Milestone 2: module/model docs (MD, Sphinx RST, PDF) and work log

74 source modules documented with extracted signatures, JSDoc params,
imports, and call graphs. 10 first-class models (PriceRule through
StatusResponse) have their own MD/RST/PDF. Sphinx HTML builds from
docs/sphinx. Per-module PDFs in docs/modules-pdf and docs/models-pdf.

Middleware gates 2–6 and 10 pass on MOCK_VERAE without NATS.

Learned: RST includes are relative to the RST file; keep one PDF per
module; Add Numbers remains the only push required tomorrow.

docs/modules/verae-zapier-middleware/store/webhooks.md

@@ -0,0 +1,51 @@
+# `verae-zapier-middleware/store/webhooks`
+
+**Package:** `verae-zapier-middleware`  
+**Source:** `packages/verae-zapier-middleware/src/store/webhooks.js`  
+**Lines:** 92
+
+## What this module is
+
+Implementation module in `verae-zapier-middleware`. The tables below are extracted from the source (signatures + JSDoc).
+
+## Exports
+
+`createWebhook`, `deleteWebhook`, `getActiveWebhooks`, `listWebhooksForTenant`
+
+## Types / interfaces / classes
+
+_None extracted._
+
+## Functions
+
+| Name | Parameters | Param types (JSDoc) | Returns | Calls (same file / helpers) |
+|------|------------|---------------------|---------|-----------------------------|
+| `createWebhook` | `{ tenantId, targetUrl, event }` | params: `object`, params.tenantId: `string`, params.targetUrl: `string`, params.event: `string` | `Webhook` | see Call graph |
+| `deleteWebhook` | `{ tenantId, hookId, targetUrl }` | params: `object`, params.tenantId: `string`, params.hookId: `string`, params.targetUrl: `string` | `boolean` — True if at least one webhook was removed. | see Call graph |
+| `getActiveWebhooks` | `tenantId, event` | tenantId: `string`, event: `string` | `Webhook[]` | see Call graph |
+| `listWebhooksForTenant` | `tenantId` | tenantId: `string` | `Webhook[]` | see Call graph |
+
+## Methods (class / object)
+
+| Name | Parameters |
+|------|------------|
+| `persist` | `(none)` |
+
+## What it imports / requires
+
+- `node:crypto`
+- `./db.js`
+- `../debug/logger.js`
+
+## Call graph (identifiers invoked)
+
+`createDebugger`, `createWebhook`, `randomUUID`, `toISOString`, `getStore`, `push`, `persist`, `info`, `deleteWebhook`, `filter`, `getActiveWebhooks`, `listWebhooksForTenant`
+
+Each identifier is a call site in this file. Follow the import list to see the defining module; open that module’s MD for parameter and return types.
+
+## Return values (how to read this)
+
+- HTTP route handlers return Express `res.json(...)` bodies (see route docs).
+- Zapier `perform` functions return a **single object** (creates) or an **array** (triggers/searches).
+- Pricing functions return integer **cents** on `Quote.totalCents`.
+