Foundation: config, schema/migrations, auth, stable IDs, metadata probing

migrations/migrations.go

@@ -0,0 +1,9 @@
+// Package migrations embeds VibeSonic's SQL schema migrations so
+// internal/database can apply them without relying on files being present
+// on disk at runtime.
+package migrations
+
+import "embed"
+
+//go:embed *.sql
+var FS embed.FS