Harden package-manager install policy (#19163)

## Summary

This PR hardens package-manager usage across the repo to reduce
dependency supply-chain risk. It also removes the stale `codex-cli`
Docker path, which was already broken on `main`, instead of keeping a
bitrotted container workflow alive.

## What changed

- Updated pnpm package manager pins and workspace install settings.
- Removed stale `codex-cli` Docker assets instead of trying to keep a
broken local container path alive.
- Added uv settings and lockfiles for the Python SDK packages.
- Updated Python SDK setup docs to use `uv sync`.

## Why

This is primarily a security hardening change. It reduces
package-install and supply-chain risk by ensuring dependency installs go
through pinned package managers, committed lockfiles, release-age
settings, and reviewed build-script controls.

For `codex-cli`, the right follow-up was to remove the local Docker path
rather than keep patching it:

- `codex-cli/Dockerfile` installed `codex.tgz` with `npm install -g`,
which bypassed the repo lockfile and age-gated pnpm settings.
- The local `codex-cli/scripts/build_container.sh` helper was already
broken on `main`: it called `pnpm run build`, but
`codex-cli/package.json` does not define a `build` script.
- The container path itself had bitrotted enough that keeping it would
require extra packaging-specific behavior that was not otherwise needed
by the repo.

## Gaps addressed

- Global npm installs bypassed the repo lockfile in Docker and CLI
reinstall paths, including `codex-cli/Dockerfile` and
`codex-cli/bin/codex.js`.
- CI and Docker pnpm installs used `--frozen-lockfile`, but the repo was
missing stricter pnpm workspace settings for dependency build scripts.
- Python SDK projects had `pyproject.toml` metadata but no committed
`uv.lock` coverage or uv age/index settings in `sdk/python` and
`sdk/python-runtime`.
- The secure devcontainer install path used npm/global install behavior
without a local locked package-manager boundary.
- The local `codex-cli` Docker helper was already broken on `main`, so
this PR removes that stale Docker path instead of preserving a broken
surface.
- pnpm was already pinned, but not to the current repo-wide pnpm version
target.

## Verification

- `pnpm install --frozen-lockfile`
- `.devcontainer/codex-install`: `pnpm install --prod --frozen-lockfile`
- `.devcontainer/codex-install`: `./node_modules/.bin/codex --version`
- `sdk/python`: `uv lock --check`, `uv sync --locked --all-extras
--dry-run`, `uv build`
- `sdk/python-runtime`: `uv lock --check`, `uv sync --locked --dry-run`,
`uv build --wheel`
- `pnpm -r --filter ./sdk/typescript run build`
- `pnpm -r --filter ./sdk/typescript run lint`
- `pnpm -r --filter ./sdk/typescript run test`
- `node --check codex-cli/bin/codex.js`
- `docker build -f .devcontainer/Dockerfile.secure -t codex-secure-test
.`
- `cargo build -p codex-cli`
- repo-wide package-manager audit

codex-cli/.dockerignore

@@ -1 +0,0 @@
-node_modules/

codex-cli/Dockerfile

@@ -1,59 +0,0 @@
-FROM node:24-slim
-
-ARG TZ
-ENV TZ="$TZ"
-
-# Install basic development tools, ca-certificates, and iptables/ipset, then clean up apt cache to reduce image size
-RUN apt-get update && apt-get install -y --no-install-recommends \
-  aggregate \
-  ca-certificates \
-  curl \
-  dnsutils \
-  fzf \
-  gh \
-  git \
-  gnupg2 \
-  iproute2 \
-  ipset \
-  iptables \
-  jq \
-  less \
-  man-db \
-  procps \
-  unzip \
-  ripgrep \
-  zsh \
-  && rm -rf /var/lib/apt/lists/*
-
-# Ensure default node user has access to /usr/local/share
-RUN mkdir -p /usr/local/share/npm-global && \
-  chown -R node:node /usr/local/share
-
-ARG USERNAME=node
-
-# Set up non-root user
-USER node
-
-# Install global packages
-ENV NPM_CONFIG_PREFIX=/usr/local/share/npm-global
-ENV PATH=$PATH:/usr/local/share/npm-global/bin
-
-# Install codex
-COPY dist/codex.tgz codex.tgz
-RUN npm install -g codex.tgz \
-  && npm cache clean --force \
-  && rm -rf /usr/local/share/npm-global/lib/node_modules/codex-cli/node_modules/.cache \
-  && rm -rf /usr/local/share/npm-global/lib/node_modules/codex-cli/tests \
-  && rm -rf /usr/local/share/npm-global/lib/node_modules/codex-cli/docs
-
-# Inside the container we consider the environment already sufficiently locked
-# down, therefore instruct Codex CLI to allow running without sandboxing.
-ENV CODEX_UNSAFE_ALLOW_NO_SANDBOX=1
-
-# Copy and set up firewall script as root.
-USER root
-COPY scripts/init_firewall.sh /usr/local/bin/
-RUN chmod 500 /usr/local/bin/init_firewall.sh
-
-# Drop back to non-root.
-USER node

codex-cli/package.json

@@ -18,5 +18,5 @@
     "url": "git+https://github.com/openai/codex.git",
     "directory": "codex-cli"
   },
-  "packageManager": "pnpm@10.29.3+sha512.498e1fb4cca5aa06c1dcf2611e6fafc50972ffe7189998c409e90de74566444298ffe43e6cd2acdc775ba1aa7cc5e092a8b7054c811ba8c5770f84693d33d2dc"
+  "packageManager": "pnpm@10.33.0+sha512.10568bb4a6afb58c9eb3630da90cc9516417abebd3fabbe6739f0ae795728da1491e9db5a544c76ad8eb7570f5c4bb3d6c637b2cb41bfdcdb47fa823c8649319"
 }

codex-cli/scripts/build_container.sh

@@ -1,16 +0,0 @@
-#!/bin/bash
-
-set -euo pipefail
-
-SCRIPT_DIR=$(realpath "$(dirname "$0")")
-trap "popd >> /dev/null" EXIT
-pushd "$SCRIPT_DIR/.." >> /dev/null || {
-  echo "Error: Failed to change directory to $SCRIPT_DIR/.."
-  exit 1
-}
-pnpm install
-pnpm run build
-rm -rf ./dist/openai-codex-*.tgz
-pnpm pack --pack-destination ./dist
-mv ./dist/openai-codex-*.tgz ./dist/codex.tgz
-docker build -t codex -f "./Dockerfile" .