refactor: improve Minecraft automation scripts

Standardize shebang to #!/usr/bin/env bash
Add descriptive headers to all scripts
Make all scripts executable

Consistent with Unix best practices:
- Portable shebang usage
- Self-documenting code
- Proper file permissions

minecraft/src/automatic/deploy.sh

@@ -1,4 +1,6 @@
-#!/bin/bash
+#!/usr/bin/env bash
+# Minecraft server automated deployment
+# Deploys mods and configuration to server directory
 
 # 加载日志模块
 source "$(dirname "$0")/logger.sh"

minecraft/src/automatic/download-mods.sh

@@ -1,4 +1,6 @@
-#!/bin/bash
+#!/usr/bin/env bash
+# Download Minecraft mods from Modrinth
+# Uses requirements.txt to specify mods
 
 # 加载日志模块
 source "$(dirname "$0")/logger.sh"

minecraft/src/automatic/logger.sh

@@ -1,4 +1,6 @@
-#!/bin/bash
+#!/usr/bin/env bash
+# Logger utility for Minecraft automation scripts
+# Provides consistent logging across all scripts
 
 LOG_FILE="./logs/mod-install-log.txt"
 mkdir -p "$(dirname "$LOG_FILE")"