гих хук и сохранение изменений в контексте стори

docker/postgres-init/01-schema.sql

@@ -6,7 +6,10 @@ CREATE EXTENSION IF NOT EXISTS vector;
 CREATE TABLE IF NOT EXISTS stories (
     id SERIAL PRIMARY KEY,
     slug TEXT UNIQUE NOT NULL,
-    created_at TIMESTAMPTZ NOT NULL DEFAULT (NOW() AT TIME ZONE 'utc')
+    created_at TIMESTAMPTZ NOT NULL DEFAULT (NOW() AT TIME ZONE 'utc'),
+    indexed_base_ref TEXT,
+    indexed_head_ref TEXT,
+    indexed_at TIMESTAMPTZ
 );
 
 CREATE TABLE IF NOT EXISTS documents (
@@ -24,9 +27,15 @@ CREATE TABLE IF NOT EXISTS chunks (
     chunk_index INTEGER NOT NULL,
     hash TEXT NOT NULL,
     content TEXT NOT NULL,
-    embedding vector(1536) NOT NULL
+    embedding vector(1536) NOT NULL,
+    start_line INTEGER,
+    end_line INTEGER,
+    change_type TEXT NOT NULL DEFAULT 'added'
+        CHECK (change_type IN ('added', 'modified', 'unchanged')),
+    previous_content TEXT
 );
 
 CREATE INDEX IF NOT EXISTS idx_documents_story_id ON documents(story_id);
 CREATE INDEX IF NOT EXISTS idx_chunks_document_id ON chunks(document_id);
 CREATE INDEX IF NOT EXISTS idx_chunks_embedding ON chunks USING ivfflat (embedding vector_cosine_ops);
+CREATE INDEX IF NOT EXISTS idx_chunks_change_type ON chunks(change_type);