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.

research/zapier/raw/docs/integrations/news/2025/v17.0.2.md

@@ -0,0 +1,22 @@
+> ## Documentation Index
+> Fetch the complete documentation index at: https://docs.zapier.com/llms.txt
+> Use this file to discover all available pages before exploring further.
+
+# What's changed in v17.0.2
+
+> Windows and ESM bugs.
+
+*Released: 2025-05-19*
+
+## cli
+
+* 🐛 Fix crashing issues on Windows ([#1024](https://github.com/zapier/zapier-platform/pull/1024))
+* 💅 Default to ESM for `zapier init` if template supports it ([#1026](https://github.com/zapier/zapier-platform/pull/1026))
+
+## core
+
+* 🐛 ESM apps can't import `define` helpers from `zapier-platform-core` ([#1018](https://github.com/zapier/zapier-platform/pull/1018))
+
+## schema
+
+None!