moved files

scripts/init_database/recreate_table.sql

@@ -0,0 +1,20 @@
+-- Drop the index first (if it exists)
+DROP INDEX IF EXISTS idx_messages_conversation;
+
+-- Drop the messages table (if it exists)
+DROP TABLE IF EXISTS messages;
+
+-- Recreate the messages table with TEXT conversation_id
+-- Note: UUID extension is no longer needed since conversation_id is TEXT
+CREATE TABLE messages (
+    id BIGSERIAL PRIMARY KEY,
+    conversation_id TEXT NOT NULL,
+    message_type VARCHAR(10) NOT NULL CHECK (message_type IN ('human', 'ai', 'tool')),
+    content TEXT NOT NULL,
+    sequence_number INTEGER NOT NULL CHECK (sequence_number >= 0),
+    created_at TIMESTAMPTZ DEFAULT NOW()
+);
+
+-- Recreate the index for fast retrieval of all messages in a conversation (in order)
+CREATE INDEX idx_messages_conversation ON messages (conversation_id, sequence_number);
+