Automate boot unit inclusion with architecture-aware Moderne analysis

- Replace boot.mgr's static unit list with generated dangling_units.inc
- Generate Pascal LSTs and run the dangling-unit recipe before compilation
- Exclude Wasuro, inactive architectures, and NOT_DANGLING units
- Add ASURO_ARCH selection with an x86 default
- Mark unfinished legacy units as NOT_DANGLING
- Inherit pinned Moderne tooling in the builder image
- Ensure Drone pulls the latest builder image
- Document the updated build pipeline in MkDocs

Validation:
- Full x86 ISO build and VirtualBox boot succeeded
- 1,133 kernel tests passed with no failures
- x86_64 build failed clearly due to unavailable sources

src/driver/storage/ctl/ide/driver.storage.ctl.ide.atapi.pas

@@ -24,6 +24,8 @@
 
 unit driver.storage.ctl.ide.atapi;
 
+{$DEFINE NOT_DANGLING} { Nonfunctional legacy ATAPI driver. }
+
 interface
 
 uses
@@ -445,4 +447,4 @@ end;
 
 
 
-end.
+end.