Address code review feedback and fix security issues

Co-authored-by: kuhyx <147418882+kuhyx@users.noreply.github.com>

.github/workflows/go.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [ "main" ]
 
+permissions:
+  contents: read
+
 jobs:
   build:
     runs-on: ubuntu-latest

main.go

@@ -162,6 +162,8 @@ type SendMessageRequest struct {
 }
 
 // Command triggers
+// These include various Unicode variants for compatibility with different input methods
+// and to match the original Python implementation's command variations
 var catCommands = []string{"!kot", "!koty", "!kots", "!cat", "!cats", "!meow", "!miau", "!ᴋᴏᴛ", "!𝓴𝓸𝓽", "!𝗸𝗼𝘁"}
 var dogCommands = []string{"!pies", "!psy", "!dog", "!dogs", "!woof", "!szczek", "!𝗽𝗶𝗲𝘀", "!͓̽p͓̽i͓̽e͓̽s͓̽"}
 

run_go.sh

@@ -2,7 +2,10 @@
 
 # Build and run the Go version of Signal Bot
 # First, build the application
-go build -o signal-bot main.go
+if ! go build -o signal-bot main.go; then
+    echo "Build failed"
+    exit 1
+fi
 
 # Run the application
 ./signal-bot