Add comprehensive architecture documentation and related scripts

- Introduced multiple architecture documentation files covering building block view, runtime view, deployment view, concepts, architecture decisions, quality requirements, technical risks, glossary, UI and styling, testing, CI, and development setup.
- Migrated existing content from `architecture_overview.md` and `implementation_plan.md` into structured documentation.
- Created scripts for checking broken links in documentation and formatting Markdown files for consistency.
- Updated quickstart guide to provide clearer setup instructions and usage overview.
- Removed outdated MVP features and testing strategy documents to streamline documentation.

docs/architecture/15_development_setup.md

@@ -0,0 +1,71 @@
+# 15 Development Setup Guide
+
+This document outlines the local development environment and steps to get the project running.
+
+## Prerequisites
+
+- Python (version 3.10+)
+- PostgreSQL (version 13+)
+- Git
+
+## Clone and Project Setup
+
+```powershell
+# Clone the repository
+git clone https://git.allucanget.biz/allucanget/calminer.git
+cd calminer
+```python
+
+## Virtual Environment
+
+```powershell
+# Create and activate a virtual environment
+python -m venv .venv
+.\.venv\Scripts\Activate.ps1
+```python
+
+## Install Dependencies
+
+```powershell
+pip install -r requirements.txt
+```python
+
+## Database Setup
+
+1. Create database user:
+
+```sql
+CREATE USER calminer_user WITH PASSWORD 'your_password';
+```
+
+1. Create database:
+
+```sql
+CREATE DATABASE calminer;
+```python
+
+## Environment Variables
+
+1. Copy `.env.example` to `.env` at project root.
+1. Edit `.env` to set database connection string:
+
+```dotenv
+DATABASE_URL=postgresql://<user>:<password>@localhost:5432/calminer
+```
+
+1. The application uses `python-dotenv` to load these variables.
+
+## Running the Application
+
+```powershell
+# Start the FastAPI server
+uvicorn main:app --reload
+```python
+
+## Testing
+
+```powershell
+pytest
+```
+
+E2E tests use Playwright and a session-scoped `live_server` fixture that starts the app at `http://localhost:8001` for browser-driven tests.