chore(unity): 固定Unity CLI Loop本地包并移除UnitySkills依赖

Client/Packages/io.github.hatayama.uloopmcp/FT_PATCHES.md

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+# FT Vendored uloop Package
+
+- Upstream: `https://github.com/hatayama/unity-cli-loop.git`
+- Tag: `v2.2.0`
+- Commit: `1dbd4435e872a7f33904bb024062f2abb987eb12`
+- Exported path: `Packages/src`
+- Target Editor: Unity `2022.3.62f2c1`
+- Vendored on: `2026-07-30`
+
+## FT patches
+
+FT keeps the upstream asset-import worker guards and also treats
+`Application.isBatchMode` as a background process in:
+
+- `Editor/Server/McpServerController.cs`
+- `Editor/Core/ApplicationServices/DomainReloadDetectionService.cs`
+
+This prevents server recovery and domain-reload hooks from starting in CI,
+batch imports, or asset-import workers. The FT manifest does not add the
+optional Input System package. No upstream agent skills were installed into
+`.agents/skills`; only the Unity package exported from `Packages/src` was
+vendored here.