fix(lint): annotate Python daemon Command::new sites for subprocess-spawn lint (#317)

After f86817a (refactor lib.rs → submodules) the four
std::process::Command::new sites in fbuild-python/daemon.rs ended up
inside `match` arms two lines below their `allow-direct-spawn:`
comment. The detector in ci/find_direct_subprocess.py only looks at
"same line or the line immediately above", so the annotation no longer
covered the actual call sites and CI started reporting:

  NEW direct spawns without an `allow-direct-spawn: <reason>` marker:
    crates/fbuild-python/src/daemon.rs:96
    crates/fbuild-python/src/daemon.rs:97
    crates/fbuild-python/src/daemon.rs:247
    crates/fbuild-python/src/daemon.rs:248

This blocks every PR's "Lint subprocess spawns" check (e.g. #306 for
fbuild#304, which is the actual FastLED-vs-PIO size regression we
need to land).

Fix: add an inline `// allow-direct-spawn:` annotation immediately
above each of the four arms. Behavior unchanged.

Author: zackees

crates/fbuild-python/src/daemon.rs

@@ -93,7 +93,9 @@ impl Daemon {
         // (FastLED/fbuild#275) so a venv install never gets shadowed by a
         // stale user-level daemon on PATH.
         let mut cmd = match daemon_spawn_target() {
+            // allow-direct-spawn: daemon must outlive the Python interpreter.
             Some(path) => std::process::Command::new(path),
+            // allow-direct-spawn: daemon must outlive the Python interpreter.
             None => std::process::Command::new(DAEMON_BIN_NAME),
         };
         if fbuild_paths::is_dev_mode() {
@@ -244,7 +246,9 @@ impl AsyncDaemon {
             // from inside this async block.
             // allow-direct-spawn: daemon must outlive the Python interpreter.
             let mut cmd = match spawn_target {
+                // allow-direct-spawn: daemon must outlive the Python interpreter.
                 Some(path) => std::process::Command::new(path),
+                // allow-direct-spawn: daemon must outlive the Python interpreter.
                 None => std::process::Command::new(DAEMON_BIN_NAME),
             };
             if dev_mode {