HS tests: scrape v0.9.90 upstream in full, flip silent stubs to loud SKIPs

- scrape-hs-upstream.py: new scraper walks /tmp/hs-upstream/test/**/*.js
  and emits body-style records for all 1,496 v0.9.90 tests (up from 831).
  Widens coverage into 66 previously-missing categories — templates,
  reactivity, behavior, worker, classRef, make, throw, htmx, tailwind,
  viewTransition, and more.

- build-hs-manifest.py + hyperscript-upstream-manifest.{json,md}:
  coverage manifest tagging each upstream test with a status
  (runnable / skip-listed / untranslated / missing) and block reason.

- generate-sx-tests.py: emit (error "SKIP (...)") instead of silent
  (hs-cleanup!) no-op for both skip-listed tests and generator-
  untranslatable bodies. Stub counter now reports both buckets.

- hyperscript-feature-audit-0.9.90.md: gap audit against the 0.9.90
  spec; pre-0.9.90.json backs up prior 831-test snapshot.

New honest baseline (ocaml runner, test-hyperscript-behavioral):
  831 -> 1,496 tests; 645 -> 1,013 passing (67.7% conformance).
  483 failures split: 45 skip-list, 151 untranslated, 287 real.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

spec/tests/hyperscript-feature-audit-0.9.90.md

@@ -0,0 +1,446 @@
+# _hyperscript 0.9.90 Gap Audit
+
+**Date:** 2026-04-22
+**Target release:** upstream 0.9.90 (2026-04-13), with awareness of 0.9.91 bugfixes (2026-04-14)
+**Supersedes:** `hyperscript-feature-audit.md` (2026-04-09)
+
+Our implementation lives in `/root/rose-ash/lib/hyperscript/`:
+- `tokenizer.sx` (618 lines), `parser.sx` (2414 lines), `compiler.sx` (1739 lines), `runtime.sx` (1609 lines), `integration.sx` (109 lines).
+
+Tests in `spec/tests/test-hyperscript-*.sx` + extracted fixture `hyperscript-upstream-tests.json` (831 entries).
+
+---
+
+## 1. Version alignment
+
+### What release is our JSON snapshot from?
+
+The fixture `spec/tests/hyperscript-upstream-tests.json` and the prior audit were both written on **2026-04-09** (four days before 0.9.90 tagged on 2026-04-13). File timestamps confirm this; there is no earlier git history for the JSON (it first appears in commit `7492ceac`).
+
+The contents are clearly **0.9.90 (pre-tag) or equivalent**:
+
+- 63 `on` tests, 44 `bind`, 41 `when`, 23 `live`, 10 `liveTemplate`, 19 `component`, 4 `reactive-properties` — all new-in-0.9.90 reactivity features
+- 10 `morph`, 8 `reset`, 13 `empty`, 10 `dialog`, 4 `swap`, 7 `halt`, 5 `askAnswer`, 3 `focus`, 8 `scroll`, 23 `fetch` including `fetch:beforeRequest`/`fetch:error` lifecycle — all 0.9.90 features or overhauls
+- Keywords `between`, `ignoring` (case), `precedes`/`follows`, `where`, `sorted`/`mapped`/`split`/`joined by` — 0.9.90 collection expressions
+- Total 831 tests vs upstream's "~1332 tests" claim for 0.9.90 — we have the subset that was non-sinon, non-script-tag, non-dialog-API when extracted
+
+**Conclusion:** the JSON is a valid 0.9.90-era snapshot. No re-extraction is strictly required, but upstream added tests post-tag (changelog mentions 1332 tests at 0.9.90 release) — we may be missing late additions.
+
+### What 0.9.90 added over 0.9.8 / 0.9.14
+
+Full changelog consulted at `github.com/bigskysoftware/_hyperscript/blob/master/CHANGELOG.md`.
+
+**Breaking changes in 0.9.90:**
+- `processNode()` → `process()`
+- `as JSON` now parses a string; old stringify behavior → `as JSONString`; `as Values | JSONString` / `as Values | FormEncoded` replace `Values:JSON` / `Values:Form`
+- `default` uses **nullish** check (no longer overwrites `0`/`false`)
+- `go to url ...` deprecated → `go to /path` or `go to "url"`
+- `go to the top of ...` deprecated → `scroll to the top of`
+- `async` keyword removed (was confusing)
+- `/* */` block comments removed
+- `transition width` → `transition *width` (explicit `*` style ref)
+- `fetch` throws on non-2xx by default; `do not throw` or `as Response` restores old behavior
+- `[@attr]` bracket-style attribute access **deprecated** (still parsed, use `@attr`)
+
+**New features in 0.9.90:**
+- **Reactivity** (`live`, `when ... changes`, `bind`) — dependency tracking + UI updates
+- **Templates in core** — `render` command + `<template>` elements + `${}` interpolation + `#for`/`#if`/`#else`/`#end`
+- **`morph`** command (idiomorph-based DOM morph)
+- **Components system** — `<template component="name">` custom elements with slots
+- **DOM-scoped variables** (`^name`)
+- `open` / `close`, `focus` / `blur`, `empty` / `clear`, `reset`, `swap`, `select`, `ask` / `answer`, `speak`, `breakpoint`
+- **`toggle between`** attributes: `toggle between [@data-state='active'] and [@data-state='inactive']`
+- **`toggle x between a, b and c`** N-way cycle
+- **Collection expressions**: `where`, `sorted by`, `mapped to`, `split by`, `joined by`
+- **Magic symbols**: `clipboard`, `selection`
+- `on resize` (ResizeObserver), `on first click` (one-shot)
+- `view transition` command (View Transitions API)
+- `intercept` feature (service-worker DSL)
+- **Pipe operator** `|` for chained conversions (`as Values | JSONString`)
+- `repeat ... until x end` / `repeat ... while x end` (bottom-tested)
+- `ignoring case` modifier on comparisons
+- `between`, `starts with`, `ends with` comparisons
+- `put null into @attr` removes attribute
+- DOM expressions (`#id`, `.class`, `<sel/>`) are writable via `.replaceWith()`
+- `set arr to arr + [1, 2]` array concatenation
+- `cleanup()` API + `hyperscript:before/after:init` / `:cleanup` lifecycle events + `data-hyperscript-powered`
+
+**0.9.91 bugfixes** (worth tracking):
+- `on resize from window/document` falls through to native resize (not ResizeObserver)
+- `toggle ... for <duration>` no longer consumes a following `for-in`
+- `${}` template hang fix (debug log leftover)
+
+---
+
+## 2. Category coverage gap
+
+Our behavioral test file `test-hyperscript-behavioral.sx` contains 67 `defsuite` blocks covering 52 unique JSON categories. The file has **831 `eval-hs` calls matching the 831 JSON entries** — every upstream test **has** a behavioral entry, but **89 of them are replaced with safe no-op / `NOT-IMPLEMENTED` stubs** (commit `71cf5b84`).
+
+Per-category upstream size vs. stub count:
+
+| Category | Upstream tests | Stubs in behavioral | Simple-clean upstream (estimate) | Status |
+|----------|---------------:|-------------------:|--------:|--------|
+| on | 63 | 32 | ~30 | many non-simple (event queue / debounced / throttled / intersection / mutation) |
+| bind | 44 | ~44 | 1 | almost entirely new-0.9.90, not implemented |
+| when | 41 | ~36 | 5 | `when ... changes` reactivity mostly missing |
+| comparisonOperator | 40 | ~36 | 4 | `starts with` / `ends with` / `between` / `ignoring case` mostly missing |
+| put | 38 | 8 | 37 | implemented; stubs are complex positional forms |
+| toggle | 30 | 2 | 28 | strong coverage |
+| repeat | 30 | 4 | 23 | `break` / `continue` / `until` now work (recent commits) |
+| def | 27 | 7 | 3 | basic only; async/catch variants partial |
+| set | 25 | 7 | 24 | strong; stubs are array-concat and rare forms |
+| dom-scope | 25 | — | 23 | 23/25 upstream simple — `^var` works |
+| transition | 23 | 1 | 22 | strong |
+| live | 23 | — | 0 | 0/23 clean-simple — **reactivity runtime missing** |
+| fetch | 23 | 3 | 6 | 11/23 passing per recent commit `5c66095b`; sinon-required tests stubbed |
+| collectionExpressions | 22 | — | 5 | `where` / `sorted by` / `mapped to` / `split by` / `joined by` — **new 0.9.90, mostly missing** |
+| increment | 20 | — | 20 | full |
+| if | 19 | — | 18 | full |
+| component | 19 | — | 14 | 14/19 simple — `<template component>` custom-element bridge missing on JS host |
+| add | 19 | 4 | 18 | full minus `[@attr]` / `{css}` forms |
+| asExpression | 17 | — | 0 | 0/17 simple — `as JSON/JSONString/FormEncoded` + pipe operator missing |
+| remove | 14 | 4 | 12 | strong |
+| hide | 14 | — | 14 | full |
+| bootstrap | 14 | — | 2 | 2/14 simple — lifecycle events / `cleanup()` / `data-hyperscript-powered` not covered |
+| empty | 13 | — | 12 | full (recent commit `802ccd23`) |
+| append | 13 | 5 | 13 | strong |
+| take | 12 | — | 12 | full |
+| tell | 10 | 6 | 10 | parses; stubs are the multi-statement tell variants |
+| morph | 10 | — | 4 | 4/10 simple — string target variant works, element-target variants stubbed |
+| liveTemplate | 10 | — | 7 | 7/10 simple — **no implementation of `<template>` + `#for`/`#if`** |
+| dialog | 10 | 1 | 5 | 5/10 simple — dialog `open`/`close` partial |
+| default | 9 | — | 9 | full |
+| send | 8 | — | 8 | full |
+| scroll | 8 | — | 0 | 0/8 simple — **`scroll to` command not implemented** |
+| reset | 8 | — | 8 | full (recent commit `802ccd23`) |
+| evalStatically | 8 | — | 0 | 0/8 simple — **static eval API not exposed** |
+| assignableElements | 8 | — | 3 | partial |
+| wait | 7 | — | 7 | full |
+| splitJoin | 7 | — | 0 | 0/7 simple — `split by` / `joined by` absent |
+| pick | 7 | — | 0 | 0/7 simple — regex/char/item pick missing |
+| parser | 7 | — | 3 | partial |
+| halt | 7 | — | 6 | full (recent commit `802ccd23`) |
+| call | 6 | 7 | 5 | partial — `call functions that return promises` stubbed |
+| no | 5 | — | 1 | `no <expr>` predicate mostly missing |
+| mathOperator | 5 | — | 0 | 0/5 simple — `mod`/`abs` + async math promise-aware ops missing |
+| go | 5 | — | 3 | basic `go to` works; new `scroll to` form missing |
+| askAnswer | 5 | — | 0 | 0/5 simple — `ask` / `answer` not parsed |
+| swap | 4 | — | 4 | full |
+| socket | 4 | — | 0 | extension, out of scope |
+| select | 4 | — | 0 | 0/4 — `select` command not parsed (only compiler stub) |
+| relativePositionalExpression | 4 | — | 0 | 0/4 — `first in`, `last in`, `random in` collection-relative expressions missing |
+| reactive-properties | 4 | — | 0 | 0/4 — property-reactivity runtime not present |
+| log | 4 | — | 4 | full |
+| resize | 3 | — | 0 | 0/3 — `on resize` synthetic event missing |
+| logicalOperator | 3 | — | 0 | 0/3 — async-safe `and`/`or` promise propagation absent |
+| init | 3 | — | 1 | partial |
+| focus | 3 | — | 0 | 0/3 — `focus` / `blur` commands not wired |
+| closest | 3 | — | 1 | partial |
+| show | 2 | — | 2 | full |
+| measure | 2 | — | 0 | 0/2 — `measure` command stubbed |
+| asyncError | 2 | — | 0 | 0/2 — async error propagation |
+| settle | 1 | — | 1 | full |
+| scoping | 1 | — | 1 | — |
+| queryRef | 1 | — | 0 | `<sel/>` selector refs — tokenizer skips |
+| objectLiteral | 1 | — | 0 | JS-object literal in hyperscript expression missing |
+| js | 1 | — | 1 | `js ... end` inline JS — we parse but don't emit real JS (no JS host) |
+| in | 1 | — | 0 | `in` collection op missing |
+| cookies | 1 | — | 0 | `cookies.name` magic symbol missing |
+| attributeRef | 1 | — | 0 | `@attr` attribute-ref expressions |
+
+**Categories with 0 simple-clean coverage** (highest priority): `asExpression` (17), `splitJoin` (7), `pick` (7), `mathOperator` (5), `askAnswer` (5), `scroll` (8), `evalStatically` (8), `socket` (4), `select` (4), `relativePositionalExpression` (4), `reactive-properties` (4), `resize` (3), `logicalOperator` (3), `focus` (3), `measure` (2), `asyncError` (2), `queryRef` (1), `objectLiteral` (1), `in` (1), `cookies` (1), `attributeRef` (1), **`live` (23)**, **`bind` (43)**, **`collectionExpressions` (17)**.
+
+---
+
+## 3. Feature gaps (parser / compiler / runtime)
+
+### Commands
+
+| Command | tokenizer | parser | compiler | runtime | Notes |
+|---------|:-:|:-:|:-:|:-:|-------|
+| add | yes | yes | yes | yes | complete minus `[@attr]` / `{css-block}` forms (new 0.9.90 block-CSS added in `b23da319` ✓) |
+| remove | yes | yes | yes | yes | as above |
+| toggle | yes | yes | yes | yes | inc. `between` and N-way `cycle` (commit `00bf13a2`) |
+| set | yes | yes | yes | yes | array concat form (`set a to a + [1]`) untested |
+| put | yes | yes | yes | yes | most positional forms |
+| append | yes | yes | yes | yes | landed `c8aab54d` |
+| prepend | **no** | **no** | **no** | **no** | not a 0.9.90 core command — only `insert before` via `put`, ignore |
+| transition | yes | yes | yes | yes | inc. possessives |
+| show / hide | yes | yes | yes | yes | `when` clause on `hide` (new 0.9.90) untested |
+| wait / settle | yes | yes | yes | yes | via `perform` IO suspension |
+| send / trigger | yes | yes | — | partial | `send` lands in compiler dispatch; `trigger` alias |
+| call / get | yes | yes | yes | partial | `call functions that return promises` stubbed |
+| log | yes | yes | — | partial | behavior OK |
+| fetch | yes | yes | yes | yes | 11/23 passing; non-2xx `throw` + `as Response` + `do not throw` missing |
+| throw | yes | yes | yes | yes | `raise`-based |
+| continue / break | yes | yes | yes | yes | landed `f200418d` |
+| return / exit | yes | yes | yes | yes | guard-based (commit `97818c6d`) |
+| halt | yes | yes | yes | yes | modes landed `922e7a78` |
+| repeat | yes | yes | yes | yes | `forever`, `while`, `until`, `times`, `for-in`, `index` |
+| for | yes | yes | yes | yes | alias of `repeat for` |
+| if / unless / else / end / then / with | yes | yes | yes | yes | `unless` recognized but not parsed as separate — unchanged from prior audit |
+| js | yes | (no) | (no) | (no) | embedded JS — we can't execute JS without a JS host |
+| go | yes | yes | yes | yes | basic `go to <path>`; `go to the top/bottom of` **deprecated** in 0.9.90 — replaced by `scroll to` |
+| scroll | yes | yes | yes | partial | `scroll to the top/bottom of` — parser has 2 hits, but **0/8 simple tests pass** — runtime likely does not dispatch all forms |
+| push/pull state | no | no | no | no | history API — not in 0.9.90 core docs either |
+| pick | yes | yes | yes | yes | landed `41cfa562`; 0/7 simple — pick command needs item/char/regex runtime |
+| render | yes | yes | — | — | parser has 8 hits but NO compiler emit — **`render` + `<template>` interpolation not implemented** |
+| make | yes | yes | yes | yes | `hs-make` + `hs-make-object` |
+| increment / decrement | yes | yes | yes | yes | full |
+| measure | yes | yes | yes | partial | 0/2 — runtime stub incomplete |
+| tell | yes | yes | — | partial | parses, compiler handles single-cmd tell |
+| take | yes | yes | yes | yes | full |
+| focus | yes | yes | — | — | parser has 2 hits; **no compiler emit, 0/3 simple pass** |
+| blur | **no** | **no** | **no** | **no** | 0.9.90 addition, absent |
+| hide the / show the | — | — | — | — | alt grammar variant; not tracked separately |
+| beep! | yes | yes | yes | yes | (runtime no-op) |
+| trim / cut / copy / paste | **no** | **no** | **no** | **no** | clipboard magic symbols + commands absent |
+| media | **no** | **no** | **no** | **no** | not in 0.9.90 core |
+| dialog | **no keyword** | yes | yes | partial | parser parses dialog-open/close forms, 5/10 simple pass; commit `802ccd23` recent |
+| morph | yes | yes | yes | yes | landed `5b0c8569`; 4/10 simple |
+| empty / clear | yes | yes | yes | yes | landed `802ccd23` |
+| reset | yes | yes | yes | yes | landed (form reset `9d246f5c`) |
+| swap | yes | yes | — | partial | tokenizer has it; compiler dispatch missing — 4/4 simple currently pass? (verify) |
+| open / close | yes | yes | yes | partial | dialog/details/popover/fullscreen variants |
+| select | yes | yes | partial | partial | parser + compiler dispatch; `select` command 0/4 simple — runtime not complete |
+| ask / answer | **no** | **no** | **no** | **no** | 0/5 simple — new 0.9.90, absent |
+| speak | **no** | **no** | **no** | **no** | 0.9.90 addition, absent (Web Speech API) |
+| breakpoint | **no** | **no** | **no** | **no** | 0.9.90 addition, absent |
+| view transition | no | no | no | no | 0.9.90 addition, absent |
+| intercept | no | no | no | no | 0.9.90 service-worker DSL, out of scope |
+
+### Expressions / operators
+
+| Expression | Status | Notes |
+|------------|--------|-------|
+| `me`, `my`, `it`, `its`, `result`, `event`, `detail`, `target` | **yes** | tokenizer & parser |
+| `that` | **no** | not in tokenizer — uncommon, low priority |
+| `element` | partial | parser has 1 hit |
+| `body`, `document`, `window` | **no** | not tokenized — **high-value gap** for e.g. `on resize from window` |
+| `you`, `yourself`, `sender` | partial | `you`/`sender` tokenized, not parsed |
+| `response` | **no** | fetch response magic — used in error handlers |
+| `clipboard`, `selection` | **no** | 0.9.90 additions |
+| `first/last/random in` | partial | tokens; `random` has 1 parser hit — 0/4 relativePositionalExpression tests pass |
+| `closest` | yes | 1/3 simple |
+| `next`, `previous` | yes | tokenized |
+| `parent of`, `children of` | **no** | **not tokenized — parent/children expressions missing** |
+| class ref (`.foo`), id ref (`#foo`) | yes | tokenizer handles |
+| selector ref (`<sel/>`) | partial | tokenizer has `<` but not `/>` closer — **88 JSON tests use this** |
+| attribute ref (`@attr`) | yes | but `[@attr]` bracket form deprecated — we likely have mixed support |
+| style ref (`*prop`) | yes | parser has 7 hits |
+| CSS block (`{color: red}`) | **no** | — **19 JSON tests use this** |
+| string interpolation `${...}` | **no** | — **21 JSON tests use this** |
+| time refs (`1s`, `1ms`) | yes | parse-duration |
+| math `+ - * /` | yes | via evaluator |
+| `mod` | yes tok | 0/5 simple — runtime doesn't propagate promises |
+| `abs` | **no tok** | absent |
+| floor/ceil/round | **no** | absent as hyperscript keywords (only via JS interop) |
+| `is` / `is not` / `==` | yes | |
+| `matches` / `contains` | yes | inc. ignore-case (`ef5faa6b`) |
+| `starts with` / `ends with` | yes | parser has both with ignore-case variants |
+| `between ... and ...` | yes | 9 parser hits; may not cover comparison form |
+| `precedes` / `follows` | yes | 3 parser hits each |
+| `ignoring case` | yes | 1 tokenizer hit; needs coverage per-primitive |
+| `in` / `not in` | yes-partial | 3 tests |
+| `empty` (predicate) | yes | |
+| `exists` | partial | dropped short-circuit (`ef5faa6b`); 1 parser hit |
+| `no <expr>` | partial | 1/5 simple |
+| `not`, `and`, `or` | yes | short-circuit async missing → 0/3 logicalOperator simple |
+| async `and`/`or` | **no** | **0/3 logicalOperator simple; needs promise propagation** |
+| `some` | partial | tokenized |
+| collection: `where` | yes tok | 1 parser hit — 0 working simple tests |
+| collection: `sorted by` / `sorted by desc` | yes tok | runtime `hs-sorted-by` / `-desc` present, not wired from parser for all forms |
+| collection: `mapped to` | yes tok | — |
+| collection: `split by` / `joined by` | yes tok | runtime `hs-split-by` / `hs-joined-by` present — 0/7 splitJoin simple |
+| type conversion `as Foo` | partial | 4/17 asExpression simple — `JSONString` / `FormEncoded` / **pipe `|`** absent |
+| pipe `|` for conversions | **no** | 0.9.90 addition |
+| ternary / `if ... else ...` expression | partial | command-form only |
+| object literal `{key: val}` | partial | 0/1 — special parser |
+
+### Event syntax / feature forms
+
+| Feature | Status | Notes |
+|---------|--------|-------|
+| `on <event>` | yes | core |
+| `on every <event>` | yes | `hs-on-every` |
+| `on <event> from <target>` | yes | inc. `window` / `document` textual — but **tokenizer lacks `window`/`document`** |
+| event queueing (`queue all/none/first/last`) | **no** | 0 parser hits for `queue` — new in 0.9.90-era polish |
+| `debounced at <duration>` | **no** | 0 parser hits |
+| `throttled at <duration>` | **no** | 0 parser hits |
+| `halt the event` / `halt bubbling` / `halt default` | yes | `mode` form in parser line 1953 |
+| `on <event> when <cond>` | yes | when-cond parser |
+| `on intersection` / `on mutation` observers | **no** | needs `IntersectionObserver`/`MutationObserver` wiring |
+| `on resize` (synthetic) | **no** | 0/3 resize tests; `ResizeObserver` adapter missing |
+| `on first <event>` | **no** | one-shot modifier |
+| `on load` / `init` | yes | in feat parser |
+| `on <event> in <selector>` | partial | delegation |
+| `behavior Name ... install <Name>` | yes (parsed) | behavior parsing at line 2390+ |
+| `def name(args) ... end` | yes | (commit `9d246f5c`) |
+| `worker` | **no** | extension, out of scope |
+| `live` feature | partial | tokenizer has `live`, parser 3 hits; **no reactivity runtime** → 0/23 live simple |
+| `bind` feature | **no** | tokenizer + parser both 0 hits — **biggest single feature gap** (44 upstream tests) |
+| `when <expr> changes` | partial | `changes` is tokenized; reactive wiring missing |
+
+### Scope
+
+| Feature | Status | Notes |
+|---------|--------|-------|
+| locals (`set x ...`) | yes | full |
+| element-scope (`me.x`, `my x`) | yes | `my`/`your` alias |
+| globals (`$x`) | yes | |
+| dotted names | yes | |
+| `local x` | partial | tokenized |
+| DOM-scope `^var` | yes | 23/25 simple — strong coverage |
+
+---
+
+## 4. Test complexity buckets we're NOT running
+
+| Bucket | Upstream count | Our coverage | What's missing |
+|--------|---------------:|-------------:|----------------|
+| `simple` | 469 | ~454 via behavioral (real) + ~89 stubs | 15 skipped for pattern reasons |
+| `evaluate` | 125 | **0** as evaluate-typed tests; some merged into behavioral | DOM-mutation-after-eval tests — need real browser, not sandbox |
+| `run-eval` | 83 | **0 distinct** | Mixed run+eval — possible via sandbox with state reads |
+| `promise` | 57 | partial via `perform` | Async promise chains — we have IO suspension but no sinon stub |
+| `eval-only` | 39 | partial | Pure expression tests — easy to add (just run `eval-hs` and assert result) |
+| `script-tag` | 36 | **0** | `<script type="text/hyperscript">` bootstrap path — we don't simulate the script-tag loader |
+| `sinon` | 17 | **0** | Fetch stubs — our fetch tests mock via `host-*` server stubs, not sinon. 11/23 fetch pass, but the 17 sinon-specific tests aren't run |
+| `dialog` | 5 | partial | `<dialog>` element's `showModal()` / `close()` — needs dialog API mock |
+
+**What each bucket would need:**
+
+- **`eval-only` and `run-eval`** — cheapest wins. These just need `eval-hs` with result assertion. Missing infrastructure: none (we already have this in `test-framework.sx`). Gap is that the extractor tagged them `eval-only` so they weren't included in the "simple" migration.
+- **`evaluate`** — needs DOM mutation → DOM query. Our sandbox has mock DOM so most should be portable.
+- **`script-tag`** — needs script-tag loader: scan HTML for `<script type="text/hyperscript">`, compile and run. Separate from `_=` attribute bootstrap. Not hard — just a hook in integration.sx.
+- **`sinon`** — needs fetch mocking per-test. We have `host-*` server stubs globally. Fix: extend `hs-fetch` mock to support per-test route registration (some already done in `673be857`).
+- **`dialog`** — needs `HTMLDialogElement.showModal()` / `.close()` + `returnValue` attribute. Minimal mock.
+- **`promise`** — most already work via `perform`. The ones that don't involve `Promise.resolve(x)` wrapping in JS (`call functions that return promises`). Needs awaiter mock.
+
+---
+
+## 5. Pattern classes the tokenizer skips
+
+Global JSON counts (from `html + check + action` concatenation):
+
+| Pattern | Upstream tests using it | Upstream feature | Our parser |
+|---------|----------------------:|------------------|------------|
+| `[@attr="val"]` bracket attribute | 6 | **Deprecated in 0.9.90** — attribute-access/mutation syntax | tokenizer doesn't emit `[@` pair — 4 add, 4 toggle, 1 remove tests skipped |
+| `${...}` template interpolation | 21 | String interpolation in expressions and templates | Not tokenized — blocks all `live`/`liveTemplate`/`render` tests (~35 tests) |
+| `<sel/>` selector ref | 88 | Inline CSS-selector reference as a value | Tokenizer has `<` but no closing-slash detection |
+| `{prop:val;...}` CSS block | 19 | CSS-property block in `add`/`remove`/`toggle` | Tokenizer has `{`/`}` but no CSS-block parsing (partially landed `b23da319` for `add`; not for `remove`/`toggle`) |
+
+**Parser surface:**
+- Attribute ref `@foo` — yes (as expression), 1/1 simple attributeRef test still 0 pass → compiler/runtime gap
+- Selector ref `<sel/>` — tokenizer returns `"op"` for `/`, parser has no rule to assemble as a single value
+- String interp `${x}` — tokenizer returns `"str"` but doesn't split on `${...}`; no parser for expression embedding
+- CSS block — tokenizer consumes `{`/`}` as punctuation; no recognition of CSS-property list inside
+
+**Recommendation:**
+- `[@attr]` — since 0.9.90 deprecated it, don't invest
+- `${...}` — required for `live`, `liveTemplate`, `render`, `bind`. High priority
+- `<sel/>` — 88 tests blocked; large ROI. Tokenizer change + parser rule
+- `{css}` — already partially done; extend to `remove` / `toggle`
+
+---
+
+## 6. Summary table
+
+| Category | Upstream | Impl (parse+compile+run) | Simple tests passing | Gap class |
+|----------|---------:|:-----------------------:|--------------------:|-----------|
+| add | 19 | yes (minus `[@`/`{css}` forms) | 18 | skip patterns |
+| remove | 14 | yes | 12 | skip patterns |
+| toggle | 30 | yes (inc. between/cycle) | 28 | skip patterns |
+| set | 25 | yes | 24 | array-concat |
+| put | 38 | yes | 37 | complex positionals |
+| append | 13 | yes | 13 | — |
+| transition | 23 | yes | 22 | — |
+| show | 2 | yes | 2 | — |
+| hide | 14 | yes | 14 | — |
+| wait | 7 | yes | 7 | — |
+| send/trigger | 8 | yes | 8 | — |
+| call | 6 | partial | 5 | promise await |
+| fetch | 23 | partial | 11 | non-2xx throw, `do not throw`, pipe `|`, sinon |
+| throw/catch/finally | incl. def | yes | — | — |
+| if/unless/else | 19 | yes | 18 | — |
+| repeat | 30 | yes | 23 | `index`, `by` step |
+| for | — | yes | — | — |
+| def | 27 | partial | 3 | async/catch variants |
+| behavior/install | — | parses | — | — |
+| init | 3 | partial | 1 | immediate init variants |
+| increment/decrement | 20 | yes | 20 | — |
+| take | 12 | yes | 12 | — |
+| tell | 10 | partial | 10 | multi-stmt tell |
+| halt | 7 | yes | 6 | — |
+| empty/clear | 13 | yes | 12 | — |
+| reset | 8 | yes | 8 | — |
+| swap | 4 | partial-runtime | 4 | — |
+| open/close | — | partial | — | dialog/popover |
+| dialog | 10 | partial | 5 | dialog API mock |
+| morph | 10 | yes | 4 | element-target forms |
+| focus | 3 | **no** | 0 | not wired through compile |
+| **blur** | — | **no** | — | absent |
+| scroll | 8 | partial | 0 | runtime dispatch incomplete |
+| measure | 2 | partial | 0 | runtime stub |
+| pick | 7 | partial | 0 | runtime item/regex modes |
+| select | 4 | partial | 0 | select-command runtime |
+| **bind** | 44 | **no** | 1 | **reactivity runtime** |
+| **live** | 23 | **no** | 0 | **reactivity runtime** |
+| **when-changes** | 41 | partial | 5 | reactivity deps |
+| **reactive-properties** | 4 | **no** | 0 | property reactivity |
+| **liveTemplate** | 10 | **no** | 7 | `${}` + `<template>` |
+| **component** | 19 | partial | 14 | custom-element register |
+| dom-scope (`^var`) | 25 | yes | 23 | — |
+| **collectionExpressions** | 22 | partial | 5 | where/sorted/mapped/split/joined |
+| **comparisonOperator** | 40 | partial | 4 | starts/ends/between/ic async |
+| logicalOperator | 3 | partial | 0 | async and/or |
+| mathOperator | 5 | partial | 0 | mod/abs + async |
+| **asExpression** | 17 | partial | 0 | JSONString/FormEncoded + pipe |
+| **askAnswer** | 5 | **no** | 0 | `ask`/`answer` keywords |
+| **speak** | — | **no** | — | Web Speech API |
+| **breakpoint** | — | **no** | — | devtools breakpoint |
+| **intercept** | — | no | — | service-worker (out of scope) |
+| **view transition** | — | **no** | — | View Transitions API |
+| **resize** | 3 | **no** | 0 | ResizeObserver synthetic event |
+| bootstrap | 14 | partial | 2 | lifecycle events + cleanup() |
+| evalStatically | 8 | **no** | 0 | `_hyperscript.evaluate(...)` static API |
+| relativePositionalExpression | 4 | partial | 0 | `first in xs`/`last in xs` |
+| assignableElements | 8 | partial | 3 | — |
+| go | 5 | partial | 3 | `go to the top of` deprecated → `scroll to` |
+| in (operator) | 1 | partial | 0 | — |
+| no (predicate) | 5 | partial | 1 | — |
+| closest | 3 | partial | 1 | — |
+| cookies | 1 | **no** | 0 | `cookies.name` magic |
+| queryRef | 1 | **no** | 0 | `<sel/>` as value |
+| objectLiteral | 1 | partial | 0 | JS-object literal expr |
+| attributeRef | 1 | partial | 0 | `@attr` as expression |
+| js (inline) | 1 | parsed | 1 | — |
+| splitJoin | 7 | runtime-only | 0 | parser wiring |
+| asyncError | 2 | partial | 0 | async catch paths |
+| parser | 7 | partial | 3 | parse-error events |
+| scoping | 1 | yes | 1 | — |
+| settle | 1 | yes | 1 | — |
+
+### Top 5 priority gaps (by upstream test count × foundational weight)
+
+1. **Reactivity runtime (`bind` + `live` + `when...changes` + `reactive-properties`)** — blocks 112 upstream tests (44 + 23 + 41 + 4). Requires: dependency-tracked evaluation, signal graph per-element, change propagation, two-way binding with dedup. Foundational: unlocks templates and components. Needs `${}` string interp in parser.
+2. **`${...}` interpolation + `<template>` render + `#for`/`#if`/`#else` control flow (`render` + `liveTemplate`)** — blocks ~35 tests but is foundational for templating. Tokenizer change required (`${...}` inside strings); new `render-command` runtime; template AST with `#` tags.
+3. **Comparison + collection + conversion operator completion (`comparisonOperator` + `collectionExpressions` + `asExpression` + `splitJoin`)** — 86 tests. Already have primitives (`hs-split-by`, `hs-joined-by`, `hs-sorted-by`, `hs-starts-with-ic`, etc.) but parser doesn't wire them. Lower-risk plumbing work.
+4. **Missing simple commands: `focus`/`blur`, `scroll to`, `ask`/`answer`, `speak`, `breakpoint`, `select` (command), `measure`** — ~25 tests, and small per-command scope. `focus`/`blur` + `scroll to` alone unblocks 11 tests. `ask`/`answer` need `host-prompt`/`host-alert`/`host-confirm` IO effects.
+5. **Event syntax modifiers: `queue`, `debounced at`, `throttled at`, `on first`, `on resize`, `on intersection`, `on mutation`** — 0 parser hits for any of these. Each is small in scope but together they affect test realism. `on resize` with ResizeObserver synth is the most valuable (0.9.91 bug in this area).
+
+### Secondary gaps (foundational but lower-count)
+
+- **`body`/`document`/`window` magic symbols** — blocks `on resize from window` and many `scroll` tests. Add to tokenizer.
+- **`parent of` / `children of` expressions** — not tokenized. Easy win.
+- **Pipe operator `|`** — required for 0.9.90 chained conversions.
+- **`fetch` non-2xx throws + `do not throw` + `as Response`** — 0.9.90 breaking change; 12 fetch tests blocked.
+- **`cleanup()` API + lifecycle events** — needed for `bootstrap` suite (14 tests) and htmx 4 interop.
+- **Script-tag loader** — 36 tests in `script-tag` bucket blocked for want of a `<script type="text/hyperscript">` parser entry.
+
+### Non-priorities
+
+- `worker`, `socket`, `eventsource` — extensions, out of scope
+- `intercept` — service-worker DSL, out of scope
+- `view transition` — browser API, nice-to-have
+- `[@attr]` bracket form — deprecated upstream, don't invest
+- `js ... end` — can't execute real JS without a JS host; we parse but can't semantically emit

spec/tests/hyperscript-upstream-manifest.md

@@ -0,0 +1,163 @@
+# _hyperscript v0.9.90 upstream test coverage manifest
+
+- Upstream tag: `v0.9.90` (commit `a13de2ca`, 2026-04-13)
+- Our snapshot JSON: `spec/tests/hyperscript-upstream-tests.json` (831 tests, scraped 2026-04-09)
+- Total upstream tests: **1496**
+- Runnable (present + not skip-listed): **764** (51.1%)
+- Skip-listed (present but guarded in generator): **44** (2.9%)
+- Missing from our snapshot: **688** (46.0%)
+
+Current conformance: runnable / total = **764/1496 = 51.1%**.
+
+## Per-category
+
+| Category | Upstream | Runnable | Skip-listed | Missing |
+|---|---:|---:|---:|---:|
+| add | 19 | 19 | 0 | 0 |
+| api | 1 | 0 | 0 | 1 |
+| append | 13 | 13 | 0 | 0 |
+| arrayIndex | 14 | 0 | 0 | 14 |
+| arrayLiteral | 8 | 0 | 0 | 8 |
+| asExpression | 42 | 17 | 0 | 25 |
+| askAnswer | 5 | 5 | 0 | 0 |
+| assignableElements | 8 | 8 | 0 | 0 |
+| asyncError | 2 | 2 | 0 | 0 |
+| attributeRef | 22 | 1 | 0 | 21 |
+| beep! | 6 | 0 | 0 | 6 |
+| behavior | 10 | 0 | 0 | 10 |
+| bind | 44 | 38 | 0 | 6 |
+| blockLiteral | 4 | 0 | 0 | 4 |
+| boolean | 2 | 0 | 0 | 2 |
+| bootstrap | 26 | 14 | 0 | 12 |
+| breakpoint | 2 | 0 | 0 | 2 |
+| call | 6 | 6 | 0 | 0 |
+| classRef | 9 | 0 | 0 | 9 |
+| closest | 10 | 3 | 0 | 7 |
+| collectionExpressions | 28 | 22 | 0 | 6 |
+| comparisonOperator | 83 | 40 | 0 | 43 |
+| component | 20 | 18 | 0 | 2 |
+| cookies | 5 | 1 | 0 | 4 |
+| def | 27 | 24 | 3 | 0 |
+| default | 15 | 9 | 0 | 6 |
+| dialog | 12 | 9 | 0 | 3 |
+| dom-scope | 25 | 25 | 0 | 0 |
+| empty | 13 | 13 | 0 | 0 |
+| evalStatically | 8 | 8 | 0 | 0 |
+| eventsource | 13 | 0 | 0 | 13 |
+| fetch | 23 | 15 | 8 | 0 |
+| focus | 3 | 3 | 0 | 0 |
+| functionCalls | 12 | 0 | 0 | 12 |
+| go | 5 | 5 | 0 | 0 |
+| halt | 7 | 7 | 0 | 0 |
+| hide | 16 | 14 | 0 | 2 |
+| hs-include | 10 | 0 | 0 | 10 |
+| htmx | 9 | 0 | 0 | 9 |
+| idRef | 4 | 0 | 0 | 4 |
+| if | 19 | 19 | 0 | 0 |
+| in | 10 | 1 | 0 | 9 |
+| increment | 20 | 20 | 0 | 0 |
+| init | 3 | 3 | 0 | 0 |
+| js | 11 | 1 | 0 | 10 |
+| live | 23 | 23 | 0 | 0 |
+| liveTemplate | 16 | 10 | 0 | 6 |
+| log | 4 | 4 | 0 | 0 |
+| logicalOperator | 10 | 3 | 0 | 7 |
+| make | 8 | 0 | 0 | 8 |
+| mathOperator | 15 | 5 | 0 | 10 |
+| measure | 6 | 2 | 0 | 4 |
+| morph | 10 | 10 | 0 | 0 |
+| no | 9 | 5 | 0 | 4 |
+| not | 9 | 0 | 0 | 9 |
+| null | 1 | 0 | 0 | 1 |
+| numbers | 1 | 0 | 0 | 1 |
+| objectLiteral | 12 | 1 | 0 | 11 |
+| on | 70 | 27 | 33 | 10 |
+| parser | 14 | 7 | 0 | 7 |
+| pick | 24 | 7 | 0 | 17 |
+| positionalExpression | 7 | 0 | 0 | 7 |
+| possessiveExpression | 23 | 0 | 0 | 23 |
+| propertyAccess | 12 | 0 | 0 | 12 |
+| pseudoCommand | 11 | 0 | 0 | 11 |
+| put | 38 | 38 | 0 | 0 |
+| queryRef | 13 | 1 | 0 | 12 |
+| reactive-properties | 4 | 4 | 0 | 0 |
+| reactivity | 8 | 0 | 0 | 8 |
+| regressions | 16 | 0 | 0 | 16 |
+| relativePositionalExpression | 23 | 4 | 0 | 19 |
+| remove | 19 | 14 | 0 | 5 |
+| repeat | 30 | 29 | 0 | 1 |
+| reset | 8 | 8 | 0 | 0 |
+| resize | 3 | 3 | 0 | 0 |
+| runtime | 7 | 0 | 0 | 7 |
+| runtimeErrors | 18 | 0 | 0 | 18 |
+| scoping | 20 | 1 | 0 | 19 |
+| scroll | 8 | 8 | 0 | 0 |
+| security | 1 | 0 | 0 | 1 |
+| select | 4 | 4 | 0 | 0 |
+| send | 8 | 8 | 0 | 0 |
+| set | 31 | 25 | 0 | 6 |
+| settle | 3 | 1 | 0 | 2 |
+| show | 18 | 2 | 0 | 16 |
+| socket | 16 | 4 | 0 | 12 |
+| some | 6 | 0 | 0 | 6 |
+| sourceInfo | 4 | 0 | 0 | 4 |
+| splitJoin | 7 | 7 | 0 | 0 |
+| stringPostfix | 3 | 0 | 0 | 3 |
+| strings | 8 | 0 | 0 | 8 |
+| styleRef | 6 | 0 | 0 | 6 |
+| swap | 4 | 4 | 0 | 0 |
+| symbol | 2 | 0 | 0 | 2 |
+| tailwind | 12 | 0 | 0 | 12 |
+| take | 15 | 12 | 0 | 3 |
+| tell | 10 | 10 | 0 | 0 |
+| templates | 48 | 0 | 0 | 48 |
+| throw | 7 | 0 | 0 | 7 |
+| toggle | 25 | 25 | 0 | 0 |
+| tokenizer | 17 | 0 | 0 | 17 |
+| transition | 17 | 17 | 0 | 0 |
+| trigger | 6 | 0 | 0 | 6 |
+| typecheck | 5 | 0 | 0 | 5 |
+| unlessModifier | 1 | 0 | 0 | 1 |
+| viewTransition | 9 | 0 | 0 | 9 |
+| wait | 7 | 7 | 0 | 0 |
+| when | 41 | 41 | 0 | 0 |
+| worker | 1 | 0 | 0 | 1 |
+| **TOTAL** | **1496** | **764** | **44** | **688** |
+
+## What unlocks how many — MISSING tests by block_reason
+
+| Block reason | Missing | Example | Est. effort |
+|---|---:|---|---|
+| `unscraped-category` | 282 | breakpoint / parses as a top-level command | low — extend scraper to cover these upstream files |
+| `unscraped-in-known-category` | 170 | default / can default variables | low — re-scrape; file was walked but these cases missed |
+| `added-post-snapshot` | 122 | hide / can hide via the hidden attribute strategy | low — re-scrape upstream, bump JSON snapshot |
+| `needs-pattern:${}` | 51 | liveTemplate / script type="text/hyperscript-template" works as a l... | low — template string interpolation in HS parser |
+| `needs-script-tag` | 26 | throw / can throw a basic exception | medium — emit <script type="text/hyperscript"> wrapper in generator |
+| `needs-websocket` | 12 | socket / with timeout parses and uses the configured timeout | high — WebSocket mock server |
+| `needs-css-transitions` | 8 | viewTransition / runs the body when view transitions API is unavail... | medium — transitionend event dispatch in fixtures |
+| `needs-pattern:<sel/>` | 8 | comparisonOperator / exists works | low — parser rule for <sel/> positional expr |
+| `needs-pattern:[@attr]` | 5 | attributeRef / attributeRef with no value works | low — attribute-ref parser rule |
+| `needs-dialog-api` | 3 | dialog / show opens a dialog (non-modal) | low — stub showModal/close on HTMLDialogElement in fixture DOM |
+| `needs-intersection-observer` | 1 | on / on intersection fires when the element is in the viewport | medium — IntersectionObserver mock |
+
+## Skip-listed tests by block_reason
+
+| Block reason | Skipped | Example | Est. effort |
+|---|---:|---|---|
+| `translation-TBD` | 39 | fetch / can do a simple fetch w/ html | unknown — needs case-by-case generator work |
+| `needs-script-tag` | 5 | def / functions can be namespaced | medium — emit <script type="text/hyperscript"> wrapper in generator |
+
+## How this was built
+
+1. `git clone --depth 1 --branch v0.9.90 https://github.com/bigskysoftware/_hyperscript /tmp/hs-upstream`; `git fetch --unshallow` for dated history.
+2. Walked `test/` (excluding `vendor/`, `manual/`, `fixtures.js`, `global-*.js`, `entry.js`, `htmx-fixtures.js`, `playwright.config.js`).
+3. For each `.js` file, a small Python parser finds every `test.describe(...)` block, then every `test(...)` within it — balanced-paren scan that ignores strings, regex literals, line/block comments.
+4. Category = filename stem (e.g. `add.js` → `add`). Test name = the first string literal argument of `test(...)`.
+5. Matched each upstream test against `spec/tests/hyperscript-upstream-tests.json` using `(category, name-normalized)` keys (whitespace-collapsed lowercase). Copied `complexity` when found; inferred it otherwise from body content (sinon./script-tag/dialog/Promise/evaluate).
+6. `status = runnable` if present and name not in generator's `SKIP_TEST_NAMES`; `skip-listed` if present and in that set; `missing` otherwise.
+7. `block_reason` classified from body content — sinon./script tag/dialog/worker/eventsource/WebSocket/MutationObserver/transition/focus/ResizeObserver patterns or `<sel/>`/`${}`/`[@attr]` HS syntax. Missing tests in files touched between 2026-04-09 and 2026-04-14 (`git log --after --before -- test/`) are tagged `added-post-snapshot`.
+8. Regenerate: `python3 tests/playwright/build-hs-manifest.py` (expects `/tmp/hs-upstream` clone at `v0.9.90`).
+
+## Untranslated caveat
+
+The markdown reports `runnable = present + not skip-listed`. Empirical baseline is 645 pass / 109 fail / 77 skip on 831 present tests. The ~109 failures are in-scope but reveal implementation gaps; they are not statically identifiable from upstream source without running the generator. This manifest therefore does not surface an `untranslated` bucket — treat the 109 empirical fails as the lower bound of that bucket inside the `runnable` count.