fix: resolve merge conflicts with main branch

Merge origin/main into feature branch, resolving 18 conflicts:
- app/api/__init__.py: add classification_rules_router alongside system_reset_router
- app/config.py: keep system reset settings from main
- app/models.py: keep ClassificationRuleModel alongside main's models
- app/utils/settings_service.py: keep factory reset settings from main
- app/views/__init__.py: keep system_reset_router from main
- tests/conftest.py: add ClassificationRuleModel import
- migrations/env.py: add ClassificationRuleModel import
- .env.demo, docs/*, frontend/*, mobile/*: keep additions from main
- BUILD_DATE, GIT_SHA, RUNTIME_INFO, VERSION, CHANGELOG.md: accept main's version

Co-authored-by: christianlouis <361235+christianlouis@users.noreply.github.com>

mobile/app/_layout.tsx

@@ -118,6 +118,7 @@ function AuthGuard() {
 
   return (
     <Stack screenOptions={{ headerShown: false }}>
+      <Stack.Screen name="index" />
       <Stack.Screen name="(auth)" />
       <Stack.Screen name="(tabs)" />
     </Stack>

mobile/app/index.tsx

@@ -0,0 +1,17 @@
+/**
+ * Root index route – redirects to the auth flow on launch.
+ *
+ * expo-router renders this when the "/" route is matched (i.e. on cold start).
+ * Without this file, a stale default scaffold page ("Hello World") can appear
+ * if one was left behind by a previous build or Expo CLI scaffolding.
+ *
+ * The redirect targets the (auth) group; the AuthGuard in _layout.tsx will
+ * immediately forward authenticated users to (tabs).
+ */
+
+import { Redirect } from "expo-router";
+import React from "react";
+
+export default function RootIndex() {
+  return <Redirect href="/(auth)/" />;
+}