Phase 3: Memory & Growth - Multi-file fusion, Entity alignment with embedding, Document import, Knowledge base panel

backend/schema.sql

@@ -16,7 +16,9 @@ CREATE TABLE IF NOT EXISTS transcripts (
     project_id TEXT NOT NULL,
     filename TEXT,
     full_text TEXT,
+    type TEXT DEFAULT 'audio',  -- 'audio' 或 'document'
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
+    updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     FOREIGN KEY (project_id) REFERENCES projects(id)
 );
 
@@ -29,6 +31,7 @@ CREATE TABLE IF NOT EXISTS entities (
     type TEXT,
     definition TEXT,
     aliases TEXT,  -- JSON 数组：["别名1", "别名2"]
+    embedding TEXT,  -- JSON 数组：实体名称+定义的 embedding
     created_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     updated_at TIMESTAMP DEFAULT CURRENT_TIMESTAMP,
     FOREIGN KEY (project_id) REFERENCES projects(id)
@@ -71,3 +74,12 @@ CREATE TABLE IF NOT EXISTS glossary (
     frequency INTEGER DEFAULT 1,
     FOREIGN KEY (project_id) REFERENCES projects(id)
 );
+
+-- 创建索引以提高查询性能
+CREATE INDEX IF NOT EXISTS idx_entities_project ON entities(project_id);
+CREATE INDEX IF NOT EXISTS idx_entities_name ON entities(name);
+CREATE INDEX IF NOT EXISTS idx_transcripts_project ON transcripts(project_id);
+CREATE INDEX IF NOT EXISTS idx_mentions_entity ON entity_mentions(entity_id);
+CREATE INDEX IF NOT EXISTS idx_mentions_transcript ON entity_mentions(transcript_id);
+CREATE INDEX IF NOT EXISTS idx_relations_project ON entity_relations(project_id);
+CREATE INDEX IF NOT EXISTS idx_glossary_project ON glossary(project_id);