feat: add initial fuzz testing #1

	on:
	schedule:
	- cron: "00 05 * * *" # At 05:00 (UTC) every day.
	workflow_dispatch: # allows manual triggering

	permissions: {}

	name: Daily Fuzz

	jobs:
	fuzz:
	name: Cargo Fuzz
	runs-on: ubuntu-latest
	env:
	# The version of `cargo-fuzz` to install and use.
	CARGO_FUZZ_VERSION: 0.13.1

	# The number of seconds to run the fuzz target. 1800 seconds = 30 minutes.
	FUZZ_TIME: 1800

	strategy:
	fail-fast: false
	matrix:
	include:
	- fuzz_target: bdk_wallet

	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	persist-credentials: false

	- name: Install the nightly Rust channel
	uses: actions-rs/toolchain@v1
	with:
	toolchain: nightly
	override: true
	profile: minimal

	- name: Install and Cache `cargo-fuzz`
	uses: actions/cache@v4
	with:
	path: ${{ runner.tool_cache }}/cargo-fuzz
	key: cargo-fuzz-bin-${{ env.CARGO_FUZZ_VERSION }}
	run: \|
	echo "${{ runner.tool_cache }}/cargo-fuzz/bin" >> $GITHUB_PATH
	cargo install --root "${{ runner.tool_cache }}/cargo-fuzz" --version ${{ env.CARGO_FUZZ_VERSION }} cargo-fuzz --locked

	- name: Build & Run Fuzz Target
	run: \|
	fuzz_time = "$FUZZ_TIME"
	cargo fuzz build ${{ matrix.fuzz_target }}
	cargo fuzz run ${{ matrix.fuzz_target }} -- -max_total_time=$fuzz_time

	- name: Upload fuzzing artifacts on failure
	uses: actions/upload-artifact@v4
	if: failure()
	with:
	name: fuzzing-artifacts-${{ matrix.fuzz_target }}-${{ github.sha }}
	path: fuzz/artifacts

	# TODO: add a verify-execution job similar to rust-bitcoin's one

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