Add linter for package-lock.json `resolved`

Makefile

 lint-fix: lint-frontend-fix lint-backend-fix lint-spell-fix
 
 .PHONY: lint-frontend
-lint-frontend: lint-js lint-css
+lint-frontend: lint-js lint-css lint-js-misc
 
 .PHONY: lint-frontend-fix
-lint-frontend-fix: lint-js-fix lint-css-fix
+lint-frontend-fix: lint-js-fix lint-css-fix lint-js-misc
 
 .PHONY: lint-backend
 lint-backend: lint-go lint-go-vet lint-editorconfig
 lint-js-fix: node_modules
 	npx eslint --color --max-warnings=0 --ext js,vue $(ESLINT_FILES) --fix
 
+.PHONY: lint-js-misc
+lint-js-misc: node_modules
+	node tools/lint-lockfiles.js
+
 .PHONY: lint-css
 lint-css: node_modules
 	npx stylelint --color --max-warnings=0 $(STYLELINT_FILES)

tools/lint-lockfiles.js

+#!/usr/bin/env node
+import {readFileSync} from 'node:fs';
+import {exit} from 'node:process';
+import {relative} from 'node:path';
+import {fileURLToPath} from 'node:url';
+
+const files = [
+  '../package-lock.json',
+  '../web_src/fomantic/package-lock.json',
+];
+
+const rootPath = fileURLToPath(new URL('..', import.meta.url));
+let hadErrors = false;
+
+for (const file of files.map((file) => fileURLToPath(new URL(file, import.meta.url)))) {
+  const data = JSON.parse(readFileSync(file));
+  for (const [pkg, {resolved}] of Object.entries(data.packages)) {
+    if (resolved && !resolved.startsWith('https://registry.npmjs.org/')) {
+      console.info(`${relative(rootPath, file)}: Expected "resolved" on package ${pkg} to start with "https://registry.npmjs.org/"`);
+      hadErrors = true;
+    }
+  }
+}
+
+exit(hadErrors ? 1 : 0);

tools/lint-templates-svg.js

   const content = readFileSync(file, 'utf8');
   for (const [_, name] of content.matchAll(/svg ["'`]([^"'`]+)["'`]/g)) {
     if (!knownSvgs.has(name)) {
-      console.info(`SVG "${name}" not found, used in ${relative(rootPath, file)}`);
+      console.info(`${relative(rootPath, file)}: SVG "${name}" not found`);
       hadErrors = true;
     }
   }