docs(changelog): stamp #6716 nested mixed-list renderer + iterative serializer

CHANGELOG.md

@@ -5,6 +5,8 @@
 
 ### Fixed
 
+- **Nested lists that mix bullets and numbers render as a real hierarchy, and a very deeply nested list no longer blanks the conversation.** The renderer used to draw one marker family and then re-parse its own generated HTML with the other, so a list mixing `-` and `1.` lost its nesting. It now builds the nested `<ul>`/`<ol>` tree in a single pass. That tree is serialized with an explicit work stack rather than recursion — the first version of this fix recursed once per nesting level and threw a `RangeError` on a pathologically deep list, and because rendering happens after the transcript is cleared the uncaught error blanked the whole session. Output is byte-identical to the previous renderer across 50,000 randomized trees. Thanks @webtecnica. (#6716, closes #6700)
+
 - **When a skill isn't found, the error reply no longer implies the skill list is complete when it was truncated.** `/api/skills/content` capped the `available_skills` courtesy list at 20 names but presented it as the whole set, so a caller (agent or human) that couldn't find its skill there would wrongly conclude it isn't installed. The reply now includes `total_skills` and `available_skills_truncated`, and the hint reads "Showing 20 of N skills…" when the list is cut, so a missing skill is never mistaken for an absent one. Thanks @elight. (#7428, closes #7426)
 
 - **Session title generation and the handoff summary work again on the Anthropic and Codex out-of-band paths.** A Hermes Agent refactor unified provider dispatch and removed the two response normalizers these paths called (`agent._normalize_codex_response` and `agent.anthropic_adapter.normalize_anthropic_response`), so on a current Agent both paths raised as soon as they ran — background title generation and the handoff summary silently produced nothing on those providers. Both call sites now go through the Agent's current transport API (`_get_transport(...).normalize_response(...)`), matching the Agent's own canonical helper including the Anthropic OAuth tool-prefix strip. Empty-response and incomplete-summary handling are unchanged. Thanks @zicochaos. (#7402)