feat: add Tag, TagSuggestion, Connection models and extend Member schema

Adds three new Mongoose models for the community connections feature. Extends
Member with craftTags, communityConnections block, privacy fields for both,
and a connectionRequests notification preference.

server/models/member.js

@@ -90,6 +90,21 @@ const memberSchema = new mongoose.Schema({
     slackDMChannelId: String, // DM channel ID for direct messaging
   },
 
+  craftTags: [String],
+  communityConnections: {
+    topics: [
+      {
+        tagSlug: String,
+        state: { type: String, enum: ['help', 'interested', 'seeking'] },
+      },
+    ],
+    offerPeerSupport: { type: Boolean, default: false },
+    availability: String,
+    slackHandle: String,
+    personalMessage: String,
+    details: String,
+  },
+
   // Privacy settings for profile fields
   privacy: {
     pronouns: {
@@ -137,12 +152,23 @@ const memberSchema = new mongoose.Schema({
       enum: ["public", "members", "private"],
       default: "members",
     },
+    craftTags: {
+      type: String,
+      enum: ["public", "members", "private"],
+      default: "members",
+    },
+    communityConnections: {
+      type: String,
+      enum: ["public", "members", "private"],
+      default: "members",
+    },
   },
 
   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 },