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

make-netbsd.mk

@@ -39,21 +39,21 @@ CXXFLAGS+=$(CFLAGS) -fno-rtti -fpermissive
 all:	one
 
 one:	$(OBJS) service/OneService.o one.o
-	$(CXX) $(CXXFLAGS) $(LDFLAGS)  -o zerotier-one $(OBJS) service/OneService.o one.o $(LIBS)
-	$(STRIP) zerotier-one
-	ln -sf zerotier-one zerotier-idtool
-	ln -sf zerotier-one zerotier-cli
+	$(CXX) $(CXXFLAGS) $(LDFLAGS)  -o backone $(OBJS) service/OneService.o one.o $(LIBS)
+	$(STRIP) backone
+	ln -sf backone backone-idtool
+	ln -sf backone backone-cli
 
 selftest:	$(OBJS) selftest.o
-	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o zerotier-selftest selftest.o $(OBJS) $(LIBS)
-	$(STRIP) zerotier-selftest
+	$(CXX) $(CXXFLAGS) $(LDFLAGS) -o backone-selftest selftest.o $(OBJS) $(LIBS)
+	$(STRIP) backone-selftest
 
 # No installer on FreeBSD yet
 #installer: one FORCE
 #	./buildinstaller.sh
 
 clean:
-	rm -rf *.o node/*.o controller/*.o osdep/*.o service/*.o ext/http-parser/*.o ext/lz4/*.o ext/json-parser/*.o build-* zerotier-one zerotier-idtool zerotier-selftest zerotier-cli ZeroTierOneInstaller-*
+	rm -rf *.o node/*.o controller/*.o osdep/*.o service/*.o ext/http-parser/*.o ext/lz4/*.o ext/json-parser/*.o build-* backone backone-idtool backone-selftest backone-cli ZeroTierOneInstaller-*
 
 debug:	FORCE
 	make -j 4 ZT_DEBUG=1