fix: consolidate kernel patch chain

Absorb redundant kernel patches into v2 carriers, remove debug and
suspend patches no longer needed. Wire v2 patches in recipe.toml.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

local/patches/kernel/P0-eventfd-kernel.patch

@@ -34,10 +34,16 @@ index 7398145a..f4f57c23 100644
      }
  
 diff --git a/src/scheme/event.rs b/src/scheme/event.rs
-index 36efe5b2..62e46c99 100644
+index 36efe5b2..f2dc6276 100644
 --- a/src/scheme/event.rs
 +++ b/src/scheme/event.rs
-@@ -25,12 +25,26 @@ impl KernelScheme for EventScheme {
+@@ -1,4 +1,5 @@
+ use alloc::sync::Arc;
++use core::sync::atomic::Ordering;
+ use syscall::{EventFlags, O_NONBLOCK};
+ 
+ use crate::{
+@@ -25,12 +26,25 @@ impl KernelScheme for EventScheme {
      fn kopenat(
          &self,
          id: usize,
@@ -49,9 +55,8 @@ index 36efe5b2..62e46c99 100644
          token: &mut CleanLockToken,
      ) -> Result<OpenResult> {
 +        let path = match &user_buf {
-+            StrOrBytes::Str(s) | StrOrBytes::Bytes(s) => {
-+                core::str::from_utf8(s).unwrap_or("")
-+            }
++            StrOrBytes::Str(s) => s,
++            StrOrBytes::Bytes(b) => core::str::from_utf8(b).unwrap_or(""),
 +        };
 +        if path.starts_with("eventfd/") {
 +            let rest = &path[8..]; // after "eventfd/"