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Release OpenEnv 0.12.0 (rolling release PR, candidate for Thursday 2026-11-05)

Version change only: pyproject.toml, envs/grid_world_env/uv.lock, tests/validation_runtime/uv.lock (0.11.1.dev0 -> 0.12.0). Base: main 07644784.

Changes since v0.11.0

• Raise SessionLostError when the WebSocket drops mid-episode #1536 Raise SessionLostError (new public exception, exported from openenv.core) when the WebSocket drops mid-episode instead of silently reconnecting to an unreset environment. New public API plus behavior change, so the proposed bump is minor (0.12.0) rather than patch (0.11.1).
• textarena_env: parse TEXTARENA_KW_* values as JSON #1530 textarena_env: parse TEXTARENA_KW_* values as JSON so numeric kwargs keep their type.
• chore(deps): bump authlib from 1.8.0 to 1.9.1 in /tests/validation_runtime #1538 (and chore(deps): bump authlib from 1.7.1 to 1.9.1 in /envs/websearch_env #1539 if merged before release) authlib 1.9.1 lock bumps (test/env locks only, not shipped).

Blockers / decisions

• Version decision for Ben: 0.12.0 (default, silence = 0.12.0) vs 0.11.1.
• Outstanding fork PRs need a maintainer Approve-and-run before CI can validate (e.g. Fix async pre-hook ordering in rubric containers #1543 rubric async pre-hook fix, fix(core): parse continued Dockerfile CMD instructions #1532, rubrics: reset child rubrics when a rubric is reset #1535, capture: share image history strings across turns to avoid quadratic memory #1534). They are not in the candidate.

State (automation)

• Last reviewed head: d5c2e22, release lock: none, TestPyPI: not yet run, tag: none.
• Merge with: --squash --subject "Release OpenEnv 0.12.0 (#N)" --match-head-commit <head>.

  

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Note

Low Risk
Version and lockfile-only changes with no application logic in the diff.

Overview
This PR finalizes the 0.12.0 release by bumping the published openenv version from 0.11.1.dev0 to 0.12.0 in pyproject.toml and syncing the editable openenv entry in envs/grid_world_env/uv.lock and tests/validation_runtime/uv.lock.

There are no runtime or API edits in the diff itself—only packaging/version metadata so installs and CI locks align with the release tag.

^{Reviewed by Cursor Bugbot for commit 982db4a. Bugbot is set up for automated code reviews on this repo. Configure here.}

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Release state, Wednesday 2026-11-04 (automation)

• Candidate head: ff68fd16 (merge of main f6c00434 into the release branch). Diff vs main is the three version lines only (pyproject.toml, envs/grid_world_env/uv.lock, tests/validation_runtime/uv.lock, 0.11.1.dev0 -> 0.12.0). Main moved only in examples/wordle/* and tests/scripts/test_wordle_training.py (#1537); nothing in the wheel.
• CI on exact head: 14/14 green, merge state CLEAN.
• Local: uv build + twine check pass; clean-venv wheel install imports openenv and openenv.core.SessionLostError, CLI runs; real Echo env reset/step over WebSocket passes.
• TestPyPI 0.12.0.dev261 (run 41783019625, scratch branch testpypi/0.12.0): wheel is byte-identical to the local build (203 non-metadata members).
• Changes since v0.11.0 in the package: #1536 SessionLostError (new public API, behavior change; hence minor), #1530 textarena env kwargs (not in wheel), lock-only authlib bumps #1538/#1539.
• Decision for Ben: 0.12.0 (default; silence = 0.12.0) vs 0.11.1.
• Not in candidate: fork PRs awaiting a maintainer Approve-and-run (#1543, #1532, #1535, #1534, #1527, #1493), #1331 (FastMCP 4).
• Release lock: none. Tag: none. Thursday: re-check main head vs ff68fd16; merge with --squash --subject "Release OpenEnv 0.12.0 (#1544)" --match-head-commit <head>.

  

_{Sent by Cursor Automation: Release}

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Alignment Review Report

Diff reviewed: af3bac89..982db4a0 — 3 files changed, 3 insertions, 3 deletions. This PR only bumps the published openenv version (0.11.1.dev0 → 0.12.0) in pyproject.toml and syncs the editable openenv entry in envs/grid_world_env/uv.lock and tests/validation_runtime/uv.lock. No application/runtime code is touched.

Automated Checks

• Lint (bash .claude/hooks/lint.sh): FAIL overall, but no findings in the diff. The repo-wide run flags 47 pre-existing files needing ruff format (e.g. envs/textarena_env/server/gradio_ui.py, envs/unity_env/README.md, envs/wildfire_env/README.md, src/openenv/core/harness/README.md) and an usort issue in envs/snake_env. None of the three files this PR touches (pyproject.toml, the two uv.lock files) are Python sources the hook lints, and none appear in the failure list — these are pre-existing issues unrelated to this change.
• Debug code (bash .claude/hooks/check-debug.sh): repo-wide scan finds pre-existing print(...) usage (mostly intentional CLI/docstring output in src/openenv/cli/** and console.print Rich calls) and two pre-existing TODO comments. None are introduced by this diff.

Version-bump correctness

• pyproject.toml version matches both updated lockfiles (0.12.0).
• Root uv.lock (gitignored, not part of the diff) already reflects 0.12.0 locally via uv sync, consistent with pyproject.toml — no drift.
• No other openenv version references were left stale (rg "0.11.1" only matches unrelated third-party packages connectrpc/obstore, not openenv).
• src/openenv/__init__.py.__version__ is derived dynamically from package metadata (not hardcoded), so it tracks pyproject.toml automatically — nothing extra to update there.
• Per INVARIANTS.md's breaking-change policy, a MINOR bump (0.11→0.12) for the new public SessionLostError exception (#1536) is the correct classification pre-1.0 (new, backward-compatible API).

Open RFCs Context

Scanned rfcs/: most are In Review (000, 001, 002, 003, 005, 006, 008, 012, 014) and two are Draft (010, 011). None of them govern the release/versioning process, so there is no RFC whose design this diff could pre-empt or conflict with.

Tier 1: Fixes Required

None. The diff contains no Python source changes, so no lint/debug/type findings apply to it.

Tier 2: Alignment Discussion

Principle Conflicts

None identified. This is a mechanical version bump; it doesn't touch the Gym-like API, MCP boundary, reward computation, or client/server separation covered in PRINCIPLES.md/INVARIANTS.md.

RFC Conflicts

None identified.

Summary

• 0 mechanical issues to fix (the lint/debug findings surfaced by the hooks are pre-existing and outside this diff's three files)
• 0 alignment points for human review
• 0 RFC conflicts to discuss

This is a clean, low-risk, version-only release PR consistent with the repo's rolling release process.

  

_{Sent by Cursor Automation: Pre-review}