Added SpeedCalc and MelodyBuilder. Evaluation Pending

backend/builder/models.py

@@ -0,0 +1,38 @@
+from pydantic import BaseModel
+from typing import List, Optional
+
+
+class BuiltMelodyCreate(BaseModel):
+    name: str
+    pid: str
+    steps: str  # raw step string e.g. "1,2,2+1,1,2,3+1"
+
+
+class BuiltMelodyUpdate(BaseModel):
+    name: Optional[str] = None
+    pid: Optional[str] = None
+    steps: Optional[str] = None
+
+
+class BuiltMelodyInDB(BaseModel):
+    id: str
+    name: str
+    pid: str
+    steps: str
+    binary_path: Optional[str] = None
+    binary_url: Optional[str] = None
+    progmem_code: Optional[str] = None
+    assigned_melody_ids: List[str] = []
+    created_at: str
+    updated_at: str
+
+    @property
+    def step_count(self) -> int:
+        if not self.steps:
+            return 0
+        return len(self.steps.split(","))
+
+
+class BuiltMelodyListResponse(BaseModel):
+    melodies: List[BuiltMelodyInDB]
+    total: int