Citation X cockpit profile: full Primus 2000 suite (PFD/MFD/EICAS/AP/RMU)

Add a switchable cockpit-profile selector (Garmin G1000 / Cessna Citation X /
GA steam) and recreate the Citation X Honeywell Primus 2000 avionics line-for-
line from the X-Plane Citation X + FMS manuals:

- CitPFD: attitude w/ FD command bars, speed tape (Vmo barber-pole, Vfe, low-
  speed red/amber bands), AOA index, altitude tape + trend, VSI, round HSI with
  CDI/course pointer + VOR/ADF bearing pointers, radar altimeter, minimums,
  STD/BARO/CRS/HDG bezel.
- CitEICAS: twin FAN%/ITT bar gauges, OIL °C/PSI, FUEL (flow/qty PPH·LBS),
  ELECTRICAL, HYDRAULICS, slat chevron, STAB trim, FLAPS, CAS message stack,
  softkeys NORM/FUEL-HYD/ELEC/CTRL-POS/ENG + control-position overlay.
- CitMFD: Honeywell heading-up arc map, FMS route (magenta active/white future),
  TCAS, terrain/WX, range arc, ETE/SAT/TAS/GSPD block, clock + ET/FT timer,
  V-SPEEDS reference card, MFD-setup overlays (TRAFFIC/TERRAIN/APTS/VOR).
- CitAP: HDG/NAV/APP/BC · ALT/VNAV/BANK/STBY · FLC/C-O/VS · pitch wheel ·
  AP/YD/M-TRIM/PFD-SEL, FMA bar + lamps from per-mode *_status datarefs.
- CitRMU: COM/NAV active+standby tuning, transponder, ADF, TCAS range/mode,
  IDENT + Nav Source Selector (NAV1/2/FMS, VOR/ADF/FMS bearing source).

Integration: all avionics stream live via the X-Plane Web API (new datarefs for
N1/N2/ITT, radar-alt, AOA, hydraulics, trim, flaps/slats/gear, control
positions, ADF, mach, yaw-damper); the existing fms-sync.lua drives the
Citation's built-in FMS (aircraft-agnostic XPLM FMS SDK). Demo seeds added so
every panel renders offline. Verified headless via Playwright (no console
errors; G1000/GA profiles unaffected).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

server/bridge.js

@@ -337,6 +337,18 @@ function startDemo() {
       { lat: 47.7, lon: -122.0, r: 8, lvl: 2 }, { lat: 47.75, lon: -121.9, r: 5, lvl: 3 },
       { lat: 47.2, lon: -122.6, r: 10, lvl: 1 }, { lat: 47.25, lon: -122.5, r: 6, lvl: 2 },
     ],
+
+    // --- Citation X demo (twin turbofan @ FL280 cruise) ---
+    n1: [88.4, 88.1], n2: [94.6, 94.5], itt: [702, 698],
+    radioAlt: 5500, mach: 0.74, aoa: 2.4,
+    adf1Brg: 135, adf2Brg: 295, adf1: 375, adf2: 290,
+    hydPress: [3120, 3120], elevTrim: -0.25, flapRatio: 0, flapDeploy: 0,
+    slatRatio: 0, gearHandle: 0, gearDeploy: [0, 0, 0], speedbrake: 0, parkBrake: 0,
+    ailDefl: 0.04, elevDefl: -0.08, rudDefl: 0.02,
+    battVolt: [28.0, 27.8], battTemp: [24, 24], ydOn: 1,
+    // override the GA single-engine arrays with twin-jet values
+    oilTemp: [88, 87], oilPress: [52, 53], fuelFlow: [0.366, 0.364], fuelQty: [1500, 1500],
+    egt: [702, 698], volts: [28.0, 27.8], amps: [-2, -2], genAmps: [120, 118],
   });
   // a sample plan so the map/FMS show something in demo mode
   fp.setPlan({ name: 'DEMO', waypoints: [