Preserve editorial fingerings on MusicXML/PDF import, fix .xml drag-drop regex

frontend/src/components/Transport/SettingsPanel.tsx

@@ -1100,8 +1100,8 @@ export function SettingsPanel({ open, onClose }: { open: boolean; onClose: () =>
                   onClick={() => void generateFingering()}
                   disabled={isGeneratingFingering}
                   title={
-                    doc.fingeringVersion === "auto"
+                    doc.fingeringVersion !== "none"
-                      ? "Regenerate finger numbers using the Parncutt algorithm"
+                      ? "Refine finger numbers using the Parncutt algorithm. Existing fingerings are kept as anchors and the algorithm only fills in gaps - useful for editorial scores (e.g. Henle) where only hard passages are annotated."
                       : "Generate finger number hints using the Parncutt algorithm"
                   }
                   style={{
@@ -1121,7 +1121,7 @@ export function SettingsPanel({ open, onClose }: { open: boolean; onClose: () =>
                 >
                   {isGeneratingFingering
                     ? "Generating…"
-                    : doc.fingeringVersion === "auto"
+                    : doc.fingeringVersion !== "none"
                       ? "Regenerate"
                       : "Generate"}
                 </button>

frontend/src/components/Transport/TransportControls.tsx

@@ -4,18 +4,34 @@ import { syncEngine } from "../../engine/SyncEngine";
 
 function formatTime(s: number): string {
   const m = Math.floor(s / 60);
-  return `${m}:${Math.floor(s % 60).toString().padStart(2, "0")}`;
+  return `${m}:${Math.floor(s % 60)
+    .toString()
+    .padStart(2, "0")}`;
 }
 
 export function TransportControls() {
   const {
-    status, currentSeconds, tempoMultiplier,
+    status,
-    loopStart, loopEnd, waitMode,
+    currentSeconds,
+    tempoMultiplier,
+    loopStart,
+    loopEnd,
+    waitMode,
     document: doc,
-    play, pause, stop, seek,
+    play,
-    setTempoMultiplier, setLoopPoints, setWaitMode, setMetronome,
+    pause,
-    settings, loadMidiFile, loadMusicXmlFile, loadPdfFile,
+    stop,
-    isLoadingDocument, loadingMessage,
+    seek,
+    setTempoMultiplier,
+    setLoopPoints,
+    setWaitMode,
+    setMetronome,
+    settings,
+    loadMidiFile,
+    loadMusicXmlFile,
+    loadPdfFile,
+    isLoadingDocument,
+    loadingMessage,
   } = useAppStore();
 
   const [speedOpen, setSpeedOpen] = useState(false);
@@ -43,7 +59,7 @@ export function TransportControls() {
 
   const openFile = (file: File) => {
     if (file.name.match(/\.midi?$/i)) loadMidiFile(file);
-    else if (file.name.match(/\.mxl?$/i)) loadMusicXmlFile(file);
+    else if (file.name.match(/\.(xml|mxl)$/i)) loadMusicXmlFile(file);
     else if (file.name.match(/\.pdf$/i)) loadPdfFile(file);
   };
 
@@ -62,8 +78,9 @@ export function TransportControls() {
 
   const toggleHand = (hand: "left" | "right") => {
     const next = new Set(settings.activeHands);
-    if (next.has(hand)) { if (next.size > 1) next.delete(hand); }
+    if (next.has(hand)) {
-    else next.add(hand);
+      if (next.size > 1) next.delete(hand);
+    } else next.add(hand);
     useAppStore.getState().setActiveHands(next);
   };
 
@@ -73,13 +90,22 @@ export function TransportControls() {
     setLoopPoints(start, end > start ? end : total);
   };
   const clearLoop = () => setLoopPoints(null, null);
-  const setLoopA  = () => { if (loopEnd   !== null) setLoopPoints(Math.min(currentSeconds, loopEnd   - 1), loopEnd); };
+  const setLoopA = () => {
-  const setLoopB  = () => { if (loopStart !== null) setLoopPoints(loopStart, Math.max(currentSeconds, loopStart + 1)); };
+    if (loopEnd !== null) setLoopPoints(Math.min(currentSeconds, loopEnd - 1), loopEnd);
+  };
+  const setLoopB = () => {
+    if (loopStart !== null) setLoopPoints(loopStart, Math.max(currentSeconds, loopStart + 1));
+  };
 
   return (
     <div
       className="flex flex-col gap-1.5 pt-2 pb-2 flex-shrink-0 select-none"
-      style={{ borderTop: "1px solid var(--color-border)", background: "var(--color-surface)", paddingLeft: 12, paddingRight: 12 }}
+      style={{
+        borderTop: "1px solid var(--color-border)",
+        background: "var(--color-surface)",
+        paddingLeft: 12,
+        paddingRight: 12,
+      }}
     >
       {/* ── Progress bar ──────────────────────────────────────────────────── */}
       <div className="flex items-center gap-2" style={{ marginLeft: -12, marginRight: -12 }}>
@@ -102,7 +128,10 @@ export function TransportControls() {
           aria-valuemin={0}
           aria-valuemax={100}
         >
-          <div className="relative rounded-full" style={{ height: 6, background: "var(--color-surface-3)" }}>
+          <div
+            className="relative rounded-full"
+            style={{ height: 6, background: "var(--color-surface-3)" }}
+          >
             {/* Loop region */}
             {loopActive && total > 0 && (
               <div
@@ -148,36 +177,53 @@ export function TransportControls() {
       </div>
 
       {/* ── Controls row ──────────────────────────────────────────────────── */}
-      <div className="flex items-center min-w-0" style={{ gap: 6, overflowX: "auto", scrollbarWidth: "none" }}>
+      <div
-
+        className="flex items-center min-w-0"
+        style={{ gap: 6, overflowX: "auto", scrollbarWidth: "none" }}
+      >
         {/* ── Zone 1: File import - accent-styled to stand out ── */}
         <label
           title="Open MIDI, MusicXML, or PDF sheet music"
           aria-label="Import MIDI, MusicXML, or PDF file"
           style={{
-            display: "inline-flex", alignItems: "center", gap: 5,
+            display: "inline-flex",
-            height: 32, padding: "0 12px",
+            alignItems: "center",
-            borderRadius: 7, cursor: "pointer",
+            gap: 5,
-            fontSize: 12, fontWeight: 600, fontFamily: "inherit",
+            height: 32,
+            padding: "0 12px",
+            borderRadius: 7,
+            cursor: "pointer",
+            fontSize: 12,
+            fontWeight: 600,
+            fontFamily: "inherit",
             flexShrink: 0,
             background: "rgba(147,51,234,0.14)",
             border: "1px solid rgba(147,51,234,0.35)",
             color: "var(--color-accent-text)",
             transition: "background 0.12s",
           }}
-          onMouseEnter={(e) => ((e.currentTarget as HTMLElement).style.background = "rgba(147,51,234,0.24)")}
+          onMouseEnter={(e) =>
-          onMouseLeave={(e) => ((e.currentTarget as HTMLElement).style.background = "rgba(147,51,234,0.14)")}
+            ((e.currentTarget as HTMLElement).style.background = "rgba(147,51,234,0.24)")
+          }
+          onMouseLeave={(e) =>
+            ((e.currentTarget as HTMLElement).style.background = "rgba(147,51,234,0.14)")
+          }
         >
           {isLoadingDocument ? <SpinnerIcon /> : <UploadIcon />}
-          {isLoadingDocument && loadingMessage
+          {isLoadingDocument && loadingMessage ? (
-            ? <span style={{ fontSize: 11, color: "var(--color-text-muted)" }}>{loadingMessage}</span>
+            <span style={{ fontSize: 11, color: "var(--color-text-muted)" }}>{loadingMessage}</span>
-            : <span>Import</span>
+          ) : (
-          }
+            <span>Import</span>
+          )}
           <input
             type="file"
             accept=".mid,.midi,.xml,.mxl,.pdf"
             className="hidden"
-            onChange={(e) => { const f = e.target.files?.[0]; if (f) openFile(f); e.target.value = ""; }}
+            onChange={(e) => {
+              const f = e.target.files?.[0];
+              if (f) openFile(f);
+              e.target.value = "";
+            }}
           />
         </label>
 
@@ -185,10 +231,20 @@ export function TransportControls() {
 
         {/* ── Zone 2: Playback controls ───────────────────────── */}
         <div className="flex items-center shrink-0" style={{ gap: 4 }}>
-          <Btn onClick={stop} title="Stop and return to start" aria-label="Stop" disabled={isStopped}>
+          <Btn
+            onClick={stop}
+            title="Stop and return to start"
+            aria-label="Stop"
+            disabled={isStopped}
+          >
             <StopIcon />
           </Btn>
-          <Btn onClick={() => syncEngine.skipBy(-10)} title="Skip back 10 seconds" aria-label="Skip back 10 seconds" disabled={!doc}>
+          <Btn
+            onClick={() => syncEngine.skipBy(-10)}
+            title="Skip back 10 seconds"
+            aria-label="Skip back 10 seconds"
+            disabled={!doc}
+          >
             <SkipBackIcon />
           </Btn>
           <Btn
@@ -200,7 +256,12 @@ export function TransportControls() {
           >
             {isPlaying ? <PauseIcon /> : <PlayIcon />}
           </Btn>
-          <Btn onClick={() => syncEngine.skipBy(10)} title="Skip forward 10 seconds" aria-label="Skip forward 10 seconds" disabled={!doc}>
+          <Btn
+            onClick={() => syncEngine.skipBy(10)}
+            title="Skip forward 10 seconds"
+            aria-label="Skip forward 10 seconds"
+            disabled={!doc}
+          >
             <SkipFwdIcon />
           </Btn>
         </div>
@@ -221,16 +282,23 @@ export function TransportControls() {
                 aria-pressed={active}
                 className="rounded text-xs font-bold transition-all"
                 style={{
-                  width: 28, height: 28,
+                  width: 28,
+                  height: 28,
                   cursor: "pointer",
                   fontFamily: "inherit",
-                  ...(active ? {
+                  ...(active
-                    background: isLeft ? "var(--color-left-hand-subtle)"  : "var(--color-right-hand-subtle)",
+                    ? {
-                    color:      isLeft ? "var(--color-left-hand-text)"    : "var(--color-right-hand-text)",
+                        background: isLeft
+                          ? "var(--color-left-hand-subtle)"
+                          : "var(--color-right-hand-subtle)",
+                        color: isLeft
+                          ? "var(--color-left-hand-text)"
+                          : "var(--color-right-hand-text)",
                         border: isLeft
                           ? "1px solid var(--color-left-hand-subtle-border)"
                           : "1px solid var(--color-right-hand-subtle-border)",
-                  } : {
+                      }
+                    : {
                         background: "var(--color-surface-2)",
                         color: "var(--color-text-muted)",
                         border: "1px solid var(--color-border)",
@@ -249,8 +317,13 @@ export function TransportControls() {
 
         {/* ── Zone 5: Practice tools ──────────────────────────── */}
         <div className="flex items-center shrink-0" style={{ gap: 4 }}>
-
+          <ChipBtn
-          <ChipBtn active={waitMode} onClick={() => setWaitMode(!waitMode)} title="Pause until you play the correct note" aria-label="Wait mode" aria-pressed={waitMode}>
+            active={waitMode}
+            onClick={() => setWaitMode(!waitMode)}
+            title="Pause until you play the correct note"
+            aria-label="Wait mode"
+            aria-pressed={waitMode}
+          >
             <WaitIcon /> Wait
           </ChipBtn>
 
@@ -271,12 +344,15 @@ export function TransportControls() {
               title="Set loop start (A) to current position"
               aria-label="Set loop start to current position"
               style={{
-                height: 28, padding: "0 8px",
+                height: 28,
+                padding: "0 8px",
                 background: "transparent",
                 border: "none",
                 borderRight: "1px solid var(--color-border)",
                 color: loopActive ? "var(--color-accent-text)" : "var(--color-text-muted)",
-                fontSize: 11, fontWeight: 700, fontFamily: "inherit",
+                fontSize: 11,
+                fontWeight: 700,
+                fontFamily: "inherit",
                 cursor: loopActive ? "pointer" : "default",
                 opacity: loopActive ? 1 : 0.5,
                 transition: "all 0.12s",
@@ -293,13 +369,18 @@ export function TransportControls() {
               aria-label={loopActive ? "Clear loop" : "Start loop"}
               aria-pressed={loopActive}
               style={{
-                height: 28, padding: "0 9px",
+                height: 28,
+                padding: "0 9px",
                 background: loopActive ? "var(--color-accent-subtle)" : "transparent",
                 border: "none",
                 color: loopActive ? "var(--color-accent-text)" : "var(--color-text-muted)",
-                fontSize: 11, fontWeight: 500, fontFamily: "inherit",
+                fontSize: 11,
+                fontWeight: 500,
+                fontFamily: "inherit",
                 cursor: doc ? "pointer" : "default",
-                display: "flex", alignItems: "center", gap: 4,
+                display: "flex",
+                alignItems: "center",
+                gap: 4,
                 transition: "all 0.12s",
               }}
             >
@@ -314,12 +395,15 @@ export function TransportControls() {
               title="Set loop end (B) to current position"
               aria-label="Set loop end to current position"
               style={{
-                height: 28, padding: "0 8px",
+                height: 28,
+                padding: "0 8px",
                 background: "transparent",
                 border: "none",
                 borderLeft: "1px solid var(--color-border)",
                 color: loopActive ? "var(--color-accent-text)" : "var(--color-text-muted)",
-                fontSize: 11, fontWeight: 700, fontFamily: "inherit",
+                fontSize: 11,
+                fontWeight: 700,
+                fontFamily: "inherit",
                 cursor: loopActive ? "pointer" : "default",
                 opacity: loopActive ? 1 : 0.5,
                 transition: "all 0.12s",
@@ -367,20 +451,47 @@ export function TransportControls() {
                   padding: "12px 14px",
                 }}
               >
-                <div style={{ display: "flex", alignItems: "center", justifyContent: "space-between", marginBottom: 10 }}>
+                <div
-                  <span style={{ fontSize: 12, fontWeight: 600, color: "var(--color-text)" }}>Playback Speed</span>
+                  style={{
-                  <span style={{ fontSize: 13, fontWeight: 700, color: "var(--color-accent-text)", fontVariantNumeric: "tabular-nums" }}>
+                    display: "flex",
+                    alignItems: "center",
+                    justifyContent: "space-between",
+                    marginBottom: 10,
+                  }}
+                >
+                  <span style={{ fontSize: 12, fontWeight: 600, color: "var(--color-text)" }}>
+                    Playback Speed
+                  </span>
+                  <span
+                    style={{
+                      fontSize: 13,
+                      fontWeight: 700,
+                      color: "var(--color-accent-text)",
+                      fontVariantNumeric: "tabular-nums",
+                    }}
+                  >
                     {Math.round(tempoMultiplier * 100)}%
                   </span>
                 </div>
                 <input
-                  type="range" min={25} max={200} step={5}
+                  type="range"
+                  min={25}
+                  max={200}
+                  step={5}
                   value={Math.round(tempoMultiplier * 100)}
                   onChange={(e) => setTempoMultiplier(Number(e.target.value) / 100)}
                   aria-label="Playback speed"
                   style={{ width: "100%", accentColor: "var(--color-accent)" }}
                 />
-                <div style={{ display: "flex", justifyContent: "space-between", fontSize: 10, color: "var(--color-text-muted)", marginTop: 4 }}>
+                <div
+                  style={{
+                    display: "flex",
+                    justifyContent: "space-between",
+                    fontSize: 10,
+                    color: "var(--color-text-muted)",
+                    marginTop: 4,
+                  }}
+                >
                   <span>25%</span>
                   <span>100%</span>
                   <span>200%</span>
@@ -389,12 +500,15 @@ export function TransportControls() {
                   <button
                     onClick={() => setTempoMultiplier(1.0)}
                     style={{
-                      marginTop: 10, width: "100%",
+                      marginTop: 10,
+                      width: "100%",
                       background: "var(--color-surface-2)",
                       border: "1px solid var(--color-border)",
                       borderRadius: 6,
                       color: "var(--color-accent-text)",
-                      fontSize: 11, fontWeight: 600, fontFamily: "inherit",
+                      fontSize: 11,
+                      fontWeight: 600,
+                      fontFamily: "inherit",
                       padding: "5px 0",
                       cursor: "pointer",
                     }}
@@ -405,7 +519,6 @@ export function TransportControls() {
               </div>
             )}
           </div>
-
         </div>
 
         {/* Waiting status pill */}
@@ -419,7 +532,6 @@ export function TransportControls() {
             ● Waiting…
           </span>
         )}
-
       </div>
     </div>
   );
@@ -427,7 +539,14 @@ export function TransportControls() {
 
 // ── Sub-components ────────────────────────────────────────────────────────────
 
-function Btn({ onClick, title, "aria-label": ariaLabel, children, primary, disabled }: {
+function Btn({
+  onClick,
+  title,
+  "aria-label": ariaLabel,
+  children,
+  primary,
+  disabled,
+}: {
   onClick: () => void;
   title?: string;
   "aria-label"?: string;
@@ -448,7 +567,15 @@ function Btn({ onClick, title, "aria-label": ariaLabel, children, primary, disab
   );
 }
 
-function ChipBtn({ active, onClick, title, "aria-label": ariaLabel, "aria-pressed": ariaPressed, children, disabled }: {
+function ChipBtn({
+  active,
+  onClick,
+  title,
+  "aria-label": ariaLabel,
+  "aria-pressed": ariaPressed,
+  children,
+  disabled,
+}: {
   active: boolean;
   onClick: () => void;
   title?: string;
@@ -466,12 +593,21 @@ function ChipBtn({ active, onClick, title, "aria-label": ariaLabel, "aria-presse
       disabled={disabled}
       className="flex items-center gap-1 rounded text-xs font-medium transition-all shrink-0"
       style={{
-        height: 28, padding: "0 8px",
+        height: 28,
+        padding: "0 8px",
         cursor: disabled ? "default" : "pointer",
         fontFamily: "inherit",
         ...(active
-          ? { background: "var(--color-accent-subtle)", color: "var(--color-accent-text)", border: "1px solid var(--color-accent-subtle-border)" }
+          ? {
-          : { background: "var(--color-surface-2)",     color: "var(--color-text-muted)",  border: "1px solid var(--color-border)" }),
+              background: "var(--color-accent-subtle)",
+              color: "var(--color-accent-text)",
+              border: "1px solid var(--color-accent-subtle-border)",
+            }
+          : {
+              background: "var(--color-surface-2)",
+              color: "var(--color-text-muted)",
+              border: "1px solid var(--color-border)",
+            }),
       }}
     >
       {children}
@@ -480,53 +616,97 @@ function ChipBtn({ active, onClick, title, "aria-label": ariaLabel, "aria-presse
 }
 
 function Divider() {
-  return <div className="shrink-0" style={{ width: 1, height: 20, background: "var(--color-border)", margin: "0 2px" }} />;
+  return (
+    <div
+      className="shrink-0"
+      style={{ width: 1, height: 20, background: "var(--color-border)", margin: "0 2px" }}
+    />
+  );
 }
 
 // ── Icons ─────────────────────────────────────────────────────────────────────
-const PlayIcon     = () => <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor"><path d="M8 5v14l11-7z"/></svg>;
+const PlayIcon = () => (
-const PauseIcon    = () => <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor"><path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z"/></svg>;
+  <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor">
-const StopIcon     = () => <svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor"><rect x="5" y="5" width="14" height="14" rx="1"/></svg>;
+    <path d="M8 5v14l11-7z" />
+  </svg>
+);
+const PauseIcon = () => (
+  <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor">
+    <path d="M6 19h4V5H6v14zm8-14v14h4V5h-4z" />
+  </svg>
+);
+const StopIcon = () => (
+  <svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor">
+    <rect x="5" y="5" width="14" height="14" rx="1" />
+  </svg>
+);
 const SkipBackIcon = () => (
   <svg width="15" height="15" viewBox="0 0 24 24" fill="currentColor">
-    <path d="M12 5V1L7 6l5 5V7c3.31 0 6 2.69 6 6s-2.69 6-6 6-6-2.69-6-6H4c0 4.42 3.58 8 8 8s8-3.58 8-8-3.58-8-8-8z"/>
+    <path d="M12 5V1L7 6l5 5V7c3.31 0 6 2.69 6 6s-2.69 6-6 6-6-2.69-6-6H4c0 4.42 3.58 8 8 8s8-3.58 8-8-3.58-8-8-8z" />
-    <text x="12" y="16" fontSize="7" fontWeight="bold" textAnchor="middle" fontFamily="inherit">10</text>
+    <text x="12" y="16" fontSize="7" fontWeight="bold" textAnchor="middle" fontFamily="inherit">
+      10
+    </text>
   </svg>
 );
 const SkipFwdIcon = () => (
   <svg width="15" height="15" viewBox="0 0 24 24" fill="currentColor">
-    <path d="M18 13c0 3.31-2.69 6-6 6s-6-2.69-6-6 2.69-6 6-6v4l5-5-5-5v4c-4.42 0-8 3.58-8 8s3.58 8 8 8 8-3.58 8-8h-2z"/>
+    <path d="M18 13c0 3.31-2.69 6-6 6s-6-2.69-6-6 2.69-6 6-6v4l5-5-5-5v4c-4.42 0-8 3.58-8 8s3.58 8 8 8 8-3.58 8-8h-2z" />
-    <text x="12" y="16" fontSize="7" fontWeight="bold" textAnchor="middle" fontFamily="inherit">10</text>
+    <text x="12" y="16" fontSize="7" fontWeight="bold" textAnchor="middle" fontFamily="inherit">
+      10
+    </text>
+  </svg>
+);
+const UploadIcon = () => (
+  <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor">
+    <path d="M9 16h6v-6h4l-7-7-7 7h4v6zm-4 2h14v2H5v-2z" />
+  </svg>
+);
+const SpinnerIcon = () => (
+  <svg
+    width="12"
+    height="12"
+    viewBox="0 0 24 24"
+    fill="currentColor"
+    style={{ animation: "spin 1s linear infinite" }}
+  >
+    <path d="M12 4V2A10 10 0 0 0 2 12h2a8 8 0 0 1 8-8z" />
   </svg>
 );
-const UploadIcon   = () => <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor"><path d="M9 16h6v-6h4l-7-7-7 7h4v6zm-4 2h14v2H5v-2z"/></svg>;
-const SpinnerIcon  = () => <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor" style={{ animation: "spin 1s linear infinite" }}><path d="M12 4V2A10 10 0 0 0 2 12h2a8 8 0 0 1 8-8z"/></svg>;
 
 const WaitIcon = () => (
   <svg width="10" height="10" viewBox="0 0 20 20" fill="currentColor">
-    <rect x="3.5" y="10" width="13" height="7" rx="1.5"/>
+    <rect x="3.5" y="10" width="13" height="7" rx="1.5" />
-    <rect x="4"   y="2.5" width="2.5" height="9"   rx="1.25"/>
+    <rect x="4" y="2.5" width="2.5" height="9" rx="1.25" />
-    <rect x="7.5" y="1"   width="2.5" height="10.5" rx="1.25"/>
+    <rect x="7.5" y="1" width="2.5" height="10.5" rx="1.25" />
-    <rect x="11"  y="1.5" width="2.5" height="10"   rx="1.25"/>
+    <rect x="11" y="1.5" width="2.5" height="10" rx="1.25" />
-    <rect x="14"  y="4"   width="2.5" height="7.5"  rx="1.25"/>
+    <rect x="14" y="4" width="2.5" height="7.5" rx="1.25" />
   </svg>
 );
 
 const LoopIcon = () => (
   <svg width="12" height="12" viewBox="0 0 24 24" fill="currentColor">
-    <path d="M12 4V1L8 5l4 4V6c3.31 0 6 2.69 6 6 0 1.01-.25 1.97-.7 2.8l1.46 1.46C19.68 14.72 20 13.41 20 12c0-4.42-3.58-8-8-8zm0 14c-3.31 0-6-2.69-6-6 0-1.01.25-1.97.7-2.8L5.24 7.74C4.32 9.28 4 10.59 4 12c0 4.42 3.58 8 8 8v3l4-4-4-4v3z"/>
+    <path d="M12 4V1L8 5l4 4V6c3.31 0 6 2.69 6 6 0 1.01-.25 1.97-.7 2.8l1.46 1.46C19.68 14.72 20 13.41 20 12c0-4.42-3.58-8-8-8zm0 14c-3.31 0-6-2.69-6-6 0-1.01.25-1.97.7-2.8L5.24 7.74C4.32 9.28 4 10.59 4 12c0 4.42 3.58 8 8 8v3l4-4-4-4v3z" />
   </svg>
 );
 
 const SpeedIcon = () => (
   <svg width="10" height="10" viewBox="0 0 24 24" fill="currentColor">
-    <path d="M7 2v11h3v9l7-12h-4l4-8z"/>
+    <path d="M7 2v11h3v9l7-12h-4l4-8z" />
   </svg>
 );
 
 const MetronomeIcon = () => (
-  <svg width="10" height="10" viewBox="0 0 20 20" fill="none" stroke="currentColor" strokeWidth="1.6" strokeLinecap="round" strokeLinejoin="round">
+  <svg
-    <path d="M10 2L2 18h16L10 2z"/>
+    width="10"
-    <line x1="10" y1="15" x2="13.5" y2="6"/>
+    height="10"
+    viewBox="0 0 20 20"
+    fill="none"
+    stroke="currentColor"
+    strokeWidth="1.6"
+    strokeLinecap="round"
+    strokeLinejoin="round"
+  >
+    <path d="M10 2L2 18h16L10 2z" />
+    <line x1="10" y1="15" x2="13.5" y2="6" />
   </svg>
 );

frontend/src/store/useAppStore.ts

@@ -372,8 +372,24 @@ export const useAppStore = create<AppState>((set, get) => {
         doc.musicXml = musicxml;
         doc.sourceType = "musicxml";
 
-        set({ document: { ...doc, midiBuffer: bufferForDoc } });
+        // Preserve any printed fingerings Audiveris detected in the PDF
-        await syncEngine.loadDocument({ ...doc, midiBuffer: bufferForDoc });
+        // (uncommon but possible for well-scanned editorial scores).
+        let manualFingeringsFound = false;
+        if (musicxml) {
+          const notesWithFingerings = applyFingeringFromXml(doc.notes, musicxml);
+          if (notesWithFingerings.some((n) => n.finger !== null)) {
+            doc.notes = notesWithFingerings;
+            doc.fingeringVersion = "manual";
+            manualFingeringsFound = true;
+          }
+        }
+
+        const finalDoc = { ...doc, midiBuffer: bufferForDoc };
+        set((s) => ({
+          document: finalDoc,
+          settings: manualFingeringsFound ? { ...s.settings, showFingering: true } : s.settings,
+        }));
+        await syncEngine.loadDocument(finalDoc);
       } catch (err) {
         set({ loadError: String(err) });
       } finally {
@@ -689,10 +705,29 @@ async function fetchMidiFromXml(
   updatedDoc.musicXml = doc.musicXml;
   updatedDoc.sourceType = "musicxml";
 
+  // Preserve editorial fingerings from the source MusicXML when present
+  // (e.g. publisher scores from Henle, Barenreiter). Without this the
+  // round-trip through MIDI would strip them, since MIDI has no fingering
+  // field. Same matching helper as Generate - any standard <fingering>
+  // elements with <staff> hints are honored.
+  let manualFingeringsFound = false;
+  if (doc.musicXml) {
+    const notesWithFingerings = applyFingeringFromXml(updatedDoc.notes, doc.musicXml);
+    if (notesWithFingerings.some((n) => n.finger !== null)) {
+      updatedDoc.notes = notesWithFingerings;
+      updatedDoc.fingeringVersion = "manual";
+      manualFingeringsFound = true;
+    }
+  }
+
   const { document: currentDoc } = useAppStore.getState();
   if (currentDoc?.id === id) {
-    useAppStore.setState({ document: { ...updatedDoc, midiBuffer: bufferForDoc } });
+    const finalDoc = { ...updatedDoc, midiBuffer: bufferForDoc };
-    await syncEngine.loadDocument({ ...updatedDoc, midiBuffer: bufferForDoc });
+    useAppStore.setState((s) => ({
+      document: finalDoc,
+      settings: manualFingeringsFound ? { ...s.settings, showFingering: true } : s.settings,
+    }));
+    await syncEngine.loadDocument(finalDoc);
   }
 }
 

frontend/src/views/PracticeView.tsx

@@ -115,7 +115,7 @@ export function PracticeView() {
   const loadFile = useCallback(
     (file: File) => {
       if (file.name.match(/\.midi?$/i)) loadMidiFile(file);
-      else if (file.name.match(/\.mxl?$/i)) loadMusicXmlFile(file);
+      else if (file.name.match(/\.(xml|mxl)$/i)) loadMusicXmlFile(file);
       else if (file.name.match(/\.pdf$/i)) loadPdfFile(file);
     },
     [loadMidiFile, loadMusicXmlFile, loadPdfFile]