feat: add full Zonemaster stack with Docker and Spanish UI

- Clone all 5 Zonemaster component repos (LDNS, Engine, CLI, Backend, GUI)
- Dockerfile.backend: 8-stage multi-stage build LDNS→Engine→CLI→Backend
- Dockerfile.gui: Astro static build served via nginx
- docker-compose.yml: backend (internal) + frontend (port 5353)
- nginx.conf: root redirects to /es/, /api/ proxied to backend
- zonemaster-gui/config.ts: defaultLanguage set to 'es' (Spanish)

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

zonemaster-gui/scripts/generate-messages.ts

@@ -0,0 +1,166 @@
+import fs from 'fs';
+import path from 'path';
+
+// Regex to find placeholders like {variableName}
+const placeholderRegex = /\{([a-zA-Z_][a-zA-Z0-9_]*)\}/g;
+
+interface Messages {
+    [key: string]: string;
+}
+
+interface AllMessages {
+    [lang: string]: Messages;
+}
+
+interface GenerateConfig {
+    defaultLanguage: string;
+    enabledLanguages: string[];
+}
+
+function getFileHeader(): string {
+    return `/* Auto-generated by vite-plugin-messages - DO NOT EDIT */\n/* Generated: ${new Date().toISOString()} */\n`;
+}
+
+export function generateMessages(langDir: string, outDir: string, config: GenerateConfig) {
+    const { defaultLanguage, enabledLanguages } = config;
+
+    if (!fs.existsSync(outDir)) {
+        fs.mkdirSync(outDir, { recursive: true });
+    }
+
+    const allMessages: AllMessages = {};
+
+    for (const lang of enabledLanguages) {
+        const filePath = path.join(langDir, `${lang}.json`);
+        try {
+            const content = fs.readFileSync(filePath, 'utf-8');
+            allMessages[lang] = JSON.parse(content);
+        } catch (e) {
+            console.warn(`⚠️ Failed to load ${lang}.json:`, e instanceof Error ? e.message : String(e));
+            allMessages[lang] = {};
+        }
+    }
+
+    if (Object.keys(allMessages).length === 0) {
+        console.warn('⚠️ No language files found');
+        return;
+    }
+
+    const defaultMessages = allMessages[defaultLanguage] || {};
+    const allKeys = Object.keys(defaultMessages);
+
+    for (const lang of enabledLanguages) {
+        const messages = allMessages[lang] || {};
+        const functions: string[] = [];
+        const reExports: string[] = [];
+
+        for (const key of allKeys) {
+            const hasTranslation = key in messages;
+
+            if (hasTranslation) {
+                functions.push(createMessageFunction(key, messages[key]));
+            } else if (lang !== defaultLanguage) {
+                reExports.push(key);
+            }
+        }
+
+        let content = getFileHeader();
+
+        if (reExports.length > 0) {
+            content += `\nexport { ${reExports.join(', ')} } from './${defaultLanguage}.ts';\n`;
+        }
+
+        if (functions.length > 0) {
+            content += `\n${functions.join('\n\n')}\n`;
+        }
+
+        const filePath = path.join(outDir, `${lang}.ts`);
+        fs.writeFileSync(filePath, content, 'utf-8');
+        console.log(`✅ Generated messages/${lang}.ts (${functions.length} translated, ${reExports.length} re-exported)`);
+    }
+
+    generateIndexFile(outDir, allKeys, defaultMessages, config);
+}
+
+function extractPlaceholders(value: string): string[] {
+    const matches = value.matchAll(placeholderRegex);
+    const placeholders = new Set<string>();
+    for (const match of matches) {
+        placeholders.add(match[1]);
+    }
+    return Array.from(placeholders);
+}
+
+function escapeTemplateString(value: string): string {
+    // Escape backticks and ${} that are not our placeholders
+    return value
+        .replace(/\\/g, '\\\\')
+        .replace(/`/g, '\\`');
+}
+
+function createMessageFunction(key: string, value: string): string {
+    const placeholders = extractPlaceholders(value);
+    const templateString = value.replace(placeholderRegex, '${params.$1}');
+    const escapedTemplate = escapeTemplateString(templateString);
+
+    if (placeholders.length > 0) {
+        const paramsType = placeholders.map(p => `${p}: string | number`).join(', ');
+        return `export const ${key} = (params: { ${paramsType} }): string => \`${escapedTemplate}\`;`;
+    }
+    return `export const ${key} = (): string => \`${escapedTemplate}\`;`;
+}
+
+function generateIndexFile(outDir: string, allKeys: string[], defaultMessages: Messages, config: GenerateConfig) {
+    const { enabledLanguages } = config;
+
+    const langImports = enabledLanguages
+        .map(lang => `import * as ${lang} from './${lang}.ts';`)
+        .join('\n');
+
+    const langObject = enabledLanguages.join(', ');
+    const languageType = enabledLanguages.map(l => `'${l}'`).join(' | ');
+    const messageExports: string[] = [];
+
+    for (const key of allKeys) {
+        const value = defaultMessages[key] || '';
+        const placeholders = extractPlaceholders(value);
+        const paramsType = placeholders.length > 0
+            ? `params: { ${placeholders.map(p => `${p}: string | number`).join(', ')} }`
+            : '';
+        const paramsArg = paramsType ? 'params' : '';
+
+        messageExports.push(
+            `export const ${key} = (${paramsType}): string => allMessages[getLocale()].${key}(${paramsArg});`
+        );
+    }
+
+    const content = `${getFileHeader()}
+import config from '@/config';
+
+${langImports}
+
+const allMessages = { ${langObject} } as const;
+
+export type Language = ${languageType};
+
+export const defaultLanguage: Language = '${config.defaultLanguage}';
+export const enabledLanguages: readonly Language[] = ${JSON.stringify(config.enabledLanguages)} as const;
+
+let _locale: Language = defaultLanguage;
+
+export const getLocale = (): Language => _locale;
+export const isValidLocale = (locale: unknown): locale is Language => enabledLanguages.includes(locale as Language);
+export const setLocale = (locale: unknown): void => {
+    if (isValidLocale(locale)) {
+        _locale = locale as Language;
+    }
+};
+
+// Message functions
+${messageExports.join('\n\n')}
+`;
+
+    const filePath = path.join(outDir, 'index.ts');
+    fs.writeFileSync(filePath, content, 'utf-8');
+    console.log('✅ Generated messages/index.ts');
+}