Part Begin of the insertion3End of the insertion Begin of the deletion 2End of the deletion of 5 of the text transform API for the description Begin of the insertionassistant, in review order dev → AI-133 → AI-135 → AI-134. ExposesEnd of the insertion Begin of the deletion assistant. AnswersEnd of the deletion "which actions may run Begin of the insertionhere" to the editor as API v3 endpoints. Pure API ticketEnd of the insertion on Begin of the insertiontop of AI-135, which owns the availability rulesEnd of the insertion Begin of the deletion this work package"End of the deletion and Begin of the deletion exposesEnd of the deletion the Begin of the insertiongateway port; nothing later inEnd of the insertion Begin of the deletion answer toEnd of the deletion the Begin of the insertionstack dependsEnd of the insertion Begin of the deletion editor. No code dependencyEnd of the deletion on Begin of the insertionthis ticket.End of the insertion Begin of the deletion part 1, stacked only for a linear review order.End of the deletion

Begin of the insertionBranch `implementation/ai-134-resolve-available-text-transform-actions-an`, PR #25169 (base: the AI-135 branch).

End of the insertion ## Scope

Begin of the insertion* Three API v3 `GET` endpoints returning the available actions asEnd of the insertion Begin of the deletion - Availability service for an `AI::TextTransformAction` againstEnd of the deletion a Begin of the insertionHAL collection of `AITextTransformAction` (`id`, `label`, `position`, `injectsTypeTemplate`), ordered by position:
* `/api/v3/ai_text_transform_actions`: no context, logged-in user, `everywhere` actions only.
* `/api/v3/work_packages/:id/ai_text_transform_actions`: existingEnd of the insertion work Begin of the insertionpackage, requires `edit_work_packages`.
* `/api/v3/projects/:id/ai_text_transform_actions?typeId=`: new,End of the insertion Begin of the deletion package or, forEnd of the deletion unsaved work Begin of the insertionpackage ofEnd of the insertion Begin of the deletion packages,End of the deletion a Begin of the deletion type: action `active`, `usage_scope` matches the type, actions with `injects_type_template` require a non-blank `default_work_package_description` on theEnd of the deletion type Begin of the insertionenabled in the project, requires `add_work_packages`.End of the insertion Begin of the deletion variant, assistant setting and feature flag on, LLM available.End of the deletion
Begin of the insertion* FilteringEnd of the insertion Begin of the deletion - LLM availabilityEnd of the deletion is Begin of the insertiondone entirely by `AI::TextTransforms::Availability#actions_for` from AI-135 (active, usage scope vs. type, template present for `injects_type_template`, feature flag, setting,End of the insertion Begin of the deletion asked through a smallEnd of the deletion gateway Begin of the insertionreadiness). The client applies no logic.End of the insertion Begin of the deletion port (`available?`). This part ships a null implementation that always answers "not available"; the real one comes in part 5.End of the deletion
Begin of the insertion* End of the insertion Begin of the deletion - API v3 `GET` endpoint for a work package or a type returning `[{ id, label, position }]` ordered by position.End of the deletion Empty Begin of the insertioncollection,End of the insertion Begin of the deletion list,End of the deletion not an error, when the assistant is Begin of the insertionunavailable. Until AI-137 replacesEnd of the insertion Begin of the deletion off. RequiresEnd of the deletion the Begin of the insertionnull gateway this is alwaysEnd of the insertion Begin of the deletion edit permission onEnd of the deletion the Begin of the insertioncase.End of the insertion Begin of the deletion work package or the add permission for new ones.End of the deletion
Begin of the insertion* Representer and collection representer, path helpers, OpenAPI docs with a new `AI` tag,End of the insertion Begin of the deletion - Unit specs for the availability matrix,End of the deletion request specs for Begin of the insertionall three endpoints and a representer spec.End of the insertion Begin of the deletion the endpoint.End of the deletion

## Notes

Begin of the insertion* AI-98 is merged:End of the insertion Begin of the deletion - ReuseEnd of the deletion the `ai_text_transform_actions` feature flag and the `ai_text_transform_actions_enabled` setting Begin of the insertionexist on dev and are only read here.End of the insertion Begin of the deletion from AI-98. Whichever PR lands second rebases the setting definition.End of the deletion
Begin of the insertion* No services, models or workersEnd of the insertion Begin of the deletion - Keep type vs. variant scopingEnd of the deletion in Begin of the insertionthis ticket; `Context`, `Availability`, `Gateway`, `NullGateway`, `Errors`, `Cancelled` andEnd of the insertion Begin of the deletion one method:End of the deletion the Begin of the insertion`FakeGateway` spec double comeEnd of the insertion Begin of the deletion action is scoped by type, the template comesEnd of the deletion from Begin of the insertionAI-135.
* Repo deviations fromEnd of the insertion the Begin of the insertionhand-off: anonymous access answers 401, a missing `typeId` answers 400.End of the insertion Begin of the deletion variant.End of the deletion