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>

docs/API.md

@@ -2562,3 +2562,64 @@ query GetDocument($id: Int!) {
 }
 ```
 Variables: `{ "id": 42 }`
+
+## System Reset
+
+Admin-only endpoints for resetting the system to a clean state.  Requires `ENABLE_FACTORY_RESET=True`.
+
+### GET /api/admin/system-reset/status
+
+Check whether the system reset feature is enabled.
+
+**Response (200):**
+```json
+{
+  "enabled": true,
+  "factory_reset_on_startup": false
+}
+```
+
+### POST /api/admin/system-reset/full
+
+Wipe all user data (database + work-files).
+
+**Request:**
+```json
+{
+  "confirmation": "DELETE"
+}
+```
+
+**Response (200):**
+```json
+{
+  "status": "ok",
+  "result": {
+    "database": { "files": 42, "processing_logs": 100 },
+    "filesystem": { "deleted_dirs": 5, "deleted_files": 12 }
+  }
+}
+```
+
+### POST /api/admin/system-reset/reimport
+
+Move original files to a reimport folder, wipe everything, and configure the reimport folder as a watch folder for re-ingestion.
+
+**Request:**
+```json
+{
+  "confirmation": "REIMPORT"
+}
+```
+
+**Response (200):**
+```json
+{
+  "status": "ok",
+  "result": {
+    "database": { "files": 42 },
+    "filesystem": { "deleted_dirs": 5, "deleted_files": 12 },
+    "reimport": { "files_moved": 42, "reimport_folder": "/workdir/reimport" }
+  }
+}
+```