Pull WLED state from device; add Sunrise preset and presets docs

- wled_pull: update full.json, state.json, info.json from device
- Add wled_config/presets/sunrise.json (psave payload for preset 1)
- README: document defining and pushing presets

Made-with: Cursor

wled_config/full.json

@@ -1,9 +1,9 @@
 {
   "state": {
     "on": true,
-    "bri": 128,
+    "bri": 255,
     "transition": 0,
-    "ps": -1,
+    "ps": 1,
     "pl": -1,
     "ledmap": 0,
     "AudioReactive": {
@@ -104,7 +104,7 @@
     "liveseg": -1,
     "lm": "",
     "lip": "",
-    "ws": 3,
+    "ws": 4,
     "fxcount": 187,
     "palcount": 71,
     "cpalcount": 0,
@@ -115,15 +115,15 @@
     ],
     "wifi": {
       "bssid": "A4:A9:30:F9:4D:96",
-      "rssi": -42,
+      "rssi": -41,
       "signal": 100,
       "channel": 1,
       "ap": false
     },
     "fs": {
-      "u": 8,
+      "u": 12,
       "t": 983,
-      "pmt": 1772891797
+      "pmt": 1772989317
     },
     "ndc": 0,
     "arch": "esp32",
@@ -131,9 +131,9 @@
     "clock": 240,
     "flash": 4,
     "lwip": 0,
-    "freeheap": 166196,
-    "uptime": 97381,
-    "time": "2026-3-8, 16:54:44",
+    "freeheap": 165576,
+    "uptime": 97889,
+    "time": "2026-3-8, 17:03:11",
     "u": {
       "AudioReactive": [
         "<button class=\"btn btn-xs\" onclick=\"requestJson({AudioReactive:{enabled:false}});\"><i class=\"icons on\">&#xe08f;</i></button>"
@@ -143,13 +143,13 @@
       ],
       "Audio Source": [
         "I2S digital",
-        " - quiet"
+        " - peak  99%"
       ],
       "Sound Processing": [
         "running"
       ],
       "AGC Gain": [
-        12.87,
+        9.9,
         "x"
       ],
       "UDP Sound Sync": [