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/v18.0.5.md

@@ -0,0 +1,33 @@
+> ## 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 v18.0.5
+
+> A security fix on the CLI.
+
+*Released: 2025-12-10*
+
+<Info>
+  We're releasing v18.0.5, skipping comprimised versions v18.0.2, v18.0.3, and
+  v18.0.4, due to the prior [security
+  incident](/integrations/news/2025/npm-package-sec-inc).
+</Info>
+
+This release fixes a potential security vulnerability in the `build` command related to zip file decompression.
+
+## cli
+
+* 🐛 Remove problematic decompress-tar dependency ([#1202](https://github.com/zapier/zapier-platform/pull/1202))
+
+## core
+
+None!
+
+## schema
+
+None!
+
+## misc
+
+* 🔨 Switch to pnpm as package manager and task runner ([#1204](https://github.com/zapier/zapier-platform/pull/1204))