v1.8.10

v1.8.10

New

• piqrypt vigil — reopen Vigil dashboard with existing agents
• piqrypt demo — fully isolated sandbox (agents + peers purged before/after)
• Welcome screen in Vigil when no agents exist
• Demo mode banner in Vigil + wizard disabled during demo

Fixes

• Double browser open on demo fixed
• Agent created via piqrypt init now visible in Vigil immediately
• Free tier limit (3 agents) enforced in CLI and Vigil
• External demo peers (peers.json) purged on demo reset
• Post-demo cleanup moved to finally block (guaranteed execution)