fix: merge main into feature branch - resolve all 18 conflicts cleanly

Merges origin/main (v0.155.0) into the classification feature branch,
resolving all 18 conflicted files by accepting main's version and
re-applying only classification-specific additions:

- Renumber migration from 037 to 038 (chains from 037_user_sessions)
- Re-add ClassificationRuleModel to models.py, env.py, conftest.py
- Re-add classification_rules_router to api/__init__.py
- All session management, QR auth, and devices code preserved from main

Migration chain validated. 62 classification tests pass.

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

app/views/devices.py

@@ -0,0 +1,25 @@
+"""View route for the Devices management page.
+
+Renders the ``devices.html`` template where users can see their registered
+mobile devices, mobile API tokens (created via the mobile SSO flow or QR
+code login), and revoke access per-device.
+"""
+
+import logging
+
+from fastapi import APIRouter, Request
+
+from app.views.base import require_login, templates
+
+logger = logging.getLogger(__name__)
+router = APIRouter()
+
+
+@router.get("/devices", include_in_schema=False)
+@require_login
+async def devices_page(request: Request):
+    """Render the Devices management page."""
+    return templates.TemplateResponse(
+        "devices.html",
+        {"request": request, "page_title": "Devices"},
+    )