fix: refactored manually

app/skills/architecture_design/SKILL.md

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+---
+name: architecture_design
+phase: design
+description: Guidance for GCP product selection, architecture design markdown, Mermaid diagrams, and Terraform IaC generation.
+---
+
+# Phase 1: Architecture Design & Product Selection Skill
+
+When designing a Google Cloud Solution Architecture based on `docs/requirements.md`:
+
+1. **Resolve Deferred Product Choices**: Select Google Cloud managed services suited for regional high availability and scale:
+   - Compute: Cloud Run / Cloud Functions / GKE.
+   - Messaging & Ingestion: Pub/Sub, Eventarc, or Cloud Tasks.
+   - State & Storage: Cloud Storage, Firestore, Cloud SQL, or Spanner.
+   - Identity & Security: Cloud IAM, Secret Manager, KMS, Artifact Registry.
+2. **Architecture Documentation (`docs/architecture.md`)**:
+   - Provide executive summary, component responsibilities, data flow, security model, and cost model.
+3. **Mermaid Diagram (`architecture.mmd`)**:
+   - Render clean, valid Mermaid syntax (`graph TD` or `flowchart TD`) mapping client ingress, compute, messaging, and storage components.
+4. **Terraform Infrastructure as Code (`terraform/`)**:
+   - Produce valid Terraform HCL files (`main.tf`, `variables.tf`, `outputs.tf`, `versions.tf`).
+   - Ensure planability without credentials or resource provisioning during validation.