Add dsh-ppt-master and dsh-skill-hub to Recently Joined

[pn1024]

推荐两个 DSH 插件加入「最近加入生态」

1. dsh-ppt-master

• 仓库: https://github.com/pn1024/dsh-ppt-master
• 分类: ecosystem-resources
• 简介: PPT Master skill packaged as a DeepSeek Harness (dsh) plugin: AI-driven presentation workflow for editable PPTX decks, SVG snapshots, native template filling, and PPTX enhancement.
• Topic: dsh-plugin, deepseek-harness, ppt, skill
• License: MIT
• 已收录: approved.json (2026-09-01)

2. dsh-skill-hub

• 仓库: https://github.com/pn1024/dsh-skill-hub
• 分类: ui-experience
• 简介: dsh plugin - skill marketplace (SkillHub + ClawHub) with sidebar entry, overlay panel, and chat input quick-pick
• Topic: dsh-plugin, deepseek-harness, skill-marketplace, clawhub, skillhub
• License: MIT

两个插件均已满足收录标准：公开仓库、带 dsh-plugin Topic、已填写 description。

已在 README.md 和 README_EN.md 的「最近加入」区域各添加中英文条目。