chore: rebrand backone names, add lint gate + agent docs

- CI: build/validate use backone selftest + binary names, add lint.yml
- make-*.mk: emit/install backone binaries, drop zerotier-one paths
- doc/debian/ext.installfiles: backone manpages, service, init, te
- rule-compiler: npm test runs test.js; attic world planet files
- AGENTS.md repository guidelines, tools/lint.sh changed-lines gate
- gitignore: /backone-selftest, *.gcno, *.gcda

controller/Redis.hpp

@@ -5,10 +5,11 @@
 
 namespace ZeroTier {
 struct RedisConfig {
-    std::string hostname;
-    int port;
-    std::string password;
-    bool clusterMode;
+	std::string hostname;
+	int port;
+	std::string password;
+	bool clusterMode;
+	int db;
 };
 }