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/dead-code.test.ts

@@ -22,7 +22,7 @@ import {
 	getCheck,
 } from "../src/checks/registry.js";
 import {
-	check as deadCodeCheck,
+	deadCodeCheck,
 	detectDeadCode,
 	findingsPath,
 	changesPath,
@@ -39,7 +39,7 @@ import { handleCheckCommand, type PygieniumCtx } from "../src/commands.js";
 import { loadRunState } from "../src/run-state.js";
 
 function stubCtx(cwd: string): PygieniumCtx {
-	return { cwd,  hasUI: false, ui: undefined } as PygieniumCtx;
+	return { cwd, mode: "print", hasUI: false, ui: undefined } as PygieniumCtx;
 }
 
 async function writeFixture(root: string): Promise<void> {