fix

engine/src/parser/pdfium_page.cpp

@@ -154,24 +154,6 @@ std::expected<PageImage, EngineError> PdfiumPage::renderRegionRaw(int dpi, doubl
         }
     }
 
-    spdlog::error("[RENDER_REGION_RAW_INSTRUMENTATION] 1. Region width: {}, height: {} (dpi: {}, yTopPt: {:.2f}, heightPt: {:.2f}, pagePt: {:.2f}x{:.2f})",
-                  w, regionH, dpi, yTopPt, heightPt, width(), height());
-    spdlog::error("[RENDER_REGION_RAW_INSTRUMENTATION] 2. Initialized with opaque white fill (0xFFFFFFFF): TRUE (via FPDFBitmap_FillRect)");
-    spdlog::error("[RENDER_REGION_RAW_INSTRUMENTATION] 3. Content scope: Entire page vertical slice from yTopPx={} to yTopPx+regionH={} (renders ALL page objects in slice, not just edited paragraph)",
-                  yTopPx, yTopPx + regionH);
-    spdlog::error("[RENDER_REGION_RAW_INSTRUMENTATION] 4. Alpha transparency check: allAlpha255={}, non255Count={}",
-                  allAlpha255 ? "TRUE (100% opaque, alpha=255 everywhere)" : "FALSE", non255Count);
-
-    std::vector<uint8_t> pngBytes = encodeBgraToPng(bgra, w, regionH, stride);
-    if (!pngBytes.empty()) {
-        FILE* f = fopen("debug_preview_region.png", "wb");
-        if (f) {
-            fwrite(pngBytes.data(), 1, pngBytes.size(), f);
-            fclose(f);
-            spdlog::error("[RENDER_REGION_RAW_INSTRUMENTATION] Saved preview bitmap to debug_preview_region.png (size: {} bytes)", pngBytes.size());
-        }
-    }
-
     FPDFBitmap_Destroy(bitmap);
     return PageImage{w, regionH, std::move(rgba)};
 #else

frontend/src/lib/gatewayService.ts

@@ -48,6 +48,7 @@ export interface RenderParams {
   pageIndex: number;
   zoom: number;
   rotation: number;
+  dpi?: number;
 }
 
 export interface Annotation {

frontend/src/viewer/ParagraphEditor.tsx

@@ -386,10 +386,7 @@ function sanitizeEngineLayout(
   return lay;
 }
 
-function globalCaretOffset(el: HTMLElement, caretRefVal?: number): number {
-  if (typeof caretRefVal === 'number') return caretRefVal;
-  return (el.textContent ?? '').length;
-}
+
 
 /** Live caret index inside a contentEditable — matches setGlobalCaretOffset / textContent indexing. */
 function getDomCaretOffset(el: HTMLElement): number | null {
@@ -574,7 +571,6 @@ export const ParagraphEditor: React.FC<ParagraphEditorProps> = ({
   const [hasPreview, setHasPreview] = useState(false);
   const [caretBox, setCaretBox] = useState<{ left: number; top: number; height: number } | null>(null);
   const [edited, setEdited] = useState(false);
-  const [wasmFailed, setWasmFailed] = useState(false);
   const [listKind, setListKind] = useState<ListKind | null>(null);
   const [indentLevel, setIndentLevel] = useState(0);
   const INDENT_STEP = 18; // pt per nesting level (whole-block indent; per-item nesting is a known limit)
@@ -606,8 +602,10 @@ export const ParagraphEditor: React.FC<ParagraphEditorProps> = ({
     }
     const lineH = (para?.lines ?? []).reduce((m: number, ln: any) => Math.max(m, ln?.h ?? 0), 0);
     if (!isFinite(minX)) {
-      return { x: layout.columnLeft, y: bl - domSize * 0.8, w: Math.max(0, columnRight - layout.columnLeft),
-        h: lineH || domSize * 1.2, ascent: domSize * 0.8, descent: domSize * 0.2, lineHeight: lineH || domSize * 1.2 };
+      return {
+        x: layout.columnLeft, y: bl - domSize * 0.8, w: Math.max(0, columnRight - layout.columnLeft),
+        h: lineH || domSize * 1.2, ascent: domSize * 0.8, descent: domSize * 0.2, lineHeight: lineH || domSize * 1.2
+      };
     }
     return {
       x: minX, y: minY, w: maxX - minX, h: maxY - minY,
@@ -628,7 +626,6 @@ export const ParagraphEditor: React.FC<ParagraphEditorProps> = ({
   const bandTop = Math.max(0, Math.min(editorTop - leadingPx * 0.5, firstBaselineScreen - fontPx * 1.15));
   // Keep column metrics for reflow payload / toolbar (editing column can be wider than ink bbox).
   const colLeftPx = columnLeft * zoom;
-  const colWidthPx = (columnRight - columnLeft) * zoom;
 
   // Fix 1: use extracted PDF font name (loaded via @font-face), not a generic Arial/Times/Courier map.
   const extractedFamily = (domFontName || '').replace(/^[A-Z]{6}\+/, '').trim() || 'sans-serif';
@@ -966,8 +963,8 @@ export const ParagraphEditor: React.FC<ParagraphEditorProps> = ({
     // Preserve PDF hard line breaks (not a single CSS-wrapped flow).
     const lineFrags = layout.origLines.length
       ? layout.origLines.map((l) => l.frags.map((f) => ({
-          text: f.text, fid: f.fid, size: f.size, color: f.color, fontName: domFontName, advances: f.advances,
-        })))
+        text: f.text, fid: f.fid, size: f.size, color: f.color, fontName: domFontName, advances: f.advances,
+      })))
       : [layout.seedRuns];
     lineFrags.forEach((frags, li) => {
       if (li > 0) el.appendChild(document.createElement('br'));
@@ -1165,12 +1162,7 @@ export const ParagraphEditor: React.FC<ParagraphEditorProps> = ({
     });
   }, [fallbackVisible]);
 
-  // Diagnostics only — does not drive a visible HTML fallback.
-  useEffect(() => {
-    if (hasPreview) return;
-    const t = window.setTimeout(() => setWasmFailed(true), 4000);
-    return () => window.clearTimeout(t);
-  }, [hasPreview]);
+
 
   const composingRef = useRef(false);
   const ignoreInputUntilRef = useRef(Date.now() + 150);