Ship Meshtastic Chat UX, embedded Infonet/SHELL panels, and Docker dev polish.

Rename Mesh Chat to Meshtastic Chat, embed the Infonet terminal with Arti/Tor warmup, improve the agent shell PTY (git in the backend image, operator PATH), and add docker-compose.override for local image builds. Gitignore Hermes Agent runtime installs.

Co-authored-by: Cursor <cursoragent@cursor.com>

frontend/src/i18n/translations/en.json

@@ -240,7 +240,7 @@
     "disconnected": "Disconnected"
   },
   "meshChat": {
-    "title": "Mesh Chat",
+    "title": "Meshtastic Chat",
     "infonet": "Infonet",
     "meshtastic": "Meshtastic",
     "deadDrop": "Dead Drop",

frontend/src/i18n/translations/fr.json

@@ -240,7 +240,7 @@
     "disconnected": "Déconnecté"
   },
   "meshChat": {
-    "title": "Chat Mesh",
+    "title": "Chat Meshtastic",
     "infonet": "Infonet",
     "meshtastic": "Meshtastic",
     "deadDrop": "Dead Drop",

frontend/src/i18n/translations/zh-CN.json

@@ -240,7 +240,7 @@
     "disconnected": "未连接"
   },
   "meshChat": {
-    "title": "Mesh 聊天",
+    "title": "Meshtastic 聊天",
     "infonet": "Infonet",
     "meshtastic": "Meshtastic",
     "deadDrop": "死信箱",