Ignore roll for face orientation filtering.

frontend/src/lib/components/SettingsPanel.svelte

@@ -312,21 +312,6 @@
                     </div>
                   </div>
 
-                  <div class="setting-row sub-setting">
-                    <label>
-                      <span class="setting-label">Max Roll</span>
-                      <span class="setting-hint">Maximum head tilt angle</span>
-                    </label>
-                    <div class="setting-control">
-                      <input
-                        type="range"
-                        bind:value={config.processing.head_pose.max_roll}
-                        min="5"
-                        max="90"
-                        step="5"
-                      />
-                      <span class="value">{config.processing.head_pose.max_roll.toFixed(0)}°</span>
-                    </div>
                   </div>
                 {/if}
               </div>

src/config.rs

@@ -641,12 +641,13 @@ mod tests {
 
     #[test]
     fn test_brightness_validation() {
-        let mut config = BrightnessConfig::default();
-        config.enabled = true;
+        let mut config = BrightnessConfig {
+            enabled: true,
+            min_brightness: 0.1,
+            max_brightness: 0.9,
+        };
 
         // Valid config
-        config.min_brightness = 0.1;
-        config.max_brightness = 0.9;
         assert!(config.validate().is_ok());
 
         // Invalid: min >= max

src/models/dmhead.rs

@@ -161,8 +161,8 @@ mod tests {
     fn test_input_format() {
         // DMHead expects raw [0, 255] pixel values as floats, no normalization
         // See: https://github.com/PINTO0309/DMHead/blob/main/demo_video.py
-        assert_eq!(0_u8 as f32, 0.0);
-        assert_eq!(255_u8 as f32, 255.0);
-        assert_eq!(128_u8 as f32, 128.0);
+        assert_eq!(0_f32, 0.0);
+        assert_eq!(255_f32, 255.0);
+        assert_eq!(128_f32, 128.0);
     }
 }

src/pipeline/steps/head_pose.rs

@@ -286,16 +286,9 @@ impl ProcessingStep for HeadPoseStep {
             };
         }
 
-        if pose.roll.abs() > head_pose_config.max_roll {
-            return StepOutcome::Skip {
-                ctx,
-                reason: "head_turned".to_string(),
-                detail: Some(format!(
-                    "Roll {:.1}° exceeds threshold {:.1}°",
-                    pose.roll, head_pose_config.max_roll
-                )),
-            };
-        }
+        // Note: Roll is not checked for pass/fail - only used for visualization
+        // Roll (head tilt) is less important for timelapse alignment since
+        // the alignment step can handle rotated faces
 
         StepOutcome::Continue(ctx)
     }