diff --git a/ci/core-ref.json b/ci/core-ref.json
index e9ab5f2..29bd80b 100644
--- a/ci/core-ref.json
+++ b/ci/core-ref.json
@@ -1,29 +1,34 @@
 {
   "repo": "https://gitea.whitlocktech.com/RunicGateway/website.git",
   "branch": "main",
-  "ref": "4ad8b2bb0ede2747622075dcfa4cb1fe460f91ca",
+  "ref": "963d734dcc09580a7d8bb676370b4faf9b8727b2",
   "why": [
     "The core this kit is written against, pinned to a commit rather than a branch.",
-    "This one is the MODULE_API_VERSION 1.5.0 bump, which is the version",
-    "template/module.json declares. It moved here from the 1.4.0 bump because",
-    "the kit's acceptance run found PublicLayout had no way to give a module",
-    "page the site's body wrapper, and core grew a `shell` prop for it - so the",
-    "template now uses a member that only exists at this ref and later.",
+    "This one is the Teams cutover, the commit MODULE_API_VERSION 1.6.0 reached",
+    "`main` on, and 1.6.0 is what template/module.json declares. It moved here from",
+    "the 1.5.0 bump because Teams expanded the contract the book teaches: the",
+    "template now registers a Team provider and declares slots for core to fill,",
+    "and both are members that exist only at this ref and later.",
     "",
     "Moving this pin is the moment someone re-reads the chapters: CI asserts the",
     "version template/module.json declares still equals this core's",
     "MODULE_API_VERSION, so a contract bump turns this repo red on purpose",
     "(MODULE_SYSTEM.md 2.11.1 d2, 2.10).",
     "",
-    "The branch said `edge` until 2026-08-12, when the module system cut over",
-    "and that branch was deleted (MODULE_SYSTEM.md 2.9). The SHA DID NOT MOVE:",
-    "the pinned commit is an ancestor of `main`, so this is a label correction",
-    "and not a re-pin - the contract is still 1.5.0 and no chapter changed.",
-    "Nothing in CI reads this field; it clones the repo and checks out the sha,",
-    "which is why the cutover could not break the build and why a wrong label",
-    "here would have sat unnoticed. It is for the person deciding whether a",
-    "newer core is worth re-reading the book for, and a branch that no longer",
-    "exists tells them nothing.",
+    "That mechanism earned its keep this time. Writing the chapters against 1.6.0",
+    "found that core's inverted-slot fills named three of module-uo's slots",
+    "literally, so the direction worked for that one module and silently did",
+    "nothing for any other game - an empty page with nothing logged. That is the",
+    "exact class of thing a book written for an audience outside this org is meant",
+    "to catch, and it was fixed in core before this pin moved.",
+    "",
+    "The branch said `edge` until 2026-08-12, when the module system cut over and",
+    "that branch was deleted (MODULE_SYSTEM.md 2.9). Teams cut a second `edge` and",
+    "this pin skipped it entirely: the kit is written against what shipped, never",
+    "against what is in flight. Nothing in CI reads the branch field - it clones",
+    "the repo and checks out the sha - which is why a wrong label here would sit",
+    "unnoticed. It is for the person deciding whether a newer core is worth",
+    "re-reading the book for.",
     "",
     "Same convention as Module-uo's ci/core-ref.json, deliberately - one file, one",
     "sha, reviewable in a diff."