feat: handle MCP notifications/message from servers#19928
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…ect lvl CLAUDE.md (anomalyco#19924)
Add a setNotificationHandler for LoggingMessageNotificationSchema that publishes received messages as mcp.message.received bus events. This enables MCP servers (e.g. context-vault) to push notifications to OpenCode agents without requiring polling. The handler extracts level and data from the notification params and publishes them via the existing Bus infrastructure, making them available to any subscriber (TUI, agent context, etc.).
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Issue for this PR
Closes # N/A - small enhancement, not tied to a specific issue.
Type of change
What does this PR do?
Registers a setNotificationHandler for LoggingMessageNotificationSchema in the MCP client watch() function. When an MCP server sends a notifications/message, the handler extracts level and data from the notification params and publishes them as a mcp.message.received bus event.
This matters because MCP servers often need to push events to clients (e.g. a memory vault pushing mission assignments, checkpoint answers, or lifecycle events). Without this, the only option is client-side polling via tool calls. With this handler, servers can push via the standard MCP logging notification and clients receive it in real time.
The change is ~20 lines: one new import, one bus event definition, one notification handler registration alongside the existing ToolListChangedNotificationSchema handler.
How did you verify your code works?
Screenshots / recordings
N/A - no UI change.
Checklist