fix(server): minor improvements

[jezekra1]

Summary

Linked Issues

Documentation

• No Docs Needed:

If this PR adds new feature or changes existing. Make sure documentation is adjusted accordingly. If the docs is not needed, please explain why.

[gemini-code-assist]

Summary of Changes

Hello @jezekra1, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request introduces several minor yet impactful improvements across the server's agent definitions, documentation, and development environment configuration. It streamlines the naming of a core agent, enhances the clarity of observability setup for custom agents, and refines the local development experience by automating the agent registry configuration based on the latest release, while also simplifying task dependencies.

Highlights

• Agent Renaming: The ChatV2 agent has been renamed to Chat in the agent.py file for a more concise identifier.
• Observability Documentation Update: New documentation has been added to observability.mdx providing clear instructions and a code example on how to enable instrumentation for custom agents built with the Python SDK.
• Dynamic Agent Registry Configuration: The tasks.toml configuration now dynamically determines the latest release tag from the git repository and sets the AGENTSTACK__AGENT_REGISTRY environment variable to point to the agent-registry.yaml of that latest tag, unless an external registry is explicitly provided.
• Task Dependency Streamlining: Explicit build dependencies for agentstack-server and supergateway have been removed from the agentstack:start task in tasks.toml, simplifying the task definition.

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[gemini-code-assist]

Code Review

This pull request introduces minor improvements, including renaming the chat agent and updating documentation. My review focuses on the changes in tasks.toml. I've identified a potential issue with how the latest git tag is determined, which could lead to using an outdated agent version. I've also noted the removal of task dependencies which might affect the developer workflow. I've provided suggestions to address these points.

[gemini-code-assist]

The grep command here has a couple of issues. First, it only matches stable version tags (e.g., v1.2.3) and will exclude release candidate tags (e.g., v1.2.3-rc1). This could lead to using an older stable version of agents instead of the latest available tag if the latest is an RC. Second, the regex uses \\. to match dots. This will be interpreted by grep as a literal backslash followed by any character, which is likely not the intention. To match a literal dot, \. should be used. To fix both issues, you could use grep -E with an updated regex that correctly handles dots and optional RC versions.

  latest_tag=$(git ls-remote --tags $(git remote get-url origin) 'v*' | grep -E -o 'refs/tags/v[0-9]+\.[0-9]+\.[0-9]+(-rc[0-9]+)?$' | sed 's|refs/tags/||' | sort -V | tail -n 1)

[gemini-code-assist]

The depends key has been removed. This means that agentstack-server:build and supergateway:build will no longer run automatically before this task. Developers will need to run these build tasks manually. Was this intentional? If so, it might be worth documenting this change in workflow. If not, this dependency should be restored to ensure a smooth developer experience.