Move the demo market to Mexico City, priced in US dollars

The showcase was a Barcelona market: Catalan names, +34 numbers, euro
rates and "Carrer Example 12" on every job. Presented to a Mexican
client, all of that reads as somebody else's product.

City comes from NEXT_PUBLIC_CITY_* as before, now Ciudad de México at
19.4326/-99.1332, with MAPBOX_COUNTRY=mx. The seed's fallbacks were
Barcelona literals, so an unset env quietly seeded a different city
than the app rendered — they now agree.

Two db tests pinned the Barcelona centre as a hardcoded constant, which
is why the deck returned zero cards on the first run here: every pro was
a continent outside the radius. They read the same env as the seed now,
so the trap cannot recur.

Money: formatCents defaults to USD/en-US, and the nine hardcoded euro
signs across the card, search rows, quote strip and forms are dollars.
The rate NUMBERS are unchanged and still read high for CDMX — that is a
pricing decision, not a currency one, and is left alone deliberately.

Seed people are Mexican, addressed on real Roma/Condesa streets rotated
by index rather than one placeholder repeated. Phones moved to +52 55,
which moves the demo login to +525500000000 / 000000.

Also in here, from the same session:
- Sending a job now confirms. The mutation always succeeded; the sheet
  just closed with no receipt, which from the customer's side is
  indistinguishable from a dead button. Dismissing that receipt resolves
  as 'sent', so the card does not return to the deck.
- Media moves to DigitalOcean Spaces, with the public origin derived
  from bucket and region instead of a second env var to keep in sync.
- Managed-Postgres TLS: DATABASE_CA_CERT takes a path or inline PEM.
- The client-facing project panel beside the running app.
- Two profiles removed and four renamed to match their photos.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

DESIGN.md

@@ -1,8 +1,8 @@
-# Linkder Design System
+# Linkdr Design System
 
-**Version 1.0** · derived from the wix.com design language, adapted for Linkder.
+**Version 1.0** · derived from the wix.com design language, adapted for Linkdr.
 
-This document is the single source of truth for how Linkder looks. Every screen must be
+This document is the single source of truth for how Linkdr looks. Every screen must be
 buildable from the tokens and components below. If a screen needs something that is not in
 here, add it here first, then build it.
 
@@ -15,7 +15,7 @@ whitespace rhythm. Values below were read off the live stylesheet, not eyeballed
 Adopted: typefaces (Wix Madefor Display / Text, published under the SIL Open Font License via
 Google Fonts), colour ramps, radius and spacing conventions, component geometry.
 
-**Not** adopted: Wix's logo, wordmark, product names, illustrations or photography. Linkder is
+**Not** adopted: Wix's logo, wordmark, product names, illustrations or photography. Linkdr is
 not affiliated with Wix and must never present itself as such.
 
 ---
@@ -153,7 +153,7 @@ Display sizes use `clamp()` so one token works from 360px to desktop.
 
 ## 4. Space and layout
 
-**Linkder is a mobile-only product.** There is no desktop layout, no marketing site and no
+**Linkdr is a mobile-only product.** There is no desktop layout, no marketing site and no
 responsive breakpoint work. Design for a 360–430px viewport and nothing else. On a wider
 screen the app renders as a single 480px column centred on `ink-50` — that is a courtesy for
 someone who opened it on a laptop, not a layout to design for.