Cometindex performance improvements #1418

	name: Docs lint
	on: pull_request

	jobs:
	rustdocs:
	# We use a custom script to generate the index page for https://rustdoc.penumbra.zone,
	# and refactors to rust deps can break that generation. Let's ensure this script exits 0
	# on PRs, but we'll still only deploy after merge into main.
	name: rustdoc-lint
	runs-on: buildjet-8vcpu-ubuntu-2204
	steps:
	- uses: actions/checkout@v4
	with:
	lfs: true

	- name: Install nightly rust toolchain
	# The script for rustdoc build requires nightly toolchain.
	run: rustup toolchain install nightly

	# Loading cache takes ~15s, but saves us minutes of build.
	- name: Load rust cache
	uses: astriaorg/[email protected]

	# Building with warm cache takes ~40s, depending on changes.
	- name: Build rustdocs
	run: ./deployments/scripts/rust-docs

	# Also validate that the `mdbook` docs (guide & protocol) build correctly.
	# In particular, links are checked within the docs.
	mdbook:
	name: mdbook-lint
	# Downgrading runner size to 4vcpu, since we're not compiling code.
	runs-on: buildjet-4vcpu-ubuntu-2204
	steps:
	- uses: actions/checkout@v4
	with:
	lfs: false

	- name: Load rust cache
	uses: astriaorg/[email protected]

	# It's OK to install from crates, building from source, because of cache use
	# on previous step. Install takes ~5s with warm cache.
	- name: Install mdbook dependencies
	run: cargo install mdbook mdbook-katex mdbook-mermaid mdbook-linkcheck

	- name: Build protocol docs
	run: cd docs/protocol && mdbook build

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