v0.3.0

Highlights

Voters can now retract their vote on an ACTIVE question ("Change my answer") and recast it before the presenter closes the slide. The whole flow is status-gated end-to-end — the backend refuses retract once the question is CLOSED, and the voter UI hides the retract affordance the moment a close event lands.

Features

• Retract vote endpoint: DELETE /api/polls/{slug}/votes — status-gated, deletes the caller's vote on the active question and rebroadcasts the tally via SSE (VoteRetractedEvent).
• Voter UI: "Change my answer" button on the voted state — clears the per-(slug, questionId) localStorage flag and returns the picker.
• Shared client: ApiClient.retractVote(slug) in @slidev-polls/shared.

Fixes

• Vote disappears on slide back (this release's voter bug): PollView no longer blanket-clears the per-question already-voted localStorage flags on question-closed or on the no-active-question branch of initial load. After the presenter navigated off a poll slide and back, the voter UI flipped from "Answer recorded" to the Submit form even though the server still held the vote — that's gone.
• Retract race: backend re-checks QuestionStatus after the gated DELETE so a presenter closing the question while a retract is in flight no longer produces a false QUESTION_NOT_ACTIVE.
• Integration test constraint: VoteRepositoryImplDeleteByVoterIT.throws_question_not_active_when_question_closed now NULLs activated_at alongside the CLOSED status flip, matching the poll_questions_active_timestamp_ck constraint and the production close path.

Chores

• Bumped com.diffplug.spotless:spotless-maven-plugin to 3.5.1.

Artifacts

• Backend image: ghcr.io/asm0dey/slidev-polls:v0.3.0 (multi-arch — linux/amd64, linux/arm64).
• npm: @slidev-polls/shared@0.3.0, @slidev-polls/component@0.3.0.