Refactor load testing scripts to support Bash and PowerShell

- Updated README.md to reflect changes in load testing commands and added usage examples for Bash scripts.
- Converted PowerShell load testing scripts to Bash equivalents for better cross-platform compatibility.
- Added new Bash scripts: run-loadtests.sh, summarize-artillery.sh, and summarize-k6.sh to mirror existing PowerShell functionality.
- Updated admin-api.js and ws-chat.yml for consistency and improved performance metrics reporting.
- Enhanced error handling and output formatting in summary scripts for better readability.

docs/infrastructure/cloudflare/cloudflare-account-troubleshooting.md

@@ -6,19 +6,19 @@ Use `wrangler whoami` to verify the account ID and API token are valid, or query
 
 ## Validate Cloudflare account and API token
 
-```powershell
+```bash
 # Validate Cloudflare account and API token in .env
-Set-Location -Path "E:\Documents\02-Projects\07-Mentoring\Corey\linearvoid"
-Get-Content .env | Select-String 'CLOUDFLARE_API_TOKEN'
-Get-Content .env | Select-String 'CLOUDFLARE_ACCOUNT_ID'
+cd /path/to/linearvoid
+grep -E 'CLOUDFLARE_API_TOKEN|CLOUDFLARE_ACCOUNT_ID' .env
 
 # Test API token with wrangler
 npx wrangler whoami
 
 # Or verify with the Workers API directly
-$env:CLOUDFLARE_API_TOKEN = (Get-Content .env | Select-String 'CLOUDFLARE_API_TOKEN' | ForEach-Object { $_.Line.Split('=')[1].Trim() })
-$env:CLOUDFLARE_ACCOUNT_ID = (Get-Content .env | Select-String 'CLOUDFLARE_ACCOUNT_ID' | ForEach-Object { $_.Line.Split('=')[1].Trim() })
+export CLOUDFLARE_API_TOKEN="$(grep '^CLOUDFLARE_API_TOKEN=' .env | cut -d= -f2-)"
+export CLOUDFLARE_ACCOUNT_ID="$(grep '^CLOUDFLARE_ACCOUNT_ID=' .env | cut -d= -f2-)"
 
 # List all Workers for the account
-curl -X GET "https://api.cloudflare.com/client/v4/accounts/$env:CLOUDFLARE_ACCOUNT_ID/workers/scripts" -H "Authorization: Bearer $env:CLOUDFLARE_API_TOKEN" -H "Content-Type: application/json"
+curl -X GET "https://api.cloudflare.com/client/v4/accounts/$CLOUDFLARE_ACCOUNT_ID/workers/scripts" \
+  -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" -H "Content-Type: application/json"
 ```