Frontend uudelleenrakennettu: Astro-komponentit, Wasm pääsäikeessä, ei Workeria

Vanha frontend siirretty temp/. Uusi rakenne:
- StatusBar.astro, Terminal.astro, Editor.astro, Guide.astro
- global.css erillinen
- Wasm pääsäikeessä (ei Worker — yksinkertainen, debugattava)
- Tab-completion, dropdown, projektikortti, Monaco, GUIDE.md
- Ei tokenisointia eikä koodilaboratoriota

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

network-poc/frontend/node_modules/@astrojs/internal-helpers/dist/request.d.ts

@@ -0,0 +1,27 @@
+/**
+ * Utilities for extracting information from `Request`
+ */
+export declare function getFirstForwardedValue(multiValueHeader?: string | string[] | null): string | undefined;
+/**
+ * Checks whether a string looks like an IP address (contains only characters
+ * that can appear in IPv4/IPv6 addresses and is within a reasonable length).
+ *
+ * This is a permissive allowlist — it won't catch every malformed IP, but it
+ * reliably rejects injection payloads. Does NOT use Node.js APIs so it works
+ * in all runtimes (Workers, Deno, etc.).
+ */
+export declare function isValidIpAddress(value: string): boolean;
+/**
+ * Extracts the first value from a potentially multi-value header and validates
+ * that it is a syntactically valid IP address.
+ *
+ * Useful for adapters that read client IP from a platform-specific header
+ */
+export declare function getValidatedIpFromHeader(headerValue: string | string[] | null | undefined): string | undefined;
+/**
+ * Returns the first value associated to the `x-forwarded-for` header,
+ * but only if it is a valid IP address. Returns `undefined` otherwise.
+ *
+ * @param {Request} request
+ */
+export declare function getClientIpAddress(request: Request): string | undefined;