docs: remove standalone file reference upgrade guide

docs/upgrade-guide/v0.2.1-rc.2/desktop-file-reference-prompt/guide.i18n.yaml

@@ -1,16 +0,0 @@
-# Bilingual-pair consistency record for guide.md (docs/i18n/README.md): per heading
-# section, a hash of its English and Chinese blocks outside code blocks and generated regions.
-# After editing either side, bring the other along and re-record with:
-#   pnpm run verify-translation-pairing --write docs/upgrade-guide/v0.2.1-rc.2/desktop-file-reference-prompt/guide.md
-/:
-  en: 8f4956155158675c
-  zh: 7342882a5cdb0e76
-/desktop-file-reference-prompt-composition:
-  en: 8606ac4d8345abc7
-  zh: 7d0c19f9b13d099c
-/desktop-file-reference-prompt-composition/change:
-  en: e714b8ead2c9b175
-  zh: 17a0ffd2ccf1454c
-/desktop-file-reference-prompt-composition/migration:
-  en: a64f6caf032b818d
-  zh: 0cecbc55075c471b

docs/upgrade-guide/v0.2.1-rc.2/desktop-file-reference-prompt/guide.md

@@ -1,18 +0,0 @@
----
-kind: upgrade-guide
-description: File-reference guidance moves from the Web UI plugin to a shared prompt row.
----
-
-# Desktop file-reference prompt composition
-
-English | [中文](guide.zh.md)
-
-## Change
-
-The Web bundle now mounts `@deepseek-ai/dsh-tool-present/prompt` as `deliverable-file-references`. Previously `@deepseek-ai/dsh-client-ui-deliverables` registered that guidance. Default Web behavior is unchanged; custom compositions and patches that disable the UI row need to address the prompt separately.
-
-## Migration
-
-1. In a custom composition that mounts `dsh-client-ui-deliverables` directly, add a row named `@deepseek-ai/dsh-tool-present/prompt` to retain the guidance.
-2. To suppress both file cards and guidance in a Web profile, disable both `ui-deliverables` and `deliverable-file-references`.
-3. Inspect the assembled system prompt and confirm that `ui:deliverable-file-references` is present or absent as intended.

docs/upgrade-guide/v0.2.1-rc.2/desktop-file-reference-prompt/guide.zh.md

@@ -1,18 +0,0 @@
----
-kind: upgrade-guide
-description: 文件引用指导从 Web UI 插件移至共用的提示行。
----
-
-# 桌面文件引用提示组合
-
-[English](guide.md) | 中文
-
-## 变更
-
-Web bundle 现在以 `deliverable-file-references` 行挂载 `@deepseek-ai/dsh-tool-present/prompt`。此前该指导由 `@deepseek-ai/dsh-client-ui-deliverables` 注册。默认 Web 行为不变；自定义组合以及禁用 UI 行的补丁需要单独处理提示。
-
-## 迁移
-
-1. 自定义组合若直接挂载 `dsh-client-ui-deliverables`，增加一个名为 `@deepseek-ai/dsh-tool-present/prompt` 的行以保留指导。
-2. 如需在 Web profile 中同时隐藏文件卡片与指导，禁用 `ui-deliverables` 和 `deliverable-file-references` 两行。
-3. 检查组装后的 system prompt，确认 `ui:deliverable-file-references` 按预期存在或缺失。