feat(driver): add HTTP routes, startup split, and binary envelope support

Wire controller messages through new modules (background tasks, runtime state,
startup) and add binary envelope handling.

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

src/startup.py

@@ -0,0 +1,53 @@
+import gc
+import machine
+import network
+import utime
+
+from presets import Presets
+from settings import Settings
+
+
+def initialize_runtime():
+    machine.freq(160000000)
+
+    settings = Settings()
+    print(settings)
+
+    wdt = machine.WDT(timeout=10000)
+    wdt.feed()
+
+    gc.collect()
+    print("mem before presets:", {"free": gc.mem_free(), "alloc": gc.mem_alloc()})
+
+    presets = Presets(settings["led_pin"], settings["num_leds"])
+    presets.load(settings)
+    presets.b = settings.get("brightness", 255)
+    presets.debug = bool(settings.get("debug", False))
+    gc.collect()
+    print("mem after presets:", {"free": gc.mem_free(), "alloc": gc.mem_alloc()})
+
+    default_preset = settings.get("default", "")
+    if default_preset and default_preset in presets.presets:
+        if presets.select(default_preset):
+            print("Selected startup preset:", default_preset)
+        else:
+            print("Startup preset failed (invalid pattern?):", default_preset)
+
+    # 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)
+    sta_if.connect(settings["ssid"], settings["password"])
+    while not sta_if.isconnected():
+        utime.sleep(1)
+        wdt.feed()
+
+    print(sta_if.ifconfig())
+    return settings, presets, wdt, sta_if