chore(types): add internal only ContentRevision to types.SearchResult

internal/application/service/chat_pipeline/search_entity.go

@@ -211,6 +211,7 @@ func chunk2SearchResult(chunk *types.Chunk, knowledge *types.Knowledge) *types.S
 	return &types.SearchResult{
 		ID:                chunk.ID,
 		Content:           chunk.Content,
+		ContentRevision:   chunk.ContentRevision,
 		KnowledgeID:       chunk.KnowledgeID,
 		ChunkIndex:        chunk.ChunkIndex,
 		KnowledgeTitle:    knowledge.Title,

internal/application/service/knowledgebase_search_results.go

@@ -309,6 +309,7 @@ func (s *knowledgeBaseService) buildSearchResult(chunk *types.Chunk,
 	return &types.SearchResult{
 		ID:                      chunk.ID,
 		Content:                 chunk.Content,
+		ContentRevision:         chunk.ContentRevision,
 		KnowledgeID:             chunk.KnowledgeID,
 		ChunkIndex:              chunk.ChunkIndex,
 		KnowledgeTitle:          knowledge.Title,

internal/types/search.go

@@ -207,6 +207,11 @@ type SearchResult struct {
 
 	// KnowledgeBaseID is the ID of the knowledge base this result belongs to
 	KnowledgeBaseID string `json:"knowledge_base_id,omitempty"`
+
+	// ContentRevision is the chunk edit revision at retrieval time.
+	// Internal only: used by the merge pipeline to decide whether source
+	// coordinates are still trustworthy.
+	ContentRevision int `json:"-"`
 }
 
 // SearchParams represents the search parameters