changelog: #7335 jsArg inline-handler escaping (@zicochaos)

Co-authored-by: zicochaos <zicochaos@users.noreply.github.com>

CHANGELOG.md

@@ -5,6 +5,8 @@
 
 ### Fixed
 
+- **Inline event-handler arguments across the UI are now escaped for the JavaScript context, closing an attribute-injection class.** `esc()` only escapes for HTML, but the browser decodes attribute entities *before* it parses an inline handler's JavaScript, so a value interpolated as `onclick="fn('${esc(id)}')"` let a quote in the data break out of the JS string literal (the #3797 bug class). A shared `jsArg()` helper (`esc(JSON.stringify(String(v)))` — `JSON.stringify` supplies its own quotes, `esc()` then makes the result attribute-safe) now wraps **every** inline-handler string argument across cron/kanban/checkpoint/gateway/passkey/notes actions, session handoff hints, and onboarding device-code copy. The one-off `_kanbanJsArg` that previously fixed this for kanban buttons alone is removed in a clean cutover. Thanks @zicochaos. (#7335, closes #3797)
+
 - **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)