Revert "feat: migrate frontend to Astro + expand AI moderation + backend admin/runtime config"

This reverts commit d59b59a7a7.

services/frontend/src/hooks/useNotificationBadge.ts

@@ -1,31 +0,0 @@
-import { useCallback, useEffect, useRef, useState } from "react";
-
-/**
- * Tracks incoming moderation_alert events and maintains a badge counter.
- * Clears when the user navigates to the messages tab.
- */
-export function useNotificationBadge(activeTab: string) {
-  const [count, setCount] = useState(0);
-  const prevActiveTab = useRef(activeTab);
-
-  // Clear badge when user switches TO messages tab
-  useEffect(() => {
-    if (activeTab === "messages" && prevActiveTab.current !== "messages") {
-      setCount(0);
-    }
-    prevActiveTab.current = activeTab;
-  }, [activeTab]);
-
-  const increment = useCallback(() => {
-    setCount((c) => c + 1);
-  }, []);
-
-  // Listen for moderation_alert custom events
-  useEffect(() => {
-    const handler = () => increment();
-    window.addEventListener("moderation_alert", handler);
-    return () => window.removeEventListener("moderation_alert", handler);
-  }, [increment]);
-
-  return { count, clear: () => setCount(0) };
-}

services/frontend/src/hooks/useTheme.ts

@@ -1,77 +0,0 @@
-import { useCallback, useEffect, useMemo, useState } from "react";
-
-export type Theme = "light" | "dark";
-export type ThemeMode = Theme | "system";
-
-const THEME_STORAGE_KEY = "bete-dashboard-theme";
-
-function getSystemTheme(): Theme {
-  if (typeof window === "undefined") return "dark";
-  return window.matchMedia("(prefers-color-scheme: dark)").matches
-    ? "dark"
-    : "light";
-}
-
-function loadThemeMode(): ThemeMode {
-  try {
-    const stored = localStorage.getItem(THEME_STORAGE_KEY);
-    if (stored === "light" || stored === "dark" || stored === "system")
-      return stored;
-  } catch {
-    // ignore
-  }
-  return "system";
-}
-
-function resolveTheme(mode: ThemeMode): Theme {
-  return mode === "system" ? getSystemTheme() : mode;
-}
-
-function applyTheme(theme: Theme) {
-  const root = document.documentElement;
-  root.setAttribute("data-theme", theme);
-  // Also toggle Tailwind dark class for utility-based approach
-  if (theme === "dark") {
-    root.classList.add("dark");
-  } else {
-    root.classList.remove("dark");
-  }
-}
-
-export function useTheme() {
-  const [mode, setModeState] = useState<ThemeMode>(loadThemeMode);
-
-  const theme = useMemo(() => resolveTheme(mode), [mode]);
-
-  const setMode = useCallback((newMode: ThemeMode) => {
-    setModeState(newMode);
-    try {
-      localStorage.setItem(THEME_STORAGE_KEY, newMode);
-    } catch {
-      // ignore quota errors
-    }
-  }, []);
-
-  const toggle = useCallback(() => {
-    setMode(theme === "dark" ? "light" : "dark");
-  }, [theme, setMode]);
-
-  // Apply theme on mount and when mode changes
-  useEffect(() => {
-    applyTheme(theme);
-  }, [theme]);
-
-  // Listen for system preference changes when in "system" mode
-  useEffect(() => {
-    if (mode !== "system") return;
-
-    const mq = window.matchMedia("(prefers-color-scheme: dark)");
-    const handler = () => {
-      applyTheme(resolveTheme("system"));
-    };
-    mq.addEventListener("change", handler);
-    return () => mq.removeEventListener("change", handler);
-  }, [mode]);
-
-  return { theme, mode, setMode, toggle, isDark: theme === "dark" };
-}