fix: complete TechLog migration evidence

src/features/tech-log/presentation/public/pages/public-not-found-page.tsx

@@ -1,34 +1,11 @@
-import { useSourceCompatiblePublicNotFound } from "../public-not-found-layout.tsx";
-
 export function PublicNotFoundPage() {
-  useSourceCompatiblePublicNotFound();
   return (
-    <>
-      <style>{`
-        html { background: white; color: black; }
-        body {
-          min-width: 0;
-          margin: 8px;
-          overflow: visible;
-          background: transparent;
-          color: black;
-          font-family: "Times New Roman";
-          font-size: 16px;
-          line-height: normal;
-          text-rendering: auto;
-          word-break: normal;
-        }
-        pre.tech-log-plain-not-found {
-          margin: 13px 0;
-          color: black;
-          font-family: monospace;
-          font-size: 13px;
-          line-height: normal;
-          white-space: pre-wrap;
-          overflow-wrap: break-word;
-        }
-      `}</style>
-      <pre className="tech-log-plain-not-found">Not Found</pre>
-    </>
+    <main id="main-content" className="shell public-index-page">
+      <header className="public-page-header">
+        <p className="section-kicker">404</p>
+        <h1>페이지를 찾을 수 없습니다.</h1>
+        <p>요청한 공개 페이지가 없습니다.</p>
+      </header>
+    </main>
   );
 }

src/features/tech-log/presentation/public/public-not-found-layout.tsx

@@ -1,18 +0,0 @@
-import {
-  createContext,
-  useContext,
-  useLayoutEffect,
-} from "react";
-
-type SetNestedNotFound = (active: boolean) => void;
-
-export const PublicNotFoundLayoutContext =
-  createContext<SetNestedNotFound | null>(null);
-
-export function useSourceCompatiblePublicNotFound(): void {
-  const setNestedNotFound = useContext(PublicNotFoundLayoutContext);
-  useLayoutEffect(() => {
-    setNestedNotFound?.(true);
-    return () => setNestedNotFound?.(false);
-  }, [setNestedNotFound]);
-}

src/features/tech-log/presentation/public/public-shell.tsx

@@ -1,9 +1,8 @@
-import { type ReactNode, useCallback, useState } from "react";
+import { type ReactNode } from "react";
 import { Link } from "react-router-dom";
 
 import { publicSiteConfig } from "../../contracts/public-site-config.ts";
 import { SiteHeader } from "./components/site-header.tsx";
-import { PublicNotFoundLayoutContext } from "./public-not-found-layout.tsx";
 
 type PublicShellProps = {
   children: ReactNode;
@@ -11,37 +10,29 @@ type PublicShellProps = {
 };
 
 export function PublicShell({ children, currentPath }: PublicShellProps) {
-  const [nestedNotFound, setNestedNotFound] = useState(false);
-  const updateNestedNotFound = useCallback((active: boolean) => {
-    setNestedNotFound(active);
-  }, []);
   return (
-    <PublicNotFoundLayoutContext.Provider value={updateNestedNotFound}>
-      {nestedNotFound ? children : (
-        <div className="site-frame">
-          <a className="skip-link" href="#main-content">
-            본문으로 건너뛰기
-          </a>
-          <SiteHeader currentPath={currentPath} />
+    <div className="site-frame">
+      <a className="skip-link" href="#main-content">
+        본문으로 건너뛰기
+      </a>
+      <SiteHeader currentPath={currentPath} />
 
-          {children}
+      {children}
 
-          <footer className="site-footer">
-            <div className="shell footer-inner">
-              <div>
-                <p className="footer-name">{publicSiteConfig.operator}</p>
-                <p>{publicSiteConfig.identityStatement}</p>
-              </div>
-              <div className="footer-links">
-                <Link to={publicSiteConfig.contactPath}>
-                  {publicSiteConfig.contactLabel}
-                </Link>
-                <Link to={publicSiteConfig.latestRelease}>최신 Release</Link>
-              </div>
-            </div>
-          </footer>
+      <footer className="site-footer">
+        <div className="shell footer-inner">
+          <div>
+            <p className="footer-name">{publicSiteConfig.operator}</p>
+            <p>{publicSiteConfig.identityStatement}</p>
+          </div>
+          <div className="footer-links">
+            <Link to={publicSiteConfig.contactPath}>
+              {publicSiteConfig.contactLabel}
+            </Link>
+            <Link to={publicSiteConfig.latestRelease}>최신 Release</Link>
+          </div>
         </div>
-      )}
-    </PublicNotFoundLayoutContext.Provider>
+      </footer>
+    </div>
   );
 }