회원 메뉴와 관리자 진입을 상단에 표시한다

곡 보관함과 로그인·회원가입과 관리자 버튼을 항상 보이도록 분리했다. 관리자 버튼은 권한에 따라 로그인 화면 또는 회원 관리 화면으로 이동한다. PWA 시작 문서와 서비스 워커의 캐시 정책을 보완해 배포 뒤 예전 화면이 오래 남지 않게 했다. 검사: pnpm 9 lint-staged와 프런트엔드 프로덕션 빌드 통과.

frontend/nginx.conf

@@ -26,6 +26,18 @@ server {
         try_files $uri $uri/ /index.html;
     }
 
+    # PWA 시작 문서와 서비스 워커는 매번 최신 상태를 확인한다. 해시가 붙은
+    # 정적 자산만 장기 캐시하므로 배포 뒤 예전 화면이 계속 남지 않는다.
+    location = /index.html {
+        expires -1;
+        add_header Cache-Control "no-store, no-cache, must-revalidate" always;
+    }
+
+    location ~ ^/(sw\.js|registerSW\.js|manifest\.webmanifest)$ {
+        expires -1;
+        add_header Cache-Control "no-store, no-cache, must-revalidate" always;
+    }
+
     # API proxy, strips the /api prefix on the way through
     location /api/ {
         proxy_pass         http://backend:8000/;

frontend/src/components/Library/LibraryPanel.tsx

@@ -1,7 +1,6 @@
 import { useCallback, useEffect, useMemo, useState } from "react";
 import type { ReactNode } from "react";
 
-
 type User = {
   id: number;
   username: string;
@@ -35,7 +34,7 @@ type MidiItem = {
 };
 
 type AuthResult = { user: User | null; csrf_token: string | null };
-type Tab = "browse" | "upload" | "account" | "admin";
+export type LibraryTab = "browse" | "upload" | "account" | "admin";
 
 const TIER_LABELS: Record<number, string> = {
   0: "비회원",
@@ -86,12 +85,14 @@ export function LibraryPanel({
   open,
   onClose,
   onLoad,
+  initialTab = "browse",
 }: {
   open: boolean;
   onClose: () => void;
   onLoad: (file: File) => void;
+  initialTab?: LibraryTab;
 }) {
-  const [tab, setTab] = useState<Tab>("browse");
+  const [tab, setTab] = useState<LibraryTab>("browse");
   const [user, setUser] = useState<User | null>(null);
   const [csrf, setCsrf] = useState<string | null>(null);
   const [items, setItems] = useState<MidiItem[]>([]);
@@ -109,6 +110,7 @@ export function LibraryPanel({
     const result = await apiJson<AuthResult>("/api/library/auth/me");
     setUser(result.user);
     setCsrf(result.csrf_token);
+    return result;
   }, []);
 
   const refreshItems = useCallback(async () => {
@@ -118,9 +120,10 @@ export function LibraryPanel({
     if (difficulty) params.set("difficulty", difficulty);
     if (arrangement) params.set("arrangement", arrangement);
     if (activeTag) params.set("tag", activeTag);
-    const result = await apiJson<{ items: MidiItem[]; facets: { genres: string[]; tags: string[] } }>(
-      `/api/library/midi?${params}`
-    );
+    const result = await apiJson<{
+      items: MidiItem[];
+      facets: { genres: string[]; tags: string[] };
+    }>(`/api/library/midi?${params}`);
     setItems(result.items);
     setGenres(result.facets.genres);
     setTags(result.facets.tags);
@@ -128,12 +131,30 @@ export function LibraryPanel({
 
   useEffect(() => {
     if (!open) return;
-    refreshAuth().catch((error) => setMessage(error.message));
-  }, [open, refreshAuth]);
+    const timer = window.setTimeout(() => {
+      refreshAuth()
+        .then((result) => {
+          if (initialTab === "admin" && result.user?.role !== "admin") {
+            setTab("account");
+            setMessage(
+              result.user ? "관리자 권한이 필요합니다" : "관리자 계정으로 로그인해 주세요"
+            );
+            return;
+          }
+          setTab(initialTab);
+          setMessage("");
+        })
+        .catch((error) => setMessage(error.message));
+    }, 0);
+    return () => window.clearTimeout(timer);
+  }, [open, initialTab, refreshAuth]);
 
   useEffect(() => {
     if (!open) return;
-    const timer = window.setTimeout(() => refreshItems().catch((error) => setMessage(error.message)), 180);
+    const timer = window.setTimeout(
+      () => refreshItems().catch((error) => setMessage(error.message)),
+      180
+    );
     return () => window.clearTimeout(timer);
   }, [open, refreshItems, user]);
 
@@ -175,9 +196,15 @@ export function LibraryPanel({
     run(async () => {
       let shared_usernames: string[] | undefined;
       if (visibility === "shared") {
-        const text = window.prompt("공유할 회원 아이디를 쉼표로 구분해 입력하세요", item.shared_usernames.join(", "));
+        const text = window.prompt(
+          "공유할 회원 아이디를 쉼표로 구분해 입력하세요",
+          item.shared_usernames.join(", ")
+        );
         if (text === null) return;
-        shared_usernames = text.split(",").map((value) => value.trim()).filter(Boolean);
+        shared_usernames = text
+          .split(",")
+          .map((value) => value.trim())
+          .filter(Boolean);
       }
       await apiJson(`/api/library/midi/${item.id}`, {
         method: "PATCH",
@@ -199,20 +226,48 @@ export function LibraryPanel({
       <section className="library-panel">
         <header className="library-header">
           <div>
-            <strong>곡 보관함</strong>
-            <span>{user ? `${user.display_name} · ${TIER_LABELS[user.tier]}` : "비회원은 공개 곡을 바로 연주할 수 있습니다"}</span>
+            <strong>
+              {tab === "account"
+                ? "로그인과 회원 가입"
+                : tab === "admin"
+                  ? "관리자 패널"
+                  : "곡 보관함"}
+            </strong>
+            <span>
+              {user
+                ? `${user.display_name} · ${TIER_LABELS[user.tier]}`
+                : "비회원은 공개 곡을 바로 연주할 수 있습니다"}
+            </span>
           </div>
-          <button type="button" onClick={onClose} aria-label="곡 보관함 닫기">닫기</button>
+          <button type="button" onClick={onClose} aria-label="곡 보관함 닫기">
+            닫기
+          </button>
         </header>
 
         <nav className="library-tabs" aria-label="곡 보관함 메뉴">
-          <TabButton active={tab === "browse"} onClick={() => setTab("browse")}>곡 찾기</TabButton>
-          {user && <TabButton active={tab === "upload"} onClick={() => setTab("upload")}>업로드</TabButton>}
-          <TabButton active={tab === "account"} onClick={() => setTab("account")}>{user ? "내 계정" : "로그인"}</TabButton>
-          {user?.role === "admin" && <TabButton active={tab === "admin"} onClick={() => setTab("admin")}>회원 관리</TabButton>}
+          <TabButton active={tab === "browse"} onClick={() => setTab("browse")}>
+            곡 찾기
+          </TabButton>
+          {user && (
+            <TabButton active={tab === "upload"} onClick={() => setTab("upload")}>
+              업로드
+            </TabButton>
+          )}
+          <TabButton active={tab === "account"} onClick={() => setTab("account")}>
+            {user ? "내 계정" : "로그인"}
+          </TabButton>
+          {user?.role === "admin" && (
+            <TabButton active={tab === "admin"} onClick={() => setTab("admin")}>
+              회원 관리
+            </TabButton>
+          )}
         </nav>
 
-        {message && <div className="library-message" role="status">{message}</div>}
+        {message && (
+          <div className="library-message" role="status">
+            {message}
+          </div>
+        )}
 
         <div className="library-body" aria-busy={busy}>
           {tab === "browse" && (
@@ -242,9 +297,18 @@ export function LibraryPanel({
               busy={busy}
               run={run}
               onAuthenticated={async (result) => {
-                setUser(result.user);
+                const authenticatedUser = result.user;
+                if (!authenticatedUser) throw new Error("로그인 정보를 확인하지 못했습니다");
+                setUser(authenticatedUser);
                 setCsrf(result.csrf_token);
-                setTab("browse");
+                setTab(
+                  initialTab === "admin" && authenticatedUser.role === "admin" ? "admin" : "browse"
+                );
+                setMessage(
+                  initialTab === "admin" && authenticatedUser.role !== "admin"
+                    ? "관리자 권한이 필요합니다"
+                    : ""
+                );
                 await refreshItems();
               }}
               onSignedOut={() => {
@@ -255,11 +319,16 @@ export function LibraryPanel({
             />
           )}
           {tab === "upload" && user && (
-            <UploadTab csrf={csrf} busy={busy} run={run} onUploaded={async () => {
-              await refreshItems();
-              setTab("browse");
-              setMessage("MIDI를 업로드했습니다");
-            }} />
+            <UploadTab
+              csrf={csrf}
+              busy={busy}
+              run={run}
+              onUploaded={async () => {
+                await refreshItems();
+                setTab("browse");
+                setMessage("MIDI를 업로드했습니다");
+              }}
+            />
           )}
           {tab === "admin" && user?.role === "admin" && (
             <AdminTab csrf={csrf} busy={busy} run={run} currentUserId={user.id} />
@@ -270,8 +339,20 @@ export function LibraryPanel({
   );
 }
 
-function TabButton({ active, onClick, children }: { active: boolean; onClick: () => void; children: ReactNode }) {
-  return <button type="button" className={active ? "active" : ""} onClick={onClick}>{children}</button>;
+function TabButton({
+  active,
+  onClick,
+  children,
+}: {
+  active: boolean;
+  onClick: () => void;
+  children: ReactNode;
+}) {
+  return (
+    <button type="button" className={active ? "active" : ""} onClick={onClick}>
+      {children}
+    </button>
+  );
 }
 
 function BrowseTab(props: {
@@ -295,24 +376,55 @@ function BrowseTab(props: {
   return (
     <div className="library-browse">
       <div className="library-filters">
-        <input value={props.search} onChange={(event) => props.setSearch(event.target.value)} placeholder="곡명·가수·태그 검색" />
+        <input
+          value={props.search}
+          onChange={(event) => props.setSearch(event.target.value)}
+          placeholder="곡명·가수·태그 검색"
+        />
         <select value={props.genre} onChange={(event) => props.setGenre(event.target.value)}>
           <option value="">모든 장르</option>
-          {props.genres.map((value) => <option key={value}>{value}</option>)}
+          {props.genres.map((value) => (
+            <option key={value}>{value}</option>
+          ))}
         </select>
-        <select value={props.difficulty} onChange={(event) => props.setDifficulty(event.target.value)}>
+        <select
+          value={props.difficulty}
+          onChange={(event) => props.setDifficulty(event.target.value)}
+        >
           <option value="">모든 난이도</option>
-          {Object.entries(DIFFICULTY_LABELS).map(([value, label]) => <option key={value} value={value}>{label}</option>)}
+          {Object.entries(DIFFICULTY_LABELS).map(([value, label]) => (
+            <option key={value} value={value}>
+              {label}
+            </option>
+          ))}
         </select>
-        <select value={props.arrangement} onChange={(event) => props.setArrangement(event.target.value)}>
+        <select
+          value={props.arrangement}
+          onChange={(event) => props.setArrangement(event.target.value)}
+        >
           <option value="">모든 형태</option>
-          {Object.entries(ARRANGEMENT_LABELS).map(([value, label]) => <option key={value} value={value}>{label}</option>)}
+          {Object.entries(ARRANGEMENT_LABELS).map(([value, label]) => (
+            <option key={value} value={value}>
+              {label}
+            </option>
+          ))}
         </select>
       </div>
       <div className="library-tag-filter">
-        {props.activeTag && <button type="button" className="active" onClick={() => props.setActiveTag("")}>#{props.activeTag} 지우기</button>}
+        {props.activeTag && (
+          <button type="button" className="active" onClick={() => props.setActiveTag("")}>
+            #{props.activeTag} 지우기
+          </button>
+        )}
         {props.tags.slice(0, 20).map((tag) => (
-          <button type="button" key={tag} className={props.activeTag === tag ? "active" : ""} onClick={() => props.setActiveTag(tag)}>#{tag}</button>
+          <button
+            type="button"
+            key={tag}
+            className={props.activeTag === tag ? "active" : ""}
+            onClick={() => props.setActiveTag(tag)}
+          >
+            #{tag}
+          </button>
         ))}
       </div>
       {props.groups.length === 0 && <div className="library-empty">조건에 맞는 곡이 없습니다.</div>}
@@ -320,7 +432,10 @@ function BrowseTab(props: {
         {props.groups.map((group) => (
           <article className="library-group" key={group[0].group_key}>
             <div className="library-group-title">
-              <div><strong>{group[0].title}</strong><span>{group[0].artist || "아티스트 미지정"}</span></div>
+              <div>
+                <strong>{group[0].title}</strong>
+                <span>{group[0].artist || "아티스트 미지정"}</span>
+              </div>
               <small>{group.length}개 버전</small>
             </div>
             <div className="library-variants">
@@ -328,16 +443,43 @@ function BrowseTab(props: {
                 <div className="library-variant" key={item.id}>
                   <div className="library-variant-main">
                     <strong>{ARRANGEMENT_LABELS[item.arrangement]}</strong>
-                    <span>{DIFFICULTY_LABELS[item.difficulty]} · {item.genre || "장르 미지정"}</span>
+                    <span>
+                      {DIFFICULTY_LABELS[item.difficulty]} · {item.genre || "장르 미지정"}
+                    </span>
                     <p>{item.description || "설명이 없습니다"}</p>
-                    <div className="library-tag-row">{item.tags.map((tag) => <button type="button" key={tag} onClick={() => props.setActiveTag(tag)}>#{tag}</button>)}</div>
-                    <small>{VISIBILITY_LABELS[item.visibility]} · {item.owner}{item.min_tier > 1 ? ` · ${TIER_LABELS[item.min_tier]} 이상` : ""}</small>
+                    <div className="library-tag-row">
+                      {item.tags.map((tag) => (
+                        <button type="button" key={tag} onClick={() => props.setActiveTag(tag)}>
+                          #{tag}
+                        </button>
+                      ))}
+                    </div>
+                    <small>
+                      {VISIBILITY_LABELS[item.visibility]} · {item.owner}
+                      {item.min_tier > 1 ? ` · ${TIER_LABELS[item.min_tier]} 이상` : ""}
+                    </small>
                   </div>
                   <div className="library-variant-actions">
-                    <button type="button" className="primary" disabled={props.busy} onClick={() => props.loadItem(item)}>연주하기</button>
+                    <button
+                      type="button"
+                      className="primary"
+                      disabled={props.busy}
+                      onClick={() => props.loadItem(item)}
+                    >
+                      연주하기
+                    </button>
                     {item.can_edit && (
-                      <select value={item.visibility} onChange={(event) => props.updateVisibility(item, event.target.value as MidiItem["visibility"])}>
-                        {Object.entries(VISIBILITY_LABELS).map(([value, label]) => <option key={value} value={value}>{label}</option>)}
+                      <select
+                        value={item.visibility}
+                        onChange={(event) =>
+                          props.updateVisibility(item, event.target.value as MidiItem["visibility"])
+                        }
+                      >
+                        {Object.entries(VISIBILITY_LABELS).map(([value, label]) => (
+                          <option key={value} value={value}>
+                            {label}
+                          </option>
+                        ))}
                       </select>
                     )}
                   </div>
@@ -373,27 +515,85 @@ function AccountTab(props: {
     return (
       <div className="account-card">
         <div className="account-mode">
-          <button type="button" className={mode === "login" ? "active" : ""} onClick={() => setMode("login")}>로그인</button>
-          <button type="button" className={mode === "register" ? "active" : ""} onClick={() => setMode("register")}>회원 가입</button>
+          <button
+            type="button"
+            className={mode === "login" ? "active" : ""}
+            onClick={() => setMode("login")}
+          >
+            로그인
+          </button>
+          <button
+            type="button"
+            className={mode === "register" ? "active" : ""}
+            onClick={() => setMode("register")}
+          >
+            회원 가입
+          </button>
         </div>
-        <form onSubmit={(event) => {
-          event.preventDefault();
-          props.run(async () => {
-            const body = mode === "login" ? { username, password } : { username, password, display_name: displayName, email: email || null };
-            const result = await apiJson<AuthResult>(`/api/library/auth/${mode === "login" ? "login" : "register"}`, {
-              method: "POST", headers: authHeaders(null), body: JSON.stringify(body),
+        <form
+          onSubmit={(event) => {
+            event.preventDefault();
+            props.run(async () => {
+              const body =
+                mode === "login"
+                  ? { username, password }
+                  : { username, password, display_name: displayName, email: email || null };
+              const result = await apiJson<AuthResult>(
+                `/api/library/auth/${mode === "login" ? "login" : "register"}`,
+                {
+                  method: "POST",
+                  headers: authHeaders(null),
+                  body: JSON.stringify(body),
+                }
+              );
+              setPassword("");
+              await props.onAuthenticated(result);
             });
-            setPassword("");
-            await props.onAuthenticated(result);
-          });
-        }}>
-          <label>아이디<input autoComplete="username" value={username} onChange={(event) => setUsername(event.target.value)} required /></label>
-          {mode === "register" && <>
-            <label>표시 이름<input value={displayName} onChange={(event) => setDisplayName(event.target.value)} required /></label>
-            <label>이메일 선택<input type="email" value={email} onChange={(event) => setEmail(event.target.value)} /></label>
-          </>}
-          <label>비밀번호<input type="password" autoComplete={mode === "login" ? "current-password" : "new-password"} value={password} onChange={(event) => setPassword(event.target.value)} minLength={10} required /></label>
-          <button type="submit" className="primary" disabled={props.busy}>{mode === "login" ? "로그인" : "가입하고 로그인"}</button>
+          }}
+        >
+          <label>
+            아이디
+            <input
+              autoComplete="username"
+              value={username}
+              onChange={(event) => setUsername(event.target.value)}
+              required
+            />
+          </label>
+          {mode === "register" && (
+            <>
+              <label>
+                표시 이름
+                <input
+                  value={displayName}
+                  onChange={(event) => setDisplayName(event.target.value)}
+                  required
+                />
+              </label>
+              <label>
+                이메일 선택
+                <input
+                  type="email"
+                  value={email}
+                  onChange={(event) => setEmail(event.target.value)}
+                />
+              </label>
+            </>
+          )}
+          <label>
+            비밀번호
+            <input
+              type="password"
+              autoComplete={mode === "login" ? "current-password" : "new-password"}
+              value={password}
+              onChange={(event) => setPassword(event.target.value)}
+              minLength={10}
+              required
+            />
+          </label>
+          <button type="submit" className="primary" disabled={props.busy}>
+            {mode === "login" ? "로그인" : "가입하고 로그인"}
+          </button>
         </form>
       </div>
     );
@@ -403,102 +603,313 @@ function AccountTab(props: {
     <div className="account-sections">
       <section className="account-card">
         <h3>{props.user.display_name}</h3>
-        <p>@{props.user.username} · {TIER_LABELS[props.user.tier]} · {props.user.role === "admin" ? "관리자" : props.user.role === "moderator" ? "운영자" : "회원"}</p>
-        <button type="button" onClick={() => props.run(async () => {
-          await apiJson("/api/library/auth/logout", { method: "POST", headers: authHeaders(props.csrf, false) });
-          props.onSignedOut();
-        })}>로그아웃</button>
+        <p>
+          @{props.user.username} · {TIER_LABELS[props.user.tier]} ·{" "}
+          {props.user.role === "admin"
+            ? "관리자"
+            : props.user.role === "moderator"
+              ? "운영자"
+              : "회원"}
+        </p>
+        <button
+          type="button"
+          onClick={() =>
+            props.run(async () => {
+              await apiJson("/api/library/auth/logout", {
+                method: "POST",
+                headers: authHeaders(props.csrf, false),
+              });
+              props.onSignedOut();
+            })
+          }
+        >
+          로그아웃
+        </button>
       </section>
       <section className="account-card">
         <h3>비밀번호 변경</h3>
-        <form onSubmit={(event) => {
-          event.preventDefault();
-          props.run(async () => {
-            await apiJson("/api/library/auth/change-password", {
-              method: "POST", headers: authHeaders(props.csrf), body: JSON.stringify({ current_password: currentPassword, new_password: newPassword }),
+        <form
+          onSubmit={(event) => {
+            event.preventDefault();
+            props.run(async () => {
+              await apiJson("/api/library/auth/change-password", {
+                method: "POST",
+                headers: authHeaders(props.csrf),
+                body: JSON.stringify({
+                  current_password: currentPassword,
+                  new_password: newPassword,
+                }),
+              });
+              setCurrentPassword("");
+              setNewPassword("");
+              props.onSignedOut();
             });
-            setCurrentPassword(""); setNewPassword(""); props.onSignedOut();
-          });
-        }}>
-          <label>현재 비밀번호<input type="password" autoComplete="current-password" value={currentPassword} onChange={(event) => setCurrentPassword(event.target.value)} required /></label>
-          <label>새 비밀번호<input type="password" autoComplete="new-password" value={newPassword} onChange={(event) => setNewPassword(event.target.value)} minLength={10} required /></label>
-          <button type="submit" disabled={props.busy}>변경하고 다시 로그인</button>
+          }}
+        >
+          <label>
+            현재 비밀번호
+            <input
+              type="password"
+              autoComplete="current-password"
+              value={currentPassword}
+              onChange={(event) => setCurrentPassword(event.target.value)}
+              required
+            />
+          </label>
+          <label>
+            새 비밀번호
+            <input
+              type="password"
+              autoComplete="new-password"
+              value={newPassword}
+              onChange={(event) => setNewPassword(event.target.value)}
+              minLength={10}
+              required
+            />
+          </label>
+          <button type="submit" disabled={props.busy}>
+            변경하고 다시 로그인
+          </button>
         </form>
       </section>
       <section className="account-card danger-zone">
         <h3>회원 탈퇴</h3>
         <p>본인이 올린 MIDI와 공유 설정이 모두 삭제되며 되돌릴 수 없습니다.</p>
-        <form onSubmit={(event) => {
-          event.preventDefault();
-          if (!window.confirm("회원 계정과 업로드한 MIDI를 모두 삭제할까요?")) return;
-          props.run(async () => {
-            await apiJson("/api/library/auth/withdraw", {
-              method: "POST", headers: authHeaders(props.csrf), body: JSON.stringify({ password: withdrawPassword, confirmation: withdrawConfirmation }),
+        <form
+          onSubmit={(event) => {
+            event.preventDefault();
+            if (!window.confirm("회원 계정과 업로드한 MIDI를 모두 삭제할까요?")) return;
+            props.run(async () => {
+              await apiJson("/api/library/auth/withdraw", {
+                method: "POST",
+                headers: authHeaders(props.csrf),
+                body: JSON.stringify({
+                  password: withdrawPassword,
+                  confirmation: withdrawConfirmation,
+                }),
+              });
+              props.onSignedOut();
             });
-            props.onSignedOut();
-          });
-        }}>
-          <label>비밀번호<input type="password" value={withdrawPassword} onChange={(event) => setWithdrawPassword(event.target.value)} required /></label>
-          <label>확인 문구<input value={withdrawConfirmation} onChange={(event) => setWithdrawConfirmation(event.target.value)} placeholder="회원 탈퇴" required /></label>
-          <button type="submit" className="danger" disabled={props.busy}>회원 탈퇴</button>
+          }}
+        >
+          <label>
+            비밀번호
+            <input
+              type="password"
+              value={withdrawPassword}
+              onChange={(event) => setWithdrawPassword(event.target.value)}
+              required
+            />
+          </label>
+          <label>
+            확인 문구
+            <input
+              value={withdrawConfirmation}
+              onChange={(event) => setWithdrawConfirmation(event.target.value)}
+              placeholder="회원 탈퇴"
+              required
+            />
+          </label>
+          <button type="submit" className="danger" disabled={props.busy}>
+            회원 탈퇴
+          </button>
         </form>
       </section>
     </div>
   );
 }
 
-function UploadTab({ csrf, busy, run, onUploaded }: { csrf: string | null; busy: boolean; run: (action: () => Promise<void>) => Promise<void>; onUploaded: () => Promise<void> }) {
+function UploadTab({
+  csrf,
+  busy,
+  run,
+  onUploaded,
+}: {
+  csrf: string | null;
+  busy: boolean;
+  run: (action: () => Promise<void>) => Promise<void>;
+  onUploaded: () => Promise<void>;
+}) {
   const [visibility, setVisibility] = useState<MidiItem["visibility"]>("private");
   return (
-    <form className="upload-form" onSubmit={(event) => {
-      event.preventDefault();
-      const form = new FormData(event.currentTarget);
-      if (visibility === "public") form.set("min_tier", "0");
-      run(async () => {
-        const response = await fetch("/api/library/midi", { method: "POST", headers: authHeaders(csrf, false), body: form });
-        const data = await response.json().catch(() => ({}));
-        if (!response.ok) throw new Error(data.detail || "업로드하지 못했습니다");
-        event.currentTarget.reset();
-        setVisibility("private");
-        await onUploaded();
-      });
-    }}>
+    <form
+      className="upload-form"
+      onSubmit={(event) => {
+        event.preventDefault();
+        const form = new FormData(event.currentTarget);
+        if (visibility === "public") form.set("min_tier", "0");
+        run(async () => {
+          const response = await fetch("/api/library/midi", {
+            method: "POST",
+            headers: authHeaders(csrf, false),
+            body: form,
+          });
+          const data = await response.json().catch(() => ({}));
+          if (!response.ok) throw new Error(data.detail || "업로드하지 못했습니다");
+          event.currentTarget.reset();
+          setVisibility("private");
+          await onUploaded();
+        });
+      }}
+    >
       <h3>MIDI 업로드</h3>
-      <p>파일은 MIDI 헤더와 크기를 검사합니다. 저작권을 보유하거나 공유 허가를 받은 곡만 올려 주세요.</p>
-      <label className="wide">MIDI 파일<input type="file" name="file" accept=".mid,.midi" required /></label>
-      <label>곡 제목<input name="title" maxLength={120} required /></label>
-      <label>아티스트·작곡가<input name="artist" maxLength={80} /></label>
-      <label>난이도<select name="difficulty" defaultValue="beginner">{Object.entries(DIFFICULTY_LABELS).map(([value, label]) => <option value={value} key={value}>{label}</option>)}</select></label>
-      <label>형태<select name="arrangement" defaultValue="melody">{Object.entries(ARRANGEMENT_LABELS).map(([value, label]) => <option value={value} key={value}>{label}</option>)}</select></label>
-      <label>장르<input name="genre" placeholder="가요풍, 클래식, 재즈" maxLength={40} /></label>
-      <label>태그<input name="tags" placeholder="왼손, 겨울, 발라드" /></label>
-      <label>공개 범위<select name="visibility" value={visibility} onChange={(event) => setVisibility(event.target.value as MidiItem["visibility"])}>{Object.entries(VISIBILITY_LABELS).map(([value, label]) => <option value={value} key={value}>{label}</option>)}</select></label>
-      <label>최소 회원 등급<select name="min_tier" disabled={visibility === "public"} defaultValue="1"><option value="1">일반 회원</option><option value="2">우수 회원</option><option value="3">지도 회원</option><option value="4">관리자</option></select></label>
-      {visibility === "shared" && <label className="wide">공유할 회원 아이디<input name="shared_usernames" placeholder="user1, user2" /></label>}
-      <label className="wide">설명<textarea name="description" rows={3} maxLength={500} /></label>
-      <button type="submit" className="primary wide" disabled={busy}>업로드</button>
+      <p>
+        파일은 MIDI 헤더와 크기를 검사합니다. 저작권을 보유하거나 공유 허가를 받은 곡만 올려 주세요.
+      </p>
+      <label className="wide">
+        MIDI 파일
+        <input type="file" name="file" accept=".mid,.midi" required />
+      </label>
+      <label>
+        곡 제목
+        <input name="title" maxLength={120} required />
+      </label>
+      <label>
+        아티스트·작곡가
+        <input name="artist" maxLength={80} />
+      </label>
+      <label>
+        난이도
+        <select name="difficulty" defaultValue="beginner">
+          {Object.entries(DIFFICULTY_LABELS).map(([value, label]) => (
+            <option value={value} key={value}>
+              {label}
+            </option>
+          ))}
+        </select>
+      </label>
+      <label>
+        형태
+        <select name="arrangement" defaultValue="melody">
+          {Object.entries(ARRANGEMENT_LABELS).map(([value, label]) => (
+            <option value={value} key={value}>
+              {label}
+            </option>
+          ))}
+        </select>
+      </label>
+      <label>
+        장르
+        <input name="genre" placeholder="가요풍, 클래식, 재즈" maxLength={40} />
+      </label>
+      <label>
+        태그
+        <input name="tags" placeholder="왼손, 겨울, 발라드" />
+      </label>
+      <label>
+        공개 범위
+        <select
+          name="visibility"
+          value={visibility}
+          onChange={(event) => setVisibility(event.target.value as MidiItem["visibility"])}
+        >
+          {Object.entries(VISIBILITY_LABELS).map(([value, label]) => (
+            <option value={value} key={value}>
+              {label}
+            </option>
+          ))}
+        </select>
+      </label>
+      <label>
+        최소 회원 등급
+        <select name="min_tier" disabled={visibility === "public"} defaultValue="1">
+          <option value="1">일반 회원</option>
+          <option value="2">우수 회원</option>
+          <option value="3">지도 회원</option>
+          <option value="4">관리자</option>
+        </select>
+      </label>
+      {visibility === "shared" && (
+        <label className="wide">
+          공유할 회원 아이디
+          <input name="shared_usernames" placeholder="user1, user2" />
+        </label>
+      )}
+      <label className="wide">
+        설명
+        <textarea name="description" rows={3} maxLength={500} />
+      </label>
+      <button type="submit" className="primary wide" disabled={busy}>
+        업로드
+      </button>
     </form>
   );
 }
 
-function AdminTab({ csrf, busy, run, currentUserId }: { csrf: string | null; busy: boolean; run: (action: () => Promise<void>) => Promise<void>; currentUserId: number }) {
+function AdminTab({
+  csrf,
+  busy,
+  run,
+  currentUserId,
+}: {
+  csrf: string | null;
+  busy: boolean;
+  run: (action: () => Promise<void>) => Promise<void>;
+  currentUserId: number;
+}) {
   const [users, setUsers] = useState<User[]>([]);
-  const load = useCallback(() => apiJson<{ users: User[] }>("/api/library/admin/users").then((result) => setUsers(result.users)), []);
-  useEffect(() => { load().catch(() => setUsers([])); }, [load]);
-  const change = (id: number, patch: Partial<User>) => run(async () => {
-    const updated = await apiJson<User>(`/api/library/admin/users/${id}`, { method: "PATCH", headers: authHeaders(csrf), body: JSON.stringify(patch) });
-    setUsers((current) => current.map((item) => item.id === id ? updated : item));
-  });
+  const load = useCallback(
+    () =>
+      apiJson<{ users: User[] }>("/api/library/admin/users").then((result) =>
+        setUsers(result.users)
+      ),
+    []
+  );
+  useEffect(() => {
+    load().catch(() => setUsers([]));
+  }, [load]);
+  const change = (id: number, patch: Partial<User>) =>
+    run(async () => {
+      const updated = await apiJson<User>(`/api/library/admin/users/${id}`, {
+        method: "PATCH",
+        headers: authHeaders(csrf),
+        body: JSON.stringify(patch),
+      });
+      setUsers((current) => current.map((item) => (item.id === id ? updated : item)));
+    });
   return (
     <div className="admin-users">
       <h3>회원 관리</h3>
       <p>비밀번호 원문은 관리자도 볼 수 없습니다. 등급과 역할 및 이용 상태만 변경할 수 있습니다.</p>
       {users.map((account) => (
         <div className="admin-user-row" key={account.id}>
-          <div><strong>{account.display_name}</strong><span>@{account.username}{account.id === currentUserId ? " · 현재 계정" : ""}</span></div>
-          <select value={account.tier} disabled={busy} onChange={(event) => change(account.id, { tier: Number(event.target.value) })}>{[1, 2, 3, 4].map((tier) => <option value={tier} key={tier}>{TIER_LABELS[tier]}</option>)}</select>
-          <select value={account.role} disabled={busy || account.id === currentUserId} onChange={(event) => change(account.id, { role: event.target.value as User["role"] })}><option value="member">회원</option><option value="moderator">운영자</option><option value="admin">관리자</option></select>
-          <select value={account.status} disabled={busy || account.id === currentUserId} onChange={(event) => change(account.id, { status: event.target.value as User["status"] })}><option value="active">정상</option><option value="suspended">이용 중지</option></select>
+          <div>
+            <strong>{account.display_name}</strong>
+            <span>
+              @{account.username}
+              {account.id === currentUserId ? " · 현재 계정" : ""}
+            </span>
+          </div>
+          <select
+            value={account.tier}
+            disabled={busy}
+            onChange={(event) => change(account.id, { tier: Number(event.target.value) })}
+          >
+            {[1, 2, 3, 4].map((tier) => (
+              <option value={tier} key={tier}>
+                {TIER_LABELS[tier]}
+              </option>
+            ))}
+          </select>
+          <select
+            value={account.role}
+            disabled={busy || account.id === currentUserId}
+            onChange={(event) => change(account.id, { role: event.target.value as User["role"] })}
+          >
+            <option value="member">회원</option>
+            <option value="moderator">운영자</option>
+            <option value="admin">관리자</option>
+          </select>
+          <select
+            value={account.status}
+            disabled={busy || account.id === currentUserId}
+            onChange={(event) =>
+              change(account.id, { status: event.target.value as User["status"] })
+            }
+          >
+            <option value="active">정상</option>
+            <option value="suspended">이용 중지</option>
+          </select>
         </div>
       ))}
     </div>

frontend/src/index.css

@@ -58,6 +58,15 @@
   white-space: nowrap;
 }
 
+.library-account-button {
+  background: var(--color-surface-2);
+  color: var(--color-text);
+}
+
+.library-admin-button {
+  background: #334155;
+}
+
 .library-overlay {
   position: fixed;
   inset: 0;
@@ -92,9 +101,18 @@
   border-bottom: 1px solid var(--color-border);
 }
 
-.library-header > div { display: flex; flex-direction: column; gap: 4px; }
-.library-header strong { font-size: 20px; }
-.library-header span { color: var(--color-text-muted); font-size: 12px; }
+.library-header > div {
+  display: flex;
+  flex-direction: column;
+  gap: 4px;
+}
+.library-header strong {
+  font-size: 20px;
+}
+.library-header span {
+  color: var(--color-text-muted);
+  font-size: 12px;
+}
 .library-header button,
 .library-tabs button,
 .library-tag-filter button,
@@ -107,13 +125,40 @@
   cursor: pointer;
 }
 
-.library-header button { padding: 8px 14px; }
-.library-tabs { display: flex; gap: 6px; padding: 10px 18px; overflow-x: auto; border-bottom: 1px solid var(--color-border); }
-.library-tabs button { padding: 8px 14px; white-space: nowrap; }
+.library-header button {
+  padding: 8px 14px;
+}
+.library-tabs {
+  display: flex;
+  gap: 6px;
+  padding: 10px 18px;
+  overflow-x: auto;
+  border-bottom: 1px solid var(--color-border);
+}
+.library-tabs button {
+  padding: 8px 14px;
+  white-space: nowrap;
+}
 .library-tabs button.active,
-.account-mode button.active { background: var(--color-accent); color: #fff; border-color: transparent; }
-.library-message { margin: 10px 18px 0; padding: 10px 12px; border-radius: 8px; background: rgba(147, 51, 234, 0.12); color: var(--color-text); font-size: 13px; }
-.library-body { flex: 1; min-height: 0; overflow: auto; padding: 18px; }
+.account-mode button.active {
+  background: var(--color-accent);
+  color: #fff;
+  border-color: transparent;
+}
+.library-message {
+  margin: 10px 18px 0;
+  padding: 10px 12px;
+  border-radius: 8px;
+  background: rgba(147, 51, 234, 0.12);
+  color: var(--color-text);
+  font-size: 13px;
+}
+.library-body {
+  flex: 1;
+  min-height: 0;
+  overflow: auto;
+  padding: 18px;
+}
 
 .library-filters {
   display: grid;
@@ -135,30 +180,106 @@
 }
 
 .library-tag-filter,
-.library-tag-row { display: flex; flex-wrap: wrap; gap: 6px; }
-.library-tag-filter { padding: 12px 0; }
+.library-tag-row {
+  display: flex;
+  flex-wrap: wrap;
+  gap: 6px;
+}
+.library-tag-filter {
+  padding: 12px 0;
+}
 .library-tag-filter button,
-.library-tag-row button { padding: 5px 8px; font-size: 11px; }
-.library-tag-filter button.active { background: var(--color-accent); color: #fff; }
-.library-groups { display: grid; gap: 14px; }
-.library-group { border: 1px solid var(--color-border); border-radius: 14px; overflow: hidden; background: var(--color-surface-2); }
-.library-group-title { display: flex; justify-content: space-between; gap: 14px; padding: 14px 16px; border-bottom: 1px solid var(--color-border); }
-.library-group-title > div { display: flex; flex-direction: column; gap: 3px; }
+.library-tag-row button {
+  padding: 5px 8px;
+  font-size: 11px;
+}
+.library-tag-filter button.active {
+  background: var(--color-accent);
+  color: #fff;
+}
+.library-groups {
+  display: grid;
+  gap: 14px;
+}
+.library-group {
+  border: 1px solid var(--color-border);
+  border-radius: 14px;
+  overflow: hidden;
+  background: var(--color-surface-2);
+}
+.library-group-title {
+  display: flex;
+  justify-content: space-between;
+  gap: 14px;
+  padding: 14px 16px;
+  border-bottom: 1px solid var(--color-border);
+}
+.library-group-title > div {
+  display: flex;
+  flex-direction: column;
+  gap: 3px;
+}
 .library-group-title span,
-.library-group-title small { color: var(--color-text-muted); font-size: 12px; }
-.library-variants { display: grid; }
-.library-variant { display: flex; align-items: center; justify-content: space-between; gap: 18px; padding: 14px 16px; }
-.library-variant + .library-variant { border-top: 1px solid var(--color-border); }
-.library-variant-main { min-width: 0; }
-.library-variant-main > strong { display: block; font-size: 14px; }
+.library-group-title small {
+  color: var(--color-text-muted);
+  font-size: 12px;
+}
+.library-variants {
+  display: grid;
+}
+.library-variant {
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 18px;
+  padding: 14px 16px;
+}
+.library-variant + .library-variant {
+  border-top: 1px solid var(--color-border);
+}
+.library-variant-main {
+  min-width: 0;
+}
+.library-variant-main > strong {
+  display: block;
+  font-size: 14px;
+}
 .library-variant-main > span,
-.library-variant-main > small { display: block; margin-top: 3px; color: var(--color-text-muted); font-size: 11px; }
-.library-variant-main p { margin: 7px 0; font-size: 12px; line-height: 1.5; }
-.library-variant-actions { width: 150px; display: flex; flex-direction: column; gap: 7px; flex: 0 0 auto; }
+.library-variant-main > small {
+  display: block;
+  margin-top: 3px;
+  color: var(--color-text-muted);
+  font-size: 11px;
+}
+.library-variant-main p {
+  margin: 7px 0;
+  font-size: 12px;
+  line-height: 1.5;
+}
+.library-variant-actions {
+  width: 150px;
+  display: flex;
+  flex-direction: column;
+  gap: 7px;
+  flex: 0 0 auto;
+}
 .library-variant-actions button,
-.upload-form button { min-height: 38px; border: 0; border-radius: 8px; cursor: pointer; }
-.library-panel .primary { background: var(--color-accent); color: #fff; font-weight: 700; }
-.library-empty { padding: 48px; text-align: center; color: var(--color-text-muted); }
+.upload-form button {
+  min-height: 38px;
+  border: 0;
+  border-radius: 8px;
+  cursor: pointer;
+}
+.library-panel .primary {
+  background: var(--color-accent);
+  color: #fff;
+  font-weight: 700;
+}
+.library-empty {
+  padding: 48px;
+  text-align: center;
+  color: var(--color-text-muted);
+}
 
 .upload-form {
   display: grid;
@@ -169,45 +290,156 @@
 }
 .upload-form h3,
 .upload-form p,
-.upload-form .wide { grid-column: 1 / -1; }
-.upload-form p { margin: -4px 0 4px; color: var(--color-text-muted); font-size: 12px; }
+.upload-form .wide {
+  grid-column: 1 / -1;
+}
+.upload-form p {
+  margin: -4px 0 4px;
+  color: var(--color-text-muted);
+  font-size: 12px;
+}
 .upload-form label,
-.account-card label { display: flex; flex-direction: column; gap: 6px; color: var(--color-text-muted); font-size: 12px; }
+.account-card label {
+  display: flex;
+  flex-direction: column;
+  gap: 6px;
+  color: var(--color-text-muted);
+  font-size: 12px;
+}
 
-.account-sections { max-width: 720px; margin: 0 auto; display: grid; gap: 14px; }
-.account-card { max-width: 520px; margin: 0 auto; padding: 20px; border: 1px solid var(--color-border); border-radius: 14px; background: var(--color-surface-2); }
-.account-card h3 { margin: 0 0 8px; }
-.account-card p { color: var(--color-text-muted); font-size: 12px; line-height: 1.5; }
-.account-card form { display: grid; gap: 12px; }
-.account-card button { min-height: 38px; padding: 0 14px; }
-.account-mode { display: flex; gap: 6px; margin-bottom: 16px; }
-.account-mode button { flex: 1; }
-.danger-zone { border-color: rgba(220, 38, 38, 0.45); }
-.library-panel .danger { background: #b91c1c; color: #fff; border: 0; }
+.account-sections {
+  max-width: 720px;
+  margin: 0 auto;
+  display: grid;
+  gap: 14px;
+}
+.account-card {
+  max-width: 520px;
+  margin: 0 auto;
+  padding: 20px;
+  border: 1px solid var(--color-border);
+  border-radius: 14px;
+  background: var(--color-surface-2);
+}
+.account-card h3 {
+  margin: 0 0 8px;
+}
+.account-card p {
+  color: var(--color-text-muted);
+  font-size: 12px;
+  line-height: 1.5;
+}
+.account-card form {
+  display: grid;
+  gap: 12px;
+}
+.account-card button {
+  min-height: 38px;
+  padding: 0 14px;
+}
+.account-mode {
+  display: flex;
+  gap: 6px;
+  margin-bottom: 16px;
+}
+.account-mode button {
+  flex: 1;
+}
+.danger-zone {
+  border-color: rgba(220, 38, 38, 0.45);
+}
+.library-panel .danger {
+  background: #b91c1c;
+  color: #fff;
+  border: 0;
+}
 
-.admin-users { display: grid; gap: 10px; }
-.admin-users > p { margin: 0 0 8px; color: var(--color-text-muted); font-size: 12px; }
-.admin-user-row { display: grid; grid-template-columns: minmax(180px, 2fr) repeat(3, minmax(110px, 1fr)); gap: 8px; align-items: center; padding: 12px; border: 1px solid var(--color-border); border-radius: 10px; }
-.admin-user-row > div { display: flex; flex-direction: column; gap: 3px; }
-.admin-user-row span { color: var(--color-text-muted); font-size: 11px; }
+.admin-users {
+  display: grid;
+  gap: 10px;
+}
+.admin-users > p {
+  margin: 0 0 8px;
+  color: var(--color-text-muted);
+  font-size: 12px;
+}
+.admin-user-row {
+  display: grid;
+  grid-template-columns: minmax(180px, 2fr) repeat(3, minmax(110px, 1fr));
+  gap: 8px;
+  align-items: center;
+  padding: 12px;
+  border: 1px solid var(--color-border);
+  border-radius: 10px;
+}
+.admin-user-row > div {
+  display: flex;
+  flex-direction: column;
+  gap: 3px;
+}
+.admin-user-row span {
+  color: var(--color-text-muted);
+  font-size: 11px;
+}
 
 @media (max-width: 760px) {
-  .library-open-button { padding: 0 8px; font-size: 11px; }
-  .library-overlay { padding: 0; }
-  .library-panel { width: 100%; height: 100dvh; border: 0; border-radius: 0; }
-  .library-header { padding: 13px 14px; }
-  .library-header strong { font-size: 17px; }
-  .library-body { padding: 12px; }
-  .library-filters { grid-template-columns: repeat(2, minmax(0, 1fr)); }
-  .library-filters input { grid-column: 1 / -1; }
-  .library-variant { align-items: stretch; flex-direction: column; gap: 12px; }
-  .library-variant-actions { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
-  .upload-form { grid-template-columns: 1fr; }
+  .library-open-button {
+    padding: 0 8px;
+    font-size: 11px;
+  }
+  .library-account-button {
+    max-width: 82px;
+    overflow: hidden;
+    text-overflow: ellipsis;
+  }
+  .library-overlay {
+    padding: 0;
+  }
+  .library-panel {
+    width: 100%;
+    height: 100dvh;
+    border: 0;
+    border-radius: 0;
+  }
+  .library-header {
+    padding: 13px 14px;
+  }
+  .library-header strong {
+    font-size: 17px;
+  }
+  .library-body {
+    padding: 12px;
+  }
+  .library-filters {
+    grid-template-columns: repeat(2, minmax(0, 1fr));
+  }
+  .library-filters input {
+    grid-column: 1 / -1;
+  }
+  .library-variant {
+    align-items: stretch;
+    flex-direction: column;
+    gap: 12px;
+  }
+  .library-variant-actions {
+    width: 100%;
+    display: grid;
+    grid-template-columns: 1fr 1fr;
+  }
+  .upload-form {
+    grid-template-columns: 1fr;
+  }
   .upload-form h3,
   .upload-form p,
-  .upload-form .wide { grid-column: auto; }
-  .admin-user-row { grid-template-columns: 1fr 1fr; }
-  .admin-user-row > div { grid-column: 1 / -1; }
+  .upload-form .wide {
+    grid-column: auto;
+  }
+  .admin-user-row {
+    grid-template-columns: 1fr 1fr;
+  }
+  .admin-user-row > div {
+    grid-column: 1 / -1;
+  }
 }
 
 [data-theme="light"] {

frontend/src/views/PracticeView.tsx

@@ -6,6 +6,7 @@ import { TransportControls } from "../components/Transport/TransportControls";
 import { SettingsPanel } from "../components/Transport/SettingsPanel";
 import { DevicePanel } from "../components/DevicePanel/DevicePanel";
 import { LibraryPanel } from "../components/Library/LibraryPanel";
+import type { LibraryTab } from "../components/Library/LibraryPanel";
 import { useAppStore } from "../store/useAppStore";
 import type { LayoutMode } from "../store/useAppStore";
 import bus from "../engine/EventBus";
@@ -29,6 +30,12 @@ const TAB_TITLES: Record<LayoutMode, string> = {
 export function PracticeView() {
   const [settingsOpen, setSettingsOpen] = useState(false);
   const [libraryOpen, setLibraryOpen] = useState(false);
+  const [libraryInitialTab, setLibraryInitialTab] = useState<LibraryTab>("browse");
+
+  const openLibrary = (tab: LibraryTab) => {
+    setLibraryInitialTab(tab);
+    setLibraryOpen(true);
+  };
 
   const {
     loadMidiFile,
@@ -236,13 +243,29 @@ export function PracticeView() {
         {/* Right: MIDI device chip + theme toggle + settings gear */}
         <div className="flex items-center gap-1.5" style={{ marginLeft: "auto" }}>
           <button
-            onClick={() => setLibraryOpen(true)}
+            onClick={() => openLibrary("browse")}
             title="곡 보관함 열기"
             aria-label="곡 보관함 열기"
             className="library-open-button"
           >
             곡 보관함
           </button>
+          <button
+            onClick={() => openLibrary("account")}
+            title="로그인 또는 회원 가입"
+            aria-label="로그인 또는 회원 가입"
+            className="library-open-button library-account-button"
+          >
+            로그인·회원가입
+          </button>
+          <button
+            onClick={() => openLibrary("admin")}
+            title="관리자 패널 열기"
+            aria-label="관리자 패널 열기"
+            className="library-open-button library-admin-button"
+          >
+            관리자
+          </button>
           <DevicePanel />
           <button
             onClick={() => updateSettings({ theme: settings.theme === "dark" ? "light" : "dark" })}
@@ -344,7 +367,12 @@ export function PracticeView() {
       {/* ── Settings panel (managed here, gear is in header) ───────────────── */}
       <SettingsPanel open={settingsOpen} onClose={() => setSettingsOpen(false)} />
 
-      <LibraryPanel open={libraryOpen} onClose={() => setLibraryOpen(false)} onLoad={loadFile} />
+      <LibraryPanel
+        open={libraryOpen}
+        initialTab={libraryInitialTab}
+        onClose={() => setLibraryOpen(false)}
+        onLoad={loadFile}
+      />
     </div>
   );
 }

frontend/vite.config.ts

@@ -57,6 +57,11 @@ export default defineConfig({
       },
 
       workbox: {
+        // 새 배포를 발견하면 대기 단계 없이 바로 활성화하고 열린 화면을
+        // 즉시 관리한다. 사용자가 오래된 회원 메뉴를 계속 보지 않게 한다.
+        skipWaiting: true,
+        clientsClaim: true,
+        cleanupOutdatedCaches: true,
         // Precache built static assets so the shell loads instantly + works offline.
         globPatterns: ["**/*.{js,css,html,ico,png,svg,woff2}"],