dsh web: frontend hangs (page loads, all features time out) when browser-skill plugin installed, even with a healthy bsk daemon

[11pmsleep]

Summary

DeepSeek Harness (dsh) web frontend hangs when @wxg-prc-cpg/browser-skill-dsh-plugin v0.1.1 is installed, even when the bsk daemon and browser extension are fully healthy. The static HTML returns instantly, but the browser tab hangs during JS boot — every backend-dependent feature times out (e.g. Settings → Models shows "加载提供方目录失败: signal timed out" / "failed to load provider directory: signal timed out"). Removing the plugin restores dsh to normal; reinstalling brings the hang back.

Environment

• Plugin: @wxg-prc-cpg/browser-skill-dsh-plugin v0.1.1 (installed via dsh plugin --profile web add @wxg-prc-cpg/browser-skill-dsh-plugin)
• dsh: @deepseek-ai/dsh 0.1.0-rc.8
• bsk CLI: 0.1.10 — daemon healthy, extension connected (bsk status OK, bsk navigate https://example.com works instantly)
• OS: Windows 10

Symptom

• curl http://127.0.0.1:3080/ → HTTP 200 in ~4ms (static HTML is fine)
• Opening the page in a real browser → the tab hangs during JS boot; bsk navigate / bsk snapshot to the page all time out
• Every feature that needs backend data times out, e.g. Settings → Models → "加载提供方目录失败: signal timed out"
• Intermittent — sometimes loads fine, sometimes hangs (unstable)

Key observation

• The bsk daemon is healthy (fresh uptime, extension connected, example.com loads instantly) — so this is not a stale/stuck daemon.
• Restarting the bsk daemon does NOT help.
• Removing the plugin (dsh plugin --profile web remove @wxg-prc-cpg/browser-skill-dsh-plugin) restores dsh immediately; reinstalling reproduces the hang.

Repro

1. dsh plugin --profile web add @wxg-prc-cpg/browser-skill-dsh-plugin
2. Restart dsh web
3. Open http://127.0.0.1:3080/ → frontend hangs, features time out
4. Remove the plugin → dsh works again

Notes

• Related dsh web profile: client bundle registers under stale package name (__ModuleLoader__.load id mismatch) #113 (client-bundle registered under stale package name) appears fixed in v0.1.1 — client.cjs __ModuleLoader__.load now uses @wxg-prc-cpg/browser-skill-dsh-plugin. This hang is a separate issue.
• Also related: Extension connection dies after long idle #36 (extension connection dies after long idle) — but here the daemon is fresh/healthy, so this is a different case.