tui: /sessions omits older roots when child sessions fill first page

[magoz]

Summary

In OpenCode 2 beta, /sessions omits resumable root sessions when recent child/subagent
sessions fill the first session-list page. The sessions remain available through the API
and can be resumed directly with opencode2 --session.

Environment

• opencode version: opencode2 v0.0.0-next-15828
• OS: Darwin 25.4.0, arm64
• Terminal: tmux, TERM=xterm-256color, COLORTERM=truecolor
• Shell: /bin/zsh
• Install/channel: OpenCode 2 next/beta
• Active plugins: opencode-anthropic-auth.mjs

Reproduction

1. Use a project containing older root sessions and many newer child/subagent sessions.
2. Start OpenCode 2 in that project.
3. Open /sessions.
4. Compare the picker with:
   opencode2 api get '/api/session?order=desc&limit=100'
5. Query roots server-side with:
   opencode2 api get '/api/session?order=desc&limit=100&parentID=null'

Expected Behavior

/sessions requests root sessions server-side and shows all matching resumable roots,
with pagination as needed.

Actual Behavior

The picker shows only two recent roots. In the same project:

• The unfiltered 100-item page contains 2 roots and 98 children.
• parentID=null returns 3 roots for the current directory.
• The omitted root opens successfully using opencode2 --session <session-id>.

This suggests the TUI still fetches an unfiltered page and removes children client-side,
causing children to consume the page limit before root filtering.

Additional Context

The issue is consistently reproducible after restarting the computer, though restart
does not appear causal. Session persistence and service health are normal.

Workaround:

opencode2 --session <session-id>

Related:

• TUI /sessions picker only shows recent sessions #13877
• TUI session picker hides older root sessions when recent child sessions fill list #25897
• v2: add parentID filter to session list #34936 / feat(session): filter v2 session list by parent #35037 added V2 parentID filtering before pagination
• fix session switcher session list #33931 reportedly fixed the equivalent child-session dilution issue on dev

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• TUI /sessions picker only shows recent sessions #13877: TUI /sessions picker only shows recent sessions (open, same core symptom)
• TUI session picker hides older root sessions when recent child sessions fill list #25897: TUI session picker hides older root sessions when recent child sessions fill list (closed, nearly identical)
• TUI session picker: root sessions hidden when project has many subagent children #31881: TUI session picker: root sessions hidden when project has many subagent children (closed, same root cause)

It looks like you've already referenced #25897 and #33931 in the issue — if those didn't fully resolve the problem for the V2/beta path, it may be worth confirming whether this is a regression or a new variant of the same issue.

[opencode-agent]

Fixed in #37784 and merged into v2. The TUI data-store preload now requests parentID=null, so child sessions no longer consume the root-session page limit.