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/blink.py

@@ -12,10 +12,15 @@ def main():
 
     p = Patterns(pin=pin, num_leds=num)
     wdt = WDT(timeout=10000)
-    p.set_param("br", 64)
-    p.set_param("dl", 200)
-    p.set_param("cl", [(255, 0, 0), (0, 0, 255)])
-    p.select("blink")
+    
+    # Create blink preset
+    p.add("test_blink", {
+        "pattern": "blink",
+        "brightness": 64,
+        "delay": 200,
+        "colors": [(255, 0, 0), (0, 0, 255)]
+    })
+    p.select("test_blink")
 
     start = utime.ticks_ms()
     while utime.ticks_diff(utime.ticks_ms(), start) < 1500: