feat: cleanup caipe scripts and better error handling

[suwhang-cisco]

Much neater logs and indentations. Also better error handling for fetching vault secrets.

Example output when running setup-all.sh:

outshift> $HOME/work/stacks/caipe/scripts/setup-all.sh --envFile $HOME/.env_vars
[2025-10-24 16:44:18] [1/4] Running setup-llm-credentials.sh...
[2025-10-24 16:44:18] 🔧 Setting up LLM credentials for AI Platform Engineering
[2025-10-24 16:44:18] [Step 1/4] Starting Vault port forward...
[2025-10-24 16:44:21]   - Loading environment variables from: /home/ubuntu/.env_vars
[2025-10-24 16:44:21] [Step 2/4] Setting up LLM credentials...
[2025-10-24 16:44:21]   - Using provider from env file: azure-openai
[2025-10-24 16:44:21]   - Note: Sensitive credentials will not be displayed on screen
[2025-10-24 16:44:21]   - Loading environment variables from: /home/ubuntu/.env_vars
[2025-10-24 16:44:21]   ✓ Using existing value detected for Azure OpenAI API Key in env file. Auto-populating...
[2025-10-24 16:44:21]   ✓ Using existing value detected for Azure OpenAI Endpoint in env file. Auto-populating...
[2025-10-24 16:44:21]   ✓ Using existing value detected for Azure OpenAI API Version in env file. Auto-populating...
[2025-10-24 16:44:21]   ✓ Using existing value detected for Azure OpenAI Deployment Name in env file. Auto-populating...
[2025-10-24 16:44:21] [Step 3/4] Storing credentials in Vault...
[2025-10-24 16:44:21]   - ✅ LLM credentials successfully stored in Vault
[2025-10-24 16:44:21]   - 🔗 You can verify at: https://vault.cnoe.localtest.me:8443/ui/vault/secrets/secret/kv/ai-platform-engineering%2Fglobal
[2025-10-24 16:44:21] [Step 4/4] Cleanup completed
[2025-10-24 16:44:21] [2/4] Running setup-agent-secrets.sh...
[2025-10-24 16:44:21] 🔧 Setting up agent secrets based on active agents
[2025-10-24 16:44:22] [Step 1/5] Starting Vault port forward...
[2025-10-24 16:44:25] [Step 2/5] Checking for active agents using kubectl command...
[2025-10-24 16:44:26]   List of detected active agents: github argocd backstage
[2025-10-24 16:44:26] [Step 3/5] Configuring secrets for active agents found in Step 2
[2025-10-24 16:44:26]   - Note: Sensitive credentials will not be displayed on screen
[2025-10-24 16:44:26]   - 📄 Loading environment variables from: /home/ubuntu/.env_vars
[2025-10-24 16:44:26]   - Configuring GitHub agent secrets...
[2025-10-24 16:44:26]   - Configuring ArgoCD agent secrets...
[2025-10-24 16:44:26]     └─> Using existing ArgoCD Token from Vault
[2025-10-24 16:44:26]     └─> Using existing ArgoCD API URL from Vault
[2025-10-24 16:44:26]     └─> Using existing ArgoCD Verify SSL setting from Vault
[2025-10-24 16:44:26]   - Configuring Backstage agent secrets...
[2025-10-24 16:44:26]     └─> Using existing Backstage API Token from Vault
[2025-10-24 16:44:26]     └─> Using existing Backstage URL from Vault
[2025-10-24 16:44:26] [Step 4/5] Storing agent secrets in Vault...
[2025-10-24 16:44:26]   - ✅ GitHub secrets stored
[2025-10-24 16:44:26]   - ✅ ArgoCD secrets stored
[2025-10-24 16:44:26]   - ✅ Backstage secrets stored
[2025-10-24 16:44:26]   - Configured agents: github,argocd,backstage
[2025-10-24 16:44:26]   - 🔗 You can verify individual agent secrets at the Vault UI: https://vault.cnoe.localtest.me:8443/ui/vault/secrets/secret/kv/list/ai-platform-engineering/
[2025-10-24 16:44:26] [Step 5/5] Cleanup completed
[2025-10-24 16:44:26] [3/4] Waiting 2 seconds before refreshing secrets...
[2025-10-24 16:44:28] [4/4] Running refresh-secrets.sh...
[2025-10-24 16:44:28] [Step 1/5] Starting AI Platform Engineering cleanup process...
[2025-10-24 16:44:28] [Step 2/5] Deleting all secrets in ai-platform-engineering namespace...
[2025-10-24 16:44:28] [Step 3/5] Waiting 1 second for cleanup to complete...
[2025-10-24 16:44:29] [Step 4/5] Deleting all pods in ai-platform-engineering namespace...
[2025-10-24 16:44:32] [Step 5/5] Sleep for 5s to wait for the new pods to get ready
[2025-10-24 16:44:37] All pods are running 🎉
[2025-10-24 16:44:37] ✅ All scripts completed successfully