feat: recursively scan through directory, refactor library and import functions, add more basic information to schema

migrations/2026-10-23-174301-0000_create_artists_collections_tracks/up.sql

@@ -1,19 +1,26 @@
 CREATE TABLE artists (
     id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
     original_name TEXT NOT NULL,
-    display_name TEXT NOT NULL
+    display_name TEXT NOT NULL,
+    UNIQUE (original_name)
 );
 
 CREATE TABLE collections (
     id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
+    artist_id INTEGER,
     collection_type TEXT NOT NULL,
     original_name TEXT NOT NULL,
-    display_name TEXT NOT NULL
+    display_name TEXT NOT NULL,
+    UNIQUE (original_name),
+    CONSTRAINT fk_collections_artist
+        FOREIGN KEY (artist_id)
+        REFERENCES artists (id)
 );
 
 CREATE TABLE tracks (
     id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,
-    artist_id INTEGER NOT NULL,
+    file_path TEXT NOT NULL,
+    artist_id INTEGER,
     collection_id INTEGER,
     original_title TEXT,
     display_title TEXT,