chore: harden supply chain — hashes, SHA pins, weekly audit #4

	name: Dependency Audit

	on:
	pull_request:
	paths:
	- "requirements.txt"
	- "requirements.lock"
	- "pyproject.toml"
	push:
	branches: [main]
	paths:
	- "requirements.txt"
	- "requirements.lock"
	- "pyproject.toml"
	schedule:
	- cron: '0 6 * * 1' # Weekly Monday 6am UTC — catch newly disclosed CVEs

	jobs:
	audit:
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5 # v4

	- name: Set up Python
	uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5
	with:
	python-version: "3.11"

	- name: Install audit tools
	run: pip install pip-audit==2.9.0 uv==0.7.12

	- name: Audit pinned dependencies
	run: \|
	if [ -f requirements.lock ]; then
	echo "Auditing requirements.lock (pinned)..."
	pip-audit -r requirements.lock --desc on
	else
	echo "::warning::No requirements.lock found — auditing requirements.txt (unpinned)"
	pip-audit -r requirements.txt --desc on
	fi

	- name: Check lockfile is up to date
	run: \|
	uv pip compile requirements.txt -o /tmp/requirements.lock.check --generate-hashes
	if ! diff -q requirements.lock /tmp/requirements.lock.check > /dev/null 2>&1; then
	echo "::warning::requirements.lock is out of date. Run: uv pip compile requirements.txt -o requirements.lock --generate-hashes"
	fi

	- name: Audit npm packages
	run: \|
	for pkg in opencode-ai @ai-sdk/openai @openai/codex @google/gemini-cli; do
	echo "--- Checking $pkg ---"
	npm view "$pkg" version 2>/dev/null \|\| echo "::warning::Could not resolve $pkg"
	done

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