core: add pre-commit hooks for go CI checks

core/README.md

@@ -72,6 +72,13 @@ sudo make install  # Install to /usr/local/bin/dms
 
 ## Development
 
+**Setup pre-commit hooks:**
+```bash
+git config core.hooksPath .githooks
+```
+
+This runs gofmt, golangci-lint, tests, and builds before each commit when `core/` files are staged.
+
 **Regenerating Wayland Protocol Bindings:**
 ```bash
 go install github.com/rajveermalviya/go-wayland/cmd/go-wayland-scanner@latest

core/internal/tui/views_selection.go

@@ -3,7 +3,6 @@ package tui
 import (
 	"context"
 	"fmt"
-	"os/exec"
 	"strings"
 
 	"github.com/AvengeMedia/DankMaterialShell/core/internal/deps"
@@ -179,11 +178,6 @@ func (m Model) updateSelectWindowManagerState(msg tea.Msg) (tea.Model, tea.Cmd)
 	return m, m.listenForLogs()
 }
 
-func (m Model) commandExists(cmd string) bool {
-	_, err := exec.LookPath(cmd)
-	return err == nil
-}
-
 func (m Model) detectDependencies() tea.Cmd {
 	return func() tea.Msg {
 		if m.osInfo == nil {