[Amronos]

Problem

The dashboard can't be served under a path prefix. Behind a reverse proxy that mounts it at https://tools.example.com/agent-browser/, the page loads but stays unstyled and disconnected: the HTML, JS chunks, favicon and logos point at /_next/..., /favicon.ico and /providers/..., and the client calls /api/... and ws://<host>/api/session/<port>/stream from the origin root. Today a proxy has to rewrite those strings in the served HTML and JS.

#1159 tried to solve this with a build-time placeholder that the Rust server replaced in every response. It was opened before #1111 merged and has not been updated since April, so it no longer applies to cli/src/native/stream/.

Changes

The dashboard is a single static page, so every URL can be relative to that page. No flag, environment variable or server change is needed, and at / every URL resolves to the same path as before.

• next.config.ts: assetPrefix: ".". The exported HTML, the Turbopack chunk loader and the CSS now load ./_next/....
• getDashboardApiPath returns ./api/.... exec.ts and chat.ts use it instead of hardcoded /api/... strings. getSessionStreamUrl resolves the stream path against window.location and switches the scheme to ws:/wss:.
• The favicon moves from src/app/ to public/ and is set with metadata.icons: "./favicon.ico", because Next always emits a root-absolute link for src/app/favicon.ico. Engine and provider logos use ./ paths.
• Docs: dashboard.mdx, skill-data/core/references/commands.md and dashboard --help explain how to proxy under a prefix (strip it before forwarding, forward WebSocket upgrades, keep the trailing slash, and insert the path before the access URL's fragment).

Verification

I built the dashboard with pnpm build and served out/ through a small Node reverse proxy. The proxy stripped /agent-browser/ and forwarded /api/ and WebSocket upgrades to agent-browser dashboard start --port 4949 (v0.41.2) with an open Chrome session.

Before (main) under /agent-browser/:

After under /agent-browser/, the page loads styled and the stream connects at ws://127.0.0.1:8090/agent-browser/api/session/41191/stream. Adding a tab sent POST /agent-browser/api/exec. Every request the page made stayed under the prefix.

The same build at / requests /favicon.ico, /api/sessions, /api/chat/status, /api/session/<port>/tabs, /api/models and ws://<host>/api/session/<port>/stream, the same URLs as before. next dev still serves the dashboard at /. pnpm --filter docs test, type-check, build and test:routes pass.

Refs #1129 (now discussion #2378).

Written by Opus 5.5 (opus-5.5) through Sprocket.

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