feat: Add Firebolt Core connection support

[devin-ai-integration]

Add Firebolt Core connection support with dependency update

Summary

This PR adds support for Firebolt Core connections to the SQLAlchemy dialect. Core connections are identified by the presence of a "url" parameter in the connection string and use the FireboltCore authentication class instead of traditional username/password credentials.

Key Changes:

• Connection Detection: Modified create_connect_args() to detect Core connections via "url" parameter
• Authentication: Added FireboltCore auth support with credential validation (rejects username/password)
• Code Structure: Refactored create_connect_args() into helper methods to reduce cognitive complexity
• Dependency Fix: Updated firebolt-sdk dependency from non-existent core-support branch to main branch
• Test Coverage: Added comprehensive unit tests and integration test framework for Core connections
• Async Support: Fixed async dialect runtime error handling

Review & Testing Checklist for Human

This is a medium-risk change involving authentication and URL parsing modifications. Please verify:

• Test both connection types: Verify regular Firebolt connections still work and Core connections work with url parameter
• Credential validation: Confirm Core connections properly reject username/password credentials with clear error messages
• URL parsing edge cases: Test invalid Core URLs and ensure proper error handling
• Dependency stability: Verify the main branch SDK dependency doesn't introduce regressions in existing functionality
• Integration testing: Run integration tests against both staging environment and local Core instance if available

Recommended Test Plan:

1. Test regular connection: firebolt://user:pass@db/engine?account_name=test
2. Test Core connection: firebolt://db?url=http://localhost:3473
3. Test error cases: Core with credentials, invalid URLs, missing parameters

---

Diagram

%%{ init : { "theme" : "default" }}%%
graph TB
    setup["setup.cfg<br/>Dependency Update"]:::major-edit
    dialect["src/firebolt_db/<br/>firebolt_dialect.py<br/>Core Connection Logic"]:::major-edit
    async_dialect["src/firebolt_db/<br/>firebolt_async_dialect.py<br/>Runtime Error Fix"]:::minor-edit
    unit_tests["tests/unit/<br/>test_firebolt_dialect.py<br/>Core Unit Tests"]:::major-edit
    integration_tests["tests/integration/<br/>test_core_integration.py<br/>Core Integration Tests"]:::major-edit
    
    setup --> dialect
    dialect --> async_dialect
    dialect --> unit_tests
    dialect --> integration_tests
    
    subgraph Legend
        L1[Major Edit]:::major-edit
        L2[Minor Edit]:::minor-edit
        L3[Context/No Edit]:::context
    end
    
    classDef major-edit fill:#90EE90
    classDef minor-edit fill:#87CEEB
    classDef context fill:#FFFFFF

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Notes

• Core integration tests requiring local Firebolt Core instance are currently excluded from CI due to environment limitations
• The dependency update from core-support to main branch resolved CI failures and is confirmed working
• Authentication changes are isolated to Core connections and shouldn't affect existing regular connections
• All existing integration tests (10/10) pass with staging environment

Session Info:

• Link to Devin run: https://app.devin.ai/sessions/6b556c2334e842b99376a1a1083b6b5e
• Requested by: @ptiurin

[devin-ai-integration]

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[ptiurin]

Tests are passing. Confirmed Superset is working with Core as well.