Update README with Dolphin GUI flow, remote usage instructions, and release checklist

README.md

@@ -68,6 +68,26 @@ Installed into:
 - Plasma 6: `/usr/share/kio/servicemenus/`
 - Plasma 5: `/usr/share/kservices5/ServiceMenus/`
 
+### 🖱️ Dolphin (GUI) Flow — Share with Invite
+
+1. **Right-click a folder → “Share via BackTunnel…”**  
+2. Enter **Remote** (`user@host` or `user:host`), choose **Duration**, **Tunnel port** (default `2222`), and **Local SSH port** (default `22`).  
+3. When prompted:
+   - **Print invite line for chat?** → Yes to get a one-liner your colleague can paste.
+   - **Show QR code for the invite?** → Yes (requires `qrencode`) to display a terminal QR.
+   - **Suggested mount point** → Accept `/mnt/remote-rssh` or set your own.
+4. A terminal opens, shows the **invite** (and QR if selected), and keeps the share open for the chosen duration.  
+   - Stop early with **Ctrl+C**.
+
+**What the remote user does (on the remote host):**
+
+```bash
+# Paste the invite you sent them, e.g.:
+backtunnel-access '/path/to/folder' from user@vps.example.com -p 2222 -m '/mnt/remote-rssh'
+# Unmount when done:
+fusermount -u /mnt/remote-rssh    # or: umount /mnt/remote-rssh
+```
+
 ---
 
 ## 🔐 Requirements
@@ -89,6 +109,16 @@ sudo bash scripts/uninstall.sh
 
 ---
 
+## 📦 Release checklist (BackTunnel v1.2.x)
+
+1. **Version bump** (if needed) in docs/man where referenced (man page already shows `1.2`).  
+2. **Tag the repo**:
+
+```bash
+   git tag -a v1.2.0 -m "BackTunnel 1.2.0"
+   git push --tags
+```
+
 ## 📖 Man Page
 ```bash
 man backtunnel