feat: lightweight Docker image without AI/ML tools (:lite tag)

Closes #1

apps/web/src/stores/settings-store.ts

@@ -0,0 +1,41 @@
+import { create } from "zustand";
+import { apiGet } from "@/lib/api";
+
+interface SettingsState {
+  variant: "full" | "lite";
+  variantUnavailableTools: string[];
+  disabledTools: string[];
+  experimentalEnabled: boolean;
+  loaded: boolean;
+  fetch: () => Promise<void>;
+}
+
+export const useSettingsStore = create<SettingsState>((set, get) => ({
+  variant: "full",
+  variantUnavailableTools: [],
+  disabledTools: [],
+  experimentalEnabled: false,
+  loaded: false,
+
+  fetch: async () => {
+    if (get().loaded) return;
+    try {
+      const data = await apiGet<{
+        settings: Record<string, string>;
+        variant: "full" | "lite";
+        variantUnavailableTools: string[];
+      }>("/v1/settings");
+
+      set({
+        variant: data.variant ?? "full",
+        variantUnavailableTools: data.variantUnavailableTools ?? [],
+        disabledTools: data.settings.disabledTools ? JSON.parse(data.settings.disabledTools) : [],
+        experimentalEnabled: data.settings.enableExperimentalTools === "true",
+        loaded: true,
+      });
+    } catch {
+      // Settings fetch failed - default to full with no disabled tools
+      set({ loaded: true });
+    }
+  },
+}));