v0.9.5: The Voltron Update — modular architecture, stable IDs, parallelized boot

- Parallelized startup (60s → 15s) via ThreadPoolExecutor
- Adaptive polling engine with ETag caching (no more bbox interrupts)
- useCallback optimization for interpolation functions
- Sliding LAYERS/INTEL edge panels replace bulky Record Panel
- Modular fetcher architecture (flights, geo, infrastructure, financial, earth_observation)
- Stable entity IDs for GDELT & News popups (PR #63, credit @csysp)
- Admin auth (X-Admin-Key), rate limiting (slowapi), auto-updater
- Docker Swarm secrets support, env_check.py validation
- 85+ vitest tests, CI pipeline, geoJSON builder extraction
- Server-side viewport bbox filtering reduces payloads 80%+

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Former-commit-id: f2883150b5bc78ebc139d89cc966a76f7d7c0408

frontend/src/lib/DashboardDataContext.tsx

@@ -1,9 +1,10 @@
 "use client";
 
 import React, { createContext, useContext } from "react";
+import type { DashboardData } from "@/types/dashboard";
 
 interface DashboardDataContextValue {
-    data: any;
+    data: DashboardData;
     selectedEntity: { id: string | number; type: string; extra?: any } | null;
     setSelectedEntity: (entity: { id: string | number; type: string; extra?: any } | null) => void;
 }

frontend/src/lib/ThemeContext.tsx

@@ -3,14 +3,23 @@
 import React, { createContext, useContext, useState, useEffect } from "react";
 
 type Theme = "dark" | "light";
+type HudColor = "cyan" | "matrix";
 
-const ThemeContext = createContext<{ theme: Theme; toggleTheme: () => void }>({
+const ThemeContext = createContext<{
+  theme: Theme;
+  toggleTheme: () => void;
+  hudColor: HudColor;
+  cycleHudColor: () => void;
+}>({
   theme: "dark",
   toggleTheme: () => {},
+  hudColor: "cyan",
+  cycleHudColor: () => {},
 });
 
 export function ThemeProvider({ children }: { children: React.ReactNode }) {
   const [theme, setTheme] = useState<Theme>("dark");
+  const [hudColor, setHudColor] = useState<HudColor>("cyan");
 
   useEffect(() => {
     const saved = localStorage.getItem("sb-theme") as Theme | null;
@@ -18,6 +27,11 @@ export function ThemeProvider({ children }: { children: React.ReactNode }) {
       setTheme(saved);
       document.documentElement.setAttribute("data-theme", saved);
     }
+    const savedHud = localStorage.getItem("sb-hud-color") as HudColor | null;
+    if (savedHud === "cyan" || savedHud === "matrix") {
+      setHudColor(savedHud);
+      document.documentElement.setAttribute("data-hud", savedHud);
+    }
   }, []);
 
   const toggleTheme = () => {
@@ -27,8 +41,15 @@ export function ThemeProvider({ children }: { children: React.ReactNode }) {
     document.documentElement.setAttribute("data-theme", next);
   };
 
+  const cycleHudColor = () => {
+    const next = hudColor === "cyan" ? "matrix" : "cyan";
+    setHudColor(next);
+    localStorage.setItem("sb-hud-color", next);
+    document.documentElement.setAttribute("data-hud", next);
+  };
+
   return (
-    <ThemeContext.Provider value={{ theme, toggleTheme }}>
+    <ThemeContext.Provider value={{ theme, toggleTheme, hudColor, cycleHudColor }}>
       {children}
     </ThemeContext.Provider>
   );

frontend/src/lib/constants.ts

@@ -0,0 +1,21 @@
+// ─── ShadowBroker Frontend Constants ────────────────────────────────────────
+// Centralized magic numbers. Import from here instead of hardcoding.
+
+// ─── Data Polling ───────────────────────────────────────────────────────────
+export const POLL_FAST_STARTUP_MS = 3000;
+export const POLL_FAST_STEADY_MS = 15000;
+export const POLL_SLOW_STARTUP_MS = 5000;
+export const POLL_SLOW_STEADY_MS = 120000;
+
+// ─── Reverse Geocoding ──────────────────────────────────────────────────────
+export const GEOCODE_THROTTLE_MS = 1500;
+export const GEOCODE_DISTANCE_THRESHOLD = 0.05; // ~5km in degrees
+export const GEOCODE_CACHE_SIZE = 500;
+export const NOMINATIM_DEBOUNCE_MS = 350;
+
+// ─── Map Interpolation ─────────────────────────────────────────────────────
+export const INTERP_TICK_MS = 1000;
+
+// ─── News/Alert Layout ──────────────────────────────────────────────────────
+export const ALERT_BOX_WIDTH_PX = 180;
+export const ALERT_MAX_OFFSET_PX = 350;