fix: keep bundled DS Web links relocatable

Preserve npm relative symlinks while preparing the desktop DS Web resources.
The previous copy rewrote CLI links to build-machine absolute paths, causing
both macOS targets to fail strict code-signature verification. The regression
runs the production preparation and builder matcher, removes the installation
and staging trees, and verifies the final link remains readable.

Recover the unpublished Desktop 0.15.0 as 0.15.1 without moving its tag.
Agent stays 0.15.0 and requires Desktop 0.15.1. Carry the unpublished notes
forward once and align the bilingual feature matrices and upgrade guidance.

Validation: complete frozen Linux tree 5372 passed, 51 skipped; Windows
packaging checks 45 passed and one POSIX-only test skipped. Typecheck, lint,
and bilingual release-note validation passed. Native macOS signing remains
an independent release check. Agent Runtime implementations are unaffected.

Release note: 修复本地 DS Web 随包依赖的链接复制，避免 macOS 安装包签名校验失败。

resources/release-notes.json

@@ -2,7 +2,7 @@
   "formatVersion": 1,
   "releases": [
     {
-      "version": "0.15.0",
+      "version": "0.15.1",
       "releasedAt": "2026-09-28",
       "notes": {
         "zh-CN": {
@@ -24,7 +24,7 @@
           ],
           "notices": [
             "首次启动会将数据库升级至 schema 48。升级前请备份完整用户数据，包括数据库及相邻 `notes/` 目录；旧客户端不能打开升级后的数据库，回退需使用升级前备份。",
-            "远程用户请先升级 Desktop 至 **0.15.0**，再下载并更新 Host 上的 Agent **0.15.0**。已有进程不会热更新，Agent 独立发布，不替代桌面端 Latest。",
+            "远程用户请先升级 Desktop 至 **0.15.1**，再下载并更新 Host 上的 Agent **0.15.0**。已有进程不会热更新，Agent 独立发布，不替代桌面端 Latest。",
             "原生客户端仍为预览，其 Skills/MCP 与 GoodBuddy 会话能力并非完全等价；Continue 和 DS Web 首次启动可能需要准备标准 Node 环境。真实模型请求可能产生费用，其他平台与安装包验收以本次发布流程结果为准。"
           ]
         },
@@ -47,7 +47,7 @@
           ],
           "notices": [
             "First launch upgrades the database to schema 48. Back up complete user data, including the database and adjacent `notes/` directory, before upgrading; older clients cannot open the upgraded database, so rollback requires a pre-upgrade backup.",
-            "Remote users should upgrade Desktop to **0.15.0** before downloading and updating Hosts to Agent **0.15.0**. Existing processes are not hot-updated, and the independent Agent release does not replace Desktop Latest.",
+            "Remote users should upgrade Desktop to **0.15.1** before downloading and updating Hosts to Agent **0.15.0**. Existing processes are not hot-updated, and the independent Agent release does not replace Desktop Latest.",
             "Native clients remain a preview and do not offer full parity with GoodBuddy conversation Skills/MCP capabilities; Continue and DS Web may need to prepare a standard Node environment on first launch. Real model requests may incur charges, and other-platform and packaged-app acceptance depend on this release's validation results."
           ]
         }