启动器：接入 Gitea Releases 自动检查更新 + 更新日志页

- server.py: 新增 /api/update/check、/api/update/changelog 接口，
  用标准库 urllib 请求自托管仓库 Lingbao/90CNServer 的 Releases，
  带 5 分钟缓存与 8 秒超时；本地版本号写死 v2026.11.04
- shell.js: 版本卡片改为动态读取远程最新 tag，发现新版本绿色可点击
  跳转；新增 loadChangelog 渲染发布记录
- index.html/shell.css: 更新日志页改为动态容器，补充卡片样式

launcher/server.py

@@ -26,6 +26,7 @@ import uuid
 import webbrowser
 
 from http.server import BaseHTTPRequestHandler, ThreadingHTTPServer
+from urllib.request import Request, urlopen
 from urllib.parse import urlparse, parse_qs
 
 from db import DNFDatabase, set_gm_config
@@ -40,6 +41,11 @@ DETACHED_PROCESS = 0x00000008
 
 DEFAULT_PORT = 19527  # 启动器本地端口
 
+# 更新检查配置：Gitea 自托管仓库的 Releases 地址
+UPDATE_REPO_API = "https://git.hanfuit.com/api/v1/repos/Lingbao/90CNServer/releases"
+UPDATE_REPO_WEB = "https://git.hanfuit.com/Lingbao/90CNServer/releases"
+CURRENT_VERSION = "v2026.11.04"  # 本地当前版本号
+
 
 def base_dir():
     """程序所在目录（源码运行时 = 脚本目录，冻结运行时 = exe 目录）。"""
@@ -274,6 +280,51 @@ def log(msg):
     _logq.put(str(msg))
 
 
+# ------------------------------------------------------------------ 更新检查
+_update_cache = {"ts": 0.0, "releases": None, "error": None}
+_update_lock = threading.Lock()
+
+
+def _fetch_releases(force=False):
+    """拉取 Gitea Releases 列表（带 5 分钟缓存）。"""
+    now = time.time()
+    with _update_lock:
+        if not force and _update_cache["ts"] and now - _update_cache["ts"] < 300:
+            return _update_cache["releases"], _update_cache["error"]
+    try:
+        req = Request(UPDATE_REPO_API, headers={
+            "User-Agent": "DNF90Launcher/2.0",
+            "Accept": "application/json",
+        })
+        with urlopen(req, timeout=8) as resp:
+            data = json.loads(resp.read().decode("utf-8"))
+        releases = data if isinstance(data, list) else []
+        with _update_lock:
+            _update_cache.update(ts=now, releases=releases, error=None)
+        return releases, None
+    except Exception as e:
+        with _update_lock:
+            _update_cache.update(ts=now, releases=None, error=str(e))
+        return None, str(e)
+
+
+def _release_summary(rel):
+    """把一个 release 对象规整成前端需要的字段。"""
+    return {
+        "tag": rel.get("tag_name") or rel.get("name") or "",
+        "name": rel.get("name") or rel.get("tag_name") or "",
+        "body": rel.get("body") or "",
+        "published_at": rel.get("published_at") or "",
+        "prerelease": bool(rel.get("prerelease")),
+        "html_url": rel.get("html_url") or UPDATE_REPO_WEB,
+        "assets": [
+            {"name": a.get("name"), "size": a.get("size"),
+             "download_url": a.get("browser_download_url")}
+            for a in (rel.get("assets") or [])
+        ],
+    }
+
+
 def flow_start_game(account_username=None):
     """一键开始游戏；account_username 为空时使用默认账号。"""
     log("== 开始游戏 ==")
@@ -515,6 +566,10 @@ class Handler(BaseHTTPRequestHandler):
             self._api_logs()
         elif path == "/api/gm/health":
             self._api_gm_health()
+        elif path == "/api/update/check":
+            self._api_update_check()
+        elif path == "/api/update/changelog":
+            self._api_update_changelog(qs)
         elif path == "/api/accounts-config":
             self._api_accounts_config()
         # GM 只读接口
@@ -685,6 +740,44 @@ class Handler(BaseHTTPRequestHandler):
             "native_available": NATIVE is not None,
         })
 
+    def _api_update_check(self):
+        """检查最新发布版本（对比本地 CURRENT_VERSION）。"""
+        releases, err = _fetch_releases()
+        if err:
+            self._json({
+                "ok": True,
+                "current": CURRENT_VERSION,
+                "latest": None,
+                "has_update": False,
+                "error": err,
+            })
+            return
+        latest = releases[0] if releases else None
+        latest_tag = (latest.get("tag_name") or "").lstrip("v") if latest else ""
+        current = CURRENT_VERSION.lstrip("v")
+        self._json({
+            "ok": True,
+            "current": CURRENT_VERSION,
+            "latest": latest.get("tag_name") if latest else None,
+            "has_update": bool(latest_tag) and latest_tag != current,
+            "latest_url": latest.get("html_url") if latest else UPDATE_REPO_WEB,
+            "published_at": latest.get("published_at") if latest else None,
+        })
+
+    def _api_update_changelog(self, qs):
+        """获取所有发布的更新日志。"""
+        force = qs.get("force", ["0"])[0] == "1"
+        releases, err = _fetch_releases(force=force)
+        if err:
+            self._json({"ok": False, "error": err, "releases": []})
+            return
+        self._json({
+            "ok": True,
+            "current": CURRENT_VERSION,
+            "releases": [_release_summary(r) for r in (releases or [])],
+            "web_url": UPDATE_REPO_WEB,
+        })
+
     def _api_logs(self):
         logs = []
         while True: