Move remote MCP ingest uploads from the vault inbox to the MCP runtime staging area so uploaded files are not accepted into the vault before wiki-ingest processes them.
Reject ingest runtime roots that resolve inside the vault, and update the generated OpenCode prompt plus docs to describe uploads as temporary staging inputs.
Validation: python3 -m unittest discover -v; python3 -m py_compile obsidian_wiki/mcp_ingest.py tests/test_mcp_ingest.py; git diff --check