桌面 GUI 外链修复 + 主题顺序调整（含结构扁平化进行中的工作区基线）

- 集成 tauri-plugin-opener：Cargo/lib.rs/capabilities/npm 四处接线，新增 src/openExternal.ts（桌面走 opener，浏览器回退 window.open，相对路径绝对化）
- 关于页 4 个链接、活动栏官网菜单、代理错误横幅 2 处健康检查链接全部改走 openExternal，桌面端可正常跳转
- 设置→外观 主题顺序调整为 深色/浅色/跟随系统
- release 二进制重编并验证（浏览器实测关于页链接可开文档页）
- 附带工作区中未提交的扁平化重构现状（另一会话进行中）
- homepage 落地页与文档终检通过（8787 / 与 /docs 双 200）

server/internal/store/published_docs.go

@@ -0,0 +1,56 @@
+package store
+
+import (
+	"database/sql"
+	"errors"
+	"time"
+)
+
+type PublishedDoc struct {
+	ProjectID string `json:"projectId"`
+	Name      string `json:"name"`
+	Token     string `json:"token"`
+	Content   string `json:"-"`
+	UpdatedAt int64  `json:"updatedAt"`
+}
+
+func (s *Store) PublishedDocs() ([]PublishedDoc, error) {
+	rows, err := s.db.Query(`SELECT project_id,name,token,updated_at FROM published_docs ORDER BY name`)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+	docs := []PublishedDoc{}
+	for rows.Next() {
+		var doc PublishedDoc
+		if err := rows.Scan(&doc.ProjectID, &doc.Name, &doc.Token, &doc.UpdatedAt); err != nil {
+			return nil, err
+		}
+		docs = append(docs, doc)
+	}
+	return docs, rows.Err()
+}
+
+func (s *Store) PublishDoc(projectID, name, content string) (PublishedDoc, error) {
+	var token string
+	err := s.db.QueryRow(`SELECT token FROM published_docs WHERE project_id=?`, projectID).Scan(&token)
+	if errors.Is(err, sql.ErrNoRows) {
+		token = newMockToken()
+	} else if err != nil {
+		return PublishedDoc{}, err
+	}
+	doc := PublishedDoc{ProjectID: projectID, Name: name, Token: token, UpdatedAt: time.Now().Unix()}
+	_, err = s.db.Exec(`INSERT INTO published_docs(project_id,name,token,content,updated_at) VALUES(?,?,?,?,?) ON CONFLICT(project_id) DO UPDATE SET name=excluded.name,content=excluded.content,updated_at=excluded.updated_at`, projectID, name, token, content, doc.UpdatedAt)
+	return doc, err
+}
+
+func (s *Store) PublishedDocByToken(token string) (PublishedDoc, error) {
+	var doc PublishedDoc
+	err := s.db.QueryRow(`SELECT project_id,name,token,content,updated_at FROM published_docs WHERE token=?`, token).Scan(&doc.ProjectID, &doc.Name, &doc.Token, &doc.Content, &doc.UpdatedAt)
+	return doc, err
+}
+
+func (s *Store) RevokeDoc(projectID string) error {
+	_, err := s.db.Exec(`DELETE FROM published_docs WHERE project_id=?`, projectID)
+	return err
+}