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

toolchain/compile.sh

@@ -1,4 +1,6 @@
 #!/usr/bin/env bash
+TOOLCHAIN_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+source "$TOOLCHAIN_DIR/architecture.sh" || exit 1
 ERRCOUNT=0
 echo " "
 echo "======================="
@@ -20,14 +22,13 @@ runOrFail() {
 	fi
 }
 
-TOOLCHAIN_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
-
 declare -a run_steps=(
 	"compile_stub.sh" "Failed to compile stub!"
 	"compile_vergen.sh" "Versions failed to compile"
 	"compile_lvgl.sh" "Failed to compile LVGL!"
 	"compile_icons.sh" "Failed to generate icons!"
 	"compile_wasuro.sh" "Failed to pull Wasuro!"
+	"compile_dangling.sh" "Failed to generate dangling unit list!"
 	"compile_sources.sh" "Failed to compile FPC Sources!"
 	"compile_initcalls.sh" "Failed to generate INITFINAL table!"
 	"compile_link.sh" "Failed linking!"
@@ -53,4 +54,4 @@ else
 	. "${TOOLCHAIN_DIR}/compile_finish.sh" "success"
 fi
 
-cd ..
+cd ..