Store testimonial avatars locally

- Download avatar images to static/img/avatars/
- Update Testimonials to use local paths
- Add comment with source URLs for future updates

Prevents broken images if external URLs change/expire.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

Author: DanGould

src/components/Testimonials/index.tsx

@@ -1,5 +1,14 @@
 import Marquee from "react-fast-marquee";
 
+/*
+ * Avatar source URLs (for future updates):
+ * - odell: https://avatars.githubusercontent.com/u/50266466
+ * - elflaco: https://x.com/AureoliAugust
+ * - gigi: https://dergigi.com/assets/images/avatar.jpg
+ * - adamback: https://x.com/adam3us
+ * - sethforprivacy: https://x.com/saborprivacy
+ */
+
 const Testimonial = ({ text, name, image }) => (
   <div className="flex flex-col items-start justify-between gap-4 mx-4 w-96 bg-tertiary rounded-lg p-6 shadow-lg">
     <blockquote className="border-l-secondary text-left italic text-sm">{text}</blockquote>
@@ -22,29 +31,29 @@ export default function Testimonials() {
           <Testimonial
             text="Payjoin usage improves the privacy of all bitcoiners by breaking the common input ownership heuristic - you can no longer assume all inputs belong to the sender."
             name="ODELL"
-            image="https://avatars.githubusercontent.com/u/50266466?v=4"
+            image="/img/avatars/odell.jpg"
           />
           <Testimonial
             text="Payjoin doesn't even have to be widely used to make the common input ownership heuristic unusable. Since payjoins are indistinguishable on-chain, it should suffice to have payjoin optionally available in most wallets."
             name="El Flaco"
-            image="https://pbs.twimg.com/profile_images/1819046599768612871/S2BADZaw_400x400.jpg"
+            image="/img/avatars/elflaco.jpg"
           />
           <Testimonial
             text="More payjoin adoption would be a good thing. payjoin = https"
             name="Gigi"
-            image="https://dergigi.com/assets/images/avatar.jpg"
+            image="/img/avatars/gigi.jpg"
           />
           <Testimonial
             text="Wallet side p2p PayJoin is the future IMO... Bitcoin needs more PayJoin and p2p capable PayJoin wallet interop."
             name="Adam Back"
-            image="https://pbs.twimg.com/profile_images/1364645619705511936/IGTT_tnL_400x400.jpg"
+            image="/img/avatars/adamback.jpg"
           />
           <Testimonial
             text="Using Payjoin when spending is so underrated.
 
 The ability to break common-input-ownership heuristic *and* completely obfuscate amount sent is extremely powerful."
             name="Seth For Privacy"
-            image="https://pbs.twimg.com/profile_images/1507020330954489862/MNnJ320U_400x400.jpg"
+            image="/img/avatars/sethforprivacy.jpg"
           />
         </div>
       </Marquee>