Add comprehensive tests for semantic chunking and search functionality

- Implemented tests for the ChunkConfig and Chunker classes, covering default and custom configurations.
- Added tests for symbol-based chunking, including single and multiple symbols, handling of empty symbols, and preservation of line numbers.
- Developed tests for sliding window chunking, ensuring correct chunking behavior with various content sizes and configurations.
- Created integration tests for semantic search, validating embedding generation, vector storage, and search accuracy across a complex codebase.
- Included performance tests for embedding generation and search operations.
- Established tests for chunking strategies, comparing symbol-based and sliding window approaches.
- Enhanced test coverage for edge cases, including handling of unicode characters and out-of-bounds symbol ranges.

ccw/src/templates/dashboard-css/10-cli.css

@@ -104,6 +104,10 @@
   opacity: 0.7;
 }
 
+.tool-item.endpoint {
+  border-left: 3px solid hsl(var(--indigo));
+}
+
 .tool-item-left {
   display: flex;
   align-items: center;