Initial Switch to V2. Completely Overhauled Backend, Frontend and General Structure.

backend/melodies/orm.py

@@ -0,0 +1,39 @@
+from datetime import datetime, timezone
+from sqlalchemy import Boolean, Column, DateTime, Index, String, Text
+from sqlalchemy.dialects.postgresql import JSONB
+from database.postgres import Base
+
+
+def _now():
+    return datetime.now(timezone.utc)
+
+
+class MelodyDraft(Base):
+    __tablename__ = "melody_drafts"
+    __table_args__ = (
+        Index("idx_melody_drafts_status", "status"),
+    )
+
+    id         = Column(String(128), primary_key=True)
+    status     = Column(String(32), nullable=False, default="draft")
+    # 'data' stores the full melody definition as JSON (was TEXT/JSON in SQLite)
+    data       = Column(JSONB, nullable=False)
+    created_at = Column(DateTime(timezone=True), nullable=False, default=_now)
+    updated_at = Column(DateTime(timezone=True), nullable=False, default=_now, onupdate=_now)
+
+
+class BuiltMelody(Base):
+    __tablename__ = "built_melodies"
+
+    id                  = Column(String(128), primary_key=True)
+    name                = Column(String(500), nullable=False)
+    pid                 = Column(String(128), nullable=False)
+    # 'steps' is a JSON array of step definitions
+    steps               = Column(JSONB, nullable=False)
+    binary_path         = Column(String(1000))
+    progmem_code        = Column(Text)
+    # JSON array of melody IDs this built melody is assigned to
+    assigned_melody_ids = Column(JSONB, nullable=False, default=list)
+    is_builtin          = Column(Boolean, nullable=False, default=False)
+    created_at          = Column(DateTime(timezone=True), nullable=False, default=_now)
+    updated_at          = Column(DateTime(timezone=True), nullable=False, default=_now, onupdate=_now)