dsh-session-theme

dsh-session-theme

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DSH web plugin: the left sidebar shows every session's theme right on page load — no need to click into a conversation first.

The problem

In the DSH sidebar, sessions you haven't opened yet show no theme — just the workspace folder name (or a placeholder id). The theme only appears after you click into the session.

Root cause: for "cold" sessions (never opened in this process), session.list only reads the projection cache's zero-I/O rows (cachedSnapshot). If a session's title projection was never checkpointed, its list row has no title, so the sidebar falls back to the folder name. Only opening the session (which triggers the full cold-read ladder) recovers the title.

How it works

At startup the plugin runs the projection cache's cold-read ladder (coldSnapshot) for every persisted session: it refolds the title projection from the stored log and durably writes it back to the cache. After that, every row returned by session.list carries a title projection → the sidebar natively shows each session's real theme, no click required.

• Only "cold" sessions are processed (not opened in this process); sessions that are already loaded already carry live projections in their list rows.
• Fail-soft per session: a corrupted log never affects other sessions and never blocks startup.
• Idempotent write-back: the next boot hits the cache fast path instantly.

See ARCHITECTURE.md for the full design and data flow.

Verify it works

1. Install the plugin (any method below), then hard-refresh the browser (Ctrl/Cmd+Shift+R).
2. Open the DSH Web sidebar — every session row should show its conversation theme, not a folder name.
3. To confirm the hit, run: dsh plugin --profile web add dsh-session-theme and watch the server log for the line: dsh-session-theme: projection cache warmed (N sessions).

Install

Link install, zero external dependencies (host side uses only standard services):

dsh plugin --profile web add link:/path/to/dsh-session-theme

Or clone from GitHub:

git clone https://github.com/Xliecc/dsh-session-theme.git
dsh plugin --profile web add link:./dsh-session-theme

Or install from npm:

dsh plugin add dsh-session-theme

After installing, hard-refresh the browser (Ctrl/Cmd+Shift+R) so the client re-pulls session.list.

Files

• lib/index.js — host side: warms the projection cache at startup (all behavior)
• lib/client.js — browser-side stub (no-op, keeps the registered manifest consistent)

License

MIT