refactor(peer-support): update remaining UI references (Phase 2)

Dashboard: replace "Peer Support" card and "Book a peer session"
quick action with community ecology links.

Welcome: replace "Peer Support" resource card with "Community
Ecology" heading and link to /ecology.

Members index: rename active filter tag from "Offering Peer
Support" to "Offering Support". The underlying filter still works
correctly (queries communityEcology.offerPeerSupport).

app/pages/members/index.vue

@@ -111,7 +111,7 @@
         v-if="peerSupportFilter && peerSupportFilter !== 'all'"
         class="af-tag"
       >
-        Offering Peer Support
+        Offering Support
         <button type="button" @click="clearPeerSupportFilter">&times;</button>
       </span>
       <span v-for="slug in selectedCraftTags" :key="'c-' + slug" class="af-tag">