fix(04-07): remove debug code — public page restored

Root cause: INTERNAL_SECRET was on same line as HOST= in .env (no trailing
newline when appended), so proxy middleware got empty secret and rejected
all /api/internal/validate-* calls → rewrote every /client/* request to
/not-found without running the page component.

src/app/client/[token]/page.tsx

@@ -90,8 +90,6 @@ export default async function ClientPage({
   params: Promise<{ token: string }>;
 }) {
   const { token } = await params;
-  const { appendFileSync } = await import("fs");
-  appendFileSync("/tmp/clienthub-debug.log", `[${new Date().toISOString()}] PAGE token=${token}\n`);
 
   const clientData = await getCachedClientData(token);
   if (!clientData) notFound();

src/lib/client-view.ts

@@ -133,9 +133,6 @@ export interface ClientProjectSummary {
 export async function getClientWithProjectsByToken(
   tokenOrSlug: string
 ): Promise<ClientProjectSummary | null> {
-  const fs = await import("fs");
-  const logLine = `[${new Date().toISOString()}] lookup: ${tokenOrSlug}\n`;
-  fs.appendFileSync("/tmp/clienthub-debug.log", logLine);
   try {
   // Try slug first
   let clientRows = await db
@@ -178,8 +175,7 @@ export async function getClientWithProjectsByToken(
 
   return { client, projects: activeProjects };
   } catch (err) {
-    const fs = await import("fs");
-    fs.appendFileSync("/tmp/clienthub-debug.log", `[${new Date().toISOString()}] ERROR: ${String(err)}\nStack: ${(err as Error)?.stack ?? "no stack"}\n`);
+    console.error("[client-view] getClientWithProjectsByToken error:", err);
     return null;
   }
 }