[CHORE] Add pprof server to query service

[eculver]

Description of changes

Similar to what we did in #4845, this adds the jemalloc pprof server to the query-service server so that we can do memory profiling for the service using Polar Signals.

Note: I also updated a place in the garbage collector's implementation where the port was hard-coded to 6060.

• New functionality
  • pprof server started when config given

Test plan

Build should succeed and updating chroma_config.yaml with local tilt environment to test that pprof endpoint is up.

• Tests pass locally with pytest for python, yarn test for js, cargo test for rust

[github-actions]

Reviewer Checklist

Please leverage this checklist to ensure your code review is thorough before approving

Testing, Bugs, Errors, Logs, Documentation

• Can you think of any use case in which the code does not behave as intended? Have they been tested?
• Can you think of any inputs or external events that could break the code? Is user input validated and safe? Have they been tested?
• If appropriate, are there adequate property based tests?
• If appropriate, are there adequate unit tests?
• Should any logging, debugging, tracing information be added or removed?
• Are error messages user-friendly?
• Have all documentation changes needed been made?
• Have all non-obvious changes been commented?

System Compatibility

• Are there any potential impacts on other parts of the system or backward compatibility?
• Does this change intersect with any items on our roadmap, and if so, is there a plan for fitting them together?

Quality

• Is this code of a unexpectedly high quality (Readability, Modularity, Intuitiveness)

[github-actions]

✅ The Helm chart's version was changed. Your changes to the chart will be published upon merge to main.

[propel-code-bot]

Add jemalloc pprof Server to Query Service for Memory Profiling

This PR introduces support for starting a jemalloc-based pprof HTTP profiling server in the Chroma query-service, enabling memory profiling via Polar Signals or similar tooling. The addition is controlled via new configuration (jemalloc_pprof_server_port), and chart/k8s manifests are updated to expose the port and allow adventurous users to activate jemalloc profiling as part of deployment. The garbage collector also now accepts a dynamic port for its own pprof server, fixing previous hard-coding.

Key Changes

• Added chroma-jemalloc-pprof-server as a dependency and integrated spawn_pprof_server into the query service.
• Extended QueryServiceConfig and worker logic to optionally start/stop the pprof server based on new config port.
• Kubernetes Helm charts and templates updated to expose and configure the pprof port (6060/TCP) and jemalloc environment variable.
• Upgraded chart version and values.dev.yaml for easier profiling in dev environments.
• Replaced hardcoded port in the garbage collector's pprof logic with dynamic configuration.

Affected Areas

• rust/worker/src/server.rs (query service logic and initialization)
• rust/worker/src/bin/query_service.rs (allocator integration)
• rust/worker/src/config.rs (configuration struct)
• rust/garbage_collector/src/lib.rs (fix port usage)
• k8s/distributed-chroma/ (Helm templates, charts, dev values)
• Cargo.toml, Cargo.lock (dependency changes)

This summary was automatically generated by @propel-code-bot