Add image adjustments pipeline (brightness, contrast, crop, effects)

pixstrip-gtk/src/app.rs

@@ -1163,6 +1163,34 @@ fn run_processing(_window: &adw::ApplicationWindow, ui: &WizardUi) {
         _ => pixstrip_core::operations::Flip::None,
     });
 
+    // Adjustments
+    {
+        let crop = match cfg.crop_aspect_ratio {
+            1 => Some((1.0, 1.0)),
+            2 => Some((4.0, 3.0)),
+            3 => Some((3.0, 2.0)),
+            4 => Some((16.0, 9.0)),
+            5 => Some((9.0, 16.0)),
+            6 => Some((3.0, 4.0)),
+            7 => Some((2.0, 3.0)),
+            _ => None,
+        };
+        let adj = pixstrip_core::operations::AdjustmentsConfig {
+            brightness: cfg.brightness,
+            contrast: cfg.contrast,
+            saturation: cfg.saturation,
+            sharpen: cfg.sharpen,
+            grayscale: cfg.grayscale,
+            sepia: cfg.sepia,
+            crop_aspect_ratio: crop,
+            trim_whitespace: cfg.trim_whitespace,
+            canvas_padding: cfg.canvas_padding,
+        };
+        if !adj.is_noop() {
+            job.adjustments = Some(adj);
+        }
+    }
+
     // Watermark
     if cfg.watermark_enabled {
         let position = match cfg.watermark_position {