feat: IMAP mail sync with thread-to-contact matching (PRD §6.1)

Real IMAP connection via imapflow library:
- Connects to IMAP server (IMAPFlow, TLS on port 993)
- Fetches recent messages (configurable limit, default 20)
- Extracts: from, fromEmail, subject, date, snippet (200 chars)
- Thread-to-contact matching (PRD §6.1):
  1. Match sender email against persons table
  2. If no person match, extract domain and match against company.website
  3. Returns matchedCompany + matchedPerson for each email
- Audit-logged (action: crm.mailsync:imap)
- Zod validated (host, port, user, password, folder, limit)
- 502 on IMAP connection failure with detail
- 400 on validation failure

Tested: invalid creds → 502 'IMAP connection failed', missing host → 400

skills/design/design-systems/style-skills/parchment/DESIGN.md

@@ -0,0 +1,70 @@
+---
+name: Parchment
+colors:
+  primary: "#1B365D"
+  secondary: "#2D5A8A"
+  success: "#16A34A"
+  warning: "#D97706"
+  danger: "#DC2626"
+  surface: "#f5f4ed"
+  text: "#141413"
+  neutral: "#faf9f5"
+typography:
+  h1:
+    fontFamily: "LXGW WenKai Screen"
+    fontSize: 2.25rem
+  body-md:
+    fontFamily: "LXGW WenKai Screen"
+    fontSize: 1rem
+  label-caps:
+    fontFamily: "JetBrains Mono"
+    fontSize: 0.75rem
+  sourceScale: "12/14/16/18/22/26/36"
+  weights: "400, 500"
+rounded:
+  sm: 2px
+  md: 4px
+spacing:
+  sm: 6px
+  md: 12px
+  sourceScale: "6/12/16/24/32/48"
+---
+
+## Overview
+
+Warm, editorial, print-leaning document system. A calm parchment background, a single ink-blue accent, and a serif-led hierarchy give long-form and formal documents a published, authored feel — résumés, reports, white papers, letters, and editorial reading pages. Built for reading and print (A4 / PDF), not for dense product UI.
+
+## Style Foundations
+
+- **Visual style:** editorial, formal, print-leaning, warm, content-first
+- **Typography scale:** 12/14/16/18/22/26/36
+- **Typography fonts:** primary=LXGW WenKai Screen (霞鹜文楷, Chinese), display=Charter (English serif), mono=JetBrains Mono
+- **Typography weights:** 400, 500 (no synthetic bold; weight 500 carries headings)
+- **Color palette:** parchment surface, near-black/olive/stone ink tiers, single ink-blue accent
+- **Spacing scale:** 6/12/16/24/32/48
+- **Surface:** warm parchment `#f5f4ed` / ivory `#faf9f5`, never pure white
+- **Page model:** A4, ~14mm/16mm margins, real pagination, `print-color-adjust: exact`
+- **Body rhythm:** line-height ~1.55, controlled measure (never full-page-width lines)
+
+## Colors
+
+- **Primary (#1B365D):** Ink-blue accent — section rules, headers, emphasis. The only accent; never add a second.
+- **Secondary (#2D5A8A):** Lighter ink-blue for links or subtle secondary emphasis.
+- **Success (#16A34A):** Status only, used sparingly (e.g. changelog "added").
+- **Warning (#D97706):** Status only, used sparingly.
+- **Danger (#DC2626):** Status only, used sparingly.
+- **Surface (#f5f4ed):** Warm parchment page background — the signature of this system.
+- **Text (#141413):** Near-black body ink; secondary tier olive `#504e49`, meta tier stone `#6b6a64`.
+- **Neutral (#faf9f5):** Ivory, for raised blocks / cards on the parchment ground.
+
+## Fonts
+
+Chinese serif loads online (no bundled font files):
+
+```
+@import url("https://cdn.jsdelivr.net/npm/cn-fontsource-lxgw-wen-kai-screen-r/font.css");
+```
+
+Stack: `"LXGW WenKai Screen", "Source Han Serif SC", "Noto Serif CJK SC", "Songti SC", Charter, Georgia, serif`. English uses Charter first. One serif per page (`--sans: var(--serif)`); reserve JetBrains Mono for code/figures/numbers only.
+
+When exporting to PDF, the online Chinese font may fall back to a system CJK serif; install LXGW WenKai locally if exact rendering is required, otherwise the fallback is acceptable.