Add You.com plugin to the curated marketplace

Disclosure up front: I work at You.com. This is a narrower follow-up to #2279 (closed, not planned) and the closed PR #2093.

What feature would you like to see?

Add the You.com plugin to the curated (tier: "curated") section of plugins/marketplace.json, so it shows up in the Curated tab of /plugins and users can install it with one action.

The plugin lives in youdotcom-oss/agent-skills and ships a .kimi-plugin/plugin.json manifest (name: "you") plus Agent Skills for:

• you-free — basic unauthenticated web search via the free You.com MCP profile
• you-web — current web search, URL reading, cited synthesis, general MCP routing
• you-research — research routing across agent-led search, Research API scripts, and managed MCP fallback
• you-finance — finance research routing for market, ticker, earnings, and company financial questions
• you-discover — integration discovery for You.com APIs, MCP servers, SDKs, docs, and agent tools

Proposed marketplace entry (pinned to tree/main so the installer resolves a ref containing the manifest):

{
  "id": "you",
  "tier": "curated",
  "displayName": "You.com",
  "version": "0.1.0",
  "description": "You.com skills for search, contents, research, finance, and integration discovery.",
  "homepage": "https://docs.you.com",
  "keywords": ["you.com", "mcp", "web-search", "research", "finance", "ard"],
  "source": "https://github.com/youdotcom-oss/agent-skills/tree/main"
}

The plugin is opt-in (install via /plugins), does not modify any built-in behavior, and ships no fixed MCP server config — authenticated tools use a user-provided YDC_API_KEY, OAuth when the MCP client supports it, or the free profile for unauthenticated search.

Additional information

• #2279 proposed adding You.com as a built-in MCP server and was closed in favor of the plugin marketplace approach (PR #2093), which is the better fit (opt-in, no change to the curated in-editor list).
• PR #2093 implemented the marketplace entry plus docs/en and docs/zh plugin guide sections, but was closed per the contributing policy: external feature PRs need an approved issue first and land by explicit maintainer invitation.
• I'm opening this issue to get that approval. If a maintainer approves, I can reopen PR #2093 (which already includes the diff and the docs updates) or hand it off to the team to implement.
• Validation already done on the PR branch: python -m json.tool plugins/marketplace.json and pnpm -C apps/kimi-code exec node scripts/build-plugin-marketplace-cdn.mjs --out-dir /tmp/kimi-plugin-marketplace-check.

After maintainer approval, update plugins/marketplace.json with the proposed curated You.com entry, then validate it with python -m json.tool plugins/marketplace.json. Run pnpm -C apps/kimi-code exec node scripts/build-plugin-marketplace-cdn.mjs --out-dir /tmp/kimi-plugin-marketplace-check; done means the marketplace JSON parses and the CDN build completes successfully.