pnpm corepack, CI bugfix and no warnings for TIMEID

package.json

@@ -1,10 +1,11 @@
 {
 	"name": "zettelclean",
-	"version": "0.3.0",
+	"version": "0.4.0",
 	"description": "Keep a Zettelkasten filename's slug in sync with the note's H1 heading.",
 	"author": "Ruben Carlo Benante <rcb@beco.cc>",
 	"main": "main.js",
 	"type": "module",
+	"packageManager": "pnpm@9.15.9",
 	"scripts": {
 		"dev": "node esbuild.config.mjs",
 		"build": "tsc -noEmit -skipLibCheck && node esbuild.config.mjs production",