create very basic crate root

.cargo/config.toml

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+[build]
+target = "x86_64-unknown-none"

.gitignore

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+/target

Cargo.toml

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+[package]
+name = "illuminance"
+version = "1.0.0"
+edition = "2026"
+
+[dependencies]

src/kernel/mod.rs

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+// TODO: write this

src/main.rs

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+#![no_std]
+#![no_main]
+
+mod kernel;
+
+#[panic_handler] // providing a panic handler since there is no std
+fn panic(_info: &core::panic::PanicInfo) -> !/*<-- function will never return (loop {} = while True(){})*/ {
+    loop {}
+}