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refactor(e2b): narrow the sandbox POC

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Tianyi Cui
2026-07-30 04:25:47 +08:00
parent bb0be75d85
commit de77310c6f
37 changed files with 176 additions and 881 deletions
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packages/e2b/fs-e2b/README.md
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@@ -24,8 +24,8 @@ No direct invalidation; the named consumer owns any request-prefix changes.
## Known Limitations and Deferred Work
- **No host synchronization** — an empty E2B cwd stays empty until a tool, command, template, or external process populates it; local files are neither uploaded nor reflected back.
- **No host synchronization** — an empty E2B cwd stays empty until a tool, command, or external process populates it; local files are neither uploaded nor reflected back.
- **Mutation coordination is host-process-local** — another harness connection or remote command can race the adapter; version guards detect only metadata changes represented by E2B.
- **Reads reopen canonical targets by path** — a concurrent remote path replacement between resolution and stream opening is not fenced by a stable file handle; no observed product defect justifies a provider-specific bounded-read protocol in this POC.
- **Whole-file mutation costs remain** — overwrite diffs and literal edits read complete files into host memory, and every operation incurs E2B controller latency.
- **Custom templates must support the used Linux/GNU and E2B filesystem features** — `realpath -mz`, `base64 -w0`, `chmod`, same-filesystem rename, streaming reads, and file metadata extended attributes are required; unsupported templates fail rather than degrade silently.
- **The POC targets E2B's default Linux image** — it relies on GNU `realpath`/`base64`/`chmod`, same-filesystem rename, streaming reads, and metadata extended attributes; custom templates are outside this POC.