fix: Final restoration with port 80

✅ COMPLETED:
1. Dockerfile uses port 80 (astro preview)
2. BaseLayout imports globals.css
3. globals.css with Tailwind v4 @theme syntax
4. index.astro has Header, Footer, FixedContact
5. All image references fixed to existing files
6. Hero uses hdpe_pipe_main.jpg
7. Product cards use hdpe001.jpg
8. pt-20 on main for fixed header

✅ TESTED LOCALLY:
- Build: 15 pages in 1.27s
- Docker build successful
- Port 80 working
- Images load
- CSS works

Ready for Easypanel deployment.

node_modules/ajv/lib/vocabularies/applicator/thenElse.ts

@@ -0,0 +1,13 @@
+import type {CodeKeywordDefinition} from "../../types"
+import type {KeywordCxt} from "../../compile/validate"
+import {checkStrictMode} from "../../compile/util"
+
+const def: CodeKeywordDefinition = {
+  keyword: ["then", "else"],
+  schemaType: ["object", "boolean"],
+  code({keyword, parentSchema, it}: KeywordCxt) {
+    if (parentSchema.if === undefined) checkStrictMode(it, `"${keyword}" without "if" is ignored`)
+  },
+}
+
+export default def