Sort community skills alphabetically

Community skills were ordered by when each PR got merged, so newer
entries always landed on the last page. This sorts them alphabetically
by title instead, so a skill's position depends on its name, not on
when it was added.

Also updated CLAUDE.md so new entries get inserted in the right spot
going forward, instead of appended at the end.

Author: mariaelisaaraya

site/CLAUDE.md

@@ -90,7 +90,9 @@ then append to `SKILL_CARD_SOURCES`:
 
 **Ecosystem:** external link, no upstream copy. New entries are picked
 up automatically by the community search, pagination, and llms.txt; no
-other wiring needed.
+other wiring needed. Insert the entry alphabetically by `title`
+(case-insensitive) in `ECOSYSTEM_CARDS`, not appended at the end, so a
+card's position reflects its name rather than merge order.
 
 ```ts
 {

site/README.md

@@ -145,7 +145,9 @@ page. There's no upstream copy — the card just links out to the
 external SKILL.md, and the user copies that URL to install it with
 their agent.
 
-Append to `ECOSYSTEM_CARDS` in `src/data/skills.ts`:
+Insert alphabetically by `title` (case-insensitive) into
+`ECOSYSTEM_CARDS` in `src/data/skills.ts`, not appended at the end, so
+a card's position reflects its name rather than merge order:
 
 ```ts
 {