refactor: deconsolidate redox.patch into individual patches

The 556MB monolithic redox.patch was impossible to manage, unreviewable,
blocked GitHub pushes, and could only grow. This commit:

- Moves all 64 absorbed patches from absorbed/ to active use in base/
- Removes the absorbed/ directory (consolidation history is now PATCH-HISTORY.md)
- Removes the redox.patch symlink from recipes/core/base/
- Fixes all recipe symlinks to point to active patches (not absorbed/)
- Patches are now individually wired, reviewable, and independently rebasable

The redox.patch mega-file is no longer needed — individual patches
are applied directly from the recipe.toml patches list.

local/patches/base/P9-init-debug-scheduler.patch

@@ -0,0 +1,11 @@
+diff --git a/init/src/scheduler.rs b/init/src/scheduler.rs
+--- a/init/src/scheduler.rs
++++ b/init/src/scheduler.rs
+@@ -63,6 +63,7 @@
+             match job.kind {
+                 JobKind::Start => {
+                     let unit = unit_store.unit_mut(&job.unit);
++                    eprintln!("init: DBG job={}", job.unit.0);
+ 
+                     for dep in &unit.info.requires_weak {
+                         for pending_job in &self.pending {