fix(mindspace): 修复删除时无法解析 MySQL JSON 导致页面复活

source_snapshot_json 在 mysql2 中已是对象，JSON.parse 失败会使 relative_path 丢失、工作区 HTML 未清理；同步后页面重新出现。

Co-authored-by: Cursor <cursoragent@cursor.com>

mindspace-page-sync.mjs

@@ -52,6 +52,16 @@ async function findPageByWorkspaceRelativePath(pool, userId, relativePath) {
   return { id: row.id, updatedAt: Number(row.updated_at ?? 0) };
 }
 
+function parseJsonColumn(value, fallback = {}) {
+  if (value == null || value === '') return { ...fallback };
+  if (typeof value === 'object' && !Buffer.isBuffer(value)) return value;
+  try {
+    return JSON.parse(String(value));
+  } catch {
+    return { ...fallback };
+  }
+}
+
 async function loadIndexedWorkspacePages(pool, userId) {
   const [rows] = await pool.query(
     `SELECT p.id, p.updated_at, p.source_asset_id, pv.source_snapshot_json
@@ -62,12 +72,7 @@ async function loadIndexedWorkspacePages(pool, userId) {
   );
   const byPath = new Map();
   for (const row of rows) {
-    let snapshot = {};
-    try {
-      snapshot = JSON.parse(row.source_snapshot_json ?? '{}');
-    } catch {
-      snapshot = {};
-    }
+    const snapshot = parseJsonColumn(row.source_snapshot_json);
     const relativePath = normalizePublicHtmlPath(snapshot.relative_path);
     if (relativePath) {
       byPath.set(relativePath, {

mindspace-pages.mjs

@@ -29,6 +29,16 @@ function asNumber(value) {
   return Number(value ?? 0);
 }
 
+export function parseJsonColumn(value, fallback = {}) {
+  if (value == null || value === '') return { ...fallback };
+  if (typeof value === 'object' && !Buffer.isBuffer(value)) return value;
+  try {
+    return JSON.parse(String(value));
+  } catch {
+    return { ...fallback };
+  }
+}
+
 function pageError(message, code, details) {
   return Object.assign(new Error(message), { code, details });
 }
@@ -730,7 +740,7 @@ export function createPageService(pool, options = {}) {
     );
     let snapshot = {};
     try {
-      snapshot = JSON.parse(rows[0]?.source_snapshot_json ?? '{}');
+      snapshot = parseJsonColumn(rows[0]?.source_snapshot_json);
     } catch {
       snapshot = {};
     }
@@ -1084,7 +1094,7 @@ export function createPageService(pool, options = {}) {
          LIMIT 1`,
         [pageId, userId],
       );
-      const snapshot = JSON.parse(rows[0]?.source_snapshot_json ?? '{}');
+      const snapshot = parseJsonColumn(rows[0]?.source_snapshot_json);
       workspaceHtmlRelativePath = snapshot.relative_path ?? null;
     } catch {
       workspaceHtmlRelativePath = null;
@@ -1166,7 +1176,10 @@ export function createPageService(pool, options = {}) {
       publishDir: workspacePublishDir,
       htmlRelativePath: workspaceHtmlRelativePath,
       html: page.content ?? '',
-    }).catch(() => ({ removed: [], skipped: [] }));
+    }).catch((error) => {
+      console.warn('[MindSpace] workspace purge failed:', error?.message ?? error);
+      return { removed: [], skipped: [] };
+    });
 
     return { ...result, workspaceFilesRemoved: purgeResult.removed ?? [] };
   };
@@ -1190,7 +1203,7 @@ export function createPageService(pool, options = {}) {
     const content = await fs.readFile(storagePath, 'utf8');
     let snapshot = {};
     try {
-      snapshot = JSON.parse(row.source_snapshot_json ?? '{}');
+      snapshot = parseJsonColumn(row.source_snapshot_json);
     } catch {
       snapshot = {};
     }
@@ -1375,6 +1388,7 @@ export const pageInternals = {
   escapeHtml,
   normalizePageInput,
   normalizeListPageFilters,
+  parseJsonColumn,
   renderContent,
   renderPreviewHtml,
   renderHtmlPreview,

mindspace-pages.test.mjs

@@ -2,6 +2,16 @@ import assert from 'node:assert/strict';
 import test from 'node:test';
 import { pageInternals } from './mindspace-pages.mjs';
 
+test('parseJsonColumn accepts mysql json objects and strings', () => {
+  const objectValue = { relative_path: 'public/demo.html', auto_synced: true };
+  assert.deepEqual(pageInternals.parseJsonColumn(objectValue), objectValue);
+  assert.deepEqual(
+    pageInternals.parseJsonColumn(JSON.stringify(objectValue)),
+    objectValue,
+  );
+  assert.deepEqual(pageInternals.parseJsonColumn(null, { ok: true }), { ok: true });
+});
+
 test('normalizePageInput trims values and constrains templates', () => {
   const result = pageInternals.normalizePageInput({
     title: '  页面标题  ',