feat: add inactive Outlook warning-draft workflow scaffold

[Jdelg718]

Summary

• Adds Phase 17 inactive/manual n8n Outlook warning-draft scaffold.
• Keeps connected workflow path to sample input, validation/dedupe/emergency-stop, and safety summary only.
• Adds disabled/unconnected Microsoft Graph createReply placeholder for future operator-owned sandbox rehearsal.
• Extends validator and tests for no credentials, no send, no mailbox mutation, inactive/manual-only behavior.

Safety Boundaries

• active=false, manual trigger only.
• Emergency stop defaults on and blocked status is preserved.
• No OAuth implementation.
• No credentials or tokens.
• No send, delete, move, archive, mark read/unread, rules, contacts, or settings mutation.
• Graph placeholder is disabled and unconnected.

Reviews

• Rex: PASS.
• Gus: initially blocked emergency-stop summary semantics; fixed and re-reviewed PASS.

Verification

• python3 scripts/validate_n8n_workflow_exports.py
• python3 -m py_compile outreach_filter.py botfucker/*.py scripts/validate_n8n_workflow_exports.py
• python3 -m unittest discover -s tests -v