Customer accounts, order tracking, and purchase reviews (#8)

## Summary
- Slim the public contact form to email, interest, and message. Name, phone, and address live on the customer profile instead.
- Customers can register, sign in, save shipping details, and view order history. Logged-in checkout creates a Stripe Customer and saves cards on Stripe (`setup_future_usage`); we only store `stripe_customer_id`.
- Shipment tracking: EasyPost tracker lookup + webhook, plus paste-in numbers from Pirate Ship/Shippo. Customers see carrier status on their orders; `dispatch_due` refreshes open shipments.
- Product reviews (1–5) only after a paid/fulfilled purchase of that product.

Fixes #7

## Test plan
- [ ] Contact form submits with only email + message; extra name/phone/address fields are ignored
- [ ] Register, sign in, save profile (name/phone/shipping)
- [ ] Guest checkout still works; after signup, prior orders with that email show in history
- [ ] Logged-in checkout prefills shipping and does not collect card data locally
- [ ] Portal: buy label or paste a Pirate Ship tracking number, confirm status/events; customer order page shows tracking
- [ ] Product page: non-buyers cannot review; buyers can leave one 1–5 star review
- [ ] Non-staff users hitting `/portal/` redirect to `/account/`

Reviewed-on: #8

site/public/forms.py

@@ -11,88 +11,9 @@ class ContactForm(forms.Form):
         ("other", "Something else"),
     ]
 
-    first_name = forms.CharField(
-        max_length=100,
-        widget=forms.TextInput(attrs={"class": "form-input", "id": "contact-first-name"}),
-    )
-    last_name = forms.CharField(
-        max_length=100,
-        required=False,
-        widget=forms.TextInput(attrs={"class": "form-input", "id": "contact-last-name"}),
-    )
     email = forms.EmailField(
         widget=forms.EmailInput(attrs={"class": "form-input", "id": "contact-email"}),
     )
-    phone = forms.CharField(
-        max_length=32,
-        required=False,
-        widget=forms.TextInput(attrs={"class": "form-input", "id": "contact-phone"}),
-    )
-    address_line1 = forms.CharField(
-        max_length=200,
-        required=False,
-        label="Street address",
-        widget=forms.TextInput(
-            attrs={
-                "class": "form-input",
-                "id": "contact-address-line1",
-                "autocomplete": "off",
-                "data-ac": "line1",
-            }
-        ),
-    )
-    address_line2 = forms.CharField(
-        max_length=200,
-        required=False,
-        label="Apt / suite",
-        widget=forms.TextInput(
-            attrs={
-                "class": "form-input",
-                "id": "contact-address-line2",
-                "autocomplete": "address-line2",
-                "data-ac": "line2",
-            }
-        ),
-    )
-    address_city = forms.CharField(
-        max_length=100,
-        required=False,
-        label="City",
-        widget=forms.TextInput(
-            attrs={
-                "class": "form-input",
-                "id": "contact-address-city",
-                "autocomplete": "address-level2",
-                "data-ac": "city",
-            }
-        ),
-    )
-    address_state = forms.CharField(
-        max_length=32,
-        required=False,
-        label="State",
-        widget=forms.TextInput(
-            attrs={
-                "class": "form-input",
-                "id": "contact-address-state",
-                "autocomplete": "address-level1",
-                "data-ac": "state",
-            }
-        ),
-    )
-    address_zip = forms.CharField(
-        max_length=20,
-        required=False,
-        label="ZIP",
-        widget=forms.TextInput(
-            attrs={
-                "class": "form-input",
-                "id": "contact-address-zip",
-                "autocomplete": "postal-code",
-                "data-ac": "zip",
-            }
-        ),
-    )
     interest = forms.ChoiceField(
         choices=INTEREST_CHOICES,
         widget=forms.Select(attrs={"class": "form-input", "id": "contact-interest"}),