Add Simulation Mode for Local Testing Without ETH Cost

[oxvoidmain]

Currently, interacting with Freysa on-chain incurs a cost due to the Ethereum-based message submission system. This limits the ability for developers, researchers, or contributors to test prompts, debug interactions, or explore the decision logic of the agent.

Proposal: Introduce a simulation mode or local replica that mirrors Freysa’s logic without actual on-chain interaction. This mode would:

• Allow messages to be submitted via CLI or web UI.
• Mimic the agent’s core logic and output decisions without signing transactions or enforcing financial constraints.
• Be clearly marked as non-production and read-only, avoiding key exposure or misrepresentation of final behavior.

Benefits:

• Encourages experimentation and better understanding of the agent’s behavior.
• Enables testing of prompt safety and adversarial boundaries in a sandboxed environment.
• Makes the project more accessible to contributors and educators.

Possible Implementation Ideas:

• Use a mock environment to simulate TEE behavior (e.g., SGX mock or Docker-based isolation).
• Provide a config flag like --simulate or FREYSA_MODE=dev to enable it.
• Disable any Ethereum signing or treasury access logic in this mode.