refactor: root-package imports (svc/runtime/interfaces) and fix PYTHONPATH

- Rename platform/ to svc/ to avoid shadowing stdlib platform.
- Replace from oclaw.* with from svc/runtime/interfaces; update -m CLI paths.
- tests/conftest: prepend repo root to sys.path (no parent-folder package name).
- CI: paths and offline_eval script under repo root.
- Ops scripts: PYTHONPATH must be repo root for python -m runtime.* (fixes gateway/WhatsApp sidecar startup).
- Fix default oclaw.json path in tabular/file attachment limits; stabilize attachment test config.

Co-authored-by: Cursor <cursoragent@cursor.com>

tests/test_admin_skills_api.py

@@ -10,8 +10,8 @@ from unittest.mock import patch
 
 from fastapi.testclient import TestClient
 
-from oclaw.interfaces.http.fastapi_app import create_app
-from oclaw.platform.persistence.sqlite_store import SqliteStore
+from interfaces.http.fastapi_app import create_app
+from svc.persistence.sqlite_store import SqliteStore
 
 
 class AdminSkillsApiTests(unittest.TestCase):
@@ -311,7 +311,7 @@ class AdminSkillsApiTests(unittest.TestCase):
                 _ = (slug, version)
                 return z.resolve().as_uri(), "1.0.0"
 
-        with patch("oclaw.interfaces.admin.skills_api.get_market_adapter", return_value=_FakeAdapter()):
+        with patch("interfaces.admin.skills_api.get_market_adapter", return_value=_FakeAdapter()):
             r = self.client.post(
                 "/admin/api/skills/market/install",
                 json={"slug": "owner/demo3"},