Add 6 real-world use cases from YouTube creator workflow

- YouTube Content Pipeline: Automated video idea scouting with X/Twitter integration
- Personal CRM: Contact discovery and meeting prep automation
- AI Earnings Tracker: Tech earnings monitoring and summaries
- Knowledge Base (RAG): Searchable repository of saved content
- Health & Symptom Tracker: Food and symptom logging with pattern analysis
- Multi-Channel Assistant: Unified interface across Telegram, Slack, Google Workspace

All use cases verified in daily production use by @matthewberman

usecases/personal-crm.md

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+# Personal CRM with Automatic Contact Discovery
+
+Keeping track of who you've met, when, and what you discussed is impossible to do manually. Important follow-ups slip through the cracks, and you forget context before important meetings.
+
+This workflow builds and maintains a personal CRM automatically:
+
+• Daily cron job scans email and calendar for new contacts and interactions
+• Stores contacts in a structured database with relationship context
+• Natural language queries: "What do I know about [person]?", "Who needs follow-up?", "When did I last talk to [person]?"
+• Daily meeting prep briefing: before each day's meetings, researches external attendees via CRM + email history and delivers a briefing
+
+## Skills you Need
+
+- `gog` CLI (for Gmail and Google Calendar)
+- Custom CRM database (SQLite or similar) or use the [crm-query](https://clawhub.ai) skill if available
+- Telegram topic for CRM queries
+
+## How to Set it Up
+
+1. Create a CRM database:
+```sql
+CREATE TABLE contacts (
+  id INTEGER PRIMARY KEY,
+  name TEXT,
+  email TEXT,
+  first_seen TEXT,
+  last_contact TEXT,
+  interaction_count INTEGER,
+  notes TEXT
+);
+```
+2. Set up a Telegram topic called "personal-crm" for queries.
+3. Prompt OpenClaw:
+```text
+Run a daily cron job at 6 AM to:
+1. Scan my Gmail and Calendar for the past 24 hours
+2. Extract new contacts and update existing ones
+3. Log interactions (meetings, emails) with timestamps and context
+
+Also, every morning at 7 AM:
+1. Check my calendar for today's meetings
+2. For each external attendee, search my CRM and email history
+3. Deliver a briefing to Telegram with: who they are, when we last spoke, what we discussed, and any follow-up items
+
+When I ask about a contact in the personal-crm topic, search the database and give me everything you know.
+```