Windows: claude update crashes (Bun panic) and official installer URL unreachable

Environment

• OS: Windows 10 Pro 10.0.19045 (x64)
• Claude Code: 2.1.42
• Bun: Canary v1.3.9-canary.62 (6d2fefba)
• CPU: SSE4.2, AVX, AVX2

Problem 1: claude update crashes with Bun panic

PS C:\Users\Oleg> claude update
============================================================
Bun Canary v1.3.9-canary.62 (6d2fefba) Windows x64 (baseline)
Windows v.win10_cu

panic(main thread): Illegal instruction at address 0x7FF7BEEC11A0
oh no: Bun has crashed. This indicates a bug in Bun, not your code.

https://bun.report/1.3.9/e_26d2fefbAggggCg6ostC8wjntCmn/mtCm5+mtCg2kz9Bm3ku9Bwo+iL2vkgUm17jOimsjOw0vxvDCYKERNEL32.DLLo35FCSntdll.dllipmTA3u//Bhm3vihC

Problem 2: Official installer URL doesn't resolve

PS C:\Users\Oleg> irm https://cli.claude.ai/install.ps1 | iex
Invoke-RestMethod: Этот хост неизвестен.

(cli.claude.ai DNS resolution fails)

Problem 3: Running Claude Code itself can OOM

During normal usage, Bun runs out of memory:

oh no: Bun has run out of memory.
RSS: 0.69GB | Peak: 0.72GB | Commit: 1.05GB | Faults: 254548 | Machine: 34.27GB

Machine has 34GB RAM, so this shouldn't happen.

Impact

• Cannot update Claude Code natively on Windows
• Official installer is unreachable
• The only working installation method is npm install -g @anthropic-ai/claude-code@latest, which Anthropic discourages

Expected

claude update should work, or at minimum cli.claude.ai should be reachable as a fallback.