Initial import of verae-middleware from zapier monorepo

SUMMARY.md

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+# verae-middleware (HTTP edge)
+
+**Job:** Public `/zapier/v1/*`. Auth, entitlements, timestamp/wait, hash lookup, objects, receipts. Publishes NATS jobs; waits on events.
+
+**Expects HTTPS from:** zappier-edge (or Zapier if pointed here).
+
+**Sends:**
+- HTTPS to verae-chain-client (`/api/timestamp`, `/api/status`, `/api/verify`)
+- `verae.zapier.jobs.watch` after create
+- waits `verae.zapier.jobs.events`
+- splitter + aggregator when attachments / `includeAttached`
+
+**Returns to requestor:** 202 `{ jobId }` or wait JSON (completed / pending+jobId).
+
+**NATS:** never exposed to Zapier.