chore: prepare 0.5.36 release notes

Author: ByBrawe

.release-notes.md

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+Empty-turn fail-safe release.
+
+- Distinguish a completed assistant message from a meaningful completed Loop turn instead of treating a timestamp-only blank reply as success.
+- Count non-empty assistant text and tool/file/patch/artifact activity anywhere in the logical run as meaningful work, including tool-only runs with a blank final assistant tail.
+- Refund a completed-but-empty logical run so it does not consume `runCount`, `--max-runs`, or normal success finalization/checkpoint behavior.
+- Persist consecutive empty-turn state across reloads, retry one empty completion with bounded delay, then pause safely after the second consecutive empty turn with a visible warning instead of injecting prompts forever.
+- Recover stale host `busy` state for already-completed empty turns so the fail-safe can finalize them rather than leaving the Loop stuck between busy and due states.
+- Add focused regressions for blank/whitespace replies, tool activity, max-run refund/re-enable, bounded retry, fail-safe pause, successful streak reset, and generated-bundle parity; full Ubuntu/Windows CI, real-host, Goal coexistence, lifecycle, and single-file bundle gates are green on the feature head.