Add format-on-save, health check system, and cursor visibility fix

[lecheel]

there is issue for the end newline all the time i've using 'go fmt ' every commit
what do you think still using memory cat %s | goimports or simple the process

Format on Save – automatically formats the current buffer when saving.
Health Check System – validates dependencies and environment, with a new CLI flag and editor command.
Cursor Visibility Fix – corrects the clamping logic for cursor positioning to ensure symmetric context.
Together, these changes enhance developer experience, improve reliability, and fix a subtle UI bug.

diff --git a/commands/commands.go b/commands/commands.go
index 8375c1a..9927b3a 100644
--- a/commands/commands.go
+++ b/commands/commands.go
@@ -274,20 +274,19 @@ func CmdCurrentBufferDirFilePicker(ctx wig.Context) {
 
 func CmdFormatBuffer(ctx wig.Context) {
     if strings.HasSuffix(ctx.Buf.FilePath, ".go") {
-        formatcmd := fmt.Sprintf("cat %s | goimports", ctx.Buf.FilePath)
-        cmd := exec.Command("bash", "-c", formatcmd)
-        stdout, err := cmd.Output()
+        var cmd *exec.Cmd
+        if _, err := exec.LookPath("goimports"); err == nil {
+            cmd = exec.Command("goimports", "-w", ctx.Buf.FilePath)
+        } else {
+            cmd = exec.Command("go", "fmt", ctx.Buf.FilePath)
+        }
+        stdout, err := cmd.CombinedOutput()
         if err != nil {
-            ctx.Editor.LogMessage(err.Error())
+            ctx.Editor.LogError(err)
             ctx.Editor.LogMessage(string(stdout))
             return
         }
-        // TODO: update only changed lines
-        ctx.Buf.ResetLines()
-        lines := strings.Split(string(stdout), "\n")
-        for _, line := range lines {
-            ctx.Buf.Append(line)
-        }
+        CmdReloadBuffer(ctx)
    }

[firstrow]

I can not find commands.PrintCLIHealth()

[lecheel]

[firstrow]

🤦 github decided to not load health.go diff. thanks!