feat: device model, API, static UI, and endpoint tests

Made-with: Cursor

src/models/device.py

@@ -0,0 +1,54 @@
+from models.model import Model
+
+
+def _normalize_address(addr):
+    """Normalize 6-byte ESP32 address to 12-char lowercase hex (no colons)."""
+    if addr is None:
+        return None
+    s = str(addr).strip().lower().replace(":", "").replace("-", "")
+    if len(s) == 12 and all(c in "0123456789abcdef" for c in s):
+        return s
+    return None
+
+
+class Device(Model):
+    def __init__(self):
+        super().__init__()
+
+    def create(self, name="", address=None, default_pattern=None, tabs=None):
+        next_id = self.get_next_id()
+        addr = _normalize_address(address)
+        self[next_id] = {
+            "name": name,
+            "address": addr,
+            "default_pattern": default_pattern if default_pattern else None,
+            "tabs": list(tabs) if tabs else [],
+        }
+        self.save()
+        return next_id
+
+    def read(self, id):
+        id_str = str(id)
+        return self.get(id_str, None)
+
+    def update(self, id, data):
+        id_str = str(id)
+        if id_str not in self:
+            return False
+        if "address" in data and data["address"] is not None:
+            data = dict(data)
+            data["address"] = _normalize_address(data["address"])
+        self[id_str].update(data)
+        self.save()
+        return True
+
+    def delete(self, id):
+        id_str = str(id)
+        if id_str not in self:
+            return False
+        self.pop(id_str)
+        self.save()
+        return True
+
+    def list(self):
+        return list(self.keys())