Rewrite entire project for v1.0.0

- Remove legacy code and replace with new implementation
- Update version to 1.0.0
- Adjust build configurations and dependencies.

gradle.properties

@@ -2,16 +2,19 @@
 org.gradle.jvmargs=-Xmx1G
 org.gradle.parallel=true
 
-# Fabric Properties
-# check these on https://fabricmc.net/develop
-minecraft_version=1.21.4
-yarn_mappings=1.21.4+build.8
-loader_version=0.16.9
+# Directory path containing version-specific properties files for Minecraft
+version_properties_path=./properties
 
 # Mod Properties
-mod_version=0.21.0
+mod_version=1.0.0
 maven_group=cn.revaria.chatplus
 archives_base_name=chat-plus
 
+# Minecraft
+minecraft_version=1.21
+
+# Override Fabric API version for local testing (runClient/runServer)
+#test_fabric_api_version=
+
 # Dependencies
-fabric_version=0.115.0+1.21.4
+manifold_version=2025.1.9