svelte-kit-vice/docs/next-features.md

---
title: Next features — initiative registry
type: registry
audience: human + agent
authority: backlog of user-decided future initiatives — records scope, sequencing and dependencies; it does NOT record verdicts (those live in the RFCs / changelog / book-deviations when executed)
status: living — items enter by explicit user decision during audits and sessions; remove an item when it ships (and link where it landed)
created: 2026-07-06
---

# Next features — initiative registry

Rules of this file: one entry per initiative, dated, with its origin (which
audit/session raised it), its scope in one paragraph, and its dependencies.
Entries are **registered, not started** — starting one is a session decision.
Detail lives in the linked doc, never copied here.

## 1. Tonal-ramp contrast parity (measure, then construct) — 2026-07-06

**Origin**: A.7 follow-up (theming audit F). The on-solid pair is now computed
at generation with a single criterion ([`rfcs/rfc-color-engine.md`](./rfcs/rfc-color-engine.md)
§8, `eidos/lib/on-solid.ts`). M3 still guarantees more: contrast **by
construction across its whole tonal ramp** (container/on-container pairs at
fixed tone deltas — ΔT 40 ≈ 3:1, ΔT 50 ≈ 4.5:1). Our equivalent promises
(text-11 on bg-2/element-3, border-7 vs bg-2 at the 3:1 non-text floor, text
over composited soft surfaces a2/a3) rest on Radix-style curation, unmeasured.

**Stage 1 — pair-contract verification** (the A.7 pattern generalized): a
canonical table of slot pairs + floors (a user-decided doctrine session),
a measurement pass over pairs × 33 scales × 2 modes at generation
(`on-solid.ts` generalizes; the compositing math exists in `$color`), and the
resulting drift list goes to user verdicts (retune vs annotated exception).
Infrastructure is small; the fallout is the unknown.

**Stage 2 — by-construction generator**: `generateScale` solves each step's
luminance to satisfy Stage 1's pair table for ANY seed (given bg-2's Y, solve
text-11's minimum Y; invert to OKLCH at the step's chroma/hue). Only protects
seed-generated themes — covering the BASE theme requires the base→seeds
migration already planned in [`rfcs/rfc-color-engine.md`](./rfcs/rfc-color-engine.md)
§9, which is the expensive, visually-sensitive part and this stage's gate.

**Sequence**: Stage 1 first (it is the spec for Stage 2). No M3-style `on-*`
vocabulary expansion — our slots already encode the pairs; the table
formalizes them without inflating the namespace.

## 2. Per-theme palette-contrast cascade emission — 2026-07-06

**Origin**: A.7 execution. The per-instance `palette-contrast` cascade lives
in the STATIC foundation — one polarity for all themes. Today polarity is
computed per configured theme and unanimous (33/33 scales agree across
base-light/base-dark); on disagreement the `*-light` theme wins
(`computeLightSolidScales`, documented in
[`rfcs/rfc-color-engine.md`](./rfcs/rfc-color-engine.md) §8). **Trigger**: the
day a real configured theme disagrees on a scale's polarity, emit the cascade
per-theme instead of statically. Not before — no speculative machinery.

## 3. Component audit (post-system) — 2026-07-06

**Origin**: user decision during the theming audit — "de momento no tocamos
los componentes, merecen una auditoría adicional una vez que se haya resuelto
estas". Gate: the system-level audit (F/G) closes first. Registered items so
far, to seed its scope:

- **Named-styles adoption by controls** (from A.3): controls/recipes that
  hand-declare typography instead of consuming `--style-*` /
  size-bundle typography — likely by error, to be confirmed per component.
- **Letter-spacing bundle adoption**: ~34 recipes consume `font-size` /
  `line-height` from the size bundle but not `letter-spacing`; plus ~7 raw
  letter-spacing literals in component CSS.
- **Tier-A `data-depth` stamping coverage**: overlays that should stamp their
  plane (dialog / drawer / tooltip / menubar / combobox) per
  [`rfcs/rfc-depth.md`](./rfcs/rfc-depth.md) §5.
- **Calendar family → shared layer/archetype** (user design verdict,
  2026-07-07): the calendar-grid vocabulary (accent set, day geometry, the
  holiday/event marks fixed in audit B.2) becomes a FIRST-CLASS shared layer
  — today the family borrows it informally (measured: range-calendar
  consumes 79 `--calendar-*` tokens, month-grid 65, year-grid 65,
  date-range-picker 38, date-picker 4 — ~250 cross-component borrows), and
  **chronos will draw from it too** when its track lands. Materialization to
  decide at execution: a morfo part-archetype for the day cell (the 26-set
  grows) and/or a `calendar-surface` shared recipe à la list-surface
  (`--list-item-*` precedent). This supersedes "per-component composition
  repairs" for the B.2 borrowers: the marks reach the whole family through
  the shared layer instead.
- **Field family composition — segments under `[data-field]`** (user design
  verdict, 2026-07-07, audit B.1): segment height derives from the SIZE axis
  at the FIELD family level — `field` recipe declares `segment-height` with
  size-scoped declarations (`calc(var(--field-control-height-{k}) -
  var(--space-2))`; the TSC `size:` scope axis exists, unused so far), and
  the per-component copies die (each x-field today re-declares the whole
  `height-{xs..xl}` family the field recipe already has). **MANDATED by the
  B.1-(i) verdict**: date/time/color-field MUST incorporate the Field
  wrapper (segments under `[data-field][data-size]` — probed live: today
  they don't) as part of the component audit; the three broken
  per-component `segment-height` tokens and their consumers were removed
  (they had computed `auto` since birth — zero visual change).
- Whatever F/G registers as "component-level adoption gap" in
  `docs/audit/theming-audit.md` when that report lands (deliverable G of the
  2026-07 theming audit).

## 4. `architecture/sema.md` hold-sync — 2026-07-06

**Origin**: A.4/A.5 execution (holds single-source). `SEMA_HOLDS_BY_INTENT`
(`src/uix/sema/holds.ts`) is now THE only hold table (resolver + visual
channel consume it; `sema-map.ts`'s per-family hold column died). The chapter
[`architecture/sema.md`](./architecture/sema.md) still narrates per-family
holds in ~34 places. **Blocked**: the file is the author's WIP (uncommitted
edits) — sync it when the author's pass lands, not before.

## 6. THM-2 rollout — per-instance palette to all surfaces — SHIPPED 2026-07-12

Shipped in `05f0031c` (media-player Batch-4 + 14 surfaces + vocab + 4 props)
and `cc7e9a16` (avatar root). Every per-component palette cascade now collapses
into the shared `--palette-*` layer (size win, behavior-preserving for roles);
the vocabulary gained the alpha `surface`/`surface-hover` + `hover` slots. The
`color` prop was widened to `ComponentColor` (roles + 33 scales) where arbitrary
color is meaningful (badge, tag-group, tags-input, toggle-group; button/toggle/
card already had it); semantic controls (checkbox/radio/stepper/editable/select/
file-upload) stay role-restricted by design. Full detail + the per-component
verification: the plan's §THM-2 block.

**Deliberate scope boundary — `Avatar.Badge` is OUT of the per-instance scale
palette, by design** (aligned with the ecosystem): a status badge takes a
role/intent (online→affirm, alert→threat) or a direct CSS color — MUI/Spectrum/
Bootstrap use semantic status colors, Chakra/Mantine/Ant use a direct color; NO
framework routes an avatar's status badge through a brand-scale palette. So the
badge keeps its role palette + custom-CSS; migrating it (per-part forward + ~36
orphan prunes) would exceed the convention. Not debt — a design decision.

## 5. Book editorial note — "el hold es suelo, no tijera" — 2026-07-06

**Origin**: A.4/A.5 verdict. The mechanism (hold = floor for the expression,
never a scissor; expression waits animation-finish after the hold, capped by
an absolute `MAX_EXPRESSION_WAIT_MS`, never derived from the hold) is recorded
in [`decisions/book-deviations.md`](./decisions/book-deviations.md) D.12 as a
candidate **editorial appendix** for the book (*Diseñando lo que ocurre*,
HOMOGENEIZADO edition) — the book gives qualitative regions and this is the
materialization doctrine worth feeding back to the source.