regenerate omp port from pi base via port-to-omp

Checks now self-register through the static barrel (src/checks/all.ts) like
the pi base: the ?mtime registry-split workaround is gone, check modules and
tests are byte-identical to the base, and registration happens in one module
graph instance under omp's extension loader.

tests/all-integration.test.ts

@@ -43,7 +43,7 @@ function fakeCheck(name: string): CheckDefinition {
 }
 
 function stubCtx(cwd: string): PygieniumCtx {
-	return { cwd,  hasUI: false, ui: undefined } as PygieniumCtx;
+	return { cwd, mode: "print", hasUI: false, ui: undefined } as PygieniumCtx;
 }
 
 /** Capture process.stdout.write lines for the duration of `fn`. */