First upload, 18 controller version

presets/afterhours-pulse.json

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+{
+  "name": "Afterhours Pulse",
+  "pattern_id": "center_pulse",
+  "parameters": {
+    "speed": 0.42,
+    "brightness": 1.0,
+    "fade": 0.28,
+    "level_mode": "smooth",
+    "direction": "left_to_right",
+    "checker_mode": "classic",
+    "diagonal_scan_mode": "line",
+    "strobe_mode": "global",
+    "stopwatch_mode": "sync",
+    "color_mode": "palette",
+    "primary_color": "#4D7CFF",
+    "secondary_color": "#0E1630",
+    "palette": "Afterhours",
+    "symmetry": "none",
+    "step_size": 1.0,
+    "block_size": 1.0,
+    "strobe_duty_cycle": 0.5,
+    "randomness": 0.35
+  },
+  "brightness": 1.0,
+  "palette": "Afterhours",
+  "created_at": "2026-03-22T19:54:13"
+}

presets/purple-center-pulse.json

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+{
+  "name": "Purple Center Pulse",
+  "pattern_id": "center_pulse",
+  "parameters": {
+    "brightness": 1.0,
+    "fade": 0.35,
+    "tempo_multiplier": 1.0,
+    "direction": "left_to_right",
+    "checker_mode": "classic",
+    "scan_style": "line",
+    "angle": 0,
+    "on_width": 1.0,
+    "off_width": 1.0,
+    "strobe_mode": "global",
+    "stopwatch_mode": "sync",
+    "color_mode": "dual",
+    "primary_color": "#55007f",
+    "secondary_color": "#000000",
+    "palette": "Laser Club",
+    "symmetry": "none",
+    "center_pulse_mode": "expand",
+    "block_size": 1.0,
+    "pixel_group_size": 1.0,
+    "strobe_duty_cycle": 0.5,
+    "randomness": 0.35
+  },
+  "brightness": 1.0,
+  "palette": "Laser Club",
+  "created_at": "2026-03-27T19:15:56",
+  "tempo_bpm": 120.0
+}