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/not.ts

@@ -0,0 +1,38 @@
+import type {CodeKeywordDefinition, ErrorNoParams, AnySchema} from "../../types"
+import type {KeywordCxt} from "../../compile/validate"
+import {alwaysValidSchema} from "../../compile/util"
+
+export type NotKeywordError = ErrorNoParams<"not", AnySchema>
+
+const def: CodeKeywordDefinition = {
+  keyword: "not",
+  schemaType: ["object", "boolean"],
+  trackErrors: true,
+  code(cxt: KeywordCxt) {
+    const {gen, schema, it} = cxt
+    if (alwaysValidSchema(it, schema)) {
+      cxt.fail()
+      return
+    }
+
+    const valid = gen.name("valid")
+    cxt.subschema(
+      {
+        keyword: "not",
+        compositeRule: true,
+        createErrors: false,
+        allErrors: false,
+      },
+      valid
+    )
+
+    cxt.failResult(
+      valid,
+      () => cxt.reset(),
+      () => cxt.error()
+    )
+  },
+  error: {message: "must NOT be valid"},
+}
+
+export default def