feat: initial release v0.1.0

- KKTerm-style UI: Activity Rail, Connection Sidebar, Tabbed Workspace
- Serial Port connection (System.IO.Ports)
- SSH connection (SSH.NET, password/key/keyboard-interactive)
- Local Shell via Windows ConPTY (PowerShell/Bash/Cmd)
- VT100/ANSI terminal rendering (owner-drawn, double-buffered)
- TTL script engine: send, sendln, wait, pause, timeout, if/while, messagebox
- Group execution: waitall, sendlnall, sendlngroup (Barrier sync)
- Run All / Run Group toolbar buttons
- SFTP file browser sidebar (SSH.NET SftpClient)
- PDU control via SNMP (pduconnect/pductrl commands)
- Settings: Terminal prefs, Shell config, PDU monitoring
- About page with changelog
- AppSettings persisted to %LocalAppData%\ETTerms\
- Dark theme throughout (KKTerm purple accent)

tools/scripts/test-echo.ttl

@@ -0,0 +1,22 @@
+; test-echo.ttl — 最簡單的收發測試
+; 適用：Serial loopback（TX 接 RX）或任何會回顯的連線
+; 送出的字會被回顯回來，wait 命中後寫進 log。
+
+prompt = '6000#'
+
+wait '6000 login:'
+sendln 'admin'
+wait 'Password: '
+sendln ''
+
+wait prompt
+sendln 'show version'
+
+wait prompt
+sendln 'show int b'
+
+wait prompt
+sendln 'show int b'
+
+
+messagebox 'Echo test done'