feat: add direct sandbox workspace preview#7316
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What changed
fastgpt-ide-agentand expose it throughagent-sandbox-proxyat/preview/{token}/{path}.GET,HEAD, ETag, content length/type, and single byte ranges while rejecting traversal and symlinks that escape the workspace root.sandbox_get_file_urlS3 uploads with direct workspace URLs so relative HTML assets continue to work.X-Sandbox-Ticket, document token redaction requirements, and keep the proxy origin separate from the FastGPT application origin.Why
The previous preview flow uploaded generated files to S3 and returned independent object URLs. That added storage work and made multi-file previews unreliable because relative assets such as CSS, JavaScript, and images no longer resolved against the sandbox workspace.
The proxy now treats the signed ticket as a time-limited read-only capability for the workspace and streams files directly from the running sandbox.
Impact and rollout
agent-sandbox-proxy, and the sandbox runtime image must be deployed together. Mixed-version rolling deployment is not supported./assets/app.jsremain unsupported; generated previews must use relative asset paths.Validation
pnpm --filter @fastgpt-sdk/sandbox-adapter test(226 passed, 55 skipped)pnpm --filter @fastgpt/service test(3,280 passed, 35 skipped)pnpm --filter @fastgpt/app typecheckpnpm --dir document exec fumadocs-mdxgit diff --check upstream/main...HEADupstream/main;git range-diffconfirms both feature commits are unchanged.