Refactor patterns to use preset-based API and fix initialization order

- Fix initialization order: initialize self.presets before calling self.select()
- Separate add() and edit() methods: add() creates new presets, edit() updates existing ones
- Update all test files to use add() instead of edit() for creating presets
- Add comprehensive auto/manual mode test
- Remove tool.py (moved to led-tool project)

test/patterns/on.py

@@ -12,12 +12,18 @@ def main():
 
     p = Patterns(pin=pin, num_leds=num)
     wdt = WDT(timeout=10000)
-    p.set_param("br", 64)
-    p.set_param("dl", 120)
-    p.set_param("cl", [(255, 0, 0), (0, 0, 255)])
+    
+    # Create presets for on and off
+    p.add("test_on", {
+        "pattern": "on",
+        "brightness": 64,
+        "delay": 120,
+        "colors": [(255, 0, 0), (0, 0, 255)]
+    })
+    p.add("test_off", {"pattern": "off"})
 
     # ON phase
-    p.select("on")
+    p.select("test_on")
     start = utime.ticks_ms()
     while utime.ticks_diff(utime.ticks_ms(), start) < 800:
         wdt.feed()
@@ -25,7 +31,7 @@ def main():
         utime.sleep_ms(10)
 
     # OFF phase
-    p.select("off")
+    p.select("test_off")
     start = utime.ticks_ms()
     while utime.ticks_diff(utime.ticks_ms(), start) < 100:
         wdt.feed()