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fix(code-execution)!: the runtime's channel moves to fds 3 and 4, and the host reads a script's stdout and stderr - #495

Merged

nissa-seru merged 32 commits into

anima-research:mainfrom

nissa-seru:fix/code-execution-output-to-host

Oct 19, 2026

Merged

fix(code-execution)!: the runtime's channel moves to fds 3 and 4, and the host reads a script's stdout and stderr#495
nissa-seru merged 32 commits into
anima-research:mainfrom
nissa-seru:fix/code-execution-output-to-host

Commits on Oct 17, 2026
- fix(code-execution): the protocol gets fds of its own, and the host reads a script's output
  
  Ansel-2428
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  38b4255
- fix(code-execution): answer an internal review: the runtime checks its own fds, flushes kept writers, and an exit is read in order
  
  Ansel-2428
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  claude
  committed
  4527dd5
- fix(code-execution): answer an internal review and the readers, and a race behind a Node 20 failure
  
  Ansel-2428
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  committed
  d1187c1
Commits on Oct 18, 2026
- fix(code-execution): a forked process leaves with its script's return code
  
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  2af1472
- fix(code-execution): the runtime's last note waits for room, as the marks do
  
  Ansel-2428
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  committed
  3342774
- Merge main (77066360): #413's texts onto this change's paths
  
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  3f9ba29
- fix(code-execution): answer an internal review and a reader's read of the merge
  
  Ansel-2428
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  committed
  0c1fa9c
- fix(code-execution): answer an internal review, and test what the PR text claims
  
  Ansel-2428
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  committed
  5101d28
- fix(code-execution): after the runtime's own exit, the advice names the fd a script took
  
  Ansel-2428
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  committed
  2af875d
- fix(code-execution): answer an internal review: the advice names an fd only after the runtime's own exit, and a detached writer is passed over
  
  Ansel-2428
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  committed
  395f310
- docs(changelog): a printed lone surrogate no longer stalls its script
  
  Ansel-2428
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  92704d7
- fix(code-execution): log output no script takes as its interpreter's, and test that a command outlives a reclaim
  
  Ansel-2428
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  c733652
- docs(changelog): the prompt cache by Anthropic's documentation, the log's new wording, and the print cost as measured at c7336528
  
  Ansel-2428
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  4f57026
- fix(code-execution): answer an internal review: the runtime's notes go only to the host's pipes, and one except passes over a closed or detached writer
  
  Ansel-2428
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  committed
  795e5a3
- docs(changelog): the runtime's last line is lost only when a script took both its copy of fd 2 and fd 2
  
  Ansel-2428
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  claude
  committed
  e22f43c
- fix(code-execution): faulthandler leaves out Python 3.14's C stack, so a crash's own line stays in what the host logs
  
  Ansel-2428
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  claude
  committed
  f8269fe
- fix(code-execution): a failed flush drops what the writer held, and the journal writes all of each chunk
  
  Ansel-2428
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  claude
  committed
  8b49e3d
- fix(code-execution): answer an internal review: the runtime's notes check only the host's own outputs, a journal write that takes none throws, and the journal's cap gets a test
  
  Ansel-2428
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  claude
  committed
  86f332f
- Merge main (d9bd6dc9) into fix/code-execution-output-to-host
  
  Ansel-2428
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  committed
  f3ae890
- fix(code-execution): answer a second internal review: writes and reads the fd checks can't see end the interpreter, and a background crash's text keeps its place
  
  Ansel-2428
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  claude
  committed
  ebccb8e
- fix(code-execution): answer an internal review of the last round: a script's own wrappers flush as the runtime's writers do, exit before fd 3's end is clean, and a background result's tail is its j…
  
  Ansel-2428
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  claude
  committed
  ee1c3c3
- fix(code-execution): a script's own sys.stdout can't break the exec's end, a time limit's signal in the flush before a fork waits for the fork, and the exit op's notes say when it lands
  
  Ansel-2428
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  claude
  committed
  9f7a0e7
- fix(code-execution): the check of the runtime's own fds compares which file each is, not its mode, so a socket's state on macOS doesn't read as a replaced fd
  
  Ansel-2428
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  claude
  committed
  328befa
- fix(code-execution): an exception with no text names its type in the runtime's note, and comments and tests say what the code does
  
  Ansel-2428
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  committed
  5a98e4a
- fix(code-execution): saying an exception in the runtime's note can't escape its handler
  
  Ansel-2428
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  committed
  176e92b
- fix(code-execution): a script that replaces a writer's flush can't keep its exec from reporting
  
  Ansel-2428
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  claude
  committed
  b3d489e
- fix(code-execution): a script that replaces its stderr writer's write can't keep its exec from reporting either
  Ansel-2428
  committed
  24372fc
- Merge main (22f7a5b1) into fix/code-execution-output-to-host
  Ansel-2428
  committed
  8506559
- fix(code-execution): bound what a command left running costs the host's log and loop, put fd 1 or 2 back off the runtime's channel at a script's end, and say a script ended when its result came bef…
  
  Ansel-2428
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  claude
  committed
  1bf3f2e
Commits on Oct 19, 2026
- docs(changelog): say what a script's closed or redirected fds 0 to 2 leave the next script
  
  Ansel-2428
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  claude
  committed
  41a0536
- fix(code-execution): hold a torn-down interpreter's pipe back again when Node resumes it, and say what a garbled result costs
  
  Ansel-2428
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  claude
  committed
  77482ae
- Merge main (4ce694e4) into fix/code-execution-output-to-host
  
  Ansel-2428
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  claude
  committed
  71c3953

Commits

Commits on Oct 17, 2026

Commits on Oct 18, 2026

Commits on Oct 19, 2026