feat(welcome): add Francisco Montes testimonial (#636)

## Summary
- Add a new landing-page testimonial from Francisco Montes, sourced from
user feedback received by email.
- Add the matching Spanish translation in `lang/es.json` (required by
the translation CI check).

The quote was edited for clarity while keeping the user's own words and
intent. It sits just before the co-owner note, which stays last.

## Testing
- `python3 -c "import json; json.load(open('lang/es.json'))"` (valid
JSON)
- Full test suite not run locally: this worktree has no `vendor/`
installed. CI will run `./vendor/bin/pest` including the translation-key
check.

lang/es.json

@@ -2137,6 +2137,7 @@
     "Thank you for developing Whisper Money. The focus on privacy and centralizing finances is an excellent proposition.": "Gracias por desarrollar Whisper Money. El enfoque en la privacidad y en centralizar las finanzas es una propuesta excelente.",
     "I found Whisper Money and instantly knew I needed it. I was stuck doing everything in a spreadsheet — a chore I kept putting off. This makes it effortless.": "Descubrí Whisper Money y supe al instante que lo necesitaba. Estaba haciéndolo todo en una hoja de cálculo, una tarea que acababa posponiendo siempre. Esto lo hace facilísimo.",
     "Categorizing transactions used to eat my whole Sunday. Now the AI does it and gets most of them right, and the few it misses it remembers after I fix them once. I barely touch it anymore.": "Categorizar las transacciones me comía el domingo entero. Ahora lo hace la IA y acierta en casi todas, y las pocas que falla las recuerda en cuanto las corrijo una vez. Ya casi ni lo toco.",
+    "The design is simple and clean, and it's genuinely easy to use. In a few clicks I set up an account, imported my transactions, created a couple of automation rules, and tried the AI. Two days in, and it's the best I've found.": "El diseño es simple y limpio, y de verdad es fácil de usar. En unos pocos clics configuré una cuenta, importé mis transacciones, creé un par de reglas de automatización y probé la IA. Dos días después, es lo mejor que he encontrado.",
     "My accounts sync on their own and everything lands already sorted, so checking my budget takes two minutes instead of an hour. I didn't think I'd keep up with it, but I have.": "Mis cuentas se sincronizan solas y todo llega ya ordenado, así que revisar mi presupuesto me lleva dos minutos en vez de una hora. No pensé que fuese a mantenerlo al día, pero lo he conseguido.",
     "I was wary of letting any app run AI on my bank data. What changed my mind was that it only works for me and isn't fed into some model. Turns out it's accurate too.": "Me daba reparo dejar que una app pasara IA sobre mis datos bancarios. Lo que me convenció fue que solo trabaja para mí y no alimenta ningún modelo. Y resulta que además acierta.",
     "I drop in my bank’s CSV and it works out the columns and categories on its own. The part of doing my finances I used to dread is just gone.": "Suelto el CSV de mi banco y averigua las columnas y las categorías él solo. La parte de ponerme con mis finanzas que más pereza me daba ha desaparecido.",

resources/js/pages/welcome.tsx

@@ -2067,6 +2067,13 @@ export default function Welcome({
                 "Fast, clean, and a dark mode that doesn't fry my eyes at night. And it isn't trying to sell my data. That's everything I wanted.",
             ),
         },
+        {
+            name: 'Francisco Montes',
+            gravatar: 'c81f10150ae734978a346a7d617712ad',
+            text: __(
+                "The design is simple and clean, and it's genuinely easy to use. In a few clicks I set up an account, imported my transactions, created a couple of automation rules, and tried the AI. Two days in, and it's the best I've found.",
+            ),
+        },
         {
             name: 'Víctor Falcón (co-owner)',
             gravatar: '50901af884c50a8f12804b0cf3aeb98a',