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Add missing package READMEs, expand Sphinx to all runtime modules,
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defaults to public PDF links for each module README and samples.

docs/sphinx/modules/verae-request-splitter/splitRequest.md

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+# `verae-request-splitter/splitRequest`
+
+**Package:** `verae-request-splitter`  
+**Source:** `packages/verae-request-splitter/src/splitRequest.js`  
+**Lines:** 72
+
+## What this module is
+
+Implementation module in `verae-request-splitter`. The tables below are extracted from the source (signatures + JSDoc).
+
+## Exports
+
+`sha256Hex`, `splitRequest`
+
+## Types / interfaces / classes
+
+_None extracted._
+
+## Functions
+
+| Name | Parameters | Param types (JSDoc) | Returns | Calls (same file / helpers) |
+|------|------------|---------------------|---------|-----------------------------|
+| `sha256Hex` | `data` | data: `string` | `string` | see Call graph |
+| `splitRequest` | `body = {}` | body: `object` | `{
+ *   chain: { sha256: string, hashAlg: string, data?: string ` — , | see Call graph |
+
+## What it imports / requires
+
+- `node:crypto`
+
+## Call graph (identifiers invoked)
+
+`sha256Hex`, `createHash`, `update`, `digest`, `splitRequest`, `toLowerCase`, `keys`, `push`, `isArray`, `from`, `toString`
+
+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`.
+

docs/sphinx/modules/verae-request-splitter/splitRequest.rst

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+verae-request-splitter.splitRequest
+===================================
+
+Generated API sheet for ``verae-request-splitter/splitRequest``.
+
+.. include:: splitRequest.md
+   :parser: myst_parser.sphinx_