Revise README for clarity and additional details

Updated the README to enhance clarity and provide additional context about the scenario, including infrastructure setup and monitoring instructions.

Author: brown9804

scenario1-high-decay/README.md

@@ -0,0 +1,98 @@
+# Scenario 1: High-Load Writable Deployment with Aggressive Logging - Overview 
+
+Costa Rica
+
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+[brown9804](https://github.com/brown9804)
+
+Last updated: 2025-08-27
+
+-----------------------------
+
+> This scenario is intended to demonstrate rapid temporary file accumulation and disk degradation in Azure Functions.
+
+
+## Infrastructure Setup
+
+- **App Service Plan (Windows)** - P1v3 tier for high-load testing
+  - See: [./terraform-infrastructure/variables.tf](./terraform-infrastructure/variables.tf) (lines 12-21)
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (lines 35-45)
+- **Deployment Method**: Standard deployment (extracted .zip)
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (line 115)
+  ```terraform
+  # Force standard deployment instead of mounted package
+  "WEBSITE_RUN_FROM_PACKAGE" = "0"
+  ```
+- **Application Insights**: Full logging (no sampling)
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (lines 47-56)
+  ```terraform
+  # No sampling configured - full logging
+  sampling_percentage = 100
+  ```
+- **Verbose Diagnostics**: Enabled
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (line 118)
+  ```terraform
+  # Enable full diagnostics
+  "WEBSITE_ENABLE_DETAILED_DIAGNOSTICS" = "true"
+  ```
+- **Storage Logging**: Enabled
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (line 124)
+  ```terraform
+  # Log to storage account (increases I/O operations)
+  "AzureWebJobsDashboard" = azurerm_storage_account.storage.primary_connection_string
+  ```
+- **WEBSITE_RUN_FROM_PACKAGE**: Disabled (set to "0")
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (line 115)
+- **Key Vault Integration**: Secrets stored in Azure Key Vault
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (lines 147-193)
+- **Managed Identity**: System-assigned identity for Key Vault access
+  - See: [./terraform-infrastructure/main.tf](./terraform-infrastructure/main.tf) (lines 96-98)
+
+## Expected Results
+
+- Rapid temp file accumulation in `C:\local\Temp`
+- Disk decay within 1-2 days
+- Restart clears only partial space due to locked files
+
+## Deployment Instructions
+
+> For detailed deployment instructions including VS Code deployment and Azure DevOps pipeline samples, see the [DEPLOYMENT.md](./DEPLOYMENT.md) guide.
+
+1. Go to the terraform-infrastructure directory:
+   ```
+   cd scenario-1-high-decay/terraform-infrastructure
+   ```
+
+2. Update the `terraform.tfvars` file with your Azure subscription ID and preferred configuration values.
+
+3. Initialize Terraform:
+   ```
+   terraform init
+   ```
+
+4. Apply the Terraform configuration:
+   ```
+   terraform apply
+   ```
+
+5. After infrastructure deployment, follow the deployment approaches in [DEPLOYMENT.md](./DEPLOYMENT.md) to publish the function app.
+
+## Testing
+
+> The function app includes HTTP triggers that can be used to test disk usage under load
+
+## Monitoring
+
+> Monitor the function app using:
+
+- Azure Portal > Function App > Platform features > Advanced tools (Kudu)
+- Application Insights
+- Azure Monitor metrics
+
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