XY-525: Sync docs for private ledger, public mirror, logs, and operator workflow

[yvette-carlisle]

Summary

• Syncs runtime, Linear ledger, tracker-tool, agent-evidence, workspace, operator, and self-dogfood docs around private execution evidence and sparse public Linear projections.
• Refreshes test-suite reference counts to the current 805-test nextest inventory found during semantic drift review.

Validation

• cargo make fmt
• cargo make lint-fix
• cargo make test (805 passed, 1 skipped)
• semantic drift audit for changed docs (no stale phrase hits)