feat(code): persist reasoning effort across restarts - #4728
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Reasoning effort was in-memory only, so relaunching dcode reset it to the model default. Persist the selected effort label per model in a new `[effort.by_model]` table in `config.toml` and restore it at startup and on `/model` switch, re-validating against the active model so a stored label is never applied to a model that cannot support it. Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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- `_restore_effort_override` now lets explicit per-session/resumed-thread model params take precedence: a saved effort only fills in when the active params do not already specify one, and an invalid saved label is pruned without stripping unrelated params. - Serialize `config.toml` read-modify-write transactions behind a shared module lock so concurrent effort/model/default/recent writes within a process no longer clobber each other's changes. Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
Johannes du Plessis (johannes117)
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> [!CAUTION] > Merging this PR will automatically publish to **PyPI** and create a **GitHub release**. For the full release process, see [`.github/RELEASING.md`](https://github.com/langchain-ai/deepagents/blob/main/.github/RELEASING.md). --- _Release notes preview: keep this section in sync with the package `CHANGELOG.md`. The published GitHub release body is extracted from the merged `CHANGELOG.md` by `release.yml`, not from this PR description._ --- ## [0.1.40](deepagents-code==0.1.39...deepagents-code==0.1.40) (2026-07-16) ### Features - Added plugin marketplace support ([#4554](#4554)). - Added an “always allow” option to the project MCP approval prompt ([#4562](#4562)). - Improved `/goal` workflows: criteria generation now runs server-side, YOLO mode auto-accepts criteria, goals complete after satisfied grading, and goal review editing now supports `Ctrl+X` ([#4754](#4754), [#4784](#4784), [#4781](#4781), [#4780](#4780)). - Reasoning effort now persists across restarts ([#4728](#4728)). - Added a toast prompting you to re-paste when a chat paste collapses ([#4742](#4742)). ### Bug Fixes - Tool calls awaiting approval are now surfaced correctly ([#4739](#4739)). - Fixed transcript tail hydration when scrolled to the bottom edge ([#4733](#4733)). - Kept chat input responsive during MCP viewer `Ctrl+R` reconnects ([#4753](#4753)). - Improved inline free-text prompts by sharing paste handling and matching primary-input `Ctrl+D` behavior ([#4736](#4736), [#4729](#4729)). - Fixed local offloaded tool results to use the real filesystem ([#4740](#4740)). - Cleaned offloaded history when deleting a thread ([#4751](#4751)). - Removed duplicated content from the system prompt by overwriting the base prompt ([#4516](#4516)). - Closed subprocess transport during install teardown ([#4735](#4735)). - Added targeted `uv` constraints for prerelease dependencies ([#4744](#4744)). _End release notes preview._ --- > [!NOTE] > A **New Contributors** section is appended to the GitHub release notes automatically at publish time (see [Release Pipeline](https://github.com/langchain-ai/deepagents/blob/main/.github/RELEASING.md#release-pipeline), step 2). --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: langchain-oss-automated-triage[bot] <248757908+langchain-oss-automated-triage[bot]@users.noreply.github.com>
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`dcode` now remembers your selected reasoning effort per model across restarts. --- Reasoning effort was in-memory only (`_model_params_override`), so relaunching `dcode` reset it to the model/provider default. This persists the selected effort *label* per model in a new `[effort.by_model]` table in `config.toml` — mirroring the existing `[models].default` persistence pattern — and restores it at startup and on `/model` switch. Restoration always re-validates the stored label against the active model via `supported_efforts_for_model` / `model_params_for_effort`, so a label like `max` is never applied to a model that can't support it (invalid entries are pruned and the model default is used). Storing the label rather than raw provider params lets it be re-mapped per active model. Made by [Open SWE](https://openswe.vercel.app/agents/028bd7f3-4eb6-351c-63e9-9af5c09c0281) ## References - Plan: https://openswe.vercel.app/agents/028bd7f3-4eb6-351c-63e9-9af5c09c0281/plan --------- Co-authored-by: Johannes du Plessis <51395795+johannes117@users.noreply.github.com> Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
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Jul 30, 2026
> [!CAUTION] > Merging this PR will automatically publish to **PyPI** and create a **GitHub release**. For the full release process, see [`.github/RELEASING.md`](https://github.com/langchain-ai/deepagents/blob/main/.github/RELEASING.md). --- _Release notes preview: keep this section in sync with the package `CHANGELOG.md`. The published GitHub release body is extracted from the merged `CHANGELOG.md` by `release.yml`, not from this PR description._ --- ## [0.1.40](langchain-ai/deepagents@deepagents-code==0.1.39...deepagents-code==0.1.40) (2026-07-16) ### Features - Added plugin marketplace support ([langchain-ai#4554](langchain-ai#4554)). - Added an “always allow” option to the project MCP approval prompt ([langchain-ai#4562](langchain-ai#4562)). - Improved `/goal` workflows: criteria generation now runs server-side, YOLO mode auto-accepts criteria, goals complete after satisfied grading, and goal review editing now supports `Ctrl+X` ([langchain-ai#4754](langchain-ai#4754), [langchain-ai#4784](langchain-ai#4784), [langchain-ai#4781](langchain-ai#4781), [langchain-ai#4780](langchain-ai#4780)). - Reasoning effort now persists across restarts ([langchain-ai#4728](langchain-ai#4728)). - Added a toast prompting you to re-paste when a chat paste collapses ([langchain-ai#4742](langchain-ai#4742)). ### Bug Fixes - Tool calls awaiting approval are now surfaced correctly ([langchain-ai#4739](langchain-ai#4739)). - Fixed transcript tail hydration when scrolled to the bottom edge ([langchain-ai#4733](langchain-ai#4733)). - Kept chat input responsive during MCP viewer `Ctrl+R` reconnects ([langchain-ai#4753](langchain-ai#4753)). - Improved inline free-text prompts by sharing paste handling and matching primary-input `Ctrl+D` behavior ([langchain-ai#4736](langchain-ai#4736), [langchain-ai#4729](langchain-ai#4729)). - Fixed local offloaded tool results to use the real filesystem ([langchain-ai#4740](langchain-ai#4740)). - Cleaned offloaded history when deleting a thread ([langchain-ai#4751](langchain-ai#4751)). - Removed duplicated content from the system prompt by overwriting the base prompt ([langchain-ai#4516](langchain-ai#4516)). - Closed subprocess transport during install teardown ([langchain-ai#4735](langchain-ai#4735)). - Added targeted `uv` constraints for prerelease dependencies ([langchain-ai#4744](langchain-ai#4744)). _End release notes preview._ --- > [!NOTE] > A **New Contributors** section is appended to the GitHub release notes automatically at publish time (see [Release Pipeline](https://github.com/langchain-ai/deepagents/blob/main/.github/RELEASING.md#release-pipeline), step 2). --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> Co-authored-by: langchain-oss-automated-triage[bot] <248757908+langchain-oss-automated-triage[bot]@users.noreply.github.com>
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dcodenow remembers your selected reasoning effort per model across restarts.Reasoning effort was in-memory only (
_model_params_override), so relaunchingdcodereset it to the model/provider default. This persists the selected effort label per model in a new[effort.by_model]table inconfig.toml— mirroring the existing[models].defaultpersistence pattern — and restores it at startup and on/modelswitch. Restoration always re-validates the stored label against the active model viasupported_efforts_for_model/model_params_for_effort, so a label likemaxis never applied to a model that can't support it (invalid entries are pruned and the model default is used). Storing the label rather than raw provider params lets it be re-mapped per active model.Made by Open SWE
References