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/quote/update.js

@@ -0,0 +1,132 @@
+import {
+  DELETE_LINES_BY_MANIFEST,
+  GET_MANIFEST_HEADER,
+  QUOTE_TYPE,
+  UPDATE_MANIFEST,
+} from '../../sql/manifestDoc.js';
+import request from '../request.js';
+import resolveSelectedCompanyAccess from '../companyuser/resolveSelectedCompanyAccess.js';
+import taxEnsure from '../tax/ensure.js';
+import { insertLines, normalizeLines, parseDate } from '../manifestLines.js';
+import { assertCustomerEntity, loadDoc, shapeSummary } from '../manifestDoc/helpers.js';
+
+export default function update(pool) {
+  const access = resolveSelectedCompanyAccess(pool);
+  const ensureTax = taxEnsure(pool);
+
+  /**
+   * Updates a quote's header and/or lines.
+   *
+   * @param {number} googleAuthId - The id of the Google auth user.
+   * @param {number} id - The id of the quote to update.
+   * @param {object} patch - The update patch.
+   * @param {string} [patch.number] - The new quote number.
+   * @param {string} [patch.date] - The new quote date.
+   * @param {number} [patch.entityId] - The new customer entity id.
+   * @param {Array<object>} [patch.lines] - The new quote lines.
+   * @returns {Promise<{id: number, number: string, type: string, entityId: number|null, date: string, lines: Array<object>}>} The updated quote.
+   * @throws {Error} If the quote is not found.
+   *
+   * @example
+   * const quote = await store.quote.update(42, 5, { number: 'A-2026-002', lines: [...] });
+   * // => { id, number, type, entityId, date, lines: [...] }
+   */
+  return async (googleAuthId, id, patch = {}) => {
+    if (!Number.isFinite(id)) {
+      throw new Error('Quote not found');
+    }
+
+    const hasNumber = Object.prototype.hasOwnProperty.call(patch, 'number');
+    const hasDate = Object.prototype.hasOwnProperty.call(patch, 'date');
+    const hasEntityId = Object.prototype.hasOwnProperty.call(patch, 'entityId');
+    const hasLines = Object.prototype.hasOwnProperty.call(patch, 'lines');
+
+    if (!hasNumber && !hasDate && !hasEntityId && !hasLines) {
+      throw new Error('Invalid quote');
+    }
+
+    let normalizedLines;
+    if (hasLines) {
+      normalizedLines = normalizeLines(patch.lines);
+    }
+
+    const { companyId, rootCategoryId } = await access(googleAuthId);
+
+    const tx = pool.transaction();
+    await tx.begin();
+
+    try {
+      const existing = await request(pool, tx)
+        .input('id', id)
+        .input('companyId', companyId)
+        .input('type', QUOTE_TYPE)
+        .query(GET_MANIFEST_HEADER);
+
+      const current = existing.recordset[0];
+      if (!current) {
+        throw new Error('Quote not found');
+      }
+
+      const summary = shapeSummary(QUOTE_TYPE, current);
+
+      let number = summary.number;
+      if (hasNumber) {
+        number = patch.number?.trim?.() ? patch.number.trim() : null;
+        if (!number) {
+          throw new Error('Invalid quote');
+        }
+      }
+
+      let date = summary.date;
+      if (hasDate) {
+        date = parseDate(patch.date);
+        if (!date) {
+          throw new Error('Invalid quote');
+        }
+      }
+
+      let entityId = summary.entityId;
+      if (hasEntityId) {
+        entityId = await assertCustomerEntity(
+          pool,
+          tx,
+          companyId,
+          patch.entityId ?? null,
+        );
+      }
+
+      await request(pool, tx)
+        .input('id', id)
+        .input('companyId', companyId)
+        .input('type', QUOTE_TYPE)
+        .input('number', number)
+        .input('entityId', entityId)
+        .input('date', date)
+        .query(UPDATE_MANIFEST);
+
+      if (hasLines) {
+        await request(pool, tx)
+          .input('manifestId', id)
+          .query(DELETE_LINES_BY_MANIFEST);
+
+        await insertLines(pool, tx, {
+          manifestId: id,
+          rootCategoryId,
+          lines: normalizedLines,
+          ensureTax,
+        });
+      }
+
+      const doc = await loadDoc(pool, tx, { type: QUOTE_TYPE, companyId, id });
+      await tx.commit();
+      return doc;
+    } catch (err) {
+      try {
+        await tx.rollback();
+      } catch {
+        // ignore
+      }
+      throw err;
+    }
+  };
+}