refactor(timeline-editor): complete variable unit renames in modules

- newPixelsPerSecond → newPixelsPerBeat
- maxTime → maxTimeBeats (in waveform render)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/tools/timeline_editor/timeline-viewport.js b/tools/timeline_editor/timeline-viewport.js
index 30f2403..196368e 100644
--- a/tools/timeline_editor/timeline-viewport.js
+++ b/tools/timeline_editor/timeline-viewport.js
@@ -77,14 +77,14 @@ export class ViewportController {
         const timeUnderCursor = (scrollLeft + mouseX) / this.state.pixelsPerBeat;
 
         const zoomDelta = e.deltaY > 0 ? -10 : 10;
-        const newPixelsPerSecond = Math.max(10, Math.min(500, this.state.pixelsPerBeat + zoomDelta));
+        const newPixelsPerBeat = Math.max(10, Math.min(500, this.state.pixelsPerBeat + zoomDelta));
 
-        if (newPixelsPerSecond !== this.state.pixelsPerBeat) {
-            this.state.pixelsPerBeat = newPixelsPerSecond;
+        if (newPixelsPerBeat !== this.state.pixelsPerBeat) {
+            this.state.pixelsPerBeat = newPixelsPerBeat;
             this.dom.zoomSlider.value = this.state.pixelsPerBeat;
             this.dom.zoomLevel.textContent = `${this.state.pixelsPerBeat}%`;
             this.renderCallback('zoomWheel');
-            this.dom.timelineContent.scrollLeft = timeUnderCursor * newPixelsPerSecond - mouseX;
+            this.dom.timelineContent.scrollLeft = timeUnderCursor * newPixelsPerBeat - mouseX;
             this.updateIndicatorPosition(this.timeToBeats(this.state.playbackOffset), false);
         }
     }