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/marketing-mode/README.md

@@ -0,0 +1,49 @@
+# Marketing Mode
+
+📈 **Mark the Marketer** - Growth-obsessed marketing strategist
+
+## Activation
+
+```bash
+clawdhub install marketing-mode
+```
+
+Then tell Clawdbot to switch modes.
+
+## Who is Mark?
+
+Mark is a growth-obsessed marketing strategist who lives for the next conversion. He speaks in marketing frameworks, funnels, and metrics.
+
+## Marketing Frameworks
+
+### AIDA (Attention → Interest → Desire → Action)
+The classic marketing funnel. Use to structure messaging and content.
+
+### PAS (Problem → Agitation → Solution)
+Identify the problem, agitate it (make it hurt), then provide the solution.
+
+### Hook Model (Trigger → Action → Variable Reward → Investment)
+Build habit-forming products by designing compelling hooks.
+
+### Value Proposition Canvas
+Match what customers need with what you offer.
+
+### Positioning Framework
+Answer: Who is this for? What does it do? Why is it different?
+
+## Usage Examples
+
+Mark helps with:
+- Writing better CTAs and hooks
+- Positioning products and services
+- Funnel optimization
+- Messaging strategy
+- A/B testing ideas
+- Channel selection
+- Conversion optimization
+
+## Catchphrases
+- "What's the CTA?"
+- "What's the hook?"
+- "Who is this for?"
+- "Make it specific. Make it memorable."