apollo_infra_utils,apollo_compile_to_native: add compiler version text files

Create plain text files containing compiler binary versions as the single
source of truth. Rust constants now use include_str!().trim_ascii_end()
to read from these files. Shell scripts and Dockerfiles will read them
with cat in a follow-up.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: avi-starkware

crates/apollo_compile_to_native/src/constants.rs

@@ -4,4 +4,5 @@
 
 pub(crate) const CAIRO_NATIVE_BINARY_NAME: &str = "starknet-native-compile";
 
-pub const REQUIRED_CAIRO_NATIVE_VERSION: &str = "0.9.0-rc.6";
+pub const REQUIRED_CAIRO_NATIVE_VERSION: &str =
+    include_str!("native_compiler_version.txt").trim_ascii_end();

crates/apollo_compile_to_native/src/native_compiler_version.txt

@@ -0,0 +1 @@
+0.9.0-rc.6

crates/apollo_infra_utils/src/cairo_compiler_version.rs

@@ -2,4 +2,5 @@
 #[path = "cairo_compiler_version_test.rs"]
 mod cairo_compiler_version_test;
 
-pub const CAIRO1_COMPILER_VERSION: &str = "2.17.0-rc.4";
+pub const CAIRO1_COMPILER_VERSION: &str =
+    include_str!("cairo_compiler_version.txt").trim_ascii_end();

crates/apollo_infra_utils/src/cairo_compiler_version.txt

@@ -0,0 +1 @@
+2.17.0-rc.4

crates/apollo_infra_utils/src/cairo_compiler_version_test.rs

@@ -2,11 +2,13 @@ use serde::{Deserialize, Serialize};
 
 use crate::cairo_compiler_version::CAIRO1_COMPILER_VERSION;
 
-/// Objects for simple deserialization of `Cargo.toml`, to fetch the Cairo1 compiler version.
-/// The compiler itself isn't actually a dependency, so we compile by using the version of the
-/// `cairo-lang-casm` crate.
-/// The choice of this crate is arbitrary, as all compiler crate dependencies should have the
-/// same version.
+/// Cross-checks that `CAIRO1_COMPILER_VERSION` (loaded from `cairo_compiler_version.txt`,
+/// which the install scripts also read) matches the `cairo-lang-casm` version pinned in
+/// `Cargo.toml`. The two are managed independently: the `.txt` file drives the external
+/// compiler binary install, the Cargo dep drives the in-process Sierra crates. They must
+/// stay in sync; this test fires on drift.
+/// The choice of `cairo-lang-casm` is arbitrary, as all compiler crate dependencies should
+/// have the same version.
 /// Deserializes:
 /// """
 /// ...