Add dashboard-style console UI with ratatui for real-time monitoring

Cargo.toml

@@ -19,18 +19,20 @@ axum = { version = "0.8.4", default-features = false, features = [
 ] }
 clap = "4.5.46"
 config = { version = "0.15.15", default-features = false, features = ["toml"] }
+crossterm = "0.28"
 env_logger = { version = "0.11.8", default-features = false, features = [
   "auto-color",
 ] }
 log = { version = "0.4.27", default-features = false }
+ratatui = "0.29"
 reqwest = { version = "0.12.22", default-features = false, features = [
   "json",
   "rustls-tls",
 ] }
 serde = { version = "1.0.217", default-features = false, features = ["derive"] }
 serde_json = { version = "1.0.143", default-features = false }
 thiserror = "2.0"
-tokio = { version = "1.47.1", features = ["macros", "rt-multi-thread"] }
+tokio = { version = "1.47.1", features = ["macros", "rt-multi-thread", "sync"] }
 
 [profile.release]
 opt-level = 'z'

README.md

@@ -14,6 +14,27 @@ cross-monitoring and ensure Fluxa itself remains up and running.
 
 ![fluxa >](https://raw.githubusercontent.com/rbas/fluxa/main/assets/fluxa.webp)
 
+### Dashboard Mode
+
+The interactive dashboard provides real-time monitoring with a clean terminal interface:
+
+```
+┌Status───────────────────────────────────────────────────────────────────────────────────┐
+│Fluxa Dashboard - Filter: All | Sort: Url | Services: 3                                  │
+└─────────────────────────────────────────────────────────────────────────────────────────┘
+┌MonitoredServices───────────────────────────────────────────────────────────────────────┐
+│URL                        Status      Response Time    Next Check       Error           │
+│https://example.com        Healthy     150.23ms        2m15s            -               │
+│https://api.service.com    Unhealthy   N/A             5s               HTTP 503: Serv… │
+│https://backup.service.com Healthy     89.45ms         1m30s            -               │
+└─────────────────────────────────────────────────────────────────────────────────────────┘
+┌Help─────────────────────────────────────────────────────────────────────────────────────┐
+│q/Esc: Quit | f: Filter | s: Sort | ↑/k: Up | ↓/j: Down                                 │
+└─────────────────────────────────────────────────────────────────────────────────────────┘
+```
+
+*Dashboard showing real-time monitoring status with color-coded health indicators*
+
 ## 🚀 Fluxa Features
 
 * **Lightweight and Efficient:** Fluxa has very low RAM usage (in units of MB),
@@ -22,24 +43,73 @@ making it ideal for low-resource environments.
 services like Uptime Kuma, but flexible enough to monitor any service by URL.
 * **Minimal Footprint:** Fluxa is a small, reliable service designed to
 run efficiently without consuming excessive resources.
+* **Interactive Dashboard:** Real-time terminal UI dashboard showing service status,
+response times, and monitoring progress with vim-like key bindings.
+* **Dual Operation Modes:** Choose between headless mode for server deployments
+or dashboard mode for interactive monitoring.
 
 ## 🛠 Usage
 
 Once **Fluxa** is installed and the configuration file is ready, you can run it
 by executing the binary with the `--config` parameter, followed by the path
 to your configuration file.
 
-For example:
+### Headless Mode (Default)
+
+For headless monitoring with log output:
 
 ```shell
 ./fluxa --config /path/to/your/config.toml
 ```
 
-This will start **Fluxa**, and it will begin monitoring the services defined in your
+This will start **Fluxa** in headless mode, and it will begin monitoring the services defined in your
 configuration file. Additionally, Fluxa's internal web server will be running
 at the configured listen address (e.g., `127.0.0.1:8080`)
 to allow cross-monitoring of *Fluxa* itself.
 
+### Dashboard Mode
+
+For interactive terminal dashboard monitoring:
+
+```shell
+./fluxa --config /path/to/your/config.toml --dashboard
+```
+
+Or using the short form:
+
+```shell
+./fluxa -c /path/to/your/config.toml -d
+```
+
+The dashboard mode provides a real-time terminal UI that displays:
+
+- **All monitored URLs** with current status (Healthy/Unhealthy)
+- **Response times** in milliseconds for successful requests
+- **Next check countdown** showing when the next monitoring check will occur
+- **Error messages** for failed requests or connectivity issues
+- **Interactive filtering and sorting** options
+
+#### Dashboard Key Bindings (Vim-style)
+
+- **q** or **Esc**: Quit the dashboard
+- **f**: Toggle filter modes (All → Healthy Only → Unhealthy Only → All)
+- **s**: Toggle sort modes (URL → Status → Response Time → Next Check → URL)
+- **k** or **↑**: Move selection up
+- **j** or **↓**: Move selection down
+
+#### Filter Modes
+
+- **All**: Show all monitored services
+- **Healthy Only**: Show only services that are currently healthy
+- **Unhealthy Only**: Show only services that are currently down or failing
+
+#### Sort Modes
+
+- **URL**: Sort alphabetically by service URL
+- **Status**: Sort by health status (unhealthy services first)
+- **Response Time**: Sort by response time (fastest first)
+- **Next Check**: Sort by next check time (soonest first)
+
 ## 📦 Installation
 
 You can install Fluxa in two ways: by downloading a pre-compiled binary