tui: local plugins fail to load on Windows #43644

On Windows 11, opencode2 beta-17728: TUI plugins loaded from local paths fail to load. Two documented ways to configure them, both broken:

1. Drop a plugin file in ~/.config/opencode/plugins/tui/ — per the docs: "OpenCode also discovers JavaScript and TypeScript plugins from plugins/tui under the global config directory and project .opencode directories."
2. Reference it from cli.json, e.g. "plugins": ["./plugins/tui/status.js"] — same shape as the documented "./plugins/status.ts" example.

Both fail in the TUI with:

Cannot find module 'C:/Users/me/.config/opencode/plugins/tui/status.js?mtime=1787229062999' imported from B/~BUN/root/chunk-q1n955ge.js

Notably:

• Server-side plugins from the identical local path (same ?mtime= suffix) load fine.
• In the TUI, plugin packages installed into the cache load fine (entrypoint is a plain file:// URL).

Platform difference, probed with the same bun version opencode2 is built on (1.3.14):

• Windows: import("C:/.../x.js") fails — even without the ?mtime=. import("file:///C:/.../x.js?mtime=...") works.
• Linux (WSL): import("/tmp/.../x.js?mtime=...") works fine.

So the entry string for local plugins (a raw drive path) can't be imported by bun on Windows.

Environment: Windows 11 (win32 x64, 10.0.26100), opencode2 0.0.0-beta-17728, PowerShell, no terminal emulator env vars.

Happy to provide logs or a minimal repro if useful.