Fix dev server visibility when switching sessions within a workspace (Vibe Kanban) #2016
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…anges made: ## Summary ### Backend Changes 1. **`crates/db/src/models/execution_process.rs`** - Added new method `find_dev_servers_by_workspace()` that returns all dev servers for a workspace (not just running ones) 2. **`crates/services/src/services/events/streams.rs`** - Added new method `stream_dev_servers_for_workspace_raw()` that streams dev server processes for a workspace across all sessions - Added imports for `Session` model and `ExecutionProcessRunReason` 3. **`crates/server/src/routes/execution_processes.rs`** - Added `WorkspaceDevServerQuery` struct - Added new WebSocket endpoint `stream_dev_servers_by_workspace_ws` at `/stream/workspace-dev-servers/ws` - Registered the new route in the router ### Frontend Changes 4. **`frontend/src/hooks/useWorkspaceDevServers.ts`** (NEW FILE) - Created new hook that connects to the workspace dev server WebSocket endpoint - Exposes `devServers`, `runningDevServers`, and other state 5. **`frontend/src/components/ui-new/hooks/usePreviewDevServer.ts`** - Changed from `attemptId` to `workspaceId` parameter - Now uses `useWorkspaceDevServers` instead of `useAttemptExecution` - Updated query key to use `workspaceDevServers` 6. **`frontend/src/components/ui-new/containers/PreviewBrowserContainer.tsx`** - Removed `attemptId` prop (now uses `workspaceId` from `useWorkspaceContext()` directly) - Updated to use workspace-scoped dev server streaming 7. **`frontend/src/components/ui-new/containers/PreviewControlsContainer.tsx`** - Removed `attemptId` prop (now uses `workspaceId` from `useWorkspaceContext()` directly) - Updated to use workspace-scoped dev server streaming 8. **`frontend/src/components/ui-new/containers/WorkspacesLayout.tsx`** - Removed the `attemptId` props from `PreviewControlsContainer` and `PreviewBrowserContainer` usages ### Database Changes - Ran `pnpm run prepare-db` to update the SQLx query cache for the new database query
…n-scoped `useDevServer` hook, which caused `runningDevServers` to be empty when the user switched sessions. This made the `ToggleDevServer` action think there was no running dev server and call `startDevServer()` instead of `stopDevServer()`. Now `ActionsContext.tsx` uses `usePreviewDevServer` which is backed by the workspace-scoped `useWorkspaceDevServers` hook, so it correctly sees running dev servers across all sessions in the workspace.
stunningpixels
changed the title
ggordonhall
approved these changes
Jan 14, 2026
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Summary
This PR fixes a bug where dev servers would disappear from the preview panel when switching between sessions within the same workspace. The root cause was that the
ActionsContextwas using a session-scoped hook (useDevServer), which causedrunningDevServersto be empty when viewing a different session than the one that started the dev server.Changes
Backend (Rust)
crates/db/src/models/execution_process.rs): Addedfind_dev_servers_by_workspace()to query dev servers across all sessions in a workspacecrates/server/src/routes/execution_processes.rs): Added/stream/workspace-dev-servers/ws?workspace_id={id}for workspace-scoped dev server streamingcrates/services/src/services/events/streams.rs): Implementedstream_dev_servers_for_workspace_raw()that streams only dev server processes belonging to the specified workspaceFrontend (React/TypeScript)
frontend/src/hooks/useWorkspaceDevServers.ts): Low-level hook that connects to the workspace dev servers WebSocket streamusePreviewDevServer(frontend/src/components/ui-new/hooks/usePreviewDevServer.ts): Changed from session-scoped to workspace-scoped data sourceActionsContext(frontend/src/contexts/ActionsContext.tsx): Switched fromuseDevServertousePreviewDevServerfor workspace-scoped visibilityattemptIdprop since workspace ID is now sourced from contextWhy These Changes
Previously, dev servers were tracked at the session level. When a user started a dev server in Session A, then switched to Session B, the preview panel would show no running dev server because Session B's execution processes didn't include the dev server from Session A.
With this change, dev servers are now tracked at the workspace level, making them visible regardless of which session is currently active. This matches user expectations since dev servers are workspace-wide resources.
Implementation Details
useJsonPatchWsStream, similar streaming endpoints)This PR was written using Vibe Kanban