Expose disabled project active runs in operator snapshots

[yvette-carlisle]

Summary

• Keep disabled projects out of scheduler ticks while still hydrating active runtime DB-backed runs into operator/App snapshots.
• Include disabled-project active runs in dashboard websocket runActivity events.
• Document that project disable pauses future dispatch instead of deleting visibility or active ownership.

Validation

• cargo make fmt-check
• cargo make check-vstyle-rust
• cargo test -p decodex control_plane_snapshot -- --nocapture
• cargo test -p decodex operator_dashboard_run_activity_event -- --nocapture
• cargo make check-rust
• /Users/x/.codex/plugins/cache/hack-ink/playbook/0.3.0/scripts/semantic_drift_audit.py