docs: Add 2026-04-16 meeting notes (#695)

Author: sam3k

notes/2026/2026-04-16.md

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+# 2026-04-16 ESLint TSC Meeting Notes
+
+## Transcript
+
+[`2026-04-16-transcript.md`](2026-04-16-transcript.md)
+
+## Attending
+
+- Nicholas C. Zakas (@nzakas) - TSC
+- Francesco Trotta (@fasttime) - TSC
+
+@mdjermanovic was unable to attend.
+
+@nzakas moderated, and @sam3k took notes.
+
+## Topics
+
+### Follow-up from Previous Meeting
+
+**TSC Summary:** No follow-up items to review from the previous meeting.
+
+### Statuses
+
+* **@nzakas:** Has been pretty sick, so hasn't done much outside of triaging issues and PRs as he's been able.
+* **@fasttime:** Wasn't sick but had some unexpected setbacks, so also hasn't done much—only reviews and some maintenance PRs.
+
+### Availability Next Two Weeks
+
+* **@nzakas:** Targeting 0.5 hours per weekday, pending his health stabilizing.
+* **@fasttime:** Should be available 10-12 hours per week the next two weeks.
+
+### RFC Duty Update
+
+* This week: @nzakas
+* April 20: @fasttime
+* April 27: @mdjermanovic
+
+### [feat: migrate core rules to `meta.languages`](https://github.com/eslint/eslint/pull/20716)
+
+**TSC Summary:** The team discussed whether implementing `meta.languages` on core rules would be a breaking change and how to approach the rollout.
+
+**Discussion Points:**
+- The core question is whether implementing `meta.languages` on core rules is a breaking change.
+- @nzakas commented on the PR that he believes it is a breaking change and the team should be very deliberate in how core rules are updated with this info.
+- @fasttime is also under the impression that this change in the core rules would break a few setups, and would prefer updating the language plugins first.
+- The team considered going ahead and updating the `json`, `css`, and `markdown` plugins first to see how `meta.languages` works in the wild.
+- For core rules, `meta.docs.dialects` could still be added so the team can track which rules have already been updated to support TypeScript.
+
+**Resolution:** The TSC agreed to hold off on updating the core rules with `meta.languages` and instead add this info to the language plugins first to see how it works in the wild. `meta.docs.dialects` can still be added to core rules in the meantime.
+
+### Scheduled Release for April 17th, 2026
+
+**Packages to Release:**
+- `eslint` (patch release — no features since the previous release)
+- `@eslint/config-inspector` (a new release is ready)
+
+**Action Items:**
+- @fasttime will do the `eslint` release on April 17th.
+- @nzakas will do the `@eslint/config-inspector` release.