Generated configs out of the repo: *.example.* templates only; configure.py refuses to apply over CHANGEME placeholders

A deploy copied mediamtx.yml (template) over the server's generated file and the next apply
wiped all streamers. Generated files are now gitignored so scp -r cannot clobber them.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

.gitignore

@@ -5,3 +5,8 @@ __pycache__/
 bot/app/__pycache__/
 *.pyc
 streamers.json
+# generated by configure.py on the server — never commit or scp these
+mediamtx.yml
+copyparty.conf
+Caddyfile
+dump-users.txt