Desktop app v1.15.13 shows "No MCPs configured" despite MCP servers being loaded by sidecar #30368

Description

MCP servers defined in ~/.config/opencode/opencode.json are correctly loaded and connected by the desktop app's sidecar (confirmed in logs), but the frontend UI (Ctrl+; MCP toggle panel) displays "0 MCPs" / "No MCPs configured". The same config works perfectly with the CLI (opencode mcp list shows all 9 servers connected).

MCP servers defined: 9 (everything, memory, git, duckduckgo, fetch, sequential-thinking, github, time, filesystem)

Additional notes:

Config file was originally .jsonc, renamed to .json — no change
Full OS restart performed — no change
MCP data is fetched by frontend via sdk.mcp.status() API call to sidecar, which returns empty despite sidecar having connected servers

Plugins

None

OpenCode version

OpenCode Desktop: v1.15.13 and OpenCode CLI: v1.4.1

Steps to reproduce

Define MCP servers in ~/.config/opencode/opencode.json using standard format:
{
"mcp": {
"example": {
"type": "local",
"command": ["npx", "-y", "some-mcp-server"],
"enabled": true
}
}
}
Launch desktop app v1.15.13
Press Ctrl+; to open MCP toggle panel
Observe "No MCPs configured" with 0 servers listed

Screenshot and/or share link

Expected behavior: MCP servers from the config file should appear in the toggle panel with their status (connected/failed), allowing enable/disable toggling.

Actual behavior:

Sidecar loads and connects to all MCP servers (confirmed in %LOCALAPPDATA%\ai.opencode.desktop\logs\opencode-desktop_*.log)
Frontend dialog-select-mcp component reads sync.data.mcp but receives empty data
MCP servers work via CLI (opencode-cli.exe mcp list shows all connected)

Sidecar log evidence:

INFO sidecar: ERROR service=mcp clientName=github
INFO sidecar: ERROR service=mcp clientName=memory
INFO sidecar: ERROR service=mcp clientName=duckduckgo
INFO sidecar: ERROR service=mcp clientName=filesystem
INFO sidecar: ERROR service=mcp clientName=time
INFO sidecar: ERROR service=mcp clientName=git
INFO sidecar: ERROR service=mcp clientName=everything
INFO sidecar: ERROR service=mcp clientName=sequential-thinking

Operating System

windows 10

Terminal