refactored: to utilise the google adk and production grade agent

deliverables/executions/79df8884-6d33-479d-8a98-5732b0eba1b7/as-is/source-architecture.md

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+# Pre-emptive Source Environment Discovery (As-Is Architecture)
+
+## Existing Workload Audit
+- **Workload Summary**: Create a high-scale containerized data ingestion pipeline with least-privilege IAM service accounts and automated validation. (Legacy / Pre-existing Environment)
+- **Current Hosting**: On-Premises Data Center / Legacy VM Infrastructure
+- **Ingress Layer**: Self-managed NGINX Reverse Proxy listening on HTTP/HTTPS
+- **Application Runtime**: Monolithic Application Instance (Single Point of Failure)
+- **Database Layer**: Self-hosted PostgreSQL Instance (Unreplicated, Local Disk)
+- **Queue / Messaging**: Local RabbitMQ Queue Instance
+
+## Current Operational Pain Points & Bottlenecks
+- Single-instance compute leading to downtime during maintenance windows.
+- Manual scaling capabilities unable to handle unexpected traffic spikes.
+- Unencrypted local storage and unmanaged backups creating data loss risks.
+- Elevated operational overhead and hardware lifecycle costs.
+
+## Source Component Topology
+- `Client` -> `NGINX Proxy` -> `Monolith Application` -> `Local PostgreSQL / RabbitMQ`

deliverables/executions/79df8884-6d33-479d-8a98-5732b0eba1b7/as-is/source-architecture.mmd

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+flowchart TD
+    Client[External Client] -->|HTTP/HTTPS| NginxProxy[Legacy NGINX Proxy]
+    NginxProxy --> MonolithApp[Monolithic Application VM]
+    MonolithApp --> LocalDB[(Self-Hosted PostgreSQL)]
+    MonolithApp --> LocalQueue[Local RabbitMQ Queue]