Delta indexes

[rostilos]

Main changes:

• Default branch -> main branch, which is now used to train the main RAG.

Delta indexes added (beta version).

• For non-main branches - diff indexing between the target branch and main.
• Branches that fall under Branch Push Patterns will now have delta RAG indexes (useful for flow when release branches are present).

Additional Changes & bugfix:

New analysis-api module:

• Added new Maven module codecrow-analysis-api with its own pom.xml, .gitignore, and Java module descriptor (module-info.java). This module provides API interfaces for RAG operations, allowing other modules to depend on interfaces without requiring implementation details. [1] [2] [3]
• Introduced RagOperationsService interface, defining methods for checking RAG and delta index status, triggering updates, and supporting hybrid RAG scenarios. This interface enables optional and testable RAG integration.

Integration with analysis-engine:

• Updated analysis-engine to depend on the new codecrow-analysis-api and codecrow-events modules in its pom.xml and module-info.java. This allows the engine to use the new RAG API and publish/subscribe to analysis events. [1] [2]
• Modified BranchAnalysisProcessor to inject and use RagOperationsService and ApplicationEventPublisher, enabling RAG operations and event publishing for analysis lifecycle events. [1] [2] [3] [4]

Event-driven analysis processing:

• Enhanced the process method in BranchAnalysisProcessor to publish AnalysisStartedEvent and AnalysisCompletedEvent (success or failure) with relevant metadata, such as correlation ID, status, and file counts. This provides better observability and integration points for analysis workflows. [1] [2] [3] [4] [5]

Build and metadata updates:

• Added generated and input file tracking for the new analysis-api module in the Maven target directory. [1] [2]

These changes collectively improve the modularity, extensibility, and observability of the analysis subsystem by introducing a clean API boundary for RAG operations and supporting event-driven processing.

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