finish world initialization, set up init on startup and on shutdown, move all models to main directory

db/migrations/000001_create_setup.up.sql

@@ -301,9 +301,8 @@ CREATE TABLE IF NOT EXISTS language (
 );
 
 CREATE TABLE IF NOT EXISTS pack (
-    id INTEGER PRIMARY KEY,
+    id TEXT PRIMARY KEY,
 
-    key_ VARCHAR(128) NOT NULL,
     name VARCHAR(128) NOT NULL,
     label VARCHAR(128) NOT NULL,
     banner VARCHAR(128) NOT NULL,
@@ -324,7 +323,7 @@ CREATE TABLE IF NOT EXISTS ownership (
     trusted VARCHAR(128) NOT NULL,
     assistant VARCHAR(128) NOT NULL,
 
-    pack_id INTEGER UNIQUE,
+    pack_id TEXT,
     FOREIGN KEY (pack_id) REFERENCES pack(id) ON DELETE CASCADE
 );
 
@@ -334,12 +333,29 @@ CREATE TABLE IF NOT EXISTS index_ (
     folder VARCHAR(128) NOT NULL,
     img VARCHAR(128) NOT NULL,
     name VARCHAR(128) NOT NULL,
-    type VARCHAR(128) NOT NULL,
+    type VARCHAR(128) NOT NULL
+);
 
-    pack_id INTEGER,
+CREATE TABLE IF NOT EXISTS pack_to_index (
+    pack_id TEXT,
+    index_id TEXT,
+    
+    PRIMARY KEY (pack_id, index_id),
+    FOREIGN KEY (index_id) REFERENCES index_(id) ON DELETE CASCADE,
     FOREIGN KEY (pack_id) REFERENCES pack(id) ON DELETE CASCADE
 );
 
+CREATE INDEX idx_pack_to_index_index_id ON pack_to_index(index_id);
+
+CREATE TRIGGER tr_delete_pack_to_index_index
+AFTER DELETE ON pack_to_index
+FOR EACH ROW
+BEGIN
+    DELETE FROM index_ 
+    WHERE id = OLD.index_id 
+    AND NOT EXISTS (SELECT 1 FROM pack_to_index WHERE index_id = OLD.index_id);
+END;
+
 CREATE TABLE IF NOT EXISTS pack_folder (
     id TEXT PRIMARY KEY,
 
@@ -349,7 +365,7 @@ CREATE TABLE IF NOT EXISTS pack_folder (
     type VARCHAR(128) NOT NULL,
     sort INTEGER NOT NULL,
 
-    pack_id INTEGER,
+    pack_id TEXT,
     FOREIGN KEY (pack_id) REFERENCES pack(id) ON DELETE CASCADE
 );
 
@@ -406,15 +422,6 @@ CREATE TABLE IF NOT EXISTS package_warnings_to_data (
     FOREIGN KEY (package_warnings_data_id) REFERENCES package_warnings_data(id) ON DELETE CASCADE
 );
 
-CREATE TRIGGER tr_delete_package_warnings_to_data_package_warnings_data
-AFTER DELETE ON package_warnings_to_data
-FOR EACH ROW
-BEGIN
-    DELETE FROM package_warnings_data 
-    WHERE id = OLD.id 
-    AND NOT EXISTS (SELECT 1 FROM package_warnings_to_data WHERE package_warnings_data_id = OLD.package_warnings_data_id);
-END;
-
 CREATE TABLE IF NOT EXISTS package_warnings_data (
     id TEXT PRIMARY KEY,
 
@@ -423,6 +430,17 @@ CREATE TABLE IF NOT EXISTS package_warnings_data (
     reinstallable BOOLEAN NOT NULL
 );
 
+CREATE INDEX idx_package_warnings_to_data_package_warnings_data_id ON package_warnings_to_data(package_warnings_data_id);
+
+CREATE TRIGGER tr_delete_package_warnings_to_data_package_warnings_data
+AFTER DELETE ON package_warnings_to_data
+FOR EACH ROW
+BEGIN
+    DELETE FROM package_warnings_data 
+    WHERE id = OLD.package_warnings_data_id 
+    AND NOT EXISTS (SELECT 1 FROM package_warnings_to_data WHERE package_warnings_data_id = OLD.package_warnings_data_id);
+END;
+
 CREATE TABLE IF NOT EXISTS package_warnings_data_warning (
     id INTEGER PRIMARY KEY,