feat: indie status page MVP -- FastAPI + SQLite

- 8 DB models (services, incidents, monitors, subscribers, etc.)
- Full CRUD API for services, incidents, monitors
- Public status page with live data
- Incident detail page with timeline
- API key authentication
- Uptime monitoring scheduler
- 13 tests passing
- TECHNICAL_DESIGN.md with full spec

app/templates/confirm.html

@@ -0,0 +1,9 @@
+{% extends "base.html" %}
+{% block title %}Confirmed{% endblock %}
+{% block content %}
+<div class="confirm-page">
+    <h1>✅ Subscription Confirmed</h1>
+    <p>You're now subscribed to status updates. You'll receive notifications when incidents occur.</p>
+    <a href="/">← Back to Status Page</a>
+</div>
+{% endblock %}