diff --git a/cmd/entire/cli/agent/opencode/hooks.go b/cmd/entire/cli/agent/opencode/hooks.go
index 35b8ed459..02b2f7cb7 100644
--- a/cmd/entire/cli/agent/opencode/hooks.go
+++ b/cmd/entire/cli/agent/opencode/hooks.go
@@ -40,23 +40,14 @@ func getPluginPath(ctx context.Context) (string, error) {
 }
 
 // InstallHooks writes the Entire plugin file to .opencode/plugins/entire.ts.
-// Returns 1 if the plugin was installed, 0 if already present (idempotent).
+// Returns 1 if the plugin was written, 0 if already up-to-date (idempotent).
+// If the file exists but content differs (e.g., localDev vs production), it is rewritten.
 func (a *OpenCodeAgent) InstallHooks(ctx context.Context, localDev bool, force bool) (int, error) {
 	pluginPath, err := getPluginPath(ctx)
 	if err != nil {
 		return 0, err
 	}
 
-	// Check if already installed (idempotent) unless force
-	if !force {
-		if _, err := os.Stat(pluginPath); err == nil {
-			data, readErr := os.ReadFile(pluginPath) //nolint:gosec // Path constructed from repo root
-			if readErr == nil && strings.Contains(string(data), entireMarker) {
-				return 0, nil // Already installed
-			}
-		}
-	}
-
 	// Build the command prefix
 	var cmdPrefix string
 	if localDev {
@@ -68,6 +59,15 @@ func (a *OpenCodeAgent) InstallHooks(ctx context.Context, localDev bool, force b
 	// Generate plugin content from template
 	content := strings.ReplaceAll(pluginTemplate, entireCmdPlaceholder, cmdPrefix)
 
+	// Check if already installed with identical content (idempotent) unless force
+	if !force {
+		if existing, readErr := os.ReadFile(pluginPath); readErr == nil { //nolint:gosec // Path constructed from repo root
+			if string(existing) == content {
+				return 0, nil // Already up-to-date
+			}
+		}
+	}
+
 	// Ensure directory exists
 	pluginDir := filepath.Dir(pluginPath)
 	//nolint:gosec // G301: Plugin directory needs standard permissions
diff --git a/cmd/entire/cli/agent/opencode/hooks_test.go b/cmd/entire/cli/agent/opencode/hooks_test.go
index 744714b26..a5c717cb5 100644
--- a/cmd/entire/cli/agent/opencode/hooks_test.go
+++ b/cmd/entire/cli/agent/opencode/hooks_test.go
@@ -121,6 +121,50 @@ func TestInstallHooks_ForceReinstall(t *testing.T) {
 	}
 }
 
+func TestInstallHooks_RewritesWhenContentDiffers(t *testing.T) {
+	dir := t.TempDir()
+	t.Chdir(dir)
+	ag := &OpenCodeAgent{}
+
+	// Install with localDev=true
+	count, err := ag.InstallHooks(context.Background(), true, false)
+	if err != nil {
+		t.Fatalf("first install failed: %v", err)
+	}
+	if count != 1 {
+		t.Errorf("first install: expected 1, got %d", count)
+	}
+
+	pluginPath := filepath.Join(dir, ".opencode", "plugins", "entire.ts")
+	before, err := os.ReadFile(pluginPath)
+	if err != nil {
+		t.Fatalf("failed to read plugin file: %v", err)
+	}
+	if !strings.Contains(string(before), "go run") {
+		t.Fatal("expected localDev content with 'go run'")
+	}
+
+	// Reinstall with localDev=false (content differs) — should rewrite
+	count, err = ag.InstallHooks(context.Background(), false, false)
+	if err != nil {
+		t.Fatalf("second install failed: %v", err)
+	}
+	if count != 1 {
+		t.Errorf("second install with different content: expected 1, got %d", count)
+	}
+
+	after, err := os.ReadFile(pluginPath)
+	if err != nil {
+		t.Fatalf("failed to read plugin file after rewrite: %v", err)
+	}
+	if strings.Contains(string(after), "go run") {
+		t.Error("expected production content after rewrite, but still contains 'go run'")
+	}
+	if !strings.Contains(string(after), `const ENTIRE_CMD = 'entire'`) {
+		t.Error("expected production command constant after rewrite")
+	}
+}
+
 func TestUninstallHooks(t *testing.T) {
 	dir := t.TempDir()
 	t.Chdir(dir)