From 13b2db40a16d5da9dacc4e0c1afdad004cb58d6d Mon Sep 17 00:00:00 2001
From: Cameron Pfiffer <cameron@pfiffer.org>
Date: Thu, 27 Aug 2026 17:43:49 -0700
Subject: [PATCH] Canonicalize trailing-slash routes.
MIME-Version: 1.0
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Redirect GET and HEAD requests to one slash-free URL so shared links do not 404 or create duplicate Knowledge routes.

👾 Generated with [Letta Code](https://letta.com)

Co-Authored-By: Letta Code <noreply@letta.com>
---
 src/index.tsx         |  3 +++
 src/knowledge.test.ts | 16 ++++++++++++++++
 2 files changed, 19 insertions(+)

diff --git a/src/index.tsx b/src/index.tsx
index 6140660..04e3067 100644
--- a/src/index.tsx
+++ b/src/index.tsx
@@ -1,6 +1,7 @@
 import "./env.ts";
 import { Hono } from "hono";
 import { renderToReadableStream } from "hono/jsx/streaming";
+import { trimTrailingSlash } from "hono/trailing-slash";
 import { serveStatic } from "@hono/node-server/serve-static";
 import { serve } from "@hono/node-server";
 import { Site } from "./components/site.tsx";
@@ -43,6 +44,8 @@ import {
 
 const app = new Hono();
 
+app.use(trimTrailingSlash({ alwaysRedirect: true }));
+
 // --- Static files ---
 app.use(
   "/public/fonts/*",
diff --git a/src/knowledge.test.ts b/src/knowledge.test.ts
index d66a27f..afb91ae 100644
--- a/src/knowledge.test.ts
+++ b/src/knowledge.test.ts
@@ -5,6 +5,7 @@ import { tmpdir } from "node:os";
 import { join } from "node:path";
 import test from "node:test";
 import { Hono } from "hono";
+import { trimTrailingSlash } from "hono/trailing-slash";
 import { KnowledgeVideo } from "./components/knowledge-entry.tsx";
 import {
   knowledgeContentDigest,
@@ -177,6 +178,21 @@ test("captures multiple knowledge path segments in Hono", async () => {
   assert.equal(await response.text(), "language-models/gemini");
 });
 
+test("redirects trailing slashes to canonical Knowledge URLs", async () => {
+  const app = new Hono();
+  app.use(trimTrailingSlash({ alwaysRedirect: true }));
+  app.get("/knowledge", (context) => context.text("knowledge"));
+  app.get("/knowledge/:route{.+}", (context) => context.text(context.req.param("route")));
+
+  const landing = await app.request("https://cameron.stream/knowledge/?view=map");
+  assert.equal(landing.status, 301);
+  assert.equal(landing.headers.get("location"), "https://cameron.stream/knowledge?view=map");
+
+  const entry = await app.request("https://cameron.stream/knowledge/agent-memory/");
+  assert.equal(entry.status, 301);
+  assert.equal(entry.headers.get("location"), "https://cameron.stream/knowledge/agent-memory");
+});
+
 test("indexes canonical nested routes and rejects route collisions", async () => {
   const root = await mkdtemp(join(tmpdir(), "knowledge-routes-"));
   try {
-- 
2.51.2