From 79826b9a4d9b9cd749f33f7a77939faf0969e510 Mon Sep 17 00:00:00 2001
From: ruv <ruv@ruv.net>
Date: Sun, 26 Apr 2026 20:15:48 -0400
Subject: [PATCH] fix(dashboard): pass Vite BASE_URL to worker for GH-Pages
 base resolution
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Worker was resolving /nvsim-pkg/ against self.location.origin, which
under GitHub Pages stripped the /RuView/nvsim/ prefix and 404'd on the
WASM module. Main thread now reads import.meta.env.BASE_URL and forwards
it in the boot RPC; worker resolves against that.

Verified live at https://ruvnet.github.io/RuView/nvsim/ — boot succeeds,
witness verified, determinism gate ✓.

Co-Authored-By: claude-flow <ruv@ruv.net>
---
 dashboard/src/transport/WasmClient.ts |  6 +++++-
 dashboard/src/transport/worker.ts     | 12 ++++++++----
 2 files changed, 13 insertions(+), 5 deletions(-)

diff --git a/dashboard/src/transport/WasmClient.ts b/dashboard/src/transport/WasmClient.ts
index b3e63a28..8dbb2313 100644
--- a/dashboard/src/transport/WasmClient.ts
+++ b/dashboard/src/transport/WasmClient.ts
@@ -91,8 +91,12 @@ export class WasmClient implements NvsimClient {
 
   async boot(): Promise<WasmBootInfo> {
     if (this.bootInfo) return this.bootInfo;
+    // Pass Vite's resolved BASE_URL so the worker can locate /nvsim-pkg/
+    // under the same prefix the dashboard is served from (e.g. /RuView/nvsim/
+    // on GitHub Pages, "/" in dev).
+    const base = import.meta.env.BASE_URL ?? '/';
     const r = await this.rpc<{ buildVersion: string; frameMagic: number; frameBytes: number; expectedWitnessHex: string }>(
-      { type: 'boot' },
+      { type: 'boot', base },
     );
     this.bootInfo = {
       buildVersion: r.buildVersion,
diff --git a/dashboard/src/transport/worker.ts b/dashboard/src/transport/worker.ts
index c169bbf2..8227a618 100644
--- a/dashboard/src/transport/worker.ts
+++ b/dashboard/src/transport/worker.ts
@@ -38,9 +38,12 @@ let expectedReferenceWitnessHex!: () => string;
 let hexWitness!: (b: Uint8Array) => string;
 let referenceWitness!: () => Uint8Array;
 
-async function loadPkg(): Promise<void> {
-  const baseHref = `${ws.location.origin}/`;
-  const pkgUrl = new URL('nvsim-pkg/nvsim.js', baseHref).href;
+async function loadPkg(base: string): Promise<void> {
+  // `base` is the dashboard's BASE_URL injected by Vite, prefixed with the
+  // origin so we get an absolute URL the dynamic import can resolve. In dev
+  // this is "/", in prod under GitHub Pages it's "/RuView/nvsim/".
+  const absoluteBase = new URL(base, ws.location.origin).href;
+  const pkgUrl = new URL('nvsim-pkg/nvsim.js', absoluteBase).href;
   const pkg = (await import(/* @vite-ignore */ pkgUrl)) as NvsimPkg;
   await pkg.default();
   _WasmPipeline = pkg.WasmPipeline;
@@ -119,7 +122,8 @@ ws.addEventListener('message', async (ev: MessageEvent): Promise<void> => {
   try {
     switch (m.type) {
       case 'boot': {
-        await loadPkg();
+        const base = (m.base as string | undefined) ?? '/';
+        await loadPkg(base);
         ensureRebuild();
         post({
           type: 'booted',