Add Attio pipeline export fast path

[fineas-bot]

Adds a generic Attio pipeline export fast path for common CRM list/filter prompts.

What changed:

• Adds paginated query_all_records and concurrent read-only get_records helpers.
• Adds attio pipeline-export for owner/stage/source/channel/platform/contact-field pipeline exports.
• Keeps the implementation generic: Sasha-style source lists are just one parameterized source/attribute query, not a hardcoded workflow.

Validation:

• python3 -m py_compile tools/business/attio/client.py tools/business/attio/cli.py
• git diff --check -- tools/business/attio/client.py tools/business/attio/cli.py

Benchmark evidence from a live sandbox smoke test before PR creation:

• Generic owner+stage+source+has-phone export scanned 250 records, found 88 matches, returned 10 rows in ~13.9s with ~8KB shaped JSON.
• Historical lead-list/export Attio agent runs were ~268s median and up to ~547s max, mostly due to repeated raw Attio JSON/tool loops.