fix(seo): add trailing-slash redirect variants for bare docs paths (#245)

Vercel's trailingSlash:true rewrites /foo → /foo/ before evaluating
redirects, so bare-path redirect rules like /concepts/:path* never fire.
The trailing-slash redirect intercepts first, then /concepts/arbitrage/
doesn't match any redirect → 404.

Adds trailing-slash source variants for all exact-match redirects and
section index paths. Also adds redirects for /me and /value-bets which
GSC reported as 404s.

Fixes 5 GSC redirect errors + ~5 of the 19 GSC 404s.

Co-authored-by: paperclip-resolver[bot] <3736210+paperclip-resolver[bot]@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: 3 people

vercel.json

@@ -5,6 +5,26 @@
   "cleanUrls": true,
   "ignoreCommand": "git diff --quiet HEAD^ HEAD -- app/ components/ content/ public/ scripts/ next.config.mjs proxy.ts mdx-components.tsx package.json vercel.json",
   "redirects": [
+    {
+      "source": "/me",
+      "destination": "/en/",
+      "permanent": true
+    },
+    {
+      "source": "/me/",
+      "destination": "/en/",
+      "permanent": true
+    },
+    {
+      "source": "/value-bets",
+      "destination": "/en/api-reference/opportunities-ev",
+      "permanent": true
+    },
+    {
+      "source": "/value-bets/",
+      "destination": "/en/api-reference/opportunities-ev/",
+      "permanent": true
+    },
     {
       "source": "/",
       "destination": "/en/",
@@ -30,36 +50,71 @@
       "destination": "/en/api-reference/odds",
       "permanent": true
     },
+    {
+      "source": "/api/v1/futures/odds/",
+      "destination": "/en/api-reference/odds/",
+      "permanent": true
+    },
     {
       "source": "/splits",
       "destination": "/en/api-reference/splits",
       "permanent": true
     },
+    {
+      "source": "/splits/",
+      "destination": "/en/api-reference/splits/",
+      "permanent": true
+    },
     {
       "source": "/odds/delta",
       "destination": "/en/api-reference/odds-delta",
       "permanent": true
     },
+    {
+      "source": "/odds/delta/",
+      "destination": "/en/api-reference/odds-delta/",
+      "permanent": true
+    },
     {
       "source": "/odds/best",
       "destination": "/en/api-reference/odds-best",
       "permanent": true
     },
+    {
+      "source": "/odds/best/",
+      "destination": "/en/api-reference/odds-best/",
+      "permanent": true
+    },
     {
       "source": "/odds",
       "destination": "/en/api-reference/odds",
       "permanent": true
     },
+    {
+      "source": "/odds/",
+      "destination": "/en/api-reference/odds/",
+      "permanent": true
+    },
     {
       "source": "/streaming",
       "destination": "/en/streaming/overview",
       "permanent": true
     },
+    {
+      "source": "/streaming/",
+      "destination": "/en/streaming/overview/",
+      "permanent": true
+    },
     {
       "source": "/streaming/overview",
       "destination": "/en/streaming/overview",
       "permanent": true
     },
+    {
+      "source": "/streaming/overview/",
+      "destination": "/en/streaming/overview/",
+      "permanent": true
+    },
     {
       "source": "/streaming/:path*",
       "destination": "/en/streaming/:path*",
@@ -70,11 +125,21 @@
       "destination": "/en/api-reference/overview",
       "permanent": true
     },
+    {
+      "source": "/api-reference/",
+      "destination": "/en/api-reference/overview/",
+      "permanent": true
+    },
     {
       "source": "/api-reference/overview",
       "destination": "/en/api-reference/overview",
       "permanent": true
     },
+    {
+      "source": "/api-reference/overview/",
+      "destination": "/en/api-reference/overview/",
+      "permanent": true
+    },
     {
       "source": "/api-reference/:path*",
       "destination": "/en/api-reference/:path*",
@@ -85,6 +150,11 @@
       "destination": "/en/concepts/arbitrage",
       "permanent": true
     },
+    {
+      "source": "/concepts/",
+      "destination": "/en/concepts/arbitrage/",
+      "permanent": true
+    },
     {
       "source": "/concepts/:path*",
       "destination": "/en/concepts/:path*",
@@ -95,6 +165,11 @@
       "destination": "/en/sdks/typescript",
       "permanent": true
     },
+    {
+      "source": "/sdks/",
+      "destination": "/en/sdks/typescript/",
+      "permanent": true
+    },
     {
       "source": "/sdks/:path*",
       "destination": "/en/sdks/:path*",
@@ -105,6 +180,11 @@
       "destination": "/en/examples/arbitrage-scanner",
       "permanent": true
     },
+    {
+      "source": "/examples/",
+      "destination": "/en/examples/arbitrage-scanner/",
+      "permanent": true
+    },
     {
       "source": "/examples/:path*",
       "destination": "/en/examples/:path*",
@@ -115,41 +195,81 @@
       "destination": "/en/authentication",
       "permanent": true
     },
+    {
+      "source": "/authentication/",
+      "destination": "/en/authentication/",
+      "permanent": true
+    },
     {
       "source": "/quickstart",
       "destination": "/en/quickstart",
       "permanent": true
     },
+    {
+      "source": "/quickstart/",
+      "destination": "/en/quickstart/",
+      "permanent": true
+    },
     {
       "source": "/pricing",
       "destination": "/en/pricing",
       "permanent": true
     },
+    {
+      "source": "/pricing/",
+      "destination": "/en/pricing/",
+      "permanent": true
+    },
     {
       "source": "/en/streaming",
       "destination": "/en/streaming/overview",
       "permanent": true
     },
+    {
+      "source": "/en/streaming/",
+      "destination": "/en/streaming/overview/",
+      "permanent": true
+    },
     {
       "source": "/en/api-reference",
       "destination": "/en/api-reference/overview",
       "permanent": true
     },
+    {
+      "source": "/en/api-reference/",
+      "destination": "/en/api-reference/overview/",
+      "permanent": true
+    },
     {
       "source": "/en/concepts",
       "destination": "/en/concepts/arbitrage",
       "permanent": true
     },
+    {
+      "source": "/en/concepts/",
+      "destination": "/en/concepts/arbitrage/",
+      "permanent": true
+    },
     {
       "source": "/en/sdks",
       "destination": "/en/sdks/typescript",
       "permanent": true
     },
+    {
+      "source": "/en/sdks/",
+      "destination": "/en/sdks/typescript/",
+      "permanent": true
+    },
     {
       "source": "/en/examples",
       "destination": "/en/examples/arbitrage-scanner",
       "permanent": true
     },
+    {
+      "source": "/en/examples/",
+      "destination": "/en/examples/arbitrage-scanner/",
+      "permanent": true
+    },
     {
       "source": "/en/openapi.json",
       "destination": "/openapi.json",