Project notes for the Agent SDK data-generation agent (#522).

These files are synthetic and secret-free. They exist only to give the
representative SDK agent real targets for Read / Grep / Glob / Bash so the
captured JSONL exercises a realistic tool-use surface.

MARKER: the agent is asked to grep for this line.

Roadmap thoughts:
- the corpus must be trivially anonymizable
- no network, no MCP, no real credentials anywhere
- the agent's answer does not matter; only the bytes it emits matter
