meteor showers: add debug shower and known radiant streaks

config.js

@@ -147,6 +147,58 @@ window.CONFIG = {
         // emergencyVehicles: { colorVariation: 0.25, ledColor: [0.02, 0.18, 1.0], halogenColor: [0.70, 0.82, 1.0] }
     },
 
+    // ------------------------------------------------------------------
+    // Meteor showers
+    // ------------------------------------------------------------------
+    // Known meteor showers are rendered as short night-sky streaks whose
+    // backward extension points toward the shower radiant. The debug shower
+    // is a temporary test shower for a fixed local start time.
+    meteorShowers: {
+        enabled: true,
+        brightness: 1.0,
+        maxActive: 12,
+        rate: 0.25,             // meteors per second across all active showers
+        speedDegPerSec: 14,     // apparent angular speed
+        lengthDeg: 18,          // trail length in degrees
+        trailPoints: 14,        // point sprites per trail
+        pointSize: 10,          // base point size in pixels
+        nightOnly: true,
+        colors: [
+            [1.00, 0.96, 0.88],
+            [0.72, 1.00, 0.86],
+            [1.00, 0.72, 0.42]
+        ],
+        debug: {
+            enabled: true,
+            name: 'Debug Shower',
+            startAt: '2026-10-13T07:00:00',
+            durationMin: 10,
+            rate: 1.2,
+            maxActive: 18,
+            radiant: { raH: 3.2, decDeg: 58 },
+            lengthDeg: 22,
+            speedDegPerSec: 18,
+            brightness: 2.4,
+            nightOnly: false
+        },
+        showers: [
+            { name: 'Quadrantids', startMonth: 1, startDay: 1, peakMonth: 1, peakDay: 3, endMonth: 1, endDay: 15, zhr: 110, raH: 15.4, decDeg: 49 },
+            { name: 'Lyrids', startMonth: 4, startDay: 16, peakMonth: 4, peakDay: 22, endMonth: 4, endDay: 25, zhr: 18, raH: 18.1, decDeg: 34 },
+            { name: 'Eta Aquariids', startMonth: 4, startDay: 19, peakMonth: 5, peakDay: 6, endMonth: 5, endDay: 28, zhr: 50, raH: 22.5, decDeg: -1 },
+            { name: 'Delta Aquariids', startMonth: 7, startDay: 15, peakMonth: 7, peakDay: 30, endMonth: 8, endDay: 18, zhr: 25, raH: 22.8, decDeg: -16 },
+            { name: 'Perseids', startMonth: 7, startDay: 17, peakMonth: 8, peakDay: 12, endMonth: 8, endDay: 24, zhr: 100, raH: 3.2, decDeg: 58 },
+            { name: 'Draconids', startMonth: 10, startDay: 6, peakMonth: 10, peakDay: 8, endMonth: 10, endDay: 10, zhr: 10, raH: 17.5, decDeg: 54 },
+            { name: 'Orionids', startMonth: 10, startDay: 2, peakMonth: 10, peakDay: 21, endMonth: 11, endDay: 7, zhr: 20, raH: 6.4, decDeg: 15 },
+            { name: 'Taurids', startMonth: 10, startDay: 10, peakMonth: 11, peakDay: 5, endMonth: 12, endDay: 10, zhr: 5, raH: 3.9, decDeg: 21 },
+            { name: 'Leonids', startMonth: 11, startDay: 6, peakMonth: 11, peakDay: 17, endMonth: 11, endDay: 30, zhr: 15, raH: 10.2, decDeg: 22 },
+            { name: 'Geminids', startMonth: 12, startDay: 4, peakMonth: 12, peakDay: 14, endMonth: 12, endDay: 17, zhr: 120, raH: 7.5, decDeg: 33 },
+            { name: 'Ursids', startMonth: 12, startDay: 17, peakMonth: 12, peakDay: 22, endMonth: 12, endDay: 26, zhr: 10, raH: 14.5, decDeg: 75 }
+        ]
+        // meteorShowers: { enabled: false }
+        // meteorShowers: { debug: { enabled: false } }
+        // meteorShowers: { debug: { startAt: '2026-10-13T07:00:00', durationMin: 10, rate: 2.0 } }
+    },
+
     // ------------------------------------------------------------------
     // Weather effects
     // ------------------------------------------------------------------