[scrape] New OCaml Planet blog posts and videos (#3589)

- cwn: OCaml Weekly News, 31 Mar 2026
- jonludlam: Weeknotes 2026 week 13
- jonludlam: Weeknotes 2026 week 12
- jonludlam: Weeknotes 2026 week 11
- samoht: Describing Binary Formats in OCaml

Co-authored-by: cuihtlauac <1917592+cuihtlauac@users.noreply.github.com>

Author: github-actions[bot]

data/planet/cwn/ocaml-weekly-news-31-mar-2026.md

@@ -0,0 +1,11 @@
+---
+title: OCaml Weekly News, 31 Mar 2026
+description:
+url: https://alan.petitepomme.net/cwn/2026.03.31.html
+date: 2026-03-31T12:00:00-00:00
+preview_image:
+authors:
+- Caml Weekly News
+source:
+ignore:
+---

data/planet/jonludlam/weeknotes-2026-week-11.md

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+---
+title: Weeknotes 2026 week 11
+description:
+url: https://jon.recoil.org/blog/2026/03/weeknotes-2026-11.html
+date: 2026-03-18T00:00:00-00:00
+preview_image:
+authors:
+- Jon Ludlam
+source:
+ignore:
+---

data/planet/jonludlam/weeknotes-2026-week-12.md

@@ -0,0 +1,11 @@
+---
+title: Weeknotes 2026 week 12
+description:
+url: https://jon.recoil.org/blog/2026/03/weeknotes-2026-12.html
+date: 2026-03-23T00:00:00-00:00
+preview_image:
+authors:
+- Jon Ludlam
+source:
+ignore:
+---

data/planet/jonludlam/weeknotes-2026-week-13.md

@@ -0,0 +1,11 @@
+---
+title: Weeknotes 2026 week 13
+description:
+url: https://jon.recoil.org/blog/2026/03/weeknotes-2026-13.html
+date: 2026-03-31T00:00:00-00:00
+preview_image:
+authors:
+- Jon Ludlam
+source:
+ignore:
+---

data/planet/samoht/describing-binary-formats-in-ocaml.md

@@ -0,0 +1,12 @@
+---
+title: Describing Binary Formats in OCaml
+description: EverParse generates verified C parsers for Microsoft. I wrote an OCaml
+  front-end to use it for satellite protocols.
+url: https://gazagnaire.org/blog/2026-03-31-ocaml-wire.html
+date: 2026-03-31T00:00:00-00:00
+preview_image: https://gazagnaire.org/blog/og/2026-03-31-ocaml-wire.png
+authors:
+- Thomas Gazagnaire
+source:
+ignore:
+---