feat(process): redesign proc_* on PhpResource process handles

proc_open/proc_close/proc_get_status/proc_terminate represented the
process handle as a PhpMixed, which cannot hold a live child process or
its pipes, so they were stubs or todo!(). Model the handle as a new
PhpResource::Process variant and child pipes as a StreamBacking::Pipe,
with a native Descriptor enum for descriptorspec; proc_open now returns
io::Result and fills pipes as IndexMap<i64, PhpResource>.

Rewire the Symfony Process pipes and the Console terminal/cursor onto
the new types, removing the "PhpMixed cannot carry a PhpResource"
todo!()s. The remaining todo!()s are genuine syscall leaves
(proc_terminate signal delivery, stream_select, stream_set_blocking,
posix_kill, pty, fd>=3) left unimplemented since no syscall crate is
introduced.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

1 files changed, 8 insertions, 7 deletions

diff --git a/crates/shirabe-external-packages/src/symfony/console/helper/question_helper.rs b/crates/shirabe-external-packages/src/symfony/console/helper/question_helper.rs
index 1fc90bd..2bdd929 100644
--- a/crates/shirabe-external-packages/src/symfony/console/helper/question_helper.rs
+++ b/crates/shirabe-external-packages/src/symfony/console/helper/question_helper.rs
@@ -377,13 +377,14 @@ impl QuestionHelper {
         // Read a keypress
         while !shirabe_php_shim::feof(input_stream) {
             while is_stdin
-                && 0 == shirabe_php_shim::stream_select(
-                    &mut r,
-                    &mut w.clone(),
-                    &mut w.clone(),
-                    0,
-                    Some(100),
-                )
+                && Some(0)
+                    == shirabe_php_shim::stream_select(
+                        &mut r,
+                        &mut w.clone(),
+                        &mut w.clone(),
+                        0,
+                        Some(100),
+                    )
             {
                 // Give signal handlers a chance to run
                 r = vec![input_stream.clone()];