Expose the effective target on every read and write

[justguy]

Tracker task: t15
Tracker: llm-tracker
Swimlane: improvements
Priority: p1

Goal

Every authoritative read and write response should include daemon port, workspace path, actual tracker file path, and whether the topology is shared-workspace or repo-linked.

Current note

Topology is still too easy to get wrong; effective target data should be unavoidable in the contract.

Tracker context

• Created from the live llm-tracker improvements swimlane backlog.
• Keep the tracker row and the GitHub issue aligned as this work evolves.