fix AI-10
fix AI-109
fix PD-2484
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added a method to check if a document requires embedding, improving embedding efficiency.
- Enhanced document embeddings with enriched metadata, including title, summary, creation/update dates, and author information.
- Introduced a new type for document fragments with extended metadata fields.
- **Improvements**
- Embedding logic now conditionally processes only documents needing updates.
- Embedding content now includes document metadata for more informative context.
- Expanded and improved test coverage for embedding scenarios and workspace behaviors.
- Event emission added for workspace embedding updates on client version mismatch.
- Job queueing enhanced with prioritization and explicit job IDs for better management.
- Job queue calls updated to include priority and context identifiers in a structured format.
- **Bug Fixes**
- Improved handling of ignored documents in embedding matches.
- Fixed incorrect document ID assignment in embedding job queueing.
- **Tests**
- Added and updated snapshot and behavioral tests for embedding and workspace document handling.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
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