refactor(community): rename Community Connections → Community Ecology

Simplify the feature to pure discovery (filter by topic, see matching
members, copy Slack handle). Drop the connection request/confirm flow
entirely — Connection model, 7 API endpoints, useConnections composable,
and TagInput component deleted.

- Rename communityConnections → communityEcology in schema, API, pages
- Delete legacy fields: offering, lookingFor, peerSupport
- New /ecology page, /api/ecology/suggestions, community-ecology.patch
- Nav: "Connections" → "Ecology", remove pending-count badge
- Fix auth/member.get.js missing craftTags + communityEcology
- Add community_ecology_updated activity log type
- Expose slackHandle conditionally when offerPeerSupport is true
- Add migration script at scripts/migrate-to-ecology.js (run before deploy)

server/models/member.js

@@ -69,29 +69,10 @@ const memberSchema = new mongoose.Schema({
     website: String,
     other: String,
   },
-  offering: {
-    text: String,
-    tags: [String],
-  },
-  lookingFor: {
-    text: String,
-    tags: [String],
-  },
   showInDirectory: { type: Boolean, default: true },
 
-  // Peer support settings
-  peerSupport: {
-    enabled: { type: Boolean, default: false },
-    skillTopics: [String], // Auto-populated from offering.tags, editable
-    supportTopics: [String], // Curated conversational/emotional support topics
-    availability: String,
-    personalMessage: String,
-    slackUsername: String,
-    slackDMChannelId: String, // DM channel ID for direct messaging
-  },
-
   craftTags: [String],
-  communityConnections: {
+  communityEcology: {
     topics: [
       {
         tagSlug: String,
@@ -142,22 +123,12 @@ const memberSchema = new mongoose.Schema({
       enum: ["public", "members", "private"],
       default: "members",
     },
-    offering: {
-      type: String,
-      enum: ["public", "members", "private"],
-      default: "members",
-    },
-    lookingFor: {
-      type: String,
-      enum: ["public", "members", "private"],
-      default: "members",
-    },
     craftTags: {
       type: String,
       enum: ["public", "members", "private"],
       default: "members",
     },
-    communityConnections: {
+    communityEcology: {
       type: String,
       enum: ["public", "members", "private"],
       default: "members",
@@ -167,8 +138,6 @@ const memberSchema = new mongoose.Schema({
   notifications: {
     events: { type: Boolean, default: true },
     updates: { type: Boolean, default: true },
-    peerRequests: { type: Boolean, default: true },
-    connectionRequests: { type: Boolean, default: true },
   },
 
   inviteEmailSent: { type: Boolean, default: false },