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>

runtime/tools/mcp/runtime.py

@@ -25,7 +25,7 @@ class McpProcessRuntime:
     def _build_runtime_env(env_allowlist: list[str] | None) -> dict[str, str] | None:
         if env_allowlist is None:
             return None
-        from oclaw.runtime.operations.mcp_env import mcp_local_env_merged
+        from runtime.operations.mcp_env import mcp_local_env_merged
 
         keep_keys = {"PATH", "PATHEXT", "SYSTEMROOT", "WINDIR", "COMSPEC", "TEMP", "TMP", "HOME", "USERPROFILE", "APPDATA", "LOCALAPPDATA", "PROGRAMDATA", "PROGRAMFILES", "PROGRAMFILES(X86)", "SYSTEMDRIVE"}
         env: dict[str, str] = {}