Add operator dispatch CLI

[mdheller]

Summary

Adds agent-term-dispatch, a thin operator-facing CLI for sending one event through the real AgentTerm dispatch pipeline.

It adds:

• dispatch_cli.py entrypoint.
• agent-term-dispatch console script.
• In-memory/default local wiring for Matrix posture, Agent Registry, Policy Fabric, registered participants, cloudshell-fog, AgentPlane, Sociosphere, Prophet Workspace, Slash Topics, Memory Mesh, New Hope, Sherlock Search, Holmes, and MeshRush scaffolds.
• CLI flags for local agent registration, tool grants, policy decisions, explicit policy actions, sensitive context, and Matrix E2EE posture.
• Optional snapshot rendering with --show-snapshot.
• Tests for successful dispatch, unknown-agent block, registered agent + policy + grant dispatch, and unverified encrypted sensitive-context block.

Boundary decisions

• This is still local/default/in-memory scaffold wiring, not live service integration.
• Agent Registry remains authoritative for agent identity/grants/revocation; CLI registration flags are local test/dev fixtures only.
• Policy Fabric remains authoritative for admission; CLI policy flags are local test/dev fixtures only.
• Matrix E2EE posture blocks sensitive context before policy and adapter dispatch.
• EventStore persists the input event plus all gate/result events.

Validation

Expected CI:

ruff check .
pytest

Next lane after merge: live config loading for the pipeline and then real service-backed adapters.