🔧 chore(repo): restructure project file hierarchy

- move project files out of fleetledger directory to root
- update .gitignore to reflect new .env path

📝 docs(README): add detailed project description

- provide an overview of FleetLedger's features and usage
- include setup instructions and security notes

README.md

@@ -0,0 +1,86 @@
+# FleetLedger
+
+FleetLedger is a small self-hosted web app to keep track of your rented servers:
+
+- VPS, dedicated servers, storage boxes, managed services
+- Provider, location, IPs, hardware
+- Monthly / yearly pricing and contract dates
+- Simple access info (management URLs, SSH user + key hint)
+- Multi-user support with per-user data separation
+- Admin user management (activate / deactivate users)
+- Dark-mode-first UI with PWA support (installable as an app)
+- Per-user **map view** for server locations
+- Admin **global dashboard** for fleet-wide stats
+
+> **Security note:** FleetLedger is *not* a full password manager.
+> It is intentionally designed to store only **management password(s) optionally** and
+> only **SSH key *names*** (no private keys).
+
+---
+
+## Features
+
+- **Authentication & Users**
+  - User registration + login (session cookie based)
+  - First registered user becomes **admin**
+  - Admin can view all users and activate/deactivate them
+  - Deactivated users cannot log in and will be logged out automatically
+
+- **Server Management**
+  - Each user has their own list of servers (no cross-visibility)
+  - Create / edit / archive (soft-delete) servers
+  - Fields include:
+    - General: name, hostname, type (VPS, dedicated, storage, managed, other), provider, location, tags
+    - Network: IPv4, IPv6
+    - Billing: price, currency, billing period (monthly/yearly/other), contract start/end
+    - Hardware: CPU model, core count, RAM, storage size & type
+    - Access: management URL, management user, management password (optional), SSH user, SSH key hint
+    - Free-form notes
+  - Contract badges:
+    - **"abgelaufen"** (expired): contract end in the past
+    - **"läuft bald aus"** (expiring soon): contract end within the next 30 days
+    - Detail view also shows how many days until / since contract end
+
+- **Per-user Dashboard & Map**
+  - On `/`: small dashboard row showing:
+    - number of active servers
+    - estimated total monthly cost
+    - how many contracts are expiring soon / already expired
+  - On `/map`: Leaflet-based map showing all non-archived servers of the logged-in user
+    - Marker position is derived from the `location` string (city/datacenter name)
+    - Multiple servers per city are slightly offset so all markers remain clickable
+    - Click on a marker → opens the server details page
+
+- **Admin Global Dashboard**
+  - On `/admin/dashboard` (admin only):
+    - Global counts: users, servers, monthly cost, expiring soon, expired
+    - Breakdown by provider (server count, monthly total, expiring soon, expired)
+    - List of contracts expiring soon and already expired
+
+- **Security**
+  - Passwords hashed with **bcrypt** (`passlib[bcrypt]`)
+  - Optional encryption for management passwords using **Fernet** (`cryptography`)
+  - No private SSH keys are stored, only name/hint strings
+  - Jinja2 auto-escaping enabled; no untrusted HTML is rendered with `|safe`
+  - Management URLs are restricted to `http://` or `https://` (no `javascript:` links, etc.)
+
+- **UI / UX**
+  - TailwindCSS via CDN for quick styling
+  - Dark mode is **enabled by default**
+  - Theme preference stored in `localStorage` and toggleable via a small button
+  - Responsive layout, works well on mobile
+  - PWA manifest and service worker for a simple offline-friendly experience
+
+---
+
+## Quick Start (Docker)
+
+### 0. Environment
+
+Kopiere `.env-example` nach `.env` und setze mindestens ein starkes `SESSION_SECRET`. Für lokale HTTP-Tests kannst du `SESSION_COOKIE_SECURE=0` setzen, in Produktion sollte es `1` bleiben. Optional kannst du einen `ENCRYPTION_KEY` (Fernet) hinterlegen, um Management-Passwörter zu speichern.
+
+### 1. Clone / copy the repository
+
+```bash
+git clone https://example.com/your/fleetledger.git
+cd fleetledger