docs: sync v0.3.0 README to main

[aptracebloc]

Brings main's README in line with the v0.3.0 release. The release PR #57 merged + was tagged before the README prep (#58) landed on develop, so main's README still reads "v0.2.0". This is a README-only sync — the single delta commit is docs: prep README for v0.3.0 (#58).

Now accurate on main: "v0.3.0 is released", dataset list in the Status + Roadmap, the stale v0.1.0 artifacts link fixed, and list dropped from "Next".

No code change — the binary isn't affected, so this doesn't strictly need its own tag (cut a v0.3.1 only if you want the docs reflected in a release).

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Merge via merge commit (develop→main convention), not squash.

🤖 Generated with Claude Code

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Note

Low Risk
Documentation-only README edits with no runtime or security impact.

Overview
Updates README.md on main so release messaging matches v0.3.0 after the tag landed before the docs prep on develop.

Status now calls out v0.3.0, dataset list, and home-screen/output polish; the signed-binary link points at v0.3.0 instead of the stale v0.1.0 artifact reference. Roadmap records v0.3.0 (#53, #52, #56) and drops dataset list from Next since it shipped.

No application or CLI code changes—documentation only.

^{Reviewed by Cursor Bugbot for commit 7b9da1b. Bugbot is set up for automated code reviews on this repo. Configure here.}

[LukasWodka]

👋 Heads-up — Code review queue is at 16 / 8

Above the WIP limit. The team convention is to review existing PRs before opening new work.

Open PRs currently in Code review (oldest first):

• averaging-service#102 — chore(kanban): declare staging as prod-truth branch via .kanban.yml · author: @LukasWodka · no reviewer assigned
• averaging-service#103 — fix(averaging): correctness foundations — DP, shape guard, sklearn weighting, bounded ensembles (#73) · author: @LukasWodka · reviewer: @shujaatTracebloc
• averaging-service#98 — ci: add fr-gate caller workflow · author: @LukasWodka · no reviewer assigned
• backend#732 — feat(experiments): add per-experiment aggregation_strategy field (#730) · author: @LukasWodka · reviewer: @saqlainsyed007, @shujaatTracebloc
• client#207 — test(charts): add helm-unittest suite for ingestion-authz-configmap · author: @saadqbal · no reviewer assigned
• data-ingestors#146 — test(schema): lock category enum to the engine's TaskCategory (anti-drift) · author: @LukasWodka · reviewer: @saadqbal
• data-ingestors#148 — Develop to prod · author: @divyasinghds · reviewer: @saadqbal
• docs#47 — docs(environment-setup): #192 namespace/workspace flow (hold for client#192) · author: @LukasWodka · reviewer: @saadqbal
• docs#53 — docs: repoint old Setup Guide redirects · author: @LukasWodka · no reviewer assigned
• frontend-app#499 — ci: add Vitest + Cypress test workflow · author: @LukasWodka · reviewer: @aptracebloc

Pull from review before opening new work. (This is a nudge from the kanban WIP check, not a block.)