chore(agent): configure AI agents and tools

Add configuration for BMad, Claude, OpenCode, and other AI agent tools and workflows.

.opencode/skills/astro-cloudflare-deploy/assets/dev.vars.example

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+# .dev.vars - Local development secrets
+# Copy this file to .dev.vars and fill in your values
+# IMPORTANT: Add .dev.vars to .gitignore!
+
+# Cloudflare Account
+CLOUDFLARE_ACCOUNT_ID=your-account-id-here
+
+# API Keys
+API_KEY=your-local-api-key
+API_SECRET=your-local-api-secret
+
+# Database URLs
+DATABASE_URL=postgresql://localhost:5432/mydb
+REDIS_URL=redis://localhost:6379
+
+# Third-party Services
+STRIPE_SECRET_KEY=sk_test_your_key
+SENDGRID_API_KEY=your_sendgrid_key
+
+# OAuth (if using authentication)
+GITHUB_CLIENT_ID=your_github_client_id
+GITHUB_CLIENT_SECRET=your_github_client_secret
+
+# Feature Flags
+ENABLE_ANALYTICS=false
+ENABLE_BETA_FEATURES=true