feat(patterns): merge pattern styles and add mode support

Consolidate legacy pattern ids into meteor, particles, sparkle, chase,
and colour_cycle with n6/mode style selection; add pattern_modes helper,
self-contained tests/all.py, and preset mode alias on wire.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/main.py

@@ -1,6 +1,6 @@
+import print_timestamp  # noqa: F401 — prefixes every print with [ticks_ms]
 from settings import Settings
 import machine
-import network
 import utime
 import asyncio
 import json
@@ -10,8 +10,9 @@ from microdot.websocket import WebSocketError, with_websocket
 from presets import Presets
 from controller_messages import apply_startup_pattern, process_data
 from runtime_state import RuntimeState
-from background_tasks import udp_hello_loop_after_http_ready
-from wifi_sta import connect_until_up
+from background_tasks import presets_loop, udp_hello_loop_after_http_ready
+from mem_stats import print_mem
+from wifi_sta import boot_sta
 try:
     import uos as os
 except ImportError:
@@ -25,9 +26,8 @@ machine.freq(160000000)
 
 settings = Settings()
 
-
-
 gc.collect()
+sta_if = boot_sta(settings, wdt)
 
 presets = Presets(settings["led_pin"], settings["num_leds"])
 presets.load(settings)
@@ -37,21 +37,6 @@ gc.collect()
 
 apply_startup_pattern(settings, presets)
 
-# On ESP32-C3, soft reboots can leave Wi-Fi driver state allocated.
-# Reset both interfaces and collect before bringing STA up.
-ap_if = network.WLAN(network.AP_IF)
-ap_if.active(False)
-sta_if = network.WLAN(network.STA_IF)
-if sta_if.active():
-    sta_if.active(False)
-utime.sleep_ms(100)
-gc.collect()
-sta_if.active(True)
-sta_if.config(pm=network.WLAN.PM_NONE)
-_boot_ssid = settings.get("ssid") or ""
-if _boot_ssid:
-    connect_until_up(sta_if, _boot_ssid, settings.get("password") or "", wdt)
-
 
 def _print_network_ips(controller_ip=None):
     """Always log STA address and led-controller (WS client) address when known."""
@@ -64,6 +49,7 @@ def _print_network_ips(controller_ip=None):
 
 
 _print_network_ips()
+print_mem("startup")
 
 runtime_state = RuntimeState()
 
@@ -94,6 +80,7 @@ async def ws_handler(request, ws):
     except Exception:
         controller_ip = None
     _print_network_ips(controller_ip)
+    print_mem("ws connect")
     try:
         while True:
             data = await ws.receive()
@@ -167,16 +154,8 @@ async def upload_pattern(request):
     }), 201, {"Content-Type": "application/json"}
 
 
-async def presets_loop():
-    last_mem_log = utime.ticks_ms()
-    while True:
-        presets.tick()
-        wdt.feed()
-        await asyncio.sleep(0)
-
-
 async def main(port=80):
-    asyncio.create_task(presets_loop())
+    asyncio.create_task(presets_loop(presets, wdt))
     asyncio.create_task(
         udp_hello_loop_after_http_ready(sta_if, settings, wdt, runtime_state)
     )