TASK-P2-013: Create arcadedb-spi Module #2992

Task Details

Epic: #2976 (Phase 2: Architecture)
Priority: HIGH
Effort: 3 days
Dependencies: TASK-P2-012

Description

Extract extension points to SPI module with versioning independent of implementation.

Steps

1. Create arcadedb-spi module
2. Move SPI interfaces:
   • QueryEngine, IndexType, StorageBackend
   • SecurityProvider, EventListener
3. Depend on arcadedb-api
4. Add comprehensive JavaDoc
5. Document stability guarantees
6. Version 1.0.0

Files to Create

• spi/pom.xml
• spi/src/main/java/com/arcadedb/spi/QueryEngine.java
• spi/src/main/java/com/arcadedb/spi/IndexType.java
• spi/src/main/java/com/arcadedb/spi/StorageBackend.java
• spi/src/main/java/com/arcadedb/spi/SecurityProvider.java
• spi/src/main/java/com/arcadedb/spi/EventListener.java

Dependencies

<dependency>
    <groupId>com.arcadedb</groupId>
    <artifactId>arcadedb-api</artifactId>
    <version>1.0.0</version>
</dependency>

Acceptance Criteria

• SPI module created
• All extension points included
• 100% JavaDoc coverage
• Versioned separately from impl