refactor: reorganize directory structure into src/

Move all source code directories into src/ for cleaner project structure:
- pages/, components/, utils/, config/, providers/, types/, lib/, assets/, entrypoints/ → src/
- Use WXT srcDir config to resolve @/ alias to src/
- Update tsconfig, vitest, eslint, tailwind configs
- Remove scattered README.md files from subdirectories
- Update documentation (AGENTS.md, CODING_STANDARDS.md, README.md)
- Fix pre-existing lint error in RouterProvider.tsx

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

src/entrypoints/rightClickRestorer.content.ts

@@ -0,0 +1,194 @@
+import { MessageAction, onMessage, sendMessage } from '@/utils/messages';
+
+const BADGE_ID = 'testing-tools-right-click-restorer-badge';
+const BADGE_STYLE_ID = 'testing-tools-right-click-restorer-badge-style';
+
+let isRestored = false;
+
+function updateBadge(): void {
+  const badge = document.getElementById(BADGE_ID);
+  if (badge) {
+    badge.style.opacity = isRestored ? '1' : '0';
+  }
+}
+
+function createBadge(): void {
+  if (document.getElementById(BADGE_ID)) return;
+
+  if (!document.getElementById(BADGE_STYLE_ID)) {
+    const style = document.createElement('style');
+    style.id = BADGE_STYLE_ID;
+    style.textContent = `
+      #${BADGE_ID} {
+        position: fixed;
+        bottom: 16px;
+        right: 16px;
+        z-index: 2147483646;
+        padding: 6px 12px;
+        background: #2e7d32;
+        color: #ffffff;
+        border-radius: 20px;
+        font-size: 12px;
+        font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
+        box-shadow: 0 2px 8px rgba(0,0,0,0.2);
+        opacity: 0;
+        transition: opacity 0.2s ease-out;
+        pointer-events: none;
+        user-select: none;
+      }
+      @media (prefers-color-scheme: dark) {
+        #${BADGE_ID} {
+          background: #4caf50;
+          box-shadow: 0 2px 8px rgba(0,0,0,0.4);
+        }
+      }
+    `;
+    document.head.appendChild(style);
+  }
+
+  const badge = document.createElement('div');
+  badge.id = BADGE_ID;
+  badge.textContent = '\u53f3\u952e\u5df2\u89e3\u9501';
+  document.body.appendChild(badge);
+}
+
+/* ======================== Main World 注入 ======================== */
+
+async function injectMainWorldScript(): Promise<void> {
+  try {
+    const response = await sendMessage(MessageAction.INJECT_MAIN_WORLD_SCRIPT);
+    if (!response.success) {
+      console.error('[RightClickRestorer] Background injection failed:', response.message);
+    }
+  } catch (err) {
+    console.error('[RightClickRestorer] Failed to request main world injection:', err);
+  }
+}
+
+/* ======================== Isolated World 事件拦截 ======================== */
+
+function installEventIntercepts(): void {
+  window.addEventListener(
+    'contextmenu',
+    (e) => {
+      if (!isRestored) return;
+      e.stopPropagation();
+    },
+    true,
+  );
+
+  // 部分网站在 mousedown 阶段阻止 contextmenu
+  window.addEventListener(
+    'mousedown',
+    (e) => {
+      if (!isRestored) return;
+      if (e.button === 2 || (e.buttons & 2) !== 0) {
+        e.stopPropagation();
+      }
+    },
+    true,
+  );
+}
+
+/* ======================== 遮罩层穿透 ======================== */
+
+const MEDIA_TAGS = new Set(['IMG', 'VIDEO', 'CANVAS', 'SVG']);
+
+function initMousePenetration(): void {
+  window.addEventListener(
+    'mousedown',
+    (e) => {
+      if (!isRestored || e.button !== 2) return;
+
+      const elements = document.elementsFromPoint(e.clientX, e.clientY);
+      if (!elements.length) return;
+
+      let targetMedia: HTMLElement | null = null;
+      for (const el of elements) {
+        if (MEDIA_TAGS.has(el.tagName)) {
+          targetMedia = el as HTMLElement;
+          break;
+        }
+      }
+
+      if (!targetMedia) return;
+
+      const modified: Array<{ el: HTMLElement; original: string | null }> = [];
+      let foundMedia = false;
+
+      for (const el of elements) {
+        const htmlEl = el as HTMLElement;
+
+        if (el === targetMedia) {
+          foundMedia = true;
+          const original = htmlEl.style.pointerEvents || null;
+          htmlEl.style.setProperty('pointer-events', 'all', 'important');
+          modified.push({ el: htmlEl, original });
+          continue;
+        }
+
+        if (!foundMedia) {
+          const original = htmlEl.style.pointerEvents || null;
+          htmlEl.style.setProperty('pointer-events', 'none', 'important');
+          modified.push({ el: htmlEl, original });
+        }
+      }
+
+      setTimeout(() => {
+        for (const { el, original } of modified) {
+          if (original === null || original === '') {
+            el.style.removeProperty('pointer-events');
+          } else {
+            el.style.pointerEvents = original;
+          }
+        }
+      }, 300);
+    },
+    true,
+  );
+}
+
+/* ======================== 激活保护 ======================== */
+
+async function activateProtection(): Promise<void> {
+  if (isRestored) return;
+
+  await injectMainWorldScript();
+
+  // 再次检查，防止并发调用导致重复注册
+  if (isRestored) return;
+
+  installEventIntercepts();
+  initMousePenetration();
+
+  isRestored = true;
+  updateBadge();
+}
+
+/* ======================== 消息通信 ======================== */
+
+function initMessaging(): void {
+  onMessage(MessageAction.RESTORE_RIGHT_CLICK, async () => {
+    await activateProtection();
+    return { success: true, restored: isRestored };
+  });
+
+  onMessage(MessageAction.QUERY_RIGHT_CLICK_STATUS, () => {
+    return { success: true, restored: isRestored };
+  });
+}
+
+/* ======================== 入口 ======================== */
+
+export default defineContentScript({
+  matches: ['<all_urls>'],
+  runAt: 'document_start',
+  main() {
+    if (document.readyState === 'loading') {
+      document.addEventListener('DOMContentLoaded', createBadge, { once: true });
+    } else {
+      createBadge();
+    }
+    initMessaging();
+  },
+});