Harden HID, Wi-Fi, and web server handling

hid.py

@@ -47,6 +47,7 @@ CONFIG_DESCRIPTOR = bytes((
 STRINGS = [None, "PolterHID", "Awareness trainer", "PHID-001"]
 _GET_DESCRIPTOR = 0x06
 _DESCRIPTOR_TYPE_REPORT = 0x22
+_MAX_PENDING_REPORTS = 8
 _INSTANCE = None
 
 
@@ -117,6 +118,16 @@ class HID:
             self._busy = False
 
     def _send(self, report):
+        if not self._ready:
+            return
+        report_id = report[0]
+        for index, pending in enumerate(self._pending):
+            if pending[0] == report_id:
+                self._pending[index] = report
+                self._flush()
+                return
+        if len(self._pending) >= _MAX_PENDING_REPORTS:
+            self._pending.pop(0)
         self._pending.append(report)
         self._flush()