Technician tool v0.6

Imported from the Google Drive folder 004-technician_tool/v0.6.

kota_tech/diag/engine.py

@@ -280,6 +280,7 @@ class DiagnosticsEngine:
         self._panic_tail = 0     # RAW lines after a panic line to keep
         self.technician: list[str] = []
         self.mac: str | None = None      # from "ID: Device MAC address: ..." at boot
+        self.matter_advert: str | None = None   # "Advertise commission parameter vendorID=..." line
 
     @property
     def boot(self) -> BootRecord:
@@ -321,6 +322,8 @@ class DiagnosticsEngine:
         self.firmware.observe(text)
         if m := _MAC_LINE.search(text):
             self.mac = m.group(1).upper()
+        if "Advertise commission parameter" in text:
+            self.matter_advert = text
         matched = False
         for rule in self.rules:
             m = rule.pattern.search(text)