docs: sync outdated references and add audit-log guide
- architecture.md: rewrite to reflect current plugin-based structure
(removed market/discovery/ir/generator/compat, added helpers/plugin/audit/pat)
- automation.md: update task routing and repository map to current packages
- command-index.md: fix source citation (internal/plugin replaces removed compat pipeline)
- connect-daemon-service.md: update command path from 'dws devapp robot connect'
to 'dws dev connect' (7 occurrences + launchd plist args)
- audit-log.md: new doc covering event format, env vars, CLI commands,
hash chain verification, remote forwarding, and redaction levels