feature: sessions sidebar

[vtemian]

Add a NERDTree-style sessions sidebar for quick session management with vim keybindings. Toggle with ctrl+n from any screen.

Features:

• Tree structure showing parent/child session relationships
• Vim-style keyboard navigation
• Relative timestamps ("2h", "3d")
• Status indicator (● busy / ○ idle)
• Context usage with filling circles (○ → ◔ → ◐ → ◕ → ●)
• Works globally from both home and session pages

Keybindings:

Key	Action
j/k or ↑/↓	Move cursor
Enter or o	Open session / Toggle expand
O	Expand all children
x	Collapse parent
X	Collapse all
p	Go to parent
g/G	Jump to top/bottom
n	New session
r	Rename session
d	Delete session
?	Show help
q or Esc	Close sidebar

2025-12-19.16-43-06.mp4

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✨ Finishing touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[shuv1337]

/review

[github-actions]

lgtm

[shuv1337]

/opencode remove the config default for the new keybind to avoid clobbering users existing keybinds

[opencode-agent]

remote: Permission to vtemian/opencode.git denied to opencode-agent[bot].
fatal: unable to access 'https://github.com/vtemian/opencode.git/': The requested URL returned error: 403

opencode session  |  github run

[opencode-agent]

User opencode-agent[bot] does not have write permissions

github run