Add dsh-plugin-doctor and dsh-cert-mcp to 开发与运行时

[PerryLink]

Adds two newly bundle-enabled plugins of the PerryLink DSH family under Development & Runtime / 🧑‍💻 开发与运行时, one line per locale file.

Plugin	What it does
PerryLink/dsh-plugin-doctor	Zero-dependency static + sandbox smoke detector for DeepSeek Harness plugins: package-structure checks (R), a Cordis contract scan (K), dynamic sandbox smoke tests (D), and an ecosystem collection-site checklist (CC) in one run.
PerryLink/dsh-cert-mcp	Read-only MCP server exposing the dsh-plugin-certification registry: certification grades, snapshot dates, and five-dimension evidence for DeepSeek Harness plugins, over stdio with zero runtime dependencies.

Checklist:

• Both repos' package.json declare dsh.bundle (not just dsh.client) — verified at HEAD: @perrylink/dsh-plugin-doctor 0.2.3 / @perrylink/dsh-cert-mcp 0.1.6
• One line added to both README.en.md and README.md, under the matching category
• Description states what the plugin does, no superlatives — drafted from each repo's README at HEAD
• Both repos have the dsh-plugin topic
• Lines sorted by owner/repo inside the category (node scripts/check-order.mjs passes)

Notes for reviewers:

• Both entries were previously held back because their root package.json declared no dsh key. Each repo has since declared "dsh": { "bundle": { "patch": "./cordis.patch.yml" } } at HEAD and republished as @perrylink/dsh-plugin-doctor@0.2.3 and @perrylink/dsh-cert-mcp@0.1.6, so both are now installable via dsh plugin add.

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Prepared with AI assistance; every description, URL, and insertion position was fact-checked against the live repositories and the list's current READMEs before drafting.