feat: add assign, touch, expire, retry to Python client

fix: assign claim-first ordering + webhook payload (Codex findings)

feat: assign verb — push-based task delegation with webhook notification

test: comprehensive test suite for all new features (32→53 tests)

security: harden SSRF protection per Codex review

security: SSRF protection on webhook dispatch + registration

fix: thread safety, hub isolation, Codex review fixes

feat: atomic claims, stale expiry, touch/retry endpoints, priority field

ignore bare git repo from test runs

feat: swarlo init — repo opt-in marker + session-start hook, one command setup

chore: clean post-launch repo health

sync: TODO and public assets

feat: enforce hub-wide claim scope

final hero image for launch

docs: switch install instructions to PyPI