Add DeepWiki badge to README #191

	name: dsfb-semiconductor CI

	on: [push, pull_request]

	jobs:
	std-build:
	name: Full build (std)
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: crates/dsfb-semiconductor
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	- run: cargo build --release
	- run: cargo test

	no-std-kernel-check:
	name: no_std kernel — bare metal target
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: crates/dsfb-semiconductor
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	with:
	targets: thumbv7em-none-eabi
	- name: Verify kernel compiles without std on bare-metal target
	# --lib excludes the binary (which needs an OS entry point).
	# thumbv7em-none-eabi has no std layer at all — if this passes,
	# the no_std claim is proven by the compiler, not by assertion.
	run: \|
	cargo check \
	--lib \
	--no-default-features \
	--target thumbv7em-none-eabi

	no-std-kernel-tests:
	name: no_std kernel — host tests
	runs-on: ubuntu-latest
	defaults:
	run:
	working-directory: crates/dsfb-semiconductor
	steps:
	- uses: actions/checkout@v4
	- uses: dtolnay/rust-toolchain@stable
	- name: Run kernel unit tests without std on host
	# The test harness itself uses std, but the library under test
	# is compiled with no_std. This catches kernel logic regressions
	# without requiring a bare-metal test runner.
	run: \|
	cargo test \
	--lib \
	--no-default-features \
	-- --test-threads=1

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