feat: ja4-platform monorepo — 5 services unified, tests & RPM builds standardized

Services:
- ja4sentinel: TLS/JA4 fingerprint capture daemon (Go, libpcap)
- logcorrelator: JA4 log correlation engine (Go, ClickHouse)
- mod_reqin_log: Apache module (C, JSON request logging)
- bot_detector: ML bot detection pipeline (Python)
- dashboard: FastAPI/Streamlit analytics UI (Python)

Shared libraries:
- shared/go/ja4common: logger, config, shutdown, ipfilter (Go module)
- shared/python/ja4_common: ClickHouseClient, ClickHouseSettings (Python package)
- shared/clickhouse/: canonical SQL migrations (10 files)

Build & packaging:
- Unified 3-stage Dockerfile.package for Go RPMs (el8/el9/el10)
- go.work workspace linking sentinel, correlator, ja4common
- Makefile with test-all, build-all, rpm-* targets

Fixes applied:
- go.work: 1.21 → 1.24.6 (required by sentinel)
- correlator Dockerfiles: golang:1.21 → golang:1.24
- replace directives in go.mod for ja4common local path
- pyproject.toml: setuptools.backends → setuptools.build_meta
- Removed static libpcap linking (unavailable on Rocky 9)
- Fixed data races in output/writers_test.go (sync.Mutex + atomic.Int32)
- Rewrote corrupted test files (logger_test.go × 2)

Test coverage:
- correlator: 67.1% total (unixsocket 80.5%, config 91.7%, app 83.3%, multi 87.7%, stdout 100%)
- sentinel: all 10 packages pass (api, capture, config, fingerprint, ipfilter, logging, output, tlsparse)

Documentation:
- README.md + docs/ (architecture, development, 5 services, shared libs, DB schema & migrations)

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

services/dashboard/frontend/src/ThemeContext.tsx

@@ -0,0 +1,74 @@
+import { createContext, useContext, useEffect, useState } from 'react';
+import { CONFIG } from './config';
+
+export type Theme = 'dark' | 'light' | 'auto';
+
+interface ThemeContextValue {
+  theme: Theme;
+  resolved: 'dark' | 'light';
+  setTheme: (t: Theme) => void;
+}
+
+const ThemeContext = createContext<ThemeContextValue>({
+  theme: CONFIG.DEFAULT_THEME,
+  resolved: 'dark',
+  setTheme: () => {},
+});
+
+const STORAGE_KEY = CONFIG.THEME_STORAGE_KEY;
+
+function resolveTheme(theme: Theme): 'dark' | 'light' {
+  if (theme === 'auto') {
+    return window.matchMedia('(prefers-color-scheme: light)').matches ? 'light' : 'dark';
+  }
+  return theme;
+}
+
+export function ThemeProvider({ children }: { children: React.ReactNode }) {
+  const [theme, setThemeState] = useState<Theme>(() => {
+    const stored = localStorage.getItem(STORAGE_KEY) as Theme | null;
+    return stored ?? CONFIG.DEFAULT_THEME;
+  });
+
+  const [resolved, setResolved] = useState<'dark' | 'light'>(() => resolveTheme(
+    (localStorage.getItem(STORAGE_KEY) as Theme | null) ?? CONFIG.DEFAULT_THEME
+  ));
+
+  const applyTheme = (t: Theme) => {
+    const r = resolveTheme(t);
+    setResolved(r);
+    document.documentElement.setAttribute('data-theme', r);
+  };
+
+  const setTheme = (t: Theme) => {
+    setThemeState(t);
+    localStorage.setItem(STORAGE_KEY, t);
+    applyTheme(t);
+  };
+
+  // Apply on mount
+  useEffect(() => {
+    applyTheme(theme);
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  // Watch system preference changes when in 'auto' mode
+  useEffect(() => {
+    if (theme !== 'auto') return;
+    const mq = window.matchMedia('(prefers-color-scheme: light)');
+    const handler = () => applyTheme('auto');
+    mq.addEventListener('change', handler);
+    return () => mq.removeEventListener('change', handler);
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [theme]);
+
+  return (
+    <ThemeContext.Provider value={{ theme, resolved, setTheme }}>
+      {children}
+    </ThemeContext.Provider>
+  );
+}
+
+export function useTheme() {
+  return useContext(ThemeContext);
+}