refactor(board): delete old board routes, absorb slackHandle into profile PATCH

- Delete server/api/members/me/board.patch.js and server/api/board/suggestions.get.js
- Add boardSlackHandle to memberProfileUpdateSchema; remove boardPrivacy
- profile.patch.js: write boardSlackHandle -> board.slackHandle; drop boardPrivacy
- Remove privacy.board field from Member model
- onboarding/status.get.js: hasProfileTags now requires only craftTags; hasEngagedBoard uses BoardPost.exists
- onboarding/track.post.js: graduation check uses BoardPost.exists instead of board.topics elemMatch
- members/[id].get.js and directory.get.js: reduce board response to slackHandle only; drop connectionTag and peerSupport filters

server/api/board/suggestions.get.js

@@ -1,96 +0,0 @@
-import Member from '../../models/member.js'
-import { requireAuth } from '../../utils/auth.js'
-
-export default defineEventHandler(async (event) => {
-  const member = await requireAuth(event)
-  const memberId = member._id
-
-  const topics = member.board?.topics || []
-  if (!topics.length) {
-    return { suggestions: [] }
-  }
-
-  const query = getQuery(event)
-  const filterTag = query.tag || null
-
-  let myTopics = topics
-  if (filterTag) {
-    myTopics = myTopics.filter((t) => t.tagSlug === filterTag)
-  }
-  if (!myTopics.length) {
-    return { suggestions: [] }
-  }
-
-  const mySlugs = myTopics.map((t) => t.tagSlug)
-
-  const candidates = await Member.find({
-    _id: { $ne: memberId },
-    status: 'active',
-    'board.topics.tagSlug': { $in: mySlugs },
-  })
-    .select('name avatar craftTags circle board privacy')
-    .lean()
-
-  if (!candidates.length) {
-    return { suggestions: [] }
-  }
-
-  const myTopicMap = {}
-  for (const t of myTopics) {
-    myTopicMap[t.tagSlug] = t.state
-  }
-
-  const suggestions = []
-  for (const candidate of candidates) {
-    const theirTopics = candidate.board?.topics || []
-    const matchingTags = []
-
-    for (const theirTopic of theirTopics) {
-      const myState = myTopicMap[theirTopic.tagSlug]
-      if (!myState) continue
-
-      matchingTags.push({
-        tagSlug: theirTopic.tagSlug,
-        yourState: myState,
-        theirState: theirTopic.state,
-      })
-    }
-
-    if (!matchingTags.length) continue
-
-    // Privacy filter: only expose fields the candidate allows to other members
-    const privacy = candidate.privacy || {}
-    const filtered = {
-      _id: candidate._id,
-      name: candidate.name,
-      circle: candidate.circle,
-    }
-
-    const avatarPrivacy = privacy.avatar || 'public'
-    if (avatarPrivacy === 'public' || avatarPrivacy === 'members') {
-      filtered.avatar = candidate.avatar
-    }
-
-    const craftTagsPrivacy = privacy.craftTags || 'members'
-    if (craftTagsPrivacy === 'public' || craftTagsPrivacy === 'members') {
-      filtered.craftTags = candidate.craftTags
-    }
-
-    // Expose slackHandle only when the candidate has opted into peer support.
-    // Slack handle is the contact-in-place path — without it, there is no way
-    // for the current member to reach out.
-    if (candidate.board?.offerPeerSupport && candidate.board?.slackHandle) {
-      filtered.slackHandle = candidate.board.slackHandle
-    }
-
-    suggestions.push({
-      member: filtered,
-      matchingTags,
-      matchCount: matchingTags.length,
-    })
-  }
-
-  suggestions.sort((a, b) => b.matchCount - a.matchCount)
-
-  return { suggestions }
-})