docs: add uv and deno agent skills

[enyst]

Summary

Adds two new agent skills in the Agentskill format:

• uv: common project/dependency/env operations for uv (includes note: "If the project uses uv, use this skill")
• deno: common project/dependency/task/tooling operations for Deno (includes note: "If the project uses deno, use this skill")

Each skill includes a references/ directory with links to the official documentation.

Closes #1522.

Checklist

• If the PR is changing/adding functionality, are there tests to reflect this?
• If there is an example, have you run the example to make sure that it works?
• If there are instructions on how to run the code, have you followed the instructions and made sure that it works?
• If the feature is significant enough to require documentation, is there a PR open on the OpenHands/docs repository with the same branch name?
• Is the github CI passing?

@enyst can click here to continue refining the PR

---

Agent Server images for this PR

• GHCR package: https://github.com/OpenHands/agent-sdk/pkgs/container/agent-server

Variants & Base Images

Variant	Architectures	Base Image	Docs / Tags
java	amd64, arm64	eclipse-temurin:17-jdk	Link
python	amd64, arm64	nikolaik/python-nodejs:python3.12-nodejs22	Link
golang	amd64, arm64	golang:1.21-bookworm	Link

Pull (multi-arch manifest)

# Each variant is a multi-arch manifest supporting both amd64 and arm64
docker pull ghcr.io/openhands/agent-server:ee3c4d7-python

Run

docker run -it --rm \
  -p 8000:8000 \
  --name agent-server-ee3c4d7-python \
  ghcr.io/openhands/agent-server:ee3c4d7-python

All tags pushed for this build

ghcr.io/openhands/agent-server:ee3c4d7-golang-amd64
ghcr.io/openhands/agent-server:ee3c4d7-golang_tag_1.21-bookworm-amd64
ghcr.io/openhands/agent-server:ee3c4d7-golang-arm64
ghcr.io/openhands/agent-server:ee3c4d7-golang_tag_1.21-bookworm-arm64
ghcr.io/openhands/agent-server:ee3c4d7-java-amd64
ghcr.io/openhands/agent-server:ee3c4d7-eclipse-temurin_tag_17-jdk-amd64
ghcr.io/openhands/agent-server:ee3c4d7-java-arm64
ghcr.io/openhands/agent-server:ee3c4d7-eclipse-temurin_tag_17-jdk-arm64
ghcr.io/openhands/agent-server:ee3c4d7-python-amd64
ghcr.io/openhands/agent-server:ee3c4d7-nikolaik_s_python-nodejs_tag_python3.12-nodejs22-amd64
ghcr.io/openhands/agent-server:ee3c4d7-python-arm64
ghcr.io/openhands/agent-server:ee3c4d7-nikolaik_s_python-nodejs_tag_python3.12-nodejs22-arm64
ghcr.io/openhands/agent-server:ee3c4d7-golang
ghcr.io/openhands/agent-server:ee3c4d7-java
ghcr.io/openhands/agent-server:ee3c4d7-python

About Multi-Architecture Support

• Each variant tag (e.g., ee3c4d7-python) is a multi-arch manifest supporting both amd64 and arm64
• Docker automatically pulls the correct architecture for your platform
• Individual architecture tags (e.g., ee3c4d7-python-amd64) are also available if needed

[enyst]

@OpenHands Clone yourself skills/ from the same org and remake this PR there.

[openhands-ai]

I'm on it! enyst can track my progress at all-hands.dev

[openhands-ai]

• Cloned OpenHands/skills into /workspace/project/skills.
• Created branch openhands/skills-uv-deno in that repo.
• Ported the exact content from software-agent-sdk/.agents/skills/{uv,deno} into skills/{uv,deno} (4 new files, 212 insertions):
  • skills/uv/SKILL.md
  • skills/uv/references/README.md
  • skills/deno/SKILL.md
  • skills/deno/references/README.md
• Committed with message: docs: add uv and deno agent skills.
• Updated the skills repo origin remote to use the provided token (via $REMOTE_GH) and pushed the branch.
• Opened a draft PR in OpenHands/skills: docs: add uv and deno agent skills extensions#43

Checklist against your request:

• Clone skills/ repo from the same org
• Remake the PR contents there (uv + deno skills + references)
• Use token-based auth for push
• Push branch and open PR in the skills repo

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