feat(studio): AR Electronics branding + Telemetría + Instalar J6412 tabs

ar_style.py — global QSS dark theme + QPalette matching the Flutter brand
  palette (navy #0D1B2A, electric blue #2563EB, glow #60B8FF). Single call:
  apply_ar_style(app).

app.py — applies AR style and window icon on startup.

main_window.py — complete rewrite of the layout:
  - Sidebar: AR logo (PNG), user/role display, capabilities list, version stamp
  - 5 tabs: Overview · ⚡ Flash ESP32 · 📋 Proyecto · 📡 Telemetría · 💾 Instalar J6412
  - Overview tab: rich-text guide with icons for each tab's purpose

telemetry_widget.py — live $PARP STATUS chart tab:
  - QSerialPort RX-only connection to AR-Concentrador (port selector + Refresh)
  - Python $PARP XOR-checksum parser (mirrors Dart ParpCodec)
  - _RollingChart: pure QPainter scrolling time-series, 60 s window, no
    external charting library
  - Heading + Setpoint on one chart; Rudder on a second chart
  - Live value strip shows Rumbo / Setpoint / Timón + mode label

installer_widget.py — J6412 USB image builder tab:
  - Vessel name + serial number (auto-generate or paste)
  - Optional CSV log path for CRM
  - App checkboxes (AR-ECDIS / AR-Autopilot / skip Flutter build)
  - Worker thread runs installer/build_usb.py with streamed log output
  - "Abrir dist/" button when build succeeds
  - RBAC gated: Engineer or Super Admin only

pyproject.toml — adds [installer] and [license-server] optional dep groups

AR_electronics — AR-Autopilot Project

pyproject.toml

@@ -44,11 +44,24 @@ dev = [
 ]
 # Studio GUI -- Sprint 2.5+. Heavy (~80 MB), kept optional so the core can
 # be installed in lean environments (CI, headless test bench).
+# PySide6 >= 6.6 includes QtSerialPort on all platforms — no extra dep needed.
 studio = [
     "PySide6>=6.6",
     "pyserial>=3.5",
     "platformio>=6.1",
 ]
+# Installer tooling — required on the developer's build machine.
+installer = [
+    "requests>=2.31",
+]
+# License server — deploy to arelectronics.com VPS.
+license-server = [
+    "fastapi>=0.111",
+    "uvicorn[standard]>=0.29",
+    "sqlalchemy>=2.0",
+    "pydantic>=2.7",
+    "python-dotenv>=1.0",
+]
 
 [project.urls]
 Homepage = "https://github.com/alro65/AR-Autopilot"