Milestone 0: import zappier billing, Verae middleware, and Zapier research

Compose-ready workspace: packages/zappier (rate card, portal, Stripe),
packages/verae-zapier-middleware (timestamp + NATS), packages/verae-zapier
(CLI app), vendor/zapier-platform, and research/zapier vendor corpus.

Gate 0 structure checks pass. Product code and research are not yet wired.

packages/verae-zapier-middleware/.env.example

@@ -0,0 +1,30 @@
+# HTTP
+PORT=3100
+HOST=0.0.0.0
+
+# Upstream Verae
+VERAE_API_BASE_URL=https://api.veraetime.net
+MOCK_VERAE=false
+
+# NATS (Phase 7+)
+NATS_ENABLED=false
+NATS_URL=nats://127.0.0.1:4222
+
+# Security
+TOKEN_SECRET=change-me-in-production
+ADMIN_SECRET=change-me-admin
+
+# Job polling
+JOB_POLL_INTERVAL_MS=2000
+JOB_POLL_MAX_ATTEMPTS=60
+
+# Store
+STORE_PATH=./data/store.json
+
+# Billing UX
+UPGRADE_URL=https://veraetime.net/billing
+
+# Runtime debug (see docs/developer/debugging.md)
+# DEBUG_VERAE=auth,nats,jobs,webhooks,http,billing
+# DEBUG_VERAE_LEVEL=debug
+# DEBUG_VERAE_FILE=/tmp/verae-zapier-debug.log