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/sphinx/modules/verae-zapier-middleware/services/authService.md

@@ -0,0 +1,47 @@
+# `verae-zapier-middleware/services/authService`
+
+**Package:** `verae-zapier-middleware`  
+**Source:** `packages/verae-zapier-middleware/src/services/authService.js`  
+**Lines:** 142
+
+## What this module is
+
+Implementation module in `verae-zapier-middleware`. The tables below are extracted from the source (signatures + JSDoc).
+
+## Exports
+
+`loginWithCredentials`, `loginWithApiKey`, `resolveAuthContext`, `validateSession`
+
+## Types / interfaces / classes
+
+_None extracted._
+
+## Functions
+
+| Name | Parameters | Param types (JSDoc) | Returns | Calls (same file / helpers) |
+|------|------------|---------------------|---------|-----------------------------|
+| `loginWithCredentials` | `{ username, password, tenant }` | params: `object`, params.username: `string`, params.password: `string`, params.tenant: `object` | `Promise<{ accessToken: string, expiresAt: string, tenant: object, user: object ` — >} | see Call graph |
+| `loginWithApiKey` | `apiKey` | apiKey: `string` | `Promise<Awaited<ReturnType<typeof loginWithCredentials>>>` | see Call graph |
+| `resolveAuthContext` | `rawToken` | rawToken: `string|null` | `Promise<{ tenantId: string, tenant: object, veraeToken: string, authMethod: string ` — >} | see Call graph |
+| `validateSession` | `rawToken` | rawToken: `string` | `Promise<object>` | see Call graph |
+
+## What it imports / requires
+
+- `../clients/veraeClient.js`
+- `../store/tenants.js`
+- `../lib/tokens.js`
+- `../errors.js`
+- `../debug/logger.js`
+
+## Call graph (identifiers invoked)
+
+`createDebugger`, `loginWithCredentials`, `debug`, `login`, `issueSessionToken`, `loginWithApiKey`, `getTenantByApiKey`, `resolveAuthContext`, `isApiKey`, `parseSessionToken`, `getTenant`, `parse`, `now`, `validateSession`, `validate`
+
+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`.
+