docs: Add 10 momentum pages — full launch content kit

How It Works, Security, Roadmap, Live Demo, Hosting Providers,
Documentation Hub, Status, Pricing, Changelog, Founder. These
build perceived scale, trust, and conversion infrastructure.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/SECURITY.md

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+# Security by Design
+
+Corrosion was built with multi-tenant isolation from day one.
+
+---
+
+## Outbound-Only Connections
+
+Your server initiates all connections.
+No inbound ports required.
+
+## License-Scoped Isolation
+
+Every server is isolated by `license_id`.
+No cross-tenant data exposure.
+
+## Encrypted Secrets
+
+API keys, webhooks, and credentials are encrypted at rest.
+
+## Short-Lived Auth Tokens
+
+JWT sessions expire quickly and require refresh.
+
+## Role-Based Access Control
+
+Granular permission enforcement on every API endpoint.
+
+---
+
+## Built on Modern Infrastructure
+
+* Rust backend (Axum)
+* NATS JetStream messaging
+* PostgreSQL
+* Cloudflare DNS + SSL
+
+Corrosion is engineered like infrastructure — not hobbyware.