Completes the rebrand per direction: LANGFLOW_/LANGFLOW -> FLOW_/FLOW (env vars,
headers), langflow_ -> flow_ (settings fields, local vars), camelCase identifiers
(LangflowClient/Logo/HTTPError, builtWithLangflow, getLangflowDesktop) -> Flow*,
and all remaining bare tokens. Fixed the identifier-space hazard (Langflow ->
'Hanzo Flow' is prose-only; in code it collapses to Flow so no identifier gains a
space). compileall of flow + lfx is clean.
Repo-wide langflow now = 4, all the protected MIT attribution to langflow-ai/
langflow in README (legally required; deliberately preserved).
Breaking (per no-backwards-compat / forward-perfection): the LANGFLOW_* env-var
prefix is now FLOW_* — deployments must update their env. CI's uv + frontend
build is the runtime gate.
Docs corpus (Langflow->Hanzo Flow, upstream URLs langflow-ai/langflow->hanzoai/
flow, docs.langflow.org->docs.hanzo.ai), starter-project template help-URLs, CI
workflows, and test files. Remaining 'langflow' repo-wide is now dominated by
LANGFLOW_* env-var names + langflow_ settings fields — the config-boundary layer
deliberately preserved pending a coordinated FLOW_/HANZO_ alias-with-fallback
(renaming them blind breaks every deployment).
zeekay
