Donation links as clean as they can be, on GitHub and on the Support page

Patreon becomes GitHub's built-in `patreon:` entry, so the sidebar shows
patreon.com/MeshTerm with its icon like Buy Me a Coffee, and the Support
page carries the same short URL (a smaller QR code too). PayPal stays the
hosted donate button, only without its scheme in FUNDING.yml: a paypal.me
link would let a donor pay as goods and services and claim a refund for an
item that never arrived, which the donate button's donation label avoids.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>

.github/FUNDING.yml

@@ -1,6 +1,11 @@
 # Kept in step with meshterm/assets/pages/support.md deliberately. If the app offers a
 # way to chip in and this file doesn't, the two have drifted and one of them is lying.
 buy_me_a_coffee: johnputer
+patreon: MeshTerm
+# PayPal is not one of GitHub's built-in platforms, so it is a custom link, written
+# without a scheme so the sidebar shows it as cleanly as it can. It stays the donate
+# button, not a paypal.me link: a payment through the button is recorded as a donation,
+# which PayPal's purchase protection does not cover, so a donor cannot claim a refund
+# for an item that never arrived.
 custom:
-  - "https://www.patreon.com/cw/MeshTerm"
-  - "https://www.paypal.com/donate/?hosted_button_id=5RATNEJP2K5U6"
+  - "paypal.com/donate/?hosted_button_id=5RATNEJP2K5U6"