Web sidebar shows 'no sessions' on Windows despite API returning them (F5 loses list; TUI sessions invisible)

Summary

Web UI sidebar shows "no sessions" for a project even though the server API returns all sessions. On Windows (native, not WSL), sessions created in the TUI are never listed in the web sidebar, and sessions created in the web disappear from the list after a page refresh (F5). The folder/project itself persists.

Environment

• opencode 1.18.18 (chocolatey), Windows native, pwsh
• Data dir: C:\Users\rcocchiararo\.local\share\opencode\opencode.db
• Server: opencode web --hostname 0.0.0.0 --port 4096 with OPENCODE_SERVER_PASSWORD (basic auth)

Facts verified

• Project C:/DEV/popei exists with 14 sessions in the DB, stored with forward slashes: C:/DEV/popei.
• /project/current returns worktree: "C:\\DEV\\popei" (backslash).
• GET /api/session?directory=C:/DEV/popei&roots=true&limit=50 returns 14 sessions. Same with backslash encoding. Server filter handles both.
• Sessions created in the web do show up in the TUI (shared DB). Sessions created in the TUI are not shown in the web sidebar.
• Direct URL navigation to a session (http://<host>:4096/<dir>/session/<id>) loads it fine (SPA returns 200) — only the sidebar list is broken.
• The client bundle (index-CQtwhDOb.js) normalize fn already converts backslashes to forward slashes and strips trailing slashes:
  Ge=e=>{const t=Sye(e)?e.replaceAll("\\","/"):e,n=kye(t);return !n&&t.startsWith("/")?"/":xye(n)?${n}/:n}
  and the sidebar filter is JAe=(e,t)=>Ge(e.directory)===Ge(t)&&!e.parentID&&!e.time?.archived, so the separator mismatch should NOT be the cause — yet the list is empty.

Expected

After adding/selecting a project, the sidebar should list existing sessions from the API, and the list should survive F5.

Possibly related

• #10519 Web UI not showing my sessions
• #12262 Session list not updating / scoping issues
• #21340 Path separator mismatch hiding sessions on Windows
• #35340 v1.17.13 web UI session list still empty
• #36237 Web UI session list stays empty until manual server/directory click