feat(terminal-dashboard): add session name (tag) field for grouping

- Add tag/name input field to CliConfigModal with auto-generation
- Auto-generate format: {tool}-{HHmmss} (e.g., gemini-143052)
- Add regenerate button for quick name changes
- Add i18n keys for new fields (en/zh)

Sessions are now grouped by tag in the sidebar for better organization.

ccw/frontend/src/locales/en/terminal-dashboard.json

@@ -90,6 +90,10 @@
   "cliConfig": {
     "title": "Create CLI Session",
     "description": "Configure tool, model, mode, shell, and working directory.",
+    "tag": "Session Name",
+    "tagPlaceholder": "e.g., gemini-143052",
+    "tagHint": "Auto-generated as {tool}-{time}. Used for grouping sessions.",
+    "regenerateTag": "Regenerate name",
     "tool": "Tool",
     "model": "Model",
     "modelAuto": "Auto",