Make Company optional on the waitlist form

UX:
- Form labels Company "optional"; client validation no longer flags it
  as Required when blank.

Server:
- Drop the "Company is required" throw in normalizeSignup. Email-domain
  inference still runs as a "free upgrade" for corporate emails, but
  freemail addresses with a blank field are now accepted with company =
  null (the schema already allows null).

Lower friction for the waitlist while preserving the auto-inferred
company name when we can detect one.

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Co-Authored-By: Devin <158243242+devin-ai-integration[bot]@users.noreply.github.com>

Author: backnotprop

apps/marketing/src/pages/workspaces/index.astro

@@ -153,7 +153,9 @@ const teamSizes = [
                 <input type="email" name="email" placeholder="jane@company.com" autocomplete="email" maxlength="320" />
               </div>
               <div class="ws-field">
-                <label class="ws-label">Company</label>
+                <label class="ws-label">
+                  Company <span class="ws-opt">optional</span>
+                </label>
                 <input type="text" name="company" placeholder="Acme Inc." autocomplete="organization" maxlength="160" />
               </div>
             </div>
@@ -475,7 +477,8 @@ const teamSizes = [
         else if (!/^[^\s@]+@[^\s@.]+\.[^\s@]+$/.test(email)) {
           showErr(get('email'), 'Looks invalid'); ok = false;
         }
-        if (!company) { showErr(get('company'), 'Required'); ok = false; }
+        // Company is optional now; the worker fills it in from the email
+        // domain when possible, otherwise stores null.
         if (!team_size) {
           showErr(form.querySelector('[data-field="teamSize"]'), 'Pick one');
           ok = false;

apps/waitlist-service/core/validation.ts

@@ -60,7 +60,7 @@ export interface RawSignup {
 
 export interface NormalizedSignup {
   email: string;
-  company: string;
+  company: string | null;
   company_inferred: boolean;
   team_size: string;
   note: string | null;
@@ -145,9 +145,10 @@ export function normalizeSignup(raw: RawSignup): NormalizedSignup {
   const email = emailRaw.toLowerCase();
   if (!EMAIL_RE.test(email)) throw new ValidationError("Email looks invalid");
 
-  // Company is required by the form. If a caller leaves it blank we still
-  // try the email-domain inference — better to capture *something* than to
-  // 400 someone who hit "submit" without filling the field.
+  // Company is optional from the form's perspective. If a caller leaves it
+  // blank, try the email-domain inference as a "free upgrade" so corporate
+  // emails still land with a usable company name. If even that fails (e.g.
+  // freemail like @gmail.com), we just store null — schema allows it.
   let company = trimStr(raw.company, 160);
   let companyInferred = false;
   if (!company) {
@@ -157,7 +158,6 @@ export function normalizeSignup(raw: RawSignup): NormalizedSignup {
       companyInferred = true;
     }
   }
-  if (!company) throw new ValidationError("Company is required");
 
   const teamSizeRaw = trimStr(raw.team_size, 16)?.toLowerCase() ?? null;
   if (!teamSizeRaw || !ALLOWED_TEAM_SIZES.has(teamSizeRaw)) {