## Description
This PR introduces a comprehensive **Connection Reporting System** designed to improve the reliability and monitoring of connections, specifically tailored for environments with restricted internet access (e.g., active censorship, GFW).
### Key Changes
1. **New Reporting API (`/report`)**:
* Added `ReportController` and `ReportService` to handle incoming connection reports.
* Endpoint receives data such as `Latency`, `Success` status, `Protocol`, and Client Interface details.
* Data is persisted to the database via the new `ConnectionReport` model.
2. **Subscription Link Updates**:
* Modified `subService` to append a `reportUrl` parameter to generated subscription links (VLESS, VMess, etc.).
* This allows compatible clients to automatically discover the reporting endpoint and send feedback.
3. **Database Integration**:
* Added `ConnectionReport` schema to `database/model` and registered it in `database/db.go` for auto-migration.
## Why is this helpful for Restricted Internet Locations?
In regions with heavy internet censorship, connection stability is volatile.
* **Dynamic Reporting Endpoint**: The `reportUrl` parameter embedded in the subscription link explicitly tells the client *where* to send connection data.
* **Bypassing Blocking**: By decoupling the reporting URL from the node address, clients can ensure diagnostic data reaches the panel even if specific node IPs are being interfered with (assuming the panel itself is reachable).
* **Real-time Network Intelligence**: This mechanism enables the panel to aggregate "ground truth" data from clients inside the restricted network (e.g., latency, accessibility of specific protocols), allowing admins to react faster to blocking events.
* **Protocol Performance Tracking**: Allows comparison of different protocols (Reality vs. VLESS+TLS vs. Trojan) based on real-world latency and success rates from actual users.
* **Rapid Troubleshooting**: Administrators can see connection quality trends and rotate IPs/domains proactively when success rates drop, minimizing downtime for users.
## Technical Details
* **API Endpoint**: `POST /report`
* **Payload Format**: JSON containing `SystemInfo` (Interface), `ConnectionQuality` (Latency, Success), and `ProtocolInfo`.
* **Security**: Reports are tied to valid client request contexts (implementation detail: ensure endpoint is rate-limited or authenticated if necessary, though currently designed for open reporting from valid sub links).
## How to Test
1. Update the panel.
2. Generate a subscription link.
3. Observe the `reportUrl` parameter in the link.
4. Simulate a client POST to the report URL and verify the entry in the `ConnectionReports` table.
* chore: implement 2fa auth
from #2786
* chore: format code
* chore: replace two factor token input with qr-code
* chore: requesting confirmation of setting/removing two-factor authentication
otpauth library was taken from cdnjs
* chore: revert changes in `ClipboardManager`
don't need it.
* chore: removing twoFactor prop in settings page
* chore: remove `twoFactorQr` object in `mounted` function
* Revert "json post base path bug fixed (#2647)"
This reverts commit 04cf250a54.
* Revert "Group Management of Subscription Clients"
* Revert "fix getSubGroupClients for enable/disable and edit clients."
* Revert "Enhance database initialization in db.go (#2645)"
This reverts commit 66fe84181b.
* Revert "Add checkpoint handling in CloseDB function (#2646)"
This reverts commit 4dd40f6f19.
* Revert "Improved database model migration and added indexing (#2655)"
This reverts commit b922d986d6.
- Updated GORM configuration to skip default transactions and prepare statements.
- Modified the database connection string to include caching and journal mode settings.
- Executed several PRAGMA statements to optimize SQLite performance and enable foreign key support.
These changes improve database handling and performance in the application.
Co-authored-by: Zakhar Izmaylov <ptdev@kedruss.ru>
