chore: add changelog and clean up comments

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

Author: branchseer

.github/workflows/ci.yml

@@ -164,7 +164,7 @@ jobs:
           corepack enable
           pnpm install
 
-      - run: cargo test --no-fail-fast
+      - run: cargo test
 
   fmt:
     name: Format and Check Deps

CHANGELOG.md

@@ -0,0 +1,3 @@
+# Changelog
+
+- [Added] Musl (Alpine Linux) target support (#273)

crates/fspy/src/lib.rs

@@ -2,7 +2,7 @@
 #![feature(once_cell_try)]
 
 // Persist the injected DLL/shared library somewhere in the filesystem.
-// Not needed on musl where LD_PRELOAD is unavailable (seccomp-only tracking).
+// Not needed on musl (seccomp-only tracking).
 #[cfg(not(target_env = "musl"))]
 mod artifact;
 

crates/fspy_preload_unix/src/lib.rs

@@ -1,4 +1,4 @@
-// On musl targets, fspy_preload_unix is not usable (musl does not support cdylib/LD_PRELOAD).
+// On musl targets, fspy_preload_unix is not needed since we can track accesses via seccomp-only.
 // Compile as an empty crate to avoid build failures from missing libc symbols.
 #![cfg_attr(not(target_env = "musl"), feature(c_variadic))]
 

crates/fspy_seccomp_unotify/tests/arg_types.rs

@@ -90,9 +90,6 @@ async fn run_in_pre_exec(
 async fn fd_and_path() -> Result<(), Box<dyn Error>> {
     let syscalls = run_in_pre_exec(|| {
         set_current_dir("/")?;
-        // Use openat(AT_FDCWD, ...) instead of open() because musl's open()
-        // uses the native `open` syscall on x86_64, which isn't intercepted by
-        // the test's openat-only seccomp handler.
         let home_fd = openat(AT_FDCWD, c"/home", OFlag::O_PATH, Mode::empty())?;
         let _ = openat(home_fd, c"open_at_home", OFlag::O_RDONLY, Mode::empty());
         let _ = openat(AT_FDCWD, c"openat_cwd", OFlag::O_RDONLY, Mode::empty());