Update pattern tests for new preset-based API

- Replace add() calls with edit() for preset creation
- Update tests to work with merged patterns.py
- Ensure all tests use new Preset object structure

test/patterns/transition.py

@@ -24,7 +24,7 @@ def main():
 
     # Test 1: Simple two-color transition
     print("Test 1: Two-color transition (red <-> blue, delay=1000)")
-    p.add("transition1", {
+    p.edit("transition1", {
         "pattern": "transition",
         "brightness": 255,
         "delay": 1000,  # transition duration
@@ -36,7 +36,7 @@ def main():
 
     # Test 2: Multi-color transition
     print("Test 2: Multi-color transition (red -> green -> blue -> white)")
-    p.add("transition2", {
+    p.edit("transition2", {
         "pattern": "transition",
         "delay": 800,
         "colors": [(255, 0, 0), (0, 255, 0), (0, 0, 255), (255, 255, 255)],
@@ -47,7 +47,7 @@ def main():
 
     # Test 3: One-shot transition (auto=False)
     print("Test 3: One-shot transition (auto=False)")
-    p.add("transition3", {
+    p.edit("transition3", {
         "pattern": "transition",
         "delay": 1000,
         "colors": [(255, 0, 0), (0, 255, 0)],
@@ -59,7 +59,7 @@ def main():
 
     # Test 4: Single-color behavior (should just stay on)
     print("Test 4: Single-color transition (should hold color)")
-    p.add("transition4", {
+    p.edit("transition4", {
         "pattern": "transition",
         "colors": [(0, 0, 255)],
         "delay": 500,
@@ -70,7 +70,7 @@ def main():
 
     # Cleanup
     print("Test complete, turning off")
-    p.add("cleanup_off", {"pattern": "off"})
+    p.edit("cleanup_off", {"pattern": "off"})
     p.select("cleanup_off")
     run_for(p, wdt, 200)