High memory growth rate in native memory (~18.6 MB/s) on Windows 11

Description

Experiencing high memory usage from the Claude Code CLI process. A manual heapdump after only ~28 seconds of uptime shows rapid native memory growth.

Diagnostics

• Claude Code version: 2.1.73
• Node.js version: v24.3.0
• Platform: Windows 11 Pro (win32) 10.0.26200
• Trigger: Manual /heapdump
• Uptime at capture: ~28 seconds

Memory Usage

| Metric | Value |
|--------|-------|
| RSS (total process) | 497 MB |
| Heap used | 99 MB |
| Heap total | 45 MB |
| External memory | 67 MB |
| Array buffers | 20 MB |
| Peak malloced memory | 1.27 GB |

Growth Rate

• ~18.6 MB/second (~64 GB/hour)

Analysis (from diagnostics JSON)

• Native memory > heap — leak may be in native addons (node-pty, sharp, etc.)
• High memory growth rate: 63927.5 MB/hour

Steps to Reproduce

1. Launch Claude Code on Windows 11
2. Run /heapdump after ~30 seconds
3. Observe high RSS and native memory growth rate in diagnostics JSON

Expected Behavior

Memory growth rate should be minimal when idle or during light usage, not ~18.6 MB/s.

Additional Context

The diagnostics point to native memory (external > heap), suggesting the leak is in a native addon rather than JS-land.