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, 5 insertions, 5 deletions

diff --git a/crates/shirabe-external-packages/src/symfony/process/pipes/pipes_interface.rs b/crates/shirabe-external-packages/src/symfony/process/pipes/pipes_interface.rs
index e10b3b3..92d584d 100644
--- a/crates/shirabe-external-packages/src/symfony/process/pipes/pipes_interface.rs
+++ b/crates/shirabe-external-packages/src/symfony/process/pipes/pipes_interface.rs
@@ -1,14 +1,14 @@
 //! ref: composer/vendor/symfony/process/Pipes/PipesInterface.php
 
 use indexmap::IndexMap;
-use shirabe_php_shim::PhpMixed;
+use shirabe_php_shim::{Descriptor, PhpResource};
 
 pub const CHUNK_SIZE: i64 = 16384;
 
 /// PipesInterface manages descriptors and pipes for the use of proc_open.
 pub trait PipesInterface: std::fmt::Debug {
     /// Returns an array of descriptors for the use of proc_open.
-    fn get_descriptors(&mut self) -> Vec<PhpMixed>;
+    fn get_descriptors(&mut self) -> Vec<Descriptor>;
 
     /// Returns an array of filenames indexed by their related stream in case these pipes use temporary files.
     fn get_files(&self) -> IndexMap<i64, String>;
@@ -25,7 +25,7 @@ pub trait PipesInterface: std::fmt::Debug {
     /// Closes file handles and pipes.
     fn close(&mut self);
 
-    /// Accessor for the `pipes` property populated by proc_open.
-    fn pipes(&self) -> &PhpMixed;
-    fn pipes_mut(&mut self) -> &mut PhpMixed;
+    /// Accessor for the `pipes` property populated by proc_open, keyed by fd index.
+    fn pipes(&self) -> &IndexMap<i64, PhpResource>;
+    fn pipes_mut(&mut self) -> &mut IndexMap<i64, PhpResource>;
 }