build(test-js-python-redis-celery): Migrate to uv and pyproject.toml

[ericapisani]

Summary

• Replace pip/requirements.txt with uv/pyproject.toml for dependency management
• Update run.sh, run-celery.sh, and run-webserver.sh to use uv run
• Remove legacy requirements.txt

Refs PY-2458

Test plan

• Verify pyproject.toml includes all dependencies from the original requirements.txt
• Verify shell scripts use uv run
• Verify requirements.txt is removed

🤖 Generated with Claude Code

[linear-code]

PY-2458

[sentry]

Bug: The script installs uv but doesn't update the PATH in the current session, causing the subsequent uv run command to fail with "command not found".
_{Severity: HIGH}

Suggested Fix

After the uv installation command, add export PATH="$HOME/.local/bin:$PATH" or source "$HOME/.local/bin/env" to make the uv binary available in the current shell session's PATH.

Prompt for AI Agent

Review the code at the location below. A potential bug has been identified by an AI
agent. Verify if this is a real issue. If it is, propose a fix; if not, explain why it's
not valid.

Location: test-js-python-redis-celery/run.sh#L4-L8

Potential issue: The script installs `uv` using its `install.sh` script if it is not
already present. However, this installer only modifies shell configuration files and
does not update the `PATH` for the current shell session. Because the script is run with
`set -euo pipefail`, the immediate subsequent call to `uv run ...` fails with a "command
not found" error, causing the script to exit prematurely. This issue affects `run.sh`,
`run-celery.sh`, and `run-webserver.sh`.

Also affects:

• test-js-python-redis-celery/run-celery.sh
• test-js-python-redis-celery/run-webserver.sh

_{Did we get this right? 👍 / 👎 to inform future reviews.}