feat: add LanceDB vector database provider

- Implemented LanceDBProvider for managing vector collections, including methods for creating, deleting, and searching collections.
- Added support for LanceDB configuration in VectorDBConfig.
- Introduced stub for LanceDB provider when not built with the appropriate tag.
- Updated provider initialization to include LanceDB as a supported type.
- Created types and interfaces for vector operations, including Vector, SearchRequest, and SearchResult.
- Added tests for VectorDBConfig unmarshalling and for ensuring proper error handling when LanceDB is not built.
- Updated enums to include LanceDB type and labels.
- Modified frontend enums to reflect the addition of LanceDB.

internal/ai/rag/vectordb/qdrant.go

@@ -9,56 +9,11 @@ import (
 	"agent-desk/internal/pkg/config"
 )
 
-type Vector struct {
-	ID      string       `json:"id"`
-	Vector  []float32    `json:"vector"`
-	Payload ChunkPayload `json:"payload"`
-}
-
-type SearchRequest struct {
-	CollectionName string        `json:"collectionName"`
-	Vector         []float32     `json:"vector"`
-	TopK           int           `json:"topK"`
-	ScoreThreshold float32       `json:"scoreThreshold"`
-	Filter         *SearchFilter `json:"filter,omitempty"`
-}
-
-type SearchFilter struct {
-	KnowledgeBaseIDs []int64 `json:"knowledgeBaseIds,omitempty"`
-	DocumentIDs      []int64 `json:"documentIds,omitempty"`
-}
-
-type SearchResult struct {
-	ID      string       `json:"id"`
-	Score   float32      `json:"score"`
-	Payload ChunkPayload `json:"payload"`
-}
-
-type CollectionInfo struct {
-	Name       string `json:"name"`
-	Dimension  int    `json:"dimension"`
-	PointCount int    `json:"pointCount"`
-	Status     string `json:"status"`
-}
-
-type Provider interface {
-	CreateCollection(ctx context.Context, name string, dimension int) error
-	DeleteCollection(ctx context.Context, name string) error
-	GetCollection(ctx context.Context, name string) (*CollectionInfo, error)
-	ListCollections(ctx context.Context) ([]string, error)
-
-	UpsertVectors(ctx context.Context, collectionName string, vectors []Vector) error
-	DeleteVectors(ctx context.Context, collectionName string, ids []string) error
-
-	Search(ctx context.Context, req *SearchRequest) ([]SearchResult, error)
-	Close() error
-}
-
 type QdrantProvider struct {
 	client *qdrant.Client
 }
 
-func NewQdrantProvider(cfg *config.VectorDBConfig) (*QdrantProvider, error) {
+func NewQdrantProvider(cfg *config.QdrantVectorDBConfig) (*QdrantProvider, error) {
 	if cfg == nil {
 		return nil, fmt.Errorf("vectordb config is nil")
 	}