Wire missing UI controls to job config

- Add adjustments_enabled field and guard rotation/flip/adjustments behind it
- Wire adjustments toggle in workflow step
- Wire progressive JPEG toggle in convert and compress steps
- Wire format mapping ComboRows (JPEG/PNG/WebP/TIFF) in convert step
- Wire AVIF quality, WebP effort, AVIF speed controls in compress step
- Initialize all new controls from current config values

pixstrip-gtk/src/steps/step_workflow.rs

@@ -69,7 +69,7 @@ pub fn build_workflow_page(state: &AppState) -> adw::NavigationPage {
     let adjustments_check = adw::SwitchRow::builder()
         .title("Adjustments")
         .subtitle("Rotate, flip, brightness, contrast, effects")
-        .active(false)
+        .active(state.job_config.borrow().adjustments_enabled)
         .build();
 
     let convert_check = adw::SwitchRow::builder()
@@ -117,6 +117,12 @@ pub fn build_workflow_page(state: &AppState) -> adw::NavigationPage {
             jc.borrow_mut().resize_enabled = row.is_active();
         });
     }
+    {
+        let jc = state.job_config.clone();
+        adjustments_check.connect_active_notify(move |row| {
+            jc.borrow_mut().adjustments_enabled = row.is_active();
+        });
+    }
     {
         let jc = state.job_config.clone();
         convert_check.connect_active_notify(move |row| {