#22 Add Oracle connector/runtime

[Anonymous]

Originally created by: intraq-dev-ai

Connector gap

WrenAI supports Oracle. IntraQ accepts/lists Oracle in some source-type paths, but the live SQL runner does not execute Oracle queries.

Evidence

WrenAI docs list Oracle as a supported data source. IntraQ has Oracle dialect awareness, but live execution types/runners only cover PostgreSQL, MySQL/MariaDB, SQL Server, Databricks, and ClickHouse.

Acceptance criteria

• Add a real Oracle connector/runtime.
• Support host/port/service-name or SID connection configuration.
• Support schema discovery, query preview, SQL Editor execution, Analyzer, and Dashboard Builder.
• Add tests for Oracle query limits, bind variables, type normalization, and connection errors.