The concurrent rebrand left src/backend/base/langflow alive with 34 UNIQUE
unmigrated files (a flow_events service, the WatsonX-Orchestrate deployment
adapter, the flow_version_deployment_attachment DB model + tests) that flow/
never received, plus 152 files still importing `langflow` and 137 more with
`langflow.<mod>` string module paths (import_module/monkeypatch targets).
- Migrated all 34 unique files langflow/ -> flow/ at matching paths (dropped
langflow/api/v1/__init__.py, superseded by flow/'s).
- Deleted the emptied src/backend/base/langflow package.
- Repointed every `from langflow`/`import langflow` (152 files) and every
`langflow.<mod>` string path (137 files) to `flow`.
Verify: 0 `from/import langflow` and 0 `langflow.` module refs remain in *.py;
compileall of src/backend/base/flow + src/lfx/src parses clean. Runtime import
resolution + the uv test suite is the CI gate (the module tree is now internally
consistent: every moved model/service resolves under flow/).
Remaining (follow-on commits): runtime identifier strings (MCP server names),
the langflow-base/langflow-sdk distribution names, and the docs corpus.
zeekay
