diff --git a/apps/web/tests/math-rendering.e2e.ts b/apps/web/tests/math-rendering.e2e.ts
index f491d63b6a..2c908bffae 100644
--- a/apps/web/tests/math-rendering.e2e.ts
+++ b/apps/web/tests/math-rendering.e2e.ts
@@ -28,7 +28,6 @@ function mathFixture(): string {
   const session = Session.create(SessionId('math-rendering-source'))
   session.append('turn/start', {
     turn: 1,
-    trigger: { kind: 'message', source: { kind: 'user' } },
   })
   const user = session.append('user/message', createUserMessage({
     content: [{ type: 'text', text: 'Render this mathematical proof.' }],
diff --git a/docs/core-data-structures/session.i18n.yaml b/docs/core-data-structures/session.i18n.yaml
index a19508682f..041d941c64 100644
--- a/docs/core-data-structures/session.i18n.yaml
+++ b/docs/core-data-structures/session.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write docs/core-data-structures/session.md
-session.md: e6cc05179acd03e2e4564e4690ed2a119ae6d35e
-session.zh.md: 0ed5fe99546681ff003e761eabb835e98edf19d5
+session.md: 34e5ad8f7836b18412b7d51a6083e638a3908aae
+session.zh.md: e607e9bb07581c5753b48104993c75586611b675
diff --git a/packages/client/runtime/README.i18n.yaml b/packages/client/runtime/README.i18n.yaml
index 941bff5af7..457f37562a 100644
--- a/packages/client/runtime/README.i18n.yaml
+++ b/packages/client/runtime/README.i18n.yaml
@@ -2,5 +2,5 @@
 # side as of the last confirmed-consistent state. Both languages carry equal authority;
 # after editing either side, bring the other along and re-record with:
 #   pnpm run verify-translation-pairing --write packages/client/runtime/README.md
-README.md: e55587202dfdd8b2d3e7e707507ebe041769b7c5
-README.zh.md: 0d5092074592d49807d06e1bb70fc64fc2d6dcf4
+README.md: b390c2830a47ed380e01bc7ec763b4bd8d8459e8
+README.zh.md: 0aaad0b7620394f151b6a757f924d22d4f2140ab