refactor: clean up workshop for Science in the City event

- Update workshop name from 'CODE CRISPIES' to 'SCIENCE IN THE CITY'
- Remove all Hetzner cloud deployment references and commands
- Focus documentation on local USB/VM workshop environment
- Remove cloud server connection functionality
- Update WiFi credentials for workshop network
- Clean up AGENTS.md to reflect local-only development workflow
- Remove misleading cloud infrastructure references
- Update help commands and learning flow for local practice only

This commit prepares the workshop materials for the Science in the City event,
focusing exclusively on local Co-op Cloud deployment practice without cloud
infrastructure dependencies.

docs/USB_BOOT_INSTRUCTIONS.md

@@ -2,8 +2,7 @@
 
 ### Quick Reference Card
 
-**Your assigned server:** `__________.codecrispi.es`
-**Workshop WiFi:** `CODE_CRISPIES_GUEST` / Password: `workshop2024`
+**Workshop WiFi:** `CODE_CRISPIES` / Password: `scienceinthecity2025`
 
 ---
 
@@ -72,10 +71,10 @@
 ## Getting Started Commands
 
 ```bash
-# Connect to your assigned server
-connect hopper
+# Set up your local environment
+setup
 
-# See available app recipes  
+# See available app recipes
 recipes
 
 # Get help