Rewrite store JSDoc, split quote/order into modules, and generate typed API docs

- Rewrite JSDoc across all store methods to document the actual async
  methods (real params, returns, throws) instead of the internal wrappers
- Split quote/order into individual module files backed by shared
  manifestDoc helpers; remove the createStore factory and thin wrappers
- Deduplicate manifest line helpers into src/store/manifestLines.js
- Extend generate-api-doc.js to render parameter/return/throws types and
  emit per-namespace API.<module>.md files with an API.md index
- Regenerate all API docs

src/store/numbers/nextNumber.js

@@ -2,6 +2,18 @@ import { ENSURE_TYPE } from '../../sql/numbers.js';
 import request from '../request.js';
 
 export default function nextNumber(pool) {
+  /**
+   * Allocates and returns the next number for a company and type, consuming it.
+   *
+   * @param {number} companyId - The id of the company.
+   * @param {string} type - The number type (e.g. `'entity'`, `'sku'`).
+   * @param {object} [tx] - Optional transaction to run within.
+   * @returns {Promise<string>} The allocated number.
+   *
+   * @example
+   * const number = await store.numbers.next(1, 'entity');
+   * // => '1'
+   */
   return async (companyId, type, tx) => {
     await request(pool, tx)
       .input('companyId', companyId)

src/store/numbers/nextSku.js

@@ -2,5 +2,16 @@ import nextNumber from './nextNumber.js';
 
 export default function nextSku(pool) {
   const allocate = nextNumber(pool);
+  /**
+   * Allocates and returns the next SKU for a company, consuming it.
+   *
+   * @param {number} companyId - The id of the company.
+   * @param {object} [tx] - Optional transaction to run within.
+   * @returns {Promise<string>} The allocated SKU.
+   *
+   * @example
+   * const sku = await store.numbers.nextSku(1);
+   * // => '1'
+   */
   return (companyId, tx) => allocate(companyId, 'sku', tx);
 }

src/store/numbers/peekNumber.js

@@ -2,6 +2,18 @@ import { ENSURE_TYPE } from '../../sql/numbers.js';
 import request from '../request.js';
 
 export default function peekNumber(pool) {
+  /**
+   * Returns the next number for a company and type without consuming it.
+   *
+   * @param {number} companyId - The id of the company.
+   * @param {string} type - The number type (e.g. `'entity'`, `'sku'`).
+   * @param {object} [tx] - Optional transaction to run within.
+   * @returns {Promise<string>} The next number.
+   *
+   * @example
+   * const number = await store.numbers.peek(1, 'entity');
+   * // => '1'
+   */
   return async (companyId, type, tx) => {
     await request(pool, tx)
       .input('companyId', companyId)