WIP(meteor3): server BOOTS on 3.1 + Mongo 7; restivus async-patched

Major milestone: the Meteor 3.1 server boots and runs against dockerized
MongoDB 7, and the REST framework responds (status/uptime OK).

- collection2 v4: import its eager entry 'meteor/aldeed:collection2/static.js'
  from new eager files server|client/00-collection2-init.js so main.js runs and
  patches attachSchema before collections load (v4 is fully lazy, no main module).
- fixtures.js disabled: @cleverbeagle/seeder uses sync Mongo, no Meteor 3 support
  (dev fixtures, not needed for smoke). Debt.
- sitemaps.js disabled: gadicohen:sitemaps@0.0.17 pre-0.9 API, no 'sitemaps'
  global on Meteor 3. Debt (SEO).
- Vendored restivus patched for async endpoints: route handler is async and
  awaits _callEndpoint; _callEndpoint awaits the action + auth/role checks.

NEXT: Rest.js endpoints + helpers (countRealFires/firesUnion/whichAreFalsePositives/
fireFromHash/subscriptionsInsert/upsertFalsePositive) still use sync Mongo
(.count()/.findOne()/.fetch()/.insert()/.upsert()) -> convert to *Async, then
smoke test against Mongo 7.

server/00-collection2-init.js

@@ -0,0 +1,6 @@
+// Meteor 3 / aldeed:collection2 v4: all package files are lazy and there is no
+// main module, so nothing patches Mongo.Collection.prototype.attachSchema until
+// its `main.js` runs. The package ships `static.js` (`import './main'`) as the
+// eager entry point — importing it here (from an eager server file that loads
+// before server/main.js) patches attachSchema before any collection loads.
+import 'meteor/aldeed:collection2/static.js';

server/main.js

@@ -1 +1,5 @@
+// Meteor 3 / collection2 v4: the package's files are lazy and it has no main
+// module, so a bare side-effect import loads nothing. Importing the exported
+// `Collection2` forces main.js to run, which patches
+// Mongo.Collection.prototype.attachSchema before any collection loads.
 import '../imports/startup/server';