a2a-Market Stake Freeze

Build the rule engine shell for stake lock lifecycle in A2A transactions.

Current status: registration-first scaffold with explicit policy points.

Scope

• Lock stake when node accepts an intent or enters negotiation.
• Release or slash stake based on final outcome and policy.
• Keep stake decisions auditable for dispute resolution.

Suggested Project Layout

• app/domain/rules/stake_rules.py
• app/application/services/stake_service.py
• app/infrastructure/db/stake_repository.py
• app/infrastructure/tasks/stake_timeout_worker.py