30a-84e5-4e8f-b369-18c6231ea0ec

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 (/$bunfs/root/claude:4793:4342)","timestamp":"2026-01-30T12:53:22.322Z"},{"error":"AbortError: The operation was aborted.\n    at unknown\n    at abortChildProcess (node:child_process:935:42)\n    at onAbortListener2 (node:child_process:35:24)\n    at abort (unknown)\n    at <anonymous> (/$bunfs/root/claude:3000:209)","timestamp":"2026-01-30T12:53:24.491Z"},{"error":"RipgrepTimeoutError: Ripgrep search timed out after 20 seconds. The search may have matched files but did not complete in time. Try searching a more specific path or pattern.\n    at D (/$bunfs/root/claude:74:189)\n    at <anonymous> (/$bunfs/root/claude:74:403)\n    at exitHandler (node:child_process:109:27)\n    at errorHandler (node:child_process:118:16)\n    at emitError (node:events:43:23)\n    at abortChildProcess (node:child_process:935:17)\n    at onAbortListener2 (node:child_process:35:24)\n    at abort (unknown)\n    at <anonymous> (/$bunfs/root/claude:3000:209)","timestamp":"2026-01-30T12:53:24.491Z"}]