diff --git a/server/src/model/teams/teamAccess.db.js b/server/src/model/teams/teamAccess.db.js
index e21fe9a..6ae8496 100644
--- a/server/src/model/teams/teamAccess.db.js
+++ b/server/src/model/teams/teamAccess.db.js
@@ -41,6 +41,49 @@ async function activeGrants(teamId) {
   )
 }
 
+/** How many active grants a team currently holds — the §2.5 per-Team cap reads this. */
+async function activeGrantCount(teamId) {
+  const rows = await query(
+    'SELECT COUNT(*) AS n FROM team_forum_grants WHERE team_id = ? AND revoked_at IS NULL',
+    [teamId],
+  )
+  return Number(rows[0]?.n || 0)
+}
+
+/**
+ * Issue a grant.
+ *
+ * Writes nothing but this table — that is the non-contamination invariant, and it
+ * is a property of this function being the ONLY writer on the grant path rather
+ * than of anyone remembering it at the call site. The username snapshots are
+ * taken here so the ledger still reads after either account is deleted (§2.10).
+ */
+async function insertGrant({ teamId, userId, username, grantedBy, grantedUsername, reason }) {
+  const res = await query(
+    `INSERT INTO team_forum_grants (team_id, user_id, username, granted_by, granted_username, reason)
+     VALUES (?, ?, ?, ?, ?, ?)`,
+    [teamId, userId, username, grantedBy, grantedUsername, reason ?? null],
+  )
+  return res.insertId
+}
+
+/**
+ * Revoke the active grant, if there is one.
+ *
+ * An UPDATE of the existing row rather than a delete: the table is a ledger as
+ * well as the current state, and `revoked_at` is what moves a row out of the
+ * unique key (the generated `active_marker` goes NULL) while keeping the history.
+ */
+async function revokeGrant({ teamId, userId, revokedBy, revokedUsername, reason }) {
+  const res = await query(
+    `UPDATE team_forum_grants
+        SET revoked_at = NOW(), revoked_by = ?, revoked_username = ?, revoke_reason = ?
+      WHERE team_id = ? AND user_id = ? AND revoked_at IS NULL`,
+    [revokedBy, revokedUsername, reason ?? null, teamId, userId],
+  )
+  return res.affectedRows > 0
+}
+
 // ── team_leader_overrides (§2.5.1) ─────────────────────────────────────────
 
 const OVERRIDE_COLUMNS = 'team_id, member_key, effect, actor_user_id, actor_username, reason, created_at'
@@ -87,6 +130,9 @@ module.exports = {
   activeGrant,
   grantLedger,
   activeGrants,
+  activeGrantCount,
+  insertGrant,
+  revokeGrant,
   overridesForTeam,
   overrideFor,
   setOverride,
diff --git a/server/src/model/teams/teamForum.db.js b/server/src/model/teams/teamForum.db.js
new file mode 100644
index 0000000..0647f30
--- /dev/null
+++ b/server/src/model/teams/teamForum.db.js
@@ -0,0 +1,236 @@
+// SQL for the four forum tables (TEAMS.md §5.2, §5.2a).
+//
+// Kept apart from teamAccess.db.js for the same reason that file is kept apart
+// from teams.db.js: forum CONTENT and forum ACCESS are different questions, and a
+// query here that read `team_members` to decide who may see a thread would be the
+// exact collapse §2.5 forbids. Nothing in this file resolves access; callers hand
+// it a decision the resolver already made.
+
+const { query } = require('../../utils/db')
+
+const THREAD_COLUMNS = `
+  id, team_id, type, title, created_by, created_username, created_at,
+  last_post_at, post_count, pinned, locked, status`
+
+const POST_COLUMNS = `
+  id, thread_id, author_user_id, author_username, body_html, created_at,
+  edited_at, edited_by, status`
+
+// ── threads ────────────────────────────────────────────────────────────────
+
+/**
+ * A Team's threads, newest activity first with pinned rows on top.
+ *
+ * `includeHidden` is the staff/leader view. Hidden is not deleted: a hidden
+ * thread stays in the ledger and comes back with `unhide`, which is why the
+ * status filter is a parameter rather than a WHERE clause everyone remembers.
+ */
+async function threadsByTeam(teamId, { includeHidden = false, limit = 50, offset = 0 } = {}) {
+  const statuses = includeHidden ? "('visible','hidden')" : "('visible')"
+  return query(
+    `SELECT ${THREAD_COLUMNS} FROM team_forum_threads
+      WHERE team_id = ? AND status IN ${statuses}
+      ORDER BY pinned DESC, COALESCE(last_post_at, created_at) DESC, id DESC
+      LIMIT ? OFFSET ?`,
+    [teamId, limit, offset],
+  )
+}
+
+async function threadById(id) {
+  const rows = await query(`SELECT ${THREAD_COLUMNS} FROM team_forum_threads WHERE id = ? LIMIT 1`, [id])
+  return rows[0] || null
+}
+
+async function insertThread({ teamId, type, title, createdBy, createdUsername }) {
+  const res = await query(
+    `INSERT INTO team_forum_threads (team_id, type, title, created_by, created_username, last_post_at, post_count)
+     VALUES (?, ?, ?, ?, ?, NOW(), 0)`,
+    [teamId, type, title, createdBy, createdUsername],
+  )
+  return res.insertId
+}
+
+/** Apply one moderation action's effect. The LEDGER row is written separately. */
+async function setThreadFlags(id, { pinned, locked, status }) {
+  const sets = []
+  const args = []
+  if (pinned !== undefined) { sets.push('pinned = ?'); args.push(pinned ? 1 : 0) }
+  if (locked !== undefined) { sets.push('locked = ?'); args.push(locked ? 1 : 0) }
+  if (status !== undefined) { sets.push('status = ?'); args.push(status) }
+  if (!sets.length) return false
+  args.push(id)
+  const res = await query(`UPDATE team_forum_threads SET ${sets.join(', ')} WHERE id = ?`, args)
+  return res.affectedRows > 0
+}
+
+// ── posts ──────────────────────────────────────────────────────────────────
+
+async function postsByThread(threadId, { includeHidden = false } = {}) {
+  const statuses = includeHidden ? "('visible','hidden')" : "('visible')"
+  return query(
+    `SELECT ${POST_COLUMNS} FROM team_forum_posts
+      WHERE thread_id = ? AND status IN ${statuses} ORDER BY created_at, id`,
+    [threadId],
+  )
+}
+
+async function postById(id) {
+  const rows = await query(`SELECT ${POST_COLUMNS} FROM team_forum_posts WHERE id = ? LIMIT 1`, [id])
+  return rows[0] || null
+}
+
+/**
+ * Append a post and move the thread's counters in the same breath.
+ *
+ * Two statements rather than a trigger: the counters are a denormalisation for
+ * the thread list, and a trigger would put half the write in the schema where
+ * nobody reading this file would find it.
+ */
+async function insertPost({ threadId, authorUserId, authorUsername, bodyHtml }) {
+  const res = await query(
+    `INSERT INTO team_forum_posts (thread_id, author_user_id, author_username, body_html)
+     VALUES (?, ?, ?, ?)`,
+    [threadId, authorUserId, authorUsername, bodyHtml],
+  )
+  await query(
+    'UPDATE team_forum_threads SET post_count = post_count + 1, last_post_at = NOW() WHERE id = ?',
+    [threadId],
+  )
+  return res.insertId
+}
+
+async function setPostStatus(id, status) {
+  const res = await query('UPDATE team_forum_posts SET status = ? WHERE id = ?', [status, id])
+  return res.affectedRows > 0
+}
+
+// ── the moderation ledger (append-only) ────────────────────────────────────
+
+async function insertModeration({ teamId, targetType, targetId, action, actorUserId, actorUsername, actorRole, reason }) {
+  await query(
+    `INSERT INTO team_forum_moderation
+       (team_id, target_type, target_id, action, actor_user_id, actor_username, actor_role, reason)
+     VALUES (?, ?, ?, ?, ?, ?, ?, ?)`,
+    [teamId, targetType, targetId, action, actorUserId, actorUsername, actorRole, reason ?? null],
+  )
+}
+
+async function moderationForTeam(teamId, { limit = 100, offset = 0 } = {}) {
+  return query(
+    `SELECT id, team_id, target_type, target_id, action, actor_user_id, actor_username,
+            actor_role, reason, created_at
+       FROM team_forum_moderation WHERE team_id = ?
+      ORDER BY created_at DESC, id DESC LIMIT ? OFFSET ?`,
+    [teamId, limit, offset],
+  )
+}
+
+// ── uploads (§5.2a) ────────────────────────────────────────────────────────
+
+const UPLOAD_COLUMNS = `
+  id, team_id, post_id, uploader_user_id, uploader_username, filename, mimetype,
+  byte_size, created_at, deleted_at, deleted_by`
+
+async function insertUpload({ teamId, postId, uploaderUserId, uploaderUsername, filename, mimetype, byteSize }) {
+  const res = await query(
+    `INSERT INTO team_forum_uploads
+       (team_id, post_id, uploader_user_id, uploader_username, filename, mimetype, byte_size)
+     VALUES (?, ?, ?, ?, ?, ?, ?)`,
+    [teamId, postId ?? null, uploaderUserId, uploaderUsername, filename, mimetype, byteSize],
+  )
+  return res.insertId
+}
+
+async function uploadById(id) {
+  const rows = await query(`SELECT ${UPLOAD_COLUMNS} FROM team_forum_uploads WHERE id = ? LIMIT 1`, [id])
+  return rows[0] || null
+}
+
+/** Bytes this account has uploaded in the trailing window — the §5.5.4 daily quota. */
+async function bytesUploadedSince(userId, sinceHours) {
+  const rows = await query(
+    `SELECT COALESCE(SUM(byte_size), 0) AS bytes FROM team_forum_uploads
+      WHERE uploader_user_id = ? AND created_at > (NOW() - INTERVAL ? HOUR)`,
+    [userId, sinceHours],
+  )
+  return Number(rows[0]?.bytes || 0)
+}
+
+/** The admin attribution view: who uploaded what, when, how much, and where. */
+async function listUploads({ limit = 100, offset = 0, includeDeleted = false } = {}) {
+  return query(
+    `SELECT u.id, u.team_id, u.post_id, u.uploader_user_id, u.uploader_username,
+            u.filename, u.mimetype, u.byte_size, u.created_at, u.deleted_at, u.deleted_by,
+            t.name AS team_name, t.slug AS team_slug
+       FROM team_forum_uploads u JOIN teams t ON t.id = u.team_id
+      ${includeDeleted ? '' : 'WHERE u.deleted_at IS NULL'}
+      ORDER BY u.created_at DESC, u.id DESC LIMIT ? OFFSET ?`,
+    [limit, offset],
+  )
+}
+
+async function softDeleteUpload(id, deletedBy) {
+  const res = await query(
+    'UPDATE team_forum_uploads SET deleted_at = NOW(), deleted_by = ? WHERE id = ? AND deleted_at IS NULL',
+    [deletedBy, id],
+  )
+  return res.affectedRows > 0
+}
+
+/** Soft-delete every upload attached to a post — the lifecycle half of §5.5.4. */
+async function softDeleteUploadsForPost(postId, deletedBy) {
+  await query(
+    'UPDATE team_forum_uploads SET deleted_at = NOW(), deleted_by = ? WHERE post_id = ? AND deleted_at IS NULL',
+    [deletedBy, postId],
+  )
+}
+
+/** Rows soft-deleted longer ago than the retention window — the sweep's worklist. */
+async function sweepableUploads(retentionDays) {
+  return query(
+    `SELECT id, filename FROM team_forum_uploads
+      WHERE deleted_at IS NOT NULL AND deleted_at < (NOW() - INTERVAL ? DAY)`,
+    [retentionDays],
+  )
+}
+
+/** Never-referenced uploads older than the grace period — a composer opened and abandoned. */
+async function orphanedUploads(graceHours) {
+  return query(
+    `SELECT id, filename FROM team_forum_uploads
+      WHERE post_id IS NULL AND deleted_at IS NULL AND created_at < (NOW() - INTERVAL ? HOUR)`,
+    [graceHours],
+  )
+}
+
+async function deleteUploadRows(ids) {
+  if (!ids.length) return 0
+  const res = await query(
+    `DELETE FROM team_forum_uploads WHERE id IN (${ids.map(() => '?').join(',')})`,
+    ids,
+  )
+  return res.affectedRows
+}
+
+
+module.exports = {
+  threadsByTeam,
+  threadById,
+  insertThread,
+  setThreadFlags,
+  postsByThread,
+  postById,
+  insertPost,
+  setPostStatus,
+  insertModeration,
+  moderationForTeam,
+  insertUpload,
+  uploadById,
+  bytesUploadedSince,
+  listUploads,
+  softDeleteUpload,
+  softDeleteUploadsForPost,
+  sweepableUploads,
+  orphanedUploads,
+  deleteUploadRows,
+}
diff --git a/server/src/model/teams/teamForum.model.js b/server/src/model/teams/teamForum.model.js
new file mode 100644
index 0000000..2f8316f
--- /dev/null
+++ b/server/src/model/teams/teamForum.model.js
@@ -0,0 +1,193 @@
+// ── The forum, phase 4 ("5a": access + announcements) ──────────────────────
+//
+// TEAMS.md §5.1's split is BY LAYER, not by feature: 5a ships the whole access
+// model and a single announcements stream per Team; 5b opens discussion threads,
+// replies and editing. The schema for all of it landed together, so 5b enables
+// paths here rather than migrating data — which is why `type` is a parameter
+// below and not a constant, and why `locked` is honoured on a thread nothing can
+// reply to yet.
+//
+// **Every function here takes an already-resolved access decision.** Nothing in
+// this file reads `team_members` or `team_forum_grants`; the caller asks
+// teamAccess.forumAccess() once and hands the answer down. That is §5.4's "never
+// by checking membership directly, which is how paths 1 and 3 would drift back
+// together", made structural.
+//
+// **The read path is where the image policy is applied**, once, in `renderPost`.
+// Not in the controller and never in the client: the client is TOLD the mode so it
+// can draw the right composer, and is never the thing that decides whether an
+// image appears (§5.5.6).
+
+const forumDb = require('./teamForum.db')
+const forumSettings = require('./teamForumSettings.model')
+const { cleanForumBody, renderForumBody } = require('../../utils/forumHtml')
+
+// Announcements are leader-authored and replies are disabled; 5b's discussion
+// threads are member-authored and take replies. Both types exist in the enum from
+// day one — this is the list of what 5a will CREATE.
+const CREATABLE_TYPES_5A = ['announcement']
+
+const DELETED_AUTHOR = '[deleted account]'
+
+/**
+ * Moderation actions, and what each one does to the row.
+ *
+ * A table rather than a switch because the ledger and the effect have to stay in
+ * step: every entry here writes one row of `team_forum_moderation` naming the
+ * authority that was exercised, and an action with an effect but no ledger entry
+ * would be a moderation nobody can audit.
+ */
+const THREAD_ACTIONS = {
+  pin: { pinned: true },
+  unpin: { pinned: false },
+  lock: { locked: true },
+  unlock: { locked: false },
+  hide: { status: 'hidden' },
+  unhide: { status: 'visible' },
+  delete: { status: 'deleted' },
+  restore: { status: 'visible' },
+}
+
+function publicThread(row) {
+  return {
+    id: row.id,
+    type: row.type,
+    title: row.title,
+    author: row.created_username || DELETED_AUTHOR,
+    authorDeleted: row.created_by == null,
+    createdAt: row.created_at,
+    lastPostAt: row.last_post_at,
+    postCount: row.post_count,
+    pinned: Boolean(row.pinned),
+    locked: Boolean(row.locked),
+    status: row.status,
+  }
+}
+
+/**
+ * One post, rendered for one image policy.
+ *
+ * `body` is what the reader gets and `mode` decides whether it carries images.
+ * The STORED html is never modified — flipping the policy changes this function's
+ * output and nothing on disk, which is the property §5.5.3 exists to give and the
+ * one acceptance criterion 3 measures.
+ */
+function renderPost(row, mode) {
+  return {
+    id: row.id,
+    author: row.author_username || DELETED_AUTHOR,
+    authorDeleted: row.author_user_id == null,
+    body: renderForumBody(row.body_html, mode),
+    createdAt: row.created_at,
+    editedAt: row.edited_at,
+    status: row.status,
+  }
+}
+
+/**
+ * The thread list for one viewer.
+ *
+ * `canModerate` widens what is returned, not just what is offered: a hidden
+ * thread is visible to the people who can unhide it and to nobody else, so the
+ * same call answers both audiences without a second endpoint that could disagree
+ * with this one.
+ */
+async function listThreads(teamId, { canModerate = false, limit = 50, offset = 0 } = {}) {
+  const rows = await forumDb.threadsByTeam(teamId, { includeHidden: canModerate, limit, offset })
+  return rows.map(publicThread)
+}
+
+/** One thread with its posts, rendered under the current image policy. */
+async function getThread(teamId, threadId, { canModerate = false } = {}) {
+  const thread = await forumDb.threadById(threadId)
+  // The team check is here rather than in the SQL so a thread id from another
+  // Team reads as "not found" and not as "found, but not yours" — a forum is a
+  // private room and the existence of a thread in it is itself private.
+  if (!thread || thread.team_id !== teamId) return null
+  if (thread.status === 'deleted' && !canModerate) return null
+  if (thread.status === 'hidden' && !canModerate) return null
+
+  const mode = await forumSettings.imageMode()
+  const posts = await forumDb.postsByThread(threadId, { includeHidden: canModerate })
+  return { ...publicThread(thread), posts: posts.map((p) => renderPost(p, mode)) }
+}
+
+/**
+ * Post an announcement: a thread and its first post, in one call.
+ *
+ * An announcement is a degenerate thread rather than its own thing (§5.1) — which
+ * is why this writes the ordinary tables and 5b adds no migration. `locked` is
+ * left false: replies are refused because the TYPE takes none, not because the
+ * thread was closed, and conflating the two would make "unlock" look like it
+ * would open replies on an announcement.
+ */
+async function createThread({ team, actor, type, title, body }) {
+  if (!CREATABLE_TYPES_5A.includes(type)) {
+    return { ok: false, status: 400, error: 'Only announcements can be posted yet' }
+  }
+  const cleaned = cleanForumBody(body)
+  if (!cleaned || !cleaned.replace(/<[^>]*>/g, '').trim()) {
+    return { ok: false, status: 400, error: 'An announcement needs a body' }
+  }
+  const threadId = await forumDb.insertThread({
+    teamId: team.id,
+    type,
+    title,
+    createdBy: actor.id,
+    createdUsername: actor.username,
+  })
+  await forumDb.insertPost({
+    threadId,
+    authorUserId: actor.id,
+    authorUsername: actor.username,
+    bodyHtml: cleaned,
+  })
+  return { ok: true, threadId }
+}
+
+/**
+ * Apply a moderation action to a thread, and record WHICH authority did it.
+ *
+ * `actorRole` is 'leader' or 'staff' — the column that makes a leader's ordinary
+ * housekeeping distinguishable from a staff intervention after the fact (§5.3).
+ * The caller resolves it; this function records it and never infers it, because
+ * an actor who is both would otherwise be recorded as whichever the code checked
+ * first.
+ */
+async function moderateThread({ team, threadId, action, actor, actorRole, reason }) {
+  const effect = THREAD_ACTIONS[action]
+  if (!effect) return { ok: false, status: 400, error: 'Unknown moderation action' }
+
+  const thread = await forumDb.threadById(threadId)
+  if (!thread || thread.team_id !== team.id) return { ok: false, status: 404, error: 'Thread not found' }
+
+  await forumDb.setThreadFlags(threadId, effect)
+  await forumDb.insertModeration({
+    teamId: team.id,
+    targetType: 'thread',
+    targetId: threadId,
+    action,
+    actorUserId: actor.id,
+    actorUsername: actor.username,
+    actorRole,
+    reason,
+  })
+  return { ok: true, action, threadId }
+}
+
+/** The ledger for the admin Team page. Staff-only by its route, not by this function. */
+async function moderationLedger(teamId, opts) {
+  return forumDb.moderationForTeam(teamId, opts)
+}
+
+module.exports = {
+  CREATABLE_TYPES_5A,
+  THREAD_ACTIONS,
+  listThreads,
+  getThread,
+  createThread,
+  moderateThread,
+  moderationLedger,
+  publicThread,
+  renderPost,
+}
diff --git a/server/src/model/teams/teamGrants.model.js b/server/src/model/teams/teamGrants.model.js
new file mode 100644
index 0000000..a1adf4b
--- /dev/null
+++ b/server/src/model/teams/teamGrants.model.js
@@ -0,0 +1,165 @@
+// ── The grant/revoke flow (TEAMS.md §2.5 path 3) ───────────────────────────
+//
+// The RESOLVER lives in teamAccess.model.js and answers "may this account use the
+// forum". This file is the WRITE half: who may hand that access out, to whom, and
+// what stops a leader turning a Team forum into open hosting on the operator's
+// site.
+//
+// **Two authorities, and they are not the same authority with different reach.**
+//
+//   staff  (admin | moderator) — any Team, no cap, may revoke anything
+//   leader (path 2, on THIS Team) — own Team, capped, may not revoke a staff grant
+//
+// The last clause is the one worth stating: a leader who could revoke a
+// staff-issued grant could undo a moderation decision, which is the whole reason
+// `granted_by` is retained rather than collapsed into a boolean.
+//
+// **Nothing here writes `team_members`, in either direction, ever.** A grant is
+// not a membership: it may name any Runic Gateway account, including one with no
+// linked game identity at all — that is the point of it, since letting an unlinked
+// guildmate into the forum must not be a staff ticket. `teams.model.js` keeps such
+// an account off the roster and out of every membership count, and path 4 keeps it
+// off external platforms.
+
+const accessDb = require('./teamAccess.db')
+const teamsDb = require('./teams.db')
+const access = require('./teamAccess.model')
+const usersDb = require('../users/users.db')
+const settingsDb = require('../settings/settings.db')
+
+// The per-Team ceiling on ACTIVE leader-issued grants. A leader admitting
+// unlimited arbitrary accounts to a private space on the operator's host is a
+// quiet way to turn a Team forum into free hosting; the cap is what makes it a
+// decision the operator made rather than one a leader made for them.
+const CAP_KEY = 'teams_max_grants_per_team'
+const DEFAULT_CAP = 50
+
+const STAFF_ROLES = ['admin', 'moderator']
+
+async function grantCap() {
+  const raw = await settingsDb.get(CAP_KEY)
+  const n = Number.parseInt(raw, 10)
+  return Number.isFinite(n) && n > 0 ? n : DEFAULT_CAP
+}
+
+const isStaff = (actor) => STAFF_ROLES.includes(actor?.role)
+
+/**
+ * What may this actor do with grants on this Team?
+ *
+ * Resolved once and returned whole, so the controller asks a question rather than
+ * assembling the answer from three booleans — the shape that lets a leader check
+ * and a staff check drift apart.
+ */
+async function authorityFor(teamId, actor) {
+  if (isStaff(actor)) return { may: true, as: 'staff' }
+  const leads = await access.isLeaderByUser(teamId, actor?.id)
+  return { may: leads, as: leads ? 'leader' : null }
+}
+
+/**
+ * Issue a grant. Returns the model result shape the Teams controllers translate:
+ * `{ ok }` or `{ ok: false, status, error }`.
+ *
+ * `warning` on a staff grant past the cap is deliberate and is not an error:
+ * staff are exempt, and silently exceeding a ceiling the operator configured is
+ * worth saying out loud on the way past.
+ */
+async function grant({ team, actor, userId, username, reason }) {
+  const authority = await authorityFor(team.id, actor)
+  if (!authority.may) return { ok: false, status: 403, error: 'Not a leader of this Team' }
+
+  const target = userId
+    ? await usersDb.findById(userId)
+    : await usersDb.findByUsername(username)
+  if (!target) return { ok: false, status: 404, error: 'No such account' }
+
+  const existing = await accessDb.activeGrant(team.id, target.id)
+  if (existing) return { ok: false, status: 409, error: 'That account already has an active grant' }
+
+  const cap = await grantCap()
+  const count = await accessDb.activeGrantCount(team.id)
+  let warning = null
+  if (count >= cap) {
+    if (authority.as === 'leader') {
+      return { ok: false, status: 409, error: `This Team has reached its limit of ${cap} forum guests` }
+    }
+    warning = `This Team is past the configured limit of ${cap} forum guests`
+  }
+
+  await accessDb.insertGrant({
+    teamId: team.id,
+    userId: target.id,
+    username: target.username,
+    grantedBy: actor.id,
+    grantedUsername: actor.username,
+    reason,
+  })
+  return { ok: true, as: authority.as, grantee: target.username, ...(warning ? { warning } : {}) }
+}
+
+/**
+ * Revoke a grant.
+ *
+ * The one asymmetry with `grant`: a leader may not revoke what staff issued.
+ * Checked against `granted_by`'s role AT REVOKE TIME rather than against a stored
+ * flag, so an account that has since lost its staff role stops protecting the
+ * grants it made — which is the behaviour an operator demoting someone expects.
+ */
+async function revoke({ team, actor, userId, reason }) {
+  const authority = await authorityFor(team.id, actor)
+  if (!authority.may) return { ok: false, status: 403, error: 'Not a leader of this Team' }
+
+  const existing = await accessDb.activeGrant(team.id, userId)
+  if (!existing) return { ok: false, status: 404, error: 'No active grant for that account' }
+
+  if (authority.as === 'leader' && existing.granted_by) {
+    const issuer = await usersDb.findById(existing.granted_by)
+    if (isStaff(issuer)) {
+      return { ok: false, status: 403, error: 'That access was granted by staff and only staff may revoke it' }
+    }
+  }
+
+  await accessDb.revokeGrant({
+    teamId: team.id,
+    userId,
+    revokedBy: actor.id,
+    revokedUsername: actor.username,
+    reason,
+  })
+  return { ok: true, as: authority.as, grantee: existing.username }
+}
+
+/**
+ * The Team's forum guests — active grants for accounts that are NOT members.
+ *
+ * The subtraction is the §3.2 "Forum guests" list: someone who is both a member
+ * and a grantee is a member, listed on the roster, and appears here not at all.
+ * Both facts stay true in the ledger; only the presentation picks one.
+ */
+async function forumGuests(teamId) {
+  const [grants, members] = await Promise.all([
+    accessDb.activeGrants(teamId),
+    teamsDb.membersByTeam(teamId, { includeDeparted: false }),
+  ])
+  const memberUserIds = new Set(members.map((m) => m.user_id).filter((id) => id != null))
+  return grants
+    .filter((g) => g.user_id == null || !memberUserIds.has(g.user_id))
+    .map((g) => ({
+      userId: g.user_id,
+      username: g.username,
+      grantedBy: g.granted_username,
+      grantedAt: g.granted_at,
+      reason: g.reason,
+    }))
+}
+
+module.exports = {
+  CAP_KEY,
+  DEFAULT_CAP,
+  grantCap,
+  authorityFor,
+  grant,
+  revoke,
+  forumGuests,
+}
diff --git a/server/src/router/v1/admin/teams.controller.js b/server/src/router/v1/admin/teams.controller.js
index 00627f1..f9799ba 100644
--- a/server/src/router/v1/admin/teams.controller.js
+++ b/server/src/router/v1/admin/teams.controller.js
@@ -12,6 +12,10 @@ const access = require('../../../model/teams/teamAccess.model')
 const teamSync = require('../../../model/teams/teamSync.model')
 const teamsDb = require('../../../model/teams/teams.db')
 const activity = require('../../../model/activity/activity.model')
+const forum = require('../../../model/teams/teamForum.model')
+const forumDb = require('../../../model/teams/teamForum.db')
+const forumUploadsModel = require('../../../model/teams/teamForumUploads.model')
+const forumSettings = require('../../../model/teams/teamForumSettings.model')
 
 const log = require('../../../utils/logger')('teams')
 
@@ -85,6 +89,65 @@ async function grants(req, res) {
   }
 }
 
+// ── Forum: the ledger and the upload attribution view (§5.4) ──────────────
+
+/**
+ * A Team's forum moderation ledger.
+ *
+ * Served whether or not the forum is switched on, unlike every /player forum
+ * route. The switch guards the forum as a FEATURE — what members can read and
+ * write — and an operator who turned it off to deal with a problem is precisely
+ * the operator who needs to see what was moderated (§5.5.1: no data is deleted).
+ */
+async function forumModeration(req, res) {
+  try {
+    const id = Number(req.params.id)
+    const team = await teamsDb.findById(id)
+    if (!team) return res.status(404).json({ message: 'Team not found' })
+    return res.json({ entries: await forum.moderationLedger(id, { limit: 200 }) })
+  } catch (err) {
+    return fail(res, err, 'forum moderation')
+  }
+}
+
+/**
+ * Who uploaded what, when, and how much — across every Team.
+ *
+ * This view is the reason §5.5.4 added an attribution table at all: the
+ * acknowledgement an operator gives before enabling uploads is meaningless if the
+ * question it makes them responsible for cannot be answered afterwards.
+ */
+async function forumUploads(req, res) {
+  try {
+    return res.json({
+      uploads: await forumDb.listUploads({
+        limit: Number(req.query.limit) || 100,
+        offset: Number(req.query.offset) || 0,
+        includeDeleted: req.query.deleted === '1',
+      }),
+      quota: {
+        dailyBytes: forumUploadsModel.DAILY_QUOTA_BYTES,
+        retentionDays: forumUploadsModel.RETENTION_DAYS,
+      },
+    })
+  } catch (err) {
+    return fail(res, err, 'forum uploads')
+  }
+}
+
+/** The forum settings' own state — the acknowledgement, which is not a public key. */
+async function forumSettingsState(req, res) {
+  try {
+    return res.json({
+      enabled: await forumSettings.forumsEnabled(),
+      imageMode: await forumSettings.imageMode(),
+      acknowledgement: await forumSettings.ackState(),
+    })
+  } catch (err) {
+    return fail(res, err, 'forum settings')
+  }
+}
+
 // ── Leadership overrides (§2.5.1) — NOT gated ─────────────────────────────
 
 async function setLeaderOverride(req, res) {
@@ -195,6 +258,9 @@ async function decideRequest(req, res) {
 }
 
 module.exports = {
+  forumModeration,
+  forumUploads,
+  forumSettingsState,
   listTeams,
   getTeam,
   resync,
diff --git a/server/src/router/v1/admin/teams.router.js b/server/src/router/v1/admin/teams.router.js
index 33d2715..dde13af 100644
--- a/server/src/router/v1/admin/teams.router.js
+++ b/server/src/router/v1/admin/teams.router.js
@@ -92,6 +92,37 @@ teamsRouter.post(
 
 // ── :id paths ──────────────────────────────────────────────────────────────
 
+// Both literal, and both under '/forum' rather than '/:id/forum', so they cannot
+// be captured by the '/:id' lookup below — 'forum' is not an integer, but relying
+// on the validator to reject it would mean the route table's meaning depended on
+// a param check three lines further down.
+teamsRouter.get(
+  '/forum/uploads',
+  // #swagger.tags = ['Admin · Teams']
+  // #swagger.summary = 'Upload attribution across every Team forum'
+  // #swagger.description = 'Who uploaded what, when and how much. This view is why an attribution table exists at all: the liability an operator accepts before enabling uploads is meaningless if "who uploaded this" cannot be answered afterwards. Deleted rows are excluded unless `deleted=1` — a soft-deleted upload still has bytes on disk until the sweep runs.'
+  // #swagger.parameters['limit'] = { in: 'query', required: false, schema: { type: 'integer' }, description: 'Page size (default 100).' }
+  // #swagger.parameters['offset'] = { in: 'query', required: false, schema: { type: 'integer' }, description: 'Rows to skip (default 0).' }
+  // #swagger.parameters['deleted'] = { in: 'query', required: false, schema: { type: 'string', enum: ['0','1'] }, description: 'Include soft-deleted uploads.' }
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Uploads with their attribution', content: { "application/json": { schema: { $ref: "#/components/schemas/TeamForumUploadList" } } } } */
+  query('limit').optional().isInt({ min: 1, max: 500 }).toInt(),
+  query('offset').optional().isInt({ min: 0 }).toInt(),
+  query('deleted').optional().isIn(['0', '1']),
+  validate,
+  ctrl.forumUploads,
+)
+
+teamsRouter.get(
+  '/forum/settings',
+  // #swagger.tags = ['Admin · Teams']
+  // #swagger.summary = 'The forum switch, the image policy, and the acknowledgement’s state'
+  // #swagger.description = 'The two settings themselves ride the ordinary admin settings endpoint and are published to every client; this route adds the one thing that is NOT public — whether the uploads acknowledgement has been given, by whom, and whether the notice has been reworded since. A stale acknowledgement does not disable uploads: it raises a banner and freezes every other forum setting until it is re-given.'
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Forum settings state', content: { "application/json": { schema: { $ref: "#/components/schemas/TeamForumSettingsState" } } } } */
+  ctrl.forumSettingsState,
+)
+
 teamsRouter.get(
   '/:id',
   // #swagger.tags = ['Admin · Teams']
@@ -119,6 +150,20 @@ teamsRouter.get(
   ctrl.grants,
 )
 
+teamsRouter.get(
+  '/:id/forum/moderation',
+  // #swagger.tags = ['Admin · Teams']
+  // #swagger.summary = 'A Team’s forum moderation ledger'
+  // #swagger.description = 'Append-only, and deliberately separate from the site’s mod_actions/appeals pair (§5.3): that one is Discord-sanction-shaped and bot-owned, and routing a guild leader locking a thread through it would make ordinary housekeeping an appealable sanction. `actorRole` records which authority was exercised — a leader’s action appears only here, a staffer’s appears here AND in activity_log. Answers whether or not the forum is switched on.'
+  // #swagger.parameters['id'] = { in: 'path', required: true, schema: { type: 'integer' }, description: 'The Team id.' }
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'The ledger, newest first', content: { "application/json": { schema: { $ref: "#/components/schemas/TeamForumModerationLedger" } } } } */
+  /* #swagger.responses[404] = { description: 'No such Team', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  param('id').isInt({ min: 1 }).toInt(),
+  validate,
+  ctrl.forumModeration,
+)
+
 teamsRouter.post(
   '/:id/archive',
   // #swagger.tags = ['Admin · Teams']
diff --git a/server/src/router/v1/player/index.js b/server/src/router/v1/player/index.js
index ffe8298..ce972f4 100644
--- a/server/src/router/v1/player/index.js
+++ b/server/src/router/v1/player/index.js
@@ -27,6 +27,7 @@ const noindex = require('../../../middleware/noindex')
 const accountRouter = require('./account.router')
 const appealsRouter = require('./appeals.router')
 const teamsRouter = require('./teams.router')
+const teamForumRouter = require('./teamForum.router')
 
 const playerRouter = express.Router()
 
@@ -41,5 +42,9 @@ playerRouter.use(noindex, requireAuth)
 playerRouter.use('/account', accountRouter)
 playerRouter.use('/appeals', appealsRouter)
 playerRouter.use('/teams', teamsRouter)
+// Same prefix, second router. The forum and the leader-exercised grant flow are a
+// different capability from "the caller's own Teams", and splitting them keeps
+// each file about one thing; no path in the two collides.
+playerRouter.use('/teams', teamForumRouter)
 
 module.exports = playerRouter
diff --git a/server/src/router/v1/player/teamForum.controller.js b/server/src/router/v1/player/teamForum.controller.js
new file mode 100644
index 0000000..d480f2a
--- /dev/null
+++ b/server/src/router/v1/player/teamForum.controller.js
@@ -0,0 +1,288 @@
+// Player · Team forums — the participant surface (TEAMS.md §5.4).
+//
+// Under `/player` rather than `/admin` for the reason §2.11 gives: a forum
+// participant may be a plain player, a LEADER is a player, and the `/admin` tier
+// gate is `requireRole('admin','editor','moderator')` — putting a leader endpoint
+// behind it would mean widening that gate. The leader check is a per-handler
+// question on top of the tier's `requireAuth`.
+//
+// **Two guards run before anything else in this file, in this order:**
+//
+//   1. `teams_forums_enabled` — off means every route here answers 404, not 403.
+//      A 403 says "this exists and you may not have it", which advertises a
+//      feature the operator deliberately turned off; 404 says "not a thing on
+//      this site", which is the true statement (§5.5.1).
+//   2. the §2.5 access resolver — and never a membership check. Both a member and
+//      a granted non-member reach the forum, and asking `team_members` directly
+//      here is precisely how paths 1 and 3 drift back together.
+//
+// Both live in `resolveForum` below so a handler cannot forget either.
+
+const teamsDb = require('../../../model/teams/teams.db')
+const access = require('../../../model/teams/teamAccess.model')
+const grants = require('../../../model/teams/teamGrants.model')
+const forum = require('../../../model/teams/teamForum.model')
+const forumSettings = require('../../../model/teams/teamForumSettings.model')
+const uploads = require('../../../model/teams/teamForumUploads.model')
+const activity = require('../../../model/activity/activity.model')
+
+const log = require('../../../utils/logger')('teams')
+
+const STAFF_ROLES = ['admin', 'moderator']
+const isStaff = (user) => STAFF_ROLES.includes(user?.role)
+
+const fail = (res, err, what) => {
+  log.error(`player team forum: ${what} failed`, { message: err.message })
+  return res.status(500).json({ message: 'Internal Server Error' })
+}
+
+const send = (res, result, body = { ok: true }) =>
+  (result.ok ? res.json({ ...body, ...result }) : res.status(result.status || 400).json({ message: result.error }))
+
+/**
+ * The two guards, plus the Team, plus what this caller may do in it.
+ *
+ * Returns null when the caller should see a 404 — which covers three different
+ * situations on purpose: the forum is switched off, the Team does not exist, and
+ * the caller has no access to it. A private room's contents and its existence are
+ * the same secret.
+ */
+async function resolveForum(req) {
+  if (!(await forumSettings.forumsEnabled())) return null
+  const team = await teamsDb.findBySlug(req.params.slug)
+  if (!team) return null
+
+  const resolved = await access.forumAccess(team.id, req.user.id)
+  const staff = isStaff(req.user)
+  if (!resolved.allowed && !staff) return null
+
+  return {
+    team,
+    access: resolved,
+    // Staff moderate anywhere; a leader moderates their own Team. `actorRole`
+    // records WHICH of the two was exercised, and leadership wins when both are
+    // true: a leader who is also a moderator acting on their own Team is doing
+    // ordinary housekeeping, and logging it as a staff intervention would put a
+    // guild's day-to-day tidying into the site's staff-accountability trail.
+    canModerate: resolved.isLeader || staff,
+    actorRole: resolved.isLeader ? 'leader' : 'staff',
+  }
+}
+
+// ── threads ────────────────────────────────────────────────────────────────
+
+async function listThreads(req, res) {
+  try {
+    const ctx = await resolveForum(req)
+    if (!ctx) return res.status(404).json({ message: 'Not found' })
+    return res.json({
+      threads: await forum.listThreads(ctx.team.id, { canModerate: ctx.canModerate }),
+      canPost: ctx.canModerate,
+      canModerate: ctx.canModerate,
+      imageMode: await forumSettings.imageMode(),
+    })
+  } catch (err) {
+    return fail(res, err, 'list threads')
+  }
+}
+
+async function getThread(req, res) {
+  try {
+    const ctx = await resolveForum(req)
+    if (!ctx) return res.status(404).json({ message: 'Not found' })
+    const thread = await forum.getThread(ctx.team.id, Number(req.params.id), { canModerate: ctx.canModerate })
+    if (!thread) return res.status(404).json({ message: 'Not found' })
+    return res.json({ ...thread, canModerate: ctx.canModerate })
+  } catch (err) {
+    return fail(res, err, 'get thread')
+  }
+}
+
+/**
+ * Post an announcement. 5a: leaders (and staff) only, replies disabled.
+ *
+ * The `canModerate` gate is doing double duty here and that is deliberate for one
+ * phase only: in 5a the only creatable type is an announcement, whose author must
+ * be a leader. 5b adds `type: 'discussion'`, which any member may create — at
+ * which point the check splits by type rather than being widened.
+ */
+async function createThread(req, res) {
+  try {
+    const ctx = await resolveForum(req)
+    if (!ctx) return res.status(404).json({ message: 'Not found' })
+    if (!ctx.canModerate) return res.status(403).json({ message: 'Only Team leaders may post announcements' })
+
+    const result = await forum.createThread({
+      team: ctx.team,
+      actor: req.user,
+      type: req.body.type || 'announcement',
+      title: req.body.title,
+      body: req.body.body,
+    })
+    return send(res, result)
+  } catch (err) {
+    return fail(res, err, 'create thread')
+  }
+}
+
+/**
+ * Pin / lock / hide / delete a thread, and its opposites.
+ *
+ * A staff-exercised action ALSO writes `activity_log`; a leader-exercised one
+ * writes only the forum ledger (§5.3). That asymmetry is the whole reason the two
+ * ledgers are cross-referenced rather than merged: routing a guild leader locking
+ * a thread into the site's sanction pipeline would make ordinary housekeeping an
+ * appealable staff action.
+ */
+async function moderateThread(req, res) {
+  try {
+    const ctx = await resolveForum(req)
+    if (!ctx) return res.status(404).json({ message: 'Not found' })
+    if (!ctx.canModerate) return res.status(403).json({ message: 'Not a leader of this Team' })
+
+    const result = await forum.moderateThread({
+      team: ctx.team,
+      threadId: Number(req.params.id),
+      action: req.body.action,
+      actor: req.user,
+      actorRole: ctx.actorRole,
+      reason: req.body.reason,
+    })
+    if (result.ok && ctx.actorRole === 'staff') {
+      await activity.log({
+        req,
+        action: 'team.forum.moderate',
+        detail: `${req.user.username} (#${req.user.id}) ${req.body.action} thread #${req.params.id} `
+          + `on team "${ctx.team.name}" (#${ctx.team.id})`
+          + `${req.body.reason ? `: "${req.body.reason}"` : ''}`,
+      })
+    }
+    return send(res, result)
+  } catch (err) {
+    return fail(res, err, 'moderate thread')
+  }
+}
+
+// ── grants (§2.5 path 3, leader-exercised) ─────────────────────────────────
+
+/**
+ * The grant surface is reachable whether or not the FORUM is on.
+ *
+ * Not an oversight: §5.5.1 says a toggle-off revokes no grant and that the rows
+ * stay authoritative, so a leader must still be able to see and manage them —
+ * they simply have nothing to grant access to for the moment. What the switch
+ * guards is the forum's CONTENT, not its access list.
+ */
+async function listGrants(req, res) {
+  try {
+    const team = await teamsDb.findBySlug(req.params.slug)
+    if (!team) return res.status(404).json({ message: 'Team not found' })
+    const authority = await grants.authorityFor(team.id, req.user)
+    if (!authority.may) return res.status(403).json({ message: 'Not a leader of this Team' })
+    return res.json({
+      guests: await grants.forumGuests(team.id),
+      cap: await grants.grantCap(),
+      as: authority.as,
+    })
+  } catch (err) {
+    return fail(res, err, 'list grants')
+  }
+}
+
+async function createGrant(req, res) {
+  try {
+    const team = await teamsDb.findBySlug(req.params.slug)
+    if (!team) return res.status(404).json({ message: 'Team not found' })
+    const result = await grants.grant({
+      team,
+      actor: req.user,
+      userId: req.body.userId,
+      username: req.body.username,
+      reason: req.body.reason,
+    })
+    if (result.ok && result.as === 'staff') {
+      await activity.log({
+        req,
+        action: 'team.forum.grant',
+        detail: `${req.user.username} (#${req.user.id}) granted forum access to ${result.grantee} `
+          + `on team "${team.name}" (#${team.id})`,
+      })
+    }
+    return send(res, result)
+  } catch (err) {
+    return fail(res, err, 'create grant')
+  }
+}
+
+async function revokeGrant(req, res) {
+  try {
+    const team = await teamsDb.findBySlug(req.params.slug)
+    if (!team) return res.status(404).json({ message: 'Team not found' })
+    const result = await grants.revoke({
+      team,
+      actor: req.user,
+      userId: Number(req.params.userId),
+      reason: req.body.reason,
+    })
+    if (result.ok && result.as === 'staff') {
+      await activity.log({
+        req,
+        action: 'team.forum.revoke',
+        detail: `${req.user.username} (#${req.user.id}) revoked forum access from ${result.grantee} `
+          + `on team "${team.name}" (#${team.id})`,
+      })
+    }
+    return send(res, result)
+  } catch (err) {
+    return fail(res, err, 'revoke grant')
+  }
+}
+
+// ── uploads (§5.5.4) ───────────────────────────────────────────────────────
+
+/**
+ * The same 404 guard, applied at a second level: these routes answer 404 in any
+ * image mode but `uploads`, for the same reason the forum's do when the switch is
+ * off. An upload control the client offers and the server refuses is worse than
+ * no control, which is why the mode is published (§5.5.6) — but the SERVER is
+ * still what enforces it.
+ */
+async function createUpload(req, res) {
+  try {
+    if (!(await forumSettings.uploadsEnabled())) return res.status(404).json({ message: 'Not found' })
+    const ctx = await resolveForum(req)
+    if (!ctx) return res.status(404).json({ message: 'Not found' })
+    if (!req.file) return res.status(400).json({ message: 'No file uploaded' })
+
+    return send(res, await uploads.accept({ team: ctx.team, actor: req.user, file: req.file }))
+  } catch (err) {
+    return fail(res, err, 'upload')
+  }
+}
+
+async function deleteUpload(req, res) {
+  try {
+    if (!(await forumSettings.uploadsEnabled())) return res.status(404).json({ message: 'Not found' })
+    const ctx = await resolveForum(req)
+    if (!ctx) return res.status(404).json({ message: 'Not found' })
+    return send(res, await uploads.remove({
+      id: Number(req.params.id),
+      actor: req.user,
+      isStaff: isStaff(req.user),
+    }))
+  } catch (err) {
+    return fail(res, err, 'delete upload')
+  }
+}
+
+module.exports = {
+  listThreads,
+  getThread,
+  createThread,
+  moderateThread,
+  listGrants,
+  createGrant,
+  revokeGrant,
+  createUpload,
+  deleteUpload,
+}
diff --git a/server/src/router/v1/player/teamForum.router.js b/server/src/router/v1/player/teamForum.router.js
new file mode 100644
index 0000000..19aecd7
--- /dev/null
+++ b/server/src/router/v1/player/teamForum.router.js
@@ -0,0 +1,198 @@
+// Player · Team forums (TEAMS.md §5.4) and the leader-exercised grant flow (§2.11).
+//
+// Mounted at /api/v1/player/teams by player/index.js — the SAME prefix as
+// teams.router.js, which is why this file exists separately rather than being
+// merged into it: that router is the caller's own Team reads, this one is the
+// forum and the grants. Express walks both in mount order and no path collides
+// ('/:slug/access' vs '/:slug/forum/*' and '/:slug/grants').
+//
+// Every forum route here 404s while `teams_forums_enabled` is off, and the upload
+// routes 404 in any image mode but `uploads`. Both guards are in the controller
+// rather than in middleware here, because both need the resolved Team and the
+// caller's access to decide, and a guard that answers before those are known
+// would have to answer 403 — which is the thing §5.5.1 says not to say.
+
+const express = require('express')
+const { body, param } = require('express-validator')
+
+const ctrl = require('./teamForum.controller')
+const validate = require('../../../middleware/validate')
+const { makeLimiter } = require('../../../middleware/rateLimit')
+const { upload } = require('../admin/imageUpload')
+
+const forumRouter = express.Router()
+
+// Writes are rate-limited, reads are not. The caps are per IP and generous enough
+// that a Team having a busy afternoon never meets them; what they stop is a script.
+const postLimiter = makeLimiter({
+  windowMs: 10 * 60 * 1000,
+  max: 20,
+  label: 'team-forum-post',
+  message: 'Too many forum posts. Please slow down.',
+})
+
+// Tighter than posting, and for a different reason: §2.5 caps how many active
+// grants a Team may hold, and this caps how fast a leader may approach that cap.
+const grantLimiter = makeLimiter({
+  windowMs: 10 * 60 * 1000,
+  max: 15,
+  label: 'team-forum-grant',
+  message: 'Too many grant changes. Please slow down.',
+})
+
+// Bytes, not requests: the per-account daily quota lives in the uploads model,
+// and this is the per-IP flood guard in front of it.
+const uploadLimiter = makeLimiter({
+  windowMs: 10 * 60 * 1000,
+  max: 30,
+  label: 'team-forum-upload',
+  message: 'Too many uploads. Please slow down.',
+})
+
+forumRouter.get(
+  '/:slug/forum/threads',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'List a Team forum’s threads'
+  // #swagger.description = 'Reachable by a member (path 1) OR a granted account (path 3) — a forum guest with no linked game identity reads exactly as a member does. Answers 404 while `teams_forums_enabled` is off, and 404 (never 403) to a caller with no access: in a private room, the contents and the existence are the same secret. Hidden threads are included for a leader or staff and for nobody else.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'The thread list, with what this caller may do', content: { "application/json": { schema: { $ref: "#/components/schemas/TeamForumThreadList" } } } } */
+  /* #swagger.responses[404] = { description: 'Forum off, no such Team, or no access', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  ctrl.listThreads,
+)
+
+forumRouter.post(
+  '/:slug/forum/threads',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'Post an announcement'
+  // #swagger.description = 'Phase 4 ships a single announcements stream per Team: leader-authored, replies disabled. An announcement is a degenerate thread rather than its own kind of object, so phase 5’s discussion threads add no migration. The body is sanitised with the FORUM’s own profile, in which `img` is never allowed — an author writes a URL and core decides at render time whether it becomes a picture.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  /* #swagger.requestBody = { required: true, content: { "application/json": { schema: { type: 'object', required: ['title','body'], properties: { type: { type: 'string', enum: ['announcement'] }, title: { type: 'string', maxLength: 200 }, body: { type: 'string' } } } } } } */
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Posted', content: { "application/json": { schema: { type: 'object', properties: { ok: { type: 'boolean' }, threadId: { type: 'integer' } } } } } } */
+  /* #swagger.responses[403] = { description: 'Not a leader of this Team', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  postLimiter,
+  param('slug').isString().trim().isLength({ min: 1, max: 191 }),
+  body('type').optional().isIn(['announcement']),
+  body('title').isString().trim().isLength({ min: 1, max: 200 }),
+  body('body').isString().isLength({ min: 1, max: 40000 }),
+  validate,
+  ctrl.createThread,
+)
+
+forumRouter.get(
+  '/:slug/forum/threads/:id',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'Read one thread and its posts'
+  // #swagger.description = 'Post bodies are rendered under the CURRENT image policy: `disabled` serves the stored HTML unchanged, `remote` and `uploads` add a core-generated <img> beneath each link that names an image. The stored HTML is identical in all three — flipping the policy back to disabled un-renders every image on every existing post with no data migration.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  // #swagger.parameters['id'] = { in: 'path', required: true, schema: { type: 'integer' }, description: 'The thread id.' }
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'The thread', content: { "application/json": { schema: { $ref: "#/components/schemas/TeamForumThread" } } } } */
+  /* #swagger.responses[404] = { description: 'Forum off, no such thread, or no access', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  param('id').isInt({ min: 1 }).toInt(),
+  validate,
+  ctrl.getThread,
+)
+
+forumRouter.post(
+  '/:slug/forum/threads/:id/moderate',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'Pin, lock, hide or delete a thread'
+  // #swagger.description = 'Leader or staff. Every action writes the Team’s own append-only moderation ledger recording WHICH authority was exercised; a staff-exercised one additionally writes activity_log, so the site’s staff-accountability trail sees it while a leader’s ordinary housekeeping stays out of it. Deliberately not routed through the site’s mod_actions/appeals pair, which is Discord-sanction-shaped.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  // #swagger.parameters['id'] = { in: 'path', required: true, schema: { type: 'integer' }, description: 'The thread id.' }
+  /* #swagger.requestBody = { required: true, content: { "application/json": { schema: { type: 'object', required: ['action'], properties: { action: { type: 'string', enum: ['pin','unpin','lock','unlock','hide','unhide','delete','restore'] }, reason: { type: 'string', maxLength: 255 } } } } } } */
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Applied', content: { "application/json": { schema: { type: 'object', properties: { ok: { type: 'boolean' }, action: { type: 'string' }, threadId: { type: 'integer' } } } } } } */
+  /* #swagger.responses[403] = { description: 'Not a leader of this Team', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  param('id').isInt({ min: 1 }).toInt(),
+  body('action').isIn(['pin', 'unpin', 'lock', 'unlock', 'hide', 'unhide', 'delete', 'restore']),
+  body('reason').optional().isString().trim().isLength({ max: 255 }),
+  validate,
+  ctrl.moderateThread,
+)
+
+// ── grants ─────────────────────────────────────────────────────────────────
+
+forumRouter.get(
+  '/:slug/grants',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'The Team’s forum guests, and the per-Team cap'
+  // #swagger.description = 'Leader or staff. Lists ACTIVE grants for accounts that are not members — someone who is both is a member, appears on the roster, and is absent here. Answers regardless of whether the forum is switched on: a toggle-off revokes no grant, so the access list stays manageable while there is temporarily nothing to grant access to.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Forum guests', content: { "application/json": { schema: { $ref: "#/components/schemas/TeamForumGuestList" } } } } */
+  /* #swagger.responses[403] = { description: 'Not a leader of this Team', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  ctrl.listGrants,
+)
+
+forumRouter.post(
+  '/:slug/grants',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'Grant forum access to an account'
+  // #swagger.description = 'A grant may name ANY Runic Gateway account, including one with no linked game identity — that is the point of it, since letting an unlinked guildmate into the forum must not be a staff ticket. It never writes team_members: the grantee stays off the roster, out of every membership count, and ineligible for external-platform access. A leader is capped at `teams_max_grants_per_team` active grants (default 50) and rate-limited; staff are exempt and are warned on the way past.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  /* #swagger.requestBody = { required: true, content: { "application/json": { schema: { type: 'object', properties: { userId: { type: 'integer' }, username: { type: 'string' }, reason: { type: 'string', maxLength: 255 } } } } } } */
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Granted', content: { "application/json": { schema: { type: 'object', properties: { ok: { type: 'boolean' }, grantee: { type: 'string' }, warning: { type: 'string' } } } } } } */
+  /* #swagger.responses[409] = { description: 'Already granted, or the Team is at its cap', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  grantLimiter,
+  body('userId').optional().isInt({ min: 1 }).toInt(),
+  body('username').optional().isString().trim().isLength({ min: 1, max: 32 }),
+  body('reason').optional().isString().trim().isLength({ max: 255 }),
+  validate,
+  ctrl.createGrant,
+)
+
+forumRouter.delete(
+  '/:slug/grants/:userId',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'Revoke forum access'
+  // #swagger.description = 'The grant row is updated rather than deleted — the table is the audit ledger as well as the current state. A leader may not revoke a STAFF-issued grant, which is what stops a leader undoing a moderation decision; the issuer’s role is checked at revoke time, so an account that has since lost its staff role stops protecting the grants it made.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  // #swagger.parameters['userId'] = { in: 'path', required: true, schema: { type: 'integer' }, description: 'The grantee’s account id.' }
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Revoked', content: { "application/json": { schema: { type: 'object', properties: { ok: { type: 'boolean' }, grantee: { type: 'string' } } } } } } */
+  /* #swagger.responses[403] = { description: 'Not a leader, or the grant was staff-issued', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  grantLimiter,
+  param('userId').isInt({ min: 1 }).toInt(),
+  body('reason').optional().isString().trim().isLength({ max: 255 }),
+  validate,
+  ctrl.revokeGrant,
+)
+
+// ── uploads ────────────────────────────────────────────────────────────────
+
+forumRouter.post(
+  '/:slug/forum/uploads',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'Upload an image to a Team forum'
+  // #swagger.description = 'Multipart. Answers 404 in any image mode but `uploads`. Beyond the admin upload path’s 8 MB cap, mimetype allowlist and random filename, this one assumes a hostile uploader: the leading bytes are sniffed and a mismatch with the declared type is rejected (a client’s Content-Type header is a claim, not a fact), a rolling per-account byte quota applies, and every accepted file gets an attribution row naming who uploaded it.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  /* #swagger.requestBody = { required: true, content: { "multipart/form-data": { schema: { type: 'object', properties: { image: { type: 'string', format: 'binary' } } } } } } */
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Stored', content: { "application/json": { schema: { type: 'object', properties: { ok: { type: 'boolean' }, id: { type: 'integer' }, url: { type: 'string' }, bytes: { type: 'integer' } } } } } } */
+  /* #swagger.responses[400] = { description: 'Not the image type it claims to be', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  /* #swagger.responses[429] = { description: 'Daily upload quota reached', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  uploadLimiter,
+  upload.single('image'),
+  ctrl.createUpload,
+)
+
+forumRouter.delete(
+  '/:slug/forum/uploads/:id',
+  // #swagger.tags = ['Player · Teams']
+  // #swagger.summary = 'Remove an uploaded image'
+  // #swagger.description = 'The uploader or staff. Soft: the row is marked and the bytes go with the nightly sweep after a retention window, so a mis-click is recoverable. Note that disabling uploads later stops new files being accepted and does not remove files already uploaded — that is what this route is for.'
+  // #swagger.parameters['slug'] = { in: 'path', required: true, schema: { type: 'string' }, description: 'The Team slug.' }
+  // #swagger.parameters['id'] = { in: 'path', required: true, schema: { type: 'integer' }, description: 'The upload id.' }
+  // #swagger.security = [{ "cookieAuth": [] }, { "bearerAuth": [] }]
+  /* #swagger.responses[200] = { description: 'Removed', content: { "application/json": { schema: { type: 'object', properties: { ok: { type: 'boolean' } } } } } } */
+  /* #swagger.responses[403] = { description: 'Not your upload', content: { "application/json": { schema: { $ref: "#/components/schemas/Error" } } } } */
+  param('id').isInt({ min: 1 }).toInt(),
+  validate,
+  ctrl.deleteUpload,
+)
+
+module.exports = forumRouter