Standalone CLI + MCP server for capturing root-cause analyses, sanitizing evidence, and publishing safe, idempotent "why cases" to aihangout.ai.

• Default mode (recommended): --target outbox writes to .why-engine/outbox/<idempotencyKey>.json with dedupe via ledger.
• Secrets present: outbox always writes a stub-only record (hashes + metadata only) and blocks API publish.
• API publish: use --target api or --target both with --dry-run true first; require --problem-id initially to avoid creating new problems by accident.
• History: optional --keep-history writes .why-engine/outbox/history/<idempotencyKey>-<timestamp>.json.