feat(site): Redirect old links, flag offline forms, credit partners

[WillieCubed]

TL;DR

Old lvwwd.org links now land on the right page instead of a 404, forms tell a rider on a bus with no
signal that nothing was sent, and a partner's sign-up is now credited to the link that brought it,
with one tablet able to sign up person after person.

Overview of Changes

Old links keep working

The campaign was shared as lvwwd.org/wwd, www.lvwwd.org and section links of the old one-page site,
such as lvwwd.org/#giveaway. The Worker now sends /wwd and /wwd/ to Home with one permanent redirect,
and any page address that ends in a slash to the address without it, keeping the query string, so
/giveaway/?ref=x becomes /giveaway?ref=x. A request never takes more than one redirect. The API and
admin views keep their own addresses, and a form being submitted is never redirected. Since browsers
never send the part of a URL after #, a small script in Home's head sends the four old section
links (giveaway, resources, partners, take part) to their new pages, replacing the address so Back
returns to where the visitor came from.

Forms say plainly when there's no connection

On a bus the signal comes and goes. Before this, tapping "Sign up" or sending a trip with no
connection did nothing visible, and a screen reader said nothing, so a person could believe they
were signed up or counted when they were not. A small shared script now watches the phone's online
status on Sign up, My week and Get my link. While offline, each form that needs a connection shows a
notice above its buttons and dims them with aria-disabled; a tap sends nothing and the notice is
read again, but what the visitor typed, picked or attached stays in place. When the connection
returns, the notice goes and screen readers hear "You're back online." A personal link opened
offline gets the saved offline page, which now says to open the link again and retries by itself
once the phone reconnects.

Partner credit and one tablet, many sign-ups

Partner groups reach people LVBT can't, and their volunteers sign people up in person at libraries,
meetings and campus tables. A partner's link or QR code adds ?ref=<short name> to any page; the
header script keeps it for that browser tab, the last one opened wins, and the sign-up form sends it
along. The Worker matches it against the partner roster, ignoring capital letters, and saves it on
the new sign-up — a name that matches no partner is dropped, and nothing on the page names the
partner. The credit never changes afterward: editing details, a later partner link, or signing up
again with the same contact leaves it as it was. The admin page lists every roster partner with its
count of sign-ups.

A signed-in tablet at a table now offers "Sign up someone else" on the sign-up page and at the foot
of My week. It signs the device out, clears the last person's bingo card from it, and shows the
empty form with "Ready for the next person. The last sign-up is saved," moving focus there so a
screen reader announces it. Without a connection the tablet stays signed in and reports that it
couldn't reach the server. Sign-ups made this way are marked as from a shared device, for the
newsletter sign-up to record later, and the button disappears once sign-up closes.

Because one Wi-Fi address at a library table now sends many sign-ups, the rate limit changed from 5
an hour to 20 tries a minute per connection, with "Too many tries. Wait a minute, then try again."
Migration 0005 adds the two new columns; the Worker writes them after the sign-up and never lets
them block it, so lvwwd.org keeps taking sign-ups until the migration is applied. The Privacy page
now lists both fields and what the browser tab keeps.

Follow-ups

None.

🤖 Generated with Claude Code