[BUG] Pipeline Not Discoverable from Copilot When Agents Without MCP Tags Are Included

[liana-gif]

Description:

When agents that are part of the pipeline do not contain MCP tags, the pipeline becomes undiscoverable from Copilot. This prevents Copilot from detecting or initializing the pipeline properly.

Steps to Reproduce:

Create or modify a pipeline to include one or more agents without MCP tags or use attached one .
Add mcp tag to the pipeline.
Attempt to discover the pipeline from Copilot.

Observe that the pipeline is not detected.

Expected Result:

The pipeline should remain discoverable from Copilot even if some agents lack MCP tags, or a validation error should be raised clearly indicating missing MCP tags.

Actual Result:

The pipeline is not discoverable.

[epamLDadayan]

@breilian This is actuall and not working in case if in project I have only Pipelines with MCP tag. Unable to start the MCP server from VSCode:

2025-10-24 17:23:03.805 [warning] [server stderr] self._get_list_of_apps()
2025-10-24 17:23:03.806 [warning] [server stderr] ~~~~~~~~~~~~~~~~~~~~~~^^
2025-10-24 17:23:03.806 [warning] [server stderr] File "/Users/levondadayan/.local/pipx/venvs/alita-mcp/lib/python3.13/site-packages/alita_mcp/clients/alita.py", line 73, in _get_list_of_apps
2025-10-24 17:23:03.806 [warning] [server stderr] raise ApiDetailsRequestError("No MCP tag found")
2025-10-24 17:23:03.806 [warning] [server stderr] alita_mcp.clients.alita.ApiDetailsRequestError: No MCP tag found
2025-10-24 17:23:03.860 [info] Connection state: Error Process exited with code 1