Initial commit: README and SDD base spec files

ARCHITECTURE.md

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+# Linux_Patch_Manager - Architecture Document
+
+## Project Overview
+**Title:** Linux_Patch_Manager
+**Version:** 0.0.1
+**Status:** Draft
+
+## Architecture Decisions
+
+<!-- Document key architectural decisions and rationale -->
+
+## System Architecture
+
+<!-- High-level system architecture diagram and description -->
+
+## Component Design
+
+<!-- Detailed component design and interactions -->
+
+## Data Flow
+
+<!-- Data flow between components -->
+
+## Technology Stack
+
+<!-- Technology choices and rationale -->
+
+## Security Architecture
+
+<!-- Security design including authentication, authorization, encryption -->
+
+## Deployment Architecture
+
+<!-- How the system is deployed and configured -->
+
+## Scalability
+
+<!-- How the system scales horizontally and vertically -->
+
+## Integration Points
+
+<!-- External system integrations, especially Linux Patch API -->
+
+**Upstream Dependency:** [Linux Patch API](https://gitea.moon-dragon.us/echo/linux_patch_api)
+
+## Monitoring and Observability
+
+<!-- Logging, metrics, tracing strategy -->