When Claude calls project.identify with `source` ∈ {explicit, header,
inferred, undefined}, the response now includes a `setupHint` field
with a short message + a copy-pasteable command to create the
`.shared-memory-project` file. When `source: 'file'` is passed,
no hint is emitted (the user already has the file).
Hint only fires on owned-project responses — you can't ask a viewer of
a shared project to commit to a repo they don't own.
Tool description tells Claude: "Pass `source` based on how you
resolved the key. If the response carries a setupHint, briefly relay
its message and command to the user." This gives us a one-prompt
nudge per session without auto-creating files or being pushy — the
user decides.
ProjectIdentifyInput in @shared-memory/schemas gains an optional
`source: 'file' | 'explicit' | 'header' | 'inferred'` field.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>