v0.20.0 - First-party UI/UX closed loop (vNext)

v0.20.0 - First-party UI/UX closed loop (vNext)

Released 2026-08-15.

Major: implements the complete vNext capability matrix resolved by Wayfinder
map #23 — interactive requirement shaping, tool-neutral design decisions,
dual-track implementation review, evidence gates, recirculation, and
cross-run learning — delivered as slices S1-S6 in one unified release
(PR #42). Spec authority: docs/specs/ui-ux-vnext/.

Tiered run profiles (process weight scales with consequence)

• Every run is graded P1 point-fix / P2 standard / P3 full by
  declaration-touch surface, recorded in a mandatory run-profile block at
  the top of plan.md; promotion is automatic, demotion is user-only.
• P1 covers single-finding repairs (including line-level R2 backfills)
  without opening a shaping session; P3 carries the full gate matrix.

Rule registry and governance

• skills/design-playbook/references/rules.md: unified first-party
  registry (13 entries — CRAFT-01..08 migrated with zero ID breakage,
  A11Y-01/RESP-01 first-party, I18N/PERF/SEC placeholders), G8-validated at
  product level and (per tier) at run level.
• craft-guard detector tables migrate atomically to the seven-column
  three-state format; the historical N/A contradiction is fixed by splitting
  applicability from result. Historical run artifacts are never rewritten.
• rules-governance.jsonl: append-only governance log; promotion to
  machine-enforced and exemptions are user-only decisions.
• Learning candidates derive purely from run history
  (3 distinct runs, 2 task contexts, 0 unexplained false positives).

Interactive requirement shaping

• Stateful S0-S6 session model with batched confirmation points
  (question caps, forced-to-assume after two unproductive batches);
  assumed fields age into mandatory questions after two acknowledged runs.
• Session artifacts are append-only under <run>/shaping/ with an
  alive→archived→discardable lifecycle; the contract stays the sole
  persistent decision authority (zero-breaking v1 extension).

Dual-track review and evidence

• Product track (per-AC supported/unsupported/unverifiable), interaction
  track (seven dimensions with a strict fact/judgment split — judgment
  findings are advisory and never block without user escalation), and a
  cross-cutting applicability matrix (accessibility + responsive in the
  first version; placeholders never skip silently).
• Six-block point-back report with coverage statements (G11) and
  five-state×page sampling matrices (required at P3).
• Manifest entries carry optional method-semantics keys; human-subject
  evidence without population/ethics is quarantined and cannot support a
  pass.

Recirculation machine-checked

• Repair-round counting with two-round stop → escalated-stop narration
  (verdict values unchanged).
• G12 tier-boundary gate reuses the G7 contract diff; tier violations
  escalate the run instead of being waivable.
• R1-R5 routing, DD supersedes re-entry, and baseline-drift re-review
  narrate through run-status with minimal invalidated-evidence sets.

Design decisions (tool-neutral)

• decision-report deepens into versioned DD entry blocks behind the
  unchanged Fill-facing header; exploration is tiered record/compare/explore
  (R/C/E); providers are replaceable data-contract adapters whose assets
  are reference-only.

Breaking

• Severity legacy values high (blocking)|high|med|low are no longer
  legal (two-stage migration completed; ADR-0028). Write the axis values
  directly; re-checking pre-vNext run artifacts will correctly fail.

Verification

• Independent dual-track review (product + interaction + cross-cutting):
  verdict Pass, zero blocking findings; four advisory findings fixed in-PR.
• Full local matrix green (validate, doctor, run seam, 16 root suites,
  MCP stdio groups, doc links); CI Validate plugin pass; dogfood P3
  fixture passes the full chain under --strict.