Integration tests

[kashifpk]

Description

Create integration tests for Armory.

Tasks

• Set up pytest with async support
• Test MCP server communication
• Test tool registry aggregation
• Test multi-backend scenarios
• Test configuration loading
• Add CI workflow

Test Scenarios

• Connect to mock MCP server
• List tools from multiple backends
• Invoke tools and verify results
• Handle backend failures gracefully

Acceptance Criteria

• Tests run with uv run pytest
• CI runs tests on PR
• Good coverage of core functionality

[kashifpk]

Moved to Post-MVP phase - not blocking for initial release.