feat(mavlink): adopt the kaptan-native dialect

firmware/libs/kaptan-mavlink/definitions/publish/log.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0"?>
+<mavlink>
+  <version>3</version>
+  <dialect>0</dialect>
+  <enums>
+    <enum name="LOG_LEVEL">
+      <entry value="0" name="LOG_LEVEL_OFF">
+        <description>Filter-only sentinel. A LOG event must not use this value.</description>
+      </entry>
+      <entry value="1" name="LOG_LEVEL_TRACE"/>
+      <entry value="2" name="LOG_LEVEL_DEBUG"/>
+      <entry value="3" name="LOG_LEVEL_INFO"/>
+      <entry value="4" name="LOG_LEVEL_WARN"/>
+      <entry value="5" name="LOG_LEVEL_ERROR"/>
+    </enum>
+    <enum name="LOG_FLAGS" bitmask="true">
+      <entry value="1" name="LOG_FLAG_TRUNCATED">
+        <description>Message text was truncated to the bounded on-wire buffer.</description>
+      </entry>
+    </enum>
+  </enums>
+  <messages>
+    <message id="51020" name="LOG">
+      <description>Bounded human-readable runtime log emitted by every Kaptan logging macro, including error. The receiver needs only level, flags, and the valid UTF-8 text prefix. MAVLink framing, bounded admission, DMA, and retries remain platform-owned.</description>
+      <field type="uint8_t" name="level" enum="LOG_LEVEL">Kaptan wire level.</field>
+      <field type="uint8_t" name="flags" enum="LOG_FLAGS">TRUNCATED=1. Receivers ignore unrecognized bits.</field>
+      <field type="uint8_t" name="message_length">Number of valid UTF-8 bytes in message; at most 160.</field>
+      <field type="uint8_t[160]" name="message">Bounded UTF-8 message bytes. Bytes after message_length are zero.</field>
+    </message>
+  </messages>
+</mavlink>