Rename communityEcology → board across frontend, add Board nav, update redirects

- Add Board to exploreItems in AppNavigation
- Update ecology.vue + connections.vue redirects to /board
- Rename all communityEcology refs to board in member profiles, dashboard, admin, onboarding
- Update API path /api/members/me/community-ecology → /api/members/me/board

app/pages/member/dashboard.vue

@@ -120,16 +120,16 @@
             <div class="content-block">
               <div class="section-label">Quick Actions</div>
               <NuxtLink
-                to="/ecology"
+                to="/board"
                 class="quick-action"
                 :class="{ disabled: !canPeerSupport }"
                 :title="
                   !canPeerSupport
-                    ? 'Complete your membership to access community ecology'
+                    ? 'Complete your membership to access the board'
                     : ''
                 "
               >
-                Community ecology<span class="arrow">&rarr;</span>
+                Board<span class="arrow">&rarr;</span>
               </NuxtLink>
               <NuxtLink to="/member/profile" class="quick-action">
                 Update your profile<span class="arrow">&rarr;</span>
@@ -198,8 +198,8 @@
                   Connect with other members through shared interests and
                   cooperative topics.
                 </p>
-                <NuxtLink to="/ecology" class="section-link">
-                  Browse community ecology &rarr;
+                <NuxtLink to="/board" class="section-link">
+                  Browse the board &rarr;
                 </NuxtLink>
               </DashedBox>
             </div>