-- Migration: Central Gitea + Unified Actor (changes.md Phase 6)
-- Renames/replaces per-user Gitea fields with central Gitea repo references.
-- Simplifies actors table for unified user actor model.
-- Adds version tracking columns.

-- 1. Drop old per-user Gitea columns from user_stacks
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_container_id;
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_container_name;
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_host;
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_http_port;
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_ssh_port;
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_admin_user;
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_admin_token;
ALTER TABLE user_stacks DROP COLUMN IF EXISTS gitea_memory_repo;

-- 2. Add central Gitea repo fields
ALTER TABLE user_stacks ADD COLUMN IF NOT EXISTS gitea_repo_name TEXT;
ALTER TABLE user_stacks ADD COLUMN IF NOT EXISTS gitea_repo_owner TEXT;

-- 3. Add version tracking columns (changes.md §9)
ALTER TABLE user_stacks ADD COLUMN IF NOT EXISTS image_version TEXT;
ALTER TABLE user_stacks ADD COLUMN IF NOT EXISTS migration_version TEXT;
ALTER TABLE user_stacks ADD COLUMN IF NOT EXISTS prompt_version TEXT;

-- 4. Simplify actors table for unified model
ALTER TABLE actors DROP COLUMN IF EXISTS sub_type;
ALTER TABLE actors DROP COLUMN IF EXISTS channel_id;
ALTER TABLE actors DROP COLUMN IF EXISTS parent_actor_id;
-- Change kind enum: was ('grow','sub'), now ('user')
-- Note: Drizzle handles enum changes via application-level migration.
-- The application code now only uses kind='user'.
-- Existing rows with kind='grow' or 'sub' will be left as-is (backward compatible reads).