progress logs behind CONFIG.debug, CONFIG.antialias + high-performance context, cheaper cloud sampling (skip far detail octave and redundant self-shading probe), brighter night contrails via CONFIG.flights.contrailNight, window.__flightDbg counters, real sun/moon by default

config.js

@@ -17,6 +17,7 @@
  *                    tile/DEM/Overpass origin, figure-eight centre
  *   renderScale      internal 3D resolution (0.2..1) with blocky upscale
  *   maxFps           scene frame cap (0 = free running)
+ *   antialias        MSAA on the WebGL framebuffer (true/false)
  *   weatherSim       ignore Open-Meteo and cycle the weather themes
  *   tiles            basemap/elevation cache behaviour + debug overlays
  *   ground           basemap style
@@ -51,7 +52,7 @@ window.CONFIG = {
     theme: 'ash',                 // 'ash' | 'nord' | 'gruvbox' (see window.THEMES)
     language: 'en',               // 'en', 'de' - keys of the i18n.js dictionaries
     timeFormat: 'DD. MMMM, YYYY ‒ HH:mm:SS',
-    debug: 0,                     // 1 = debug panel with the theme palette
+    debug: 0,                     // 1 = debug panel + progress logs in the console
     credits: true,                // false = hide the attribution line
     units: { temperature: 'C' },  // 'F' for Fahrenheit
 
@@ -67,6 +68,10 @@ window.CONFIG = {
     // Scene frame cap. All motion is time-based, so this only changes
     // smoothness, never speed. 0 = free running (vsync).
     maxFps: 30,
+    // MSAA on the WebGL framebuffer. Costs fill rate, and with renderScale
+    // below 1 the pixel blocks dominate anyway - set false if the scene is
+    // GPU bound. Read once at context creation, so a reload is needed.
+    antialias: true,
 
     // ------------------------------------------------------------------
     // Location
@@ -169,11 +174,16 @@ window.CONFIG = {
         wStrip: 1,
         // Contrails: contrailChance of the aircraft leaves a trail once
         // above contrailStartKm, visible for contrailLifeS seconds.
-        contrailChance: 0.85,
+        contrailChance: 1.00,
         contrailStartKm: 6,
         contrailLifeS: 300,
         contrailWidthM: 620,      // full trail width
         contrailFadeKm: 100,      // fully faded at this distance (ramp starts at 35 %)
+        // Night contrast: a physically scaled contrail is a faint grey thread
+        // that disappears at 4x pixel scale, so this is the night share of its
+        // opacity (0.34 was the old value) and it also drives the gain on the
+        // moon/star light. 0 = night contrails off, 1 = strongest.
+        contrailNight: 0.85,
         // Night strobes. Point size shrinks with distance but never below
         // lightPx and never above lightMaxPx for a jet directly overhead.
         // The white strobe is a double flash: two flashes blinkFlashS long,
@@ -301,11 +311,12 @@ window.CONFIG = {
     // east, culminates south, sets west) and the clock plus the sun/moon
     // tables follow the simulated date. false uses the real SunCalc positions.
     day: {
-        simulation: true,
-        cycleSeconds: 60,         // 60 s = one simulated day per minute
+        simulation: false,        // false = the real sun and moon (default)
+        cycleSeconds: 60,         // only used when simulation is true:
+                                  // 60 s = one simulated day per minute
         fixedTime: null           // 'HH:MM' or 0-24 freezes the sim clock
                                   // (clouds, traffic and flights keep moving)
-        // day: { simulation: false }   // real sun and moon
+        // day: { simulation: true, cycleSeconds: 60 }   // accelerated day
     },
 
     // ------------------------------------------------------------------