feat(cli): add -a global mode for session list

[cavanaug]

Issue for this PR

Closes #14561
Related: #8836

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Adds -a/--all to opencode session list so users can list sessions across all projects.
Without -a, behavior stays project-scoped as before.
When -a is used with table output, the list includes a Project ID column to make cross-project results readable.

How did you verify your code works?

Ran:

• bun test test/cli/session-list.test.ts test/server/global-session-list.test.ts test/server/session-list.test.ts from packages/opencode

All tests passed.

Screenshots / recordings

N/A (CLI output change only)

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Based on my search, I found one potentially related PR:

Related PR:

• fix(tui): scope session list to current directory (#8836) #8886 - "fix(tui): scope session list to current directory (session list is showing all sessions not only the ones scopes to the curent dir #8836)"
  • fix(tui): scope session list to current directory (#8836) #8886
  • This PR addresses scoping session lists to the current directory, which is related to the filtering behavior that the current PR (feat(cli): add -a global mode for session list #15178) is extending with a global -a flag to show sessions across all projects.

The current PR (#15178) is building upon this related work by adding a way to explicitly show all sessions across projects when needed, rather than just showing sessions in the current directory context.

[Copilot]

Pull request overview

This PR adds a -a/--all flag to the opencode session list command to enable viewing sessions across all projects, addressing issue #14561. The default behavior (without -a) continues to scope session listings to the current project context, fixing the issue reported in #8836.

Changes:

• Add -a/--all CLI option to list sessions globally across all projects
• Conditionally display a "Project ID" column in table output when using -a flag
• Add comprehensive tests for CLI formatting functions and global session filtering

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
packages/opencode/src/cli/cmd/session.ts	Added -a/--all option, conditional routing to Session.listGlobal(), and exported formatting functions with project ID column support
packages/opencode/test/cli/session-list.test.ts	New test file for CLI formatting functions verifying Project ID column visibility and JSON output
packages/opencode/test/server/global-session-list.test.ts	Added test verifying root session filtering works correctly across multiple projects

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

The maxProjectWidth calculation on line 138 is performed even when all is false/undefined, meaning it's computed but never used. Consider moving this calculation inside the conditional block where all is true to avoid unnecessary computation when displaying the default table format.

[cavanaug]

Good call. Addressed in 4eb2755: maxProjectWidth is now computed only when --all is enabled.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍

[cavanaug]

Addressed feedback:

• Updated PR description to match the required template sections
• Applied the suggested optimization in 4eb2755 so is only computed when is enabled
• Re-ran: bun test v1.3.9 (cf6cdbbb) (all passing)

[cavanaug]

Addressed feedback:

• Updated PR description to match the required template sections
• Applied the suggested optimization in commit 4eb2755 so maxProjectWidth is only computed when --all is enabled
• Re-ran from packages/opencode: bun test test/cli/session-list.test.ts test/server/global-session-list.test.ts test/server/session-list.test.ts (all passing)