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Hello! let's do something fun! I want you to run and read dizzy onboard to get an idea of what dizzy is, and how it works. In this directory, I want you to build a standalone vanilla HTML/JS file that shows a
mock robot arm that can pick up a sample from one of a few locations, and move it to various 'processors' to change it. While this happens, on the side we want to see commands and critical events flow to a
queue, and we want to see those commands and events "flow" to their various processes (procedures and projections and policies) in a stylized network graph. The intent is NOT to build a full, actual dizzy
library - rather, to create an interactive visualization of what a dizzy library looks and behaves like. You can have all other freedoms to change and shape this as you wish - including using other tools to
build HTML/JS if you would like (delivering as a static web page is our only hard requirement)

Do not explore or investigate other directories - this is a blank slate and requires no extra information :)

Hello! let's do something fun! I want you to run and read `dizzy onboard` to get an idea of what dizzy is, and how it works. In this directory, I want you to build a standalone vanilla HTML/JS file that shows a
  mock robot arm that can pick up a sample from one of a few locations, and move it to various 'processors' to change it. While this happens, on the side we want to see commands and critical events flow to a
  queue, and we want to see those commands and events "flow" to their various processes (procedures and projections and policies) in a stylized network graph. The intent is NOT to build a full, actual dizzy
  library - rather, to create an interactive visualization of what a dizzy library looks and behaves like. You can have all other freedoms to change and shape this as you wish - including using other tools to
  build HTML/JS if you would like (delivering as a static web page is our only hard requirement)

Do not explore or investigate other directories - this is a blank slate and requires no extra information :)

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Fun project! Let me start by learning what dizzy is.

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dizzy onboard

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# DIZZY Onboarding — Agent Overview

> Printed by `dizzy onboard`. This is the opinionated workflow layer for coding agents
> (Claude Code, OpenCode, pi, ...). Reference pages live under `dizzy docs`:...

# DIZZY Onboarding — Agent Overview

> Printed by `dizzy onboard`. This is the opinionated workflow layer for coding agents
> (Claude Code, OpenCode, pi, ...). Reference pages live under `dizzy docs`:
> `dizzy docs cli` (manpage + roadmap) and `dizzy docs authoring` (the `.feat.yaml`
> authoring guide). Read this first; reach for those when you need detail.

## What DIZZY is

DIZZY is a philosophy/toolchain for event-driven systems. The design lives in one
artifact — the **feature-file** (`.feat.yaml`) — never in an LLM context window.
Every `dizzy` command reads the feature-file; several write to it. If you are an agent
working on a DIZZY project, the feature-file is your map and your contract: change it
deliberately, and regenerate rather than hand-edit generated code.

Two loops drive everything:

```
Commands → Procedures → Events → Policies → Commands   (reactivity loop)
Events → Projections → Models → Queriers → Procedures  (data loop)
```

## The eight components

| Component | Symbol | Role | Naming |
|---|---|---|---|
| Command | `c` | Write intent — a request to do something | imperative snake_case (`ingest_receipt_image`) |
| Procedure | `d` | Handles exactly one command; may call queries; emits events | snake_case verb phrase |
| Event | `e` | Immutable fact — a record of what happened; the source of truth | past-tense snake_case (`receipt_ingested`) |
| Policy | `y` | Reacts to one event; may dispatch new commands | snake_case |
| Projection | `j` | Folds events into a model (read-optimized state) | snake_case |
| Model | `m` | Named read-side schema, served through adapters | plural snake_case (`receipts`) |
| Query | `q` | Typed question — Input/Output contract | snake_case |
| Querier | `Q` | Answers a query from a model via an adapter | snake_case |

Today's feature-file expresses the query/querier pair as a single `queries:` entry —
typed Input/Output plus the callable that answers it.

## The feature-file's role

`.feat.yaml` declares every component, its wiring (which command a procedure handles,
which events it may emit, which model a querier reads), and prose/mermaid descriptions.
It is the API of the entire ecosystem and a versioned, compatibility-guaranteed spec.
A procedure's generated interface declares exactly the command it receives, the queries
it may call, the events it may emit; exceeding declared scope is a type error.

Rules of engagement for agents:

1. Never encode design decisions only in conversation — put them in the feature-file.
2. Never hand-edit generated interfaces (`gen_def`/`gen_int`); regenerate instead.
3. Files you author (`def/` schemas, `libconfig.yaml`, implementation stubs in `lib/`)
   are never clobbered by the generator — they are yours.

## Change taxonomy

Classify every change to the feature-file or its schemas before making it:

- **Additive** — new component, new optional field. Safe; regenerate and move on.
- **Contract-changing** — a slot's type, name, or requiredness changes. Consumers must
  be revisited; the typechecker is your first oracle.
- **Breaking** — stored events no longer parse under the new schema. Needs an upcaster
  or a compat-mode migration (optional-then-drop).
- **Lossy-to-truth** — deletes or stops recording information from the event stream.
  **One-way door.** A field nothing reads today still cannot be naively dropped:
  future projections can never recover it.

The recoverability test: Models are *rebuildable* — replay the event stream through a
projection and you get them back, so model/projection/querier changes are cheap.
Events are *irreducible* — what was never recorded is gone forever. Spend your caution
budget on the event side.

## Exemplar events — good and bad

Good:

- `receipt_ingested { receipt_id, image_path, ingested_at }` — past-tense fact,
  observed data only, carries identity and provenance.
- `recipe_extraction_failed { recipe_id, reason }` — failures are facts too; recording
  them keeps the stream honest.

Bad (and why):

- `ingest_receipt` as an event — imperative; that is a command. Events state what
  *happened*, commands request what *should happen*.
- `average_order_value_updated { avg }` — a derivation recorded as if observed. Derived
  values must be outputs of a procedure with provenance, or live in a model rebuilt by
  a projection — never masquerade as facts.
- `user_registered { email, password_hash }` — PII-class slots in an immutable stream
  you can never delete from. Route sensitive data through commands and models.
- `order_placed` and `order_submitted` sharing most slots — the same fact at two
  grains. Pick one grain per fact.

## Command per lifecycle step

| Step | You want to... | Reach for | Status |
|---|---|---|---|
| Onboard | Orient yourself / a fresh agent session | `dizzy onboard`, `dizzy docs` | shipped |
| Design | Author the feature-file | `dizzy docs authoring`, then `lint`, `simulate` | docs shipped; rest planned |
| Build | Scaffold schemas, generate types + packages | `dizzy generate definitions` → `static` → `libraries` | shipped (python-uv) |
| Change | Assess a feature-file edit | `diff`, `impact`, `compat` | planned |
| Migrate | Replace a model after a schema change | `rebuild <model>` | planned |
| Run | Observe / compare runtime vs. design | `trace`, `drift` | planned |
| Adopt | Wrap a legacy API as commands/events | `wrap` | planned |
| Deploy | Emit a deployment profile | `deploy` | planned |

The shipped path today (run in order, authoring between each step):

```
dizzy generate definitions <feat_file> <output_dir>   # scaffold def/ + libconfig.yaml — then YOU author field detail
dizzy generate static      <feat_file> <output_dir>   # compile def/ → gen_def + gen_int type packages
dizzy generate libraries   <feat_file> <output_dir>   # per-runtime element packages — then YOU implement the stubs
```

For the full per-command reference and roadmap: `dizzy docs cli`.
For the authoring contract (what you write after each stage): `dizzy docs authoring`.

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Base directory for this skill: /tmp/claude-1000/bundled-skills/2.1.205/b0138c40fb059adf2818aacc15cb173e/dataviz

Data Visualization

A chart is read by people and executed by you. This skill turns "make it look
good" into a procedure with checks, so the result is right by construction rather
than by taste.

The method here is design-system-agnostic. Nothing in the procedure, the form
heuristic, the six checks, or the mark specs is specific to one product. A design

...

Base directory for this skill: /tmp/claude-1000/bundled-skills/2.1.205/b0138c40fb059adf2818aacc15cb173e/dataviz

Data Visualization

A chart is read by people and executed by you. This skill turns "make it look
good" into a procedure with checks, so the result is right by construction rather
than by taste.

The method here is design-system-agnostic. Nothing in the procedure, the form
heuristic, the six checks, or the mark specs is specific to one product. A design
system supplies a small set of parameters (its ramps, a categorical order, a
diverging pair, a status palette, a texture, its surfaces, its filter components);
the method consumes them unchanged. A validated default palette is the
reference instance, fully specified in references/palette.md. To target your
brand, read that file's structure and substitute its values — touch nothing else.

The single most important habit: the color part is computable, so compute it.
Never eyeball whether a palette is colorblind-safe — run scripts/validate_palette.js.

The procedure — do these in order

Color comes LAST. Most bad charts pick colors first.

Pick the form. What is the data's job — magnitude, identity, polarity, a
single headline, change-over-time? The job picks the chart type, and sometimes
the answer is not a chart (a stat tile or hero number). → references/choosing-a-form.md
Assign color by the job it does. Categorical (identity), sequential
(magnitude), diverging (polarity), or status (state) — each has one rule.
Assign categorical hues in fixed order, never cycled. → references/color-formula.md
VALIDATE the palette — run the script, don't reason about ΔE.
node scripts/validate_palette.js "<hex,hex,…>" --mode light (relative to
this skill's base directory — or load it as <script type="module"> in the
chart's own page, where it reads
data-palette off <body> and logs a console.table report). It returns
pass/fail on the lightness band, chroma floor, adjacent-pair CVD separation,
and contrast. Fix anything that FAILs before continuing. Re-run for
--mode dark with that mode's surface.
Apply mark specs & spacers. Thin marks, 4px rounded data-ends anchored to
the baseline, 2px lines, ≥8px markers, a 2px surface gap between fills (stacked
segments and adjacent bars alike) and a 2px surface ring on overlapping marks,
selective direct labels. → references/marks-and-anatomy.md
Add the hover layer — by default. An HTML/SVG chart is interactive; ship
a crosshair+tooltip on line/area and a per-mark hover tooltip on bar/dot/cell.
The only form that skips it is a bare stat tile with no plot. Hit targets bigger
than the mark; filters in one row above the charts. → references/interaction.md
Final accessibility pass. For ≥ 2 series a legend is always present and ≤ 4
are also direct-labeled (a single series needs no legend box — the title names
it), so identity is never color-alone; a table view exists; dark mode is selected — its own
steps from the same ramps, validated against the dark surface, not an automatic
flip; texture is available for the CVD/print/forced-colors case.
Render it and look at it. The validator checks color, not layout — open or
screenshot the output and eyeball it for label collisions, geometry, and overflow
before calling it done.

Then check the result against references/anti-patterns.md — it is the catalog
of what goes wrong. If your chart matches an entry, it's wrong.

Non-negotiables (true in every design system)

Assign categorical hues in fixed order, never cycled. A 9th series is never a
generated hue — it folds into "Other," small multiples, or composite encoding.
One axis. Never a dual-axis chart (two y-scales). Two measures of different
scale → two charts, small multiples, or indexed to a common base. (This is the
#1 chart mistake — see anti-patterns.)
Color follows the entity, never its rank. A filter that changes the series
count must not repaint the survivors.
Sequential = one hue, light→dark. Diverging = two hues + a neutral gray
midpoint. Never a rainbow; never a hue at the diverging midpoint.
Run the validator before shipping any categorical palette. CVD ≥ 12 is the
target; 8–12 is a floor that is legal ONLY with secondary encoding. A contrast WARN
obligates visible labels or a table view — it is not dismissable.
Thin marks; a legend always present for ≥ 2 series (none for one), with
selective direct labels (never a number on every point); recessive grid/axes.
Text wears text tokens, never the series color — values, labels, and legends
stay in primary/secondary/muted ink; a colored mark beside them carries identity.
Status colors are reserved (good/warning/serious/critical) and never reused
for "series 4"; they ship with an icon + label, never color alone.

Plugging in a design system

The method is invariant; only these parameters change per system. The reference
instance — every value filled in — is references/palette.md.

Parameter	What the system provides
Ramps	the hue scales (named steps) the palette draws from
Categorical theme	the fixed hue order (a named theme); default + alternates
Sequential hue	the default single hue for magnitude
Diverging pair	two warm/cool poles + a neutral midpoint
Status palette	good / warning / serious / critical — steps distinct from categorical
Texture fill	one directional hand-drawn fill, used at 45° / 135°
Surfaces	light & dark chart-surface colors (the validator needs these)
Filter controls	date-range & dimension controls (behavioral spec in `interaction.md`)

To onboard a new system: fill those rows, feed its ramps to the validator, and let
it snap each slot to the nearest passing step. Structure and rules stay as written.

Reference files

File	What it answers
`references/choosing-a-form.md`	Which chart type / is it even a chart?
`references/color-formula.md`	The four jobs, the six checks, snap-to-passing
`references/marks-and-anatomy.md`	Mark specs, spacers, labels, figures, hero number
`references/interaction.md`	Tooltips & hover, filters & time ranges
`references/components.md`	The pieces a chart is made of — build each in plain HTML
`references/anti-patterns.md`	What goes wrong — check every chart against this
`references/palette.md`	The reference palette instance — every parameter, filled in; swap for your brand's
`scripts/validate_palette.js`	Runnable six-checks validator (run it; don't eyeball)

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# Reference palette

This is the **reference instance** of the data-viz method: every parameter the
method needs, filled in with a validated default palette. The rest of the skill
is system-agnostic — **to target your brand, substitute this file's values** and

# Reference palette

This is the **reference instance** of the data-viz method: every parameter the
method needs, filled in with a validated default palette. The rest of the skill
is system-agnostic — **to target your brand, substitute this file's values** and
re-run the validator. Nothing else changes.

## How to use these values

Everything below is plain hex. In an HTML chart, **define the slots you use as
CSS custom properties in a local `<style>` block** at the top of the file, then
reference them by role throughout — so the light/dark values swap in one place,
and the chart body is written against roles rather than raw hex:

```css
.viz-root {
  --surface-1:      #fcfcfb;   /* chart surface */
  --text-primary:   #0b0b0b;
  --text-secondary: #52514e;
  --series-1:       #2a78d6;   /* categorical slot 1 */
  /* …only the roles this chart uses */
}
@media (prefers-color-scheme: dark) {
  .viz-root {
    --surface-1:      #1a1a19;
    --text-primary:   #ffffff;
    --text-secondary: #c3c2b7;
    --series-1:       #3987e5;
  }
}
```

## Categorical palette

Both modes are selected. The dark column is the same eight hues stepped for the
dark surface, not a separate palette:

| Slot | Hue | Light | Dark |
|------|-----|-------|------|
| 1 | blue | `#2a78d6` | `#3987e5` |
| 2 | aqua | `#1baf7a` | `#199e70` |
| 3 | yellow | `#eda100` | `#c98500` |
| 4 | green | `#008300` | `#008300` |
| 5 | violet | `#4a3aa7` | `#9085e9` |
| 6 | red | `#e34948` | `#e66767` |
| 7 | magenta | `#e87ba4` | `#d55181` |
| 8 | orange | `#eb6834` | `#d95926` |

Light-mode worst adjacent CVD ΔE is 24.2 — well clear of the ≥12 target. Three
light-mode slots (aqua, yellow, magenta) sit below 3:1 contrast on the light
surface: the **relief rule** applies (ship visible direct labels or the table
view). The dark steps were chosen for the dark band (OKLCH L ≈ 0.48–0.67, ≥ 3:1
on the dark surface) and validated as a set — worst adjacent ΔE 10.3, the floor
band, so four-plus series lean on direct labels or texture in dark mode too.

The slot **ordering** is the CVD-safety mechanism, not cosmetic — it was derived
by enumerating orderings and picking the one that maximizes the minimum adjacent
ΔE (see `color-formula.md` § Themes). When you swap in your brand's hues, do the
same: run the validator on candidate orderings and keep the best.

## Sequential hue

Default single hue: **blue**, light→dark. When two sequential contexts appear at
once, the second takes the next categorical slot's hue (aqua), each as its own
one-hue ramp.

| step | hex | step | hex | step | hex | step | hex |
|---|---|---|---|---|---|---|---|
| 100 | `#cde2fb` | 250 | `#86b6ef` | 400 | `#3987e5` | 550 | `#1c5cab` |
| 150 | `#b7d3f6` | 300 | `#6da7ec` | 450 | `#2a78d6` | 600 | `#184f95` |
| 200 | `#9ec5f4` | 350 | `#5598e7` | 500 | `#256abf` | 650 | `#104281` |
| | | | | | | 700 | `#0d366b` |

The full 100→700 range is for **sequential** encoding (continuous magnitude —
heatmaps, choropleths) where the lightest step means "near zero" and is allowed
to recede toward the surface. For an **ordinal** ramp (discrete ordered marks —
funnel stages, tiers — validated with `--ordinal`), the step nearest the surface
must still clear 2:1: on light, start no lighter than **step 250** (`#86b6ef`,
2.06:1); on dark, go no darker than **step 600** (`#184f95`, 2.15:1).

## Diverging pair

**blue ↔ red** — warm/cool poles that read as opposite. Neutral midpoint is gray
(light `#f0efec`, dark `#383835`). Equal step count per arm. (blue↔aqua was
rejected — both cool, the midpoint doesn't read as "nothing".)

## Status palette (fixed — never themed)

| role | hex | light-surface contrast | dark-surface contrast |
|---|---|---|---|
| good | `#0ca30c` | 3.27 | 5.19 |
| warning | `#fab219` | 1.79 | 9.49 |
| serious | `#ec835a` | 2.57 | 6.60 |
| critical | `#d03b3b` | 4.68 | 3.62 |

Dark: same four steps — all clear 3:1 on the dark surface (`#1a1a19`) and remain
distinct from the dark categorical slots. On the light surface, warning and
serious are sub-3:1 by design; the **icon + label** pairing is the mitigation, so
a status color never carries meaning alone. These steps are deliberately distinct
from the categorical slots so a status color never impersonates a series.

## Texture fill (the accessibility channel)

One hand-drawn **"Lines"** fill, used at **45° and its 135° mirror only**. Inked
tone-on-tone (a darker step of the fill's own ramp). On value scales it is
*ordered* (rotation steps with magnitude; arm angle carries the diverging sign).
Triggered by the accessibility setting, print, or `forced-colors` — never
decorative, never on by default.

## Surfaces (for the validator)

- Light chart surface: `#fcfcfb`
- Dark chart surface: `#1a1a19`

These are the validator's built-in defaults. **When you swap in your own
palette, re-run against your own surfaces:**
`--surface <your-light> --mode light` and `--surface <your-dark> --mode dark` —
contrast and band results are only meaningful against the surface the chart
actually renders on.

## Chart chrome & ink

| Role | Light | Dark |
|---|---|---|
| Chart surface | `#fcfcfb` | `#1a1a19` |
| Page plane | `#f9f9f7` | `#0d0d0d` |
| Primary ink | `#0b0b0b` | `#ffffff` |
| Secondary ink | `#52514e` | `#c3c2b7` |
| Muted (axis/labels) | `#898781` | `#898781` |
| Gridline (hairline) | `#e1e0d9` | `#2c2c2a` |
| Baseline / axis | `#c3c2b7` | `#383835` |
| Delta ↑ good (success text) | `#006300` | `#0ca30c` |
| Border (hairline ring) | `rgba(11,11,11,0.10)` | `rgba(255,255,255,0.10)` |

## Filter controls

Filters are standard UI, not chart components — the chart layer only adds the
composition rules in `interaction.md`. A date-range control is a list of preset
rows (today, last 7/30/90 days, month-to-date) with selection marked by a 16px
bold check, hover as a ghost wash, and custom range behind a hairline in the
footer. Dimension filters are a standard combobox.

## Typeface & figures

Everything — including the hero figure — stays in the system sans: `system-ui,
-apple-system, "Segoe UI", sans-serif`. No display or serif face anywhere. Large
standalone numbers (hero figure, stat-tile values) use the default proportional
figures; reserve `font-variant-numeric: tabular-nums` for columns that must align
vertically (table rows, axis ticks). Substitute your brand's UI sans here.

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node /tmp/claude-1000/bundled-skills/2.1.205/b0138c40fb059adf2818aacc15cb173e/dataviz/scripts/validate_palette.js "#3987e5,#199e70,#c98500,#9085e9,#d55181,#d95926" --mode dark

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Palette (dark, surface #1a1a19, categorical): 6 slots
  [PASS] Lightness band         all 6 inside L 0.48–0.67
  [PASS] Chroma floor           all 6 >= 0.1
  [PASS] CVD separation         worst adjace...

Palette (dark, surface #1a1a19, categorical): 6 slots
  [PASS] Lightness band         all 6 inside L 0.48–0.67
  [PASS] Chroma floor           all 6 >= 0.1
  [PASS] CVD separation         worst adjacent #c98500↔#199e70 ΔE 41.3 (protan) · tritan 13.4 · normal 52.3
  [PASS] Contrast vs surface    all 6 >= 3:1

  → ALL CHECKS PASS  (CVD in the 8–12 floor band is legal ONLY with secondary encoding: direct labels, gaps, or texture)
  scope: categorical palettes only. For a lone status/text color check WCAG text contrast; for a sequential ramp, lightness monotonicity.

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which chromium chromium-browser google-chrome google-chrome-stable firefox 2>/dev/null; echo done

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/snap/bin/chromium
/usr/bin/chromium-browser
/usr/bin/firefox
done

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<title>DIZZY LAB — anatomy of an event-driven robot arm</title>
<style>
  :root{
    --bg:#0d0d0d; --surface:#1a1a19; --surface2:#222220; --surface3:#26262a;
    --ink:#ffffff; --ink2:#c3c2b7; --muted:#898781; --line:#2c2c2a; --hairline:rgba(255,255,255,.10);
    --c-cmd:#3987e5; --c-proc:#199e70; --c-event:#c98500; --c-policy:#9085e9;
    --c-proj:#d55181; --c-model:#d95926; --fail:#d03b3b; --good:#0ca30c;
    --mono:ui-monospace,"SF Mono","Cascadia Code",Menlo,Consolas,monospace;
  }
  *{box-sizing:border-box; margin:0}
  body{
    background:var(--bg); color:var(--ink2);
    font:14px/1.45 system-ui,-apple-system,"Segoe UI",sans-serif;
    min-height:100vh; padding:18px 22px 28px;
  }
  header{display:flex; align-items:baseline; gap:14px; flex-wrap:wrap; margin-bottom:6px}
  header h1{color:var(--ink); font-size:19px; letter-spacing:.04em; font-weight:650}
  header h1 .dz{color:var(--c-event); font-family:var(--mono)}
  header .sub{color:var(--muted); font-size:12.5px}
  .loops{font-family:var(--mono); font-size:11px; color:var(--muted); margin-bottom:14px}
  .loops b{font-weight:600}
  .loops .lc{color:var(--c-cmd)} .loops .ld{color:var(--c-proc)} .loops .le{color:var(--c-event)}
  .loops .ly{color:var(--c-policy)} .loops .lj{color:var(--c-proj)} .loops .lm{color:var(--c-model)}

  main{display:grid; grid-template-columns:minmax(540px,1.12fr) 216px minmax(500px,1fr); gap:14px; align-items:start; min-width:1280px}

  .panel{background:var(--surface); border:1px solid var(--hairline); border-radius:10px; overflow:hidden}
  .panel h2{
    font-size:10.5px; letter-spacing:.14em; color:var(--muted); font-weight:600;
    padding:9px 12px 8px; border-bottom:1px solid var(--line); display:flex; align-items:center; gap:8px;
  }
  .panel h2 .badge{
    margin-left:auto; font-family:var(--mono); font-size:10px; color:var(--ink2);
    background:var(--surface2); border:1px solid var(--line); border-radius:99px; padding:1px 8px;
  }

  /* ---------- scene ---------- */
  #scene{display:block; width:100%; height:auto}
  .slabel{font:600 9px var(--mono); fill:var(--muted); letter-spacing:.12em; text-anchor:middle}
  .machine .shell{fill:var(--surface2); stroke:#3a3a36; stroke-width:1.2}
  .machine.fail .shell{stroke:var(--fail); stroke-width:2}
  .lamp{fill:#3a3a36}
  .machine.working .lamp{fill:var(--good); animation:blink 1s infinite}
  @keyframes blink{50%{opacity:.25}}
  #coil path{stroke:#4a4a46; stroke-width:2.5; fill:none; stroke-linecap:round}
  .machine.working #coil path{stroke:#ff8c42; filter:drop-shadow(0 0 4px #e07a3f)}
  #drum-ring{fill:none; stroke:#4a4a46; stroke-width:3}
  #drum-spin{fill:none; stroke:#9085e9; stroke-width:2.5; stroke-dasharray:10 14; opacity:0}
  .machine.working #drum-spin{opacity:.9; animation:spin 0.7s linear infinite}
  @keyframes spin{to{stroke-dashoffset:-48}}
  #laser{stroke:#3fdc97; stroke-width:1.6; opacity:0; filter:drop-shadow(0 0 3px #3fdc97)}
  .machine.working #laser{opacity:1; animation:scanline 1.1s ease-in-out infinite alternate}
  @keyframes scanline{from{transform:translateY(0)} to{transform:translateY(30px)}}
  .vial .glass{fill:rgba(255,255,255,.05); stroke:#8b8b84; stroke-width:1.1}
  .vial .cap{fill:#5a5a54}
  .vial text{font:600 8px var(--mono); fill:var(--ink2); text-anchor:middle}
  .vial.wobble .vbody{animation:wob .12s linear infinite}
  @keyframes wob{25%{transform:translateX(-1.3px)}75%{transform:translateX(1.3px)}}
  .vial .zap{opacity:0}
  .vial.flash .zap{opacity:1; animation:zapfade 1s forwards}
  @keyframes zapfade{to{opacity:0}}
  #armlayer .seg{stroke:#4c4c48; stroke-linecap:round}
  #armlayer .seg.hi{stroke:#6b6b64}
  #armlayer .joint{fill:#26262a; stroke:#77776e; stroke-width:2}
  #gripper path{stroke:#8a8a80; stroke-width:3.4; fill:none; stroke-linecap:round}

  /* ---------- controls ---------- */
  #controls{display:flex; flex-wrap:wrap; align-items:center; gap:8px; padding:10px 12px; border-top:1px solid var(--line)}
  #controls .lbl{font-size:11.5px; color:var(--muted)}
  button{
    background:var(--surface2); border:1px solid #3a3a36; color:var(--ink2); border-radius:7px;
    font:600 12px system-ui,sans-serif; padding:6px 11px; cursor:pointer; transition:border-color .15s, color .15s;
  }
  button:hover:not(:disabled){border-color:var(--c-cmd); color:var(--ink)}
  button:disabled{opacity:.38; cursor:not-allowed}
  button.toggled{border-color:var(--good); color:var(--ink)}
  button.toggled::before{content:"● "; color:var(--good)}
  #speedwrap{display:flex; align-items:center; gap:6px; margin-left:auto; font-size:11.5px; color:var(--muted)}
  #speed{width:90px; accent-color:var(--c-cmd)}
  #speedval{font-family:var(--mono); color:var(--ink2); width:30px}

  /* ---------- models ---------- */
  #models{display:grid; grid-template-columns:1.25fr 1fr; gap:12px; padding:12px}
  #models h3{font-size:10px; letter-spacing:.13em; color:var(--muted); font-weight:600; margin-bottom:7px;
    display:flex; gap:6px; align-items:center}
  #models h3 .dot{width:8px;height:8px;border-radius:2px;background:var(--c-model)}
  table{width:100%; border-collapse:collapse; font:11.5px var(--mono)}
  th{color:var(--muted); font-weight:500; text-align:left; padding:3px 8px 5px; border-bottom:1px solid var(--line); font-size:10px; letter-spacing:.06em}
  td{padding:4px 8px; border-bottom:1px solid var(--line); color:var(--ink2)}
  td.sid{color:var(--ink); font-weight:600}
  tr.updated td{animation:rowflash 1.2s}
  @keyframes rowflash{from{background:rgba(217,89,38,.22)}}
  .empty-model{color:var(--muted); font-size:11px; font-style:italic; padding:6px 8px}
  #tiles{display:grid; grid-template-columns:1fr 1fr; gap:8px}
  .tile{background:var(--surface2); border:1px solid var(--line); border-radius:8px; padding:8px 10px 7px}
  .tile .v{font-size:22px; font-weight:650; color:var(--ink); line-height:1.1}
  .tile .v.bump{animation:pop .4s}
  @keyframes pop{30%{transform:scale(1.18)}}
  .tile .k{font-size:10px; letter-spacing:.1em; color:var(--muted)}
  .tile.failt .v{color:var(--fail)}

  /* ---------- queue ---------- */
  #queuecol{display:flex; flex-direction:column; max-height:820px}
  #chips{overflow:hidden; padding:8px; display:flex; flex-direction:column; gap:6px; flex:1}
  .chip{
    background:var(--surface2); border:1px solid var(--line); border-left:3px solid var(--c-cmd);
    border-radius:6px; padding:5px 8px; font:10.5px var(--mono); animation:chipin .3s;
    flex-shrink:0;
  }
  @keyframes chipin{from{opacity:0; transform:translateY(-10px)}}
  .chip.ev{border-left-color:var(--c-event)}
  .chip.evfail{border-left-color:var(--fail)}
  .chip .cn{color:var(--ink); font-weight:600}
  .chip .cp{color:var(--muted); display:block; margin-top:1px}
  .chip .st{float:right; color:var(--muted)}
  .chip.ev .st{color:var(--c-event)}
  .chip.evfail .st{color:var(--fail)}
  .chip.done .st{color:var(--good)}
  .chip.stale{opacity:.45}

  /* ---------- graph ---------- */
  #graph{display:block; width:100%; height:auto}
  .gcolhead{font:600 9.5px var(--mono); fill:var(--muted); letter-spacing:.16em; text-anchor:middle}
  .gedge{fill:none; stroke:#31312d; stroke-width:1.3}
  .gedge.feedback{stroke-dasharray:4 4; stroke:#3a3550}
  .gnode rect{fill:var(--surface2); stroke-width:1.4; rx:7; transition:filter .2s}
  .gnode text.nlabel{font:10.5px var(--mono); fill:var(--ink2)}
  .gnode text.nsym{font:700 9px var(--mono); fill:#111; text-anchor:middle}
  .gnode.active rect{filter:drop-shadow(0 0 7px currentColor); stroke-width:2.4}
  .gnode.active text.nlabel{fill:var(--ink)}
  .gnode{cursor:default}
  #gInfo{padding:9px 12px; border-top:1px solid var(--line); font-size:11.5px; color:var(--muted); min-height:38px}
  #gInfo b{color:var(--ink2); font-family:var(--mono); font-weight:600}
  #legend{display:flex; flex-wrap:wrap; gap:5px 14px; padding:8px 12px 10px; border-top:1px solid var(--line)}
  #legend span{font:10px var(--mono); color:var(--muted); display:flex; align-items:center; gap:5px}
  #legend i{width:13px; height:13px; border-radius:4px; font:700 8.5px var(--mono); color:#111;
    display:inline-flex; align-items:center; justify-content:center; font-style:normal}

  footer{margin-top:12px; font-size:11.5px; color:var(--muted); max-width:960px}
</style>
</head>
<body>

<header>
  <h1><span class="dz">DIZZY</span> LAB</h1>
  <span class="sub">anatomy of an event-driven robot arm — a stylized visualization, not a real dizzy runtime</span>
</header>
<div class="loops">
  <b>reactivity loop</b>&nbsp; <span class="lc">commands</span> → <span class="ld">procedures</span> → <span class="le">events</span> → <span class="ly">policies</span> → <span class="lc">commands</span>
  &nbsp;&nbsp;·&nbsp;&nbsp;
  <b>data loop</b>&nbsp; <span class="le">events</span> → <span class="lj">projections</span> → <span class="lm">models</span>
</div>

<main>
  <!-- ============ LEFT: physical world ============ -->
  <div style="display:flex; flex-direction:column; gap:14px">
    <div class="panel">
      <h2>PHYSICAL WORLD <span class="badge" id="armstate">arm: idle</span></h2>
      <svg id="scene" viewBox="0 0 640 470" role="img" aria-label="Robot arm lab scene">
        <defs>
          <pattern id="wall" width="34" height="34" patternUnits="userSpaceOnUse">
            <path d="M34 0H0V34" fill="none" stroke="#222220" stroke-width="1"/>
          </pattern>
          <linearGradient id="floorg" x1="0" y1="0" x2="0" y2="1">
            <stop offset="0" stop-color="#232321"/><stop offset="1" stop-color="#1c1c1a"/>
          </linearGradient>
        </defs>
        <rect x="0" y="0" width="640" height="440" fill="url(#wall)"/>
        <rect x="0" y="440" width="640" height="30" fill="url(#floorg)"/>
        <line x1="0" y1="440" x2="640" y2="440" stroke="#383835" stroke-width="1.5"/>

        <!-- rack -->
        <g id="rack">
          <rect x="104" y="436" width="150" height="7" rx="2" fill="#33332f"/>
          <rect x="110" y="443" width="8" height="14" fill="#2a2a27"/>
          <rect x="240" y="443" width="8" height="14" fill="#2a2a27"/>
          <text class="slabel" x="179" y="461">SAMPLE RACK</text>
        </g>

        <!-- tray -->
        <g id="tray">
          <rect x="406" y="436" width="168" height="7" rx="2" fill="#33332f"/>
          <rect x="412" y="443" width="8" height="14" fill="#2a2a27"/>
          <rect x="560" y="443" width="8" height="14" fill="#2a2a27"/>
          <text class="slabel" x="490" y="461">OUTPUT TRAY</text>
        </g>

        <!-- heater -->
        <g id="m-heater" class="machine">
          <rect class="shell" x="106" y="248" width="68" height="34" rx="6"/>
          <g id="coil">
            <path d="M114 265 q6 -9 12 0 q6 9 12 0 q6 -9 12 0 q6 9 12 0 q6 -9 12 0"/>
          </g>
          <circle class="lamp" cx="167" cy="255" r="3"/>
          <text class="slabel" x="140" y="298">HEATER</text>
        </g>

        <!-- centrifuge -->
        <g id="m-centrifuge" class="machine">
          <circle id="drum-ring" cx="320" cy="173" r="27"/>
          <circle id="drum-spin" cx="320" cy="173" r="27"/>
          <rect class="shell" x="296" y="203" width="48" height="12" rx="4"/>
          <circle class="lamp" cx="336" cy="209" r="3"/>
          <text class="slabel" x="320" y="231">CENTRIFUGE</text>
        </g>

        <!-- scanner -->
        <g id="m-scanner" class="machine">
          <rect class="shell" x="474" y="196" width="7" height="62" rx="2"/>
          <rect class="shell" x="519" y="196" width="7" height="62" rx="2"/>
          <rect class="shell" x="470" y="188" width="60" height="10" rx="4"/>
          <line id="laser" x1="483" y1="222" x2="517" y2="222"/>
          <circle class="lamp" cx="524" cy="193" r="3"/>
          <text class="slabel" x="500" y="274">SCANNER</text>
        </g>

        <!-- vials get inserted here (under the arm) -->
        <g id="viallayer"></g>

        <!-- arm -->
        <g id="armlayer">
          <rect x="303" y="394" width="34" height="46" rx="4" fill="#33332f" stroke="#44443f" stroke-width="1"/>
          <rect x="288" y="434" width="64" height="8" rx="3" fill="#3a3a36"/>
          <line id="seg1" class="seg" stroke-width="13"/>
          <line id="seg1h" class="seg hi" stroke-width="4"/>
          <line id="seg2" class="seg" stroke-width="9.5"/>
          <line id="seg2h" class="seg hi" stroke-width="3"/>
          <circle id="jShoulder" class="joint" r="9"/>
          <circle id="jElbow" class="joint" r="7"/>
          <g id="gripper"><path d="M-9,-2 v8 M9,-2 v8 M-9,-2 h18"/></g>
        </g>
      </svg>

      <div id="controls">
        <span class="lbl">send next sample to →</span>
        <button data-proc="heater">🔥 Heater</button>
        <button data-proc="centrifuge">🌀 Centrifuge</button>
        <button data-proc="scanner">📡 Scanner</button>
        <button id="refill">＋ restock rack</button>
        <button id="auto">AUTO</button>
        <div id="speedwrap">speed <input id="speed" type="range" min="0.5" max="3" step="0.25" value="1"><span id="speedval">1×</span></div>
      </div>
    </div>

    <div class="panel">
      <h2>READ MODELS <span class="badge">rebuilt from events only — never from the scene</span></h2>
      <div id="models">
        <div>
          <h3><span class="dot"></span>samples <span style="color:var(--muted);font-weight:400">&nbsp;m · via sample_tracker</span></h3>
          <table id="samplesTbl">
            <thead><tr><th>SAMPLE</th><th>LOCATION</th><th>STATE</th></tr></thead>
            <tbody><tr><td colspan="3" class="empty-model">empty — no events folded yet</td></tr></tbody>
          </table>
        </div>
        <div>
          <h3><span class="dot"></span>throughput <span style="color:var(--muted);font-weight:400">&nbsp;m · via lab_metrics</span></h3>
          <div id="tiles">
            <div class="tile"><div class="v" id="t-picked">0</div><div class="k">PICKED</div></div>
            <div class="tile"><div class="v" id="t-processed">0</div><div class="k">PROCESSED</div></div>
            <div class="tile failt"><div class="v" id="t-failed">0</div><div class="k">FAILED</div></div>
            <div class="tile"><div class="v" id="t-stored">0</div><div class="k">STORED</div></div>
          </div>
        </div>
      </div>
    </div>
  </div>

  <!-- ============ MIDDLE: queue ============ -->
  <div class="panel" id="queuecol">
    <h2>QUEUE <span class="badge" id="qdepth">0 pending</span></h2>
    <div id="chips"></div>
  </div>

  <!-- ============ RIGHT: network ============ -->
  <div class="panel">
    <h2>COMPONENT NETWORK <span class="badge">the .feat.yaml, drawn</span></h2>
    <svg id="graph" viewBox="0 0 690 650" role="img" aria-label="Dizzy component network graph"></svg>
    <div id="gInfo">hover a node — pulses show messages flowing between components</div>
    <div id="legend"></div>
  </div>
</main>

<footer>
  Click a processor button (or let AUTO run) and watch one user intent become a chain: a
  <b style="color:var(--c-cmd)">command</b> is queued, its <b style="color:var(--c-proc)">procedure</b> drives the arm and emits
  <b style="color:var(--c-event)">events</b> — immutable facts. <b style="color:var(--c-policy)">Policies</b> react to facts by dispatching
  new commands (the dashed feedback arcs), while <b style="color:var(--c-proj)">projections</b> fold the same facts into
  <b style="color:var(--c-model)">models</b>. Note the read models lag the scene slightly: they know only what the events have told them.
  Processing fails ~20% of the time — failures are facts too, and the <span style="font-family:var(--mono)">retry_processing</span> policy handles them.
</footer>

<script>
"use strict";
/* ================================================================
   DIZZY LAB — a stylized visualization of an event-driven system.
   Mock components mirror dizzy's eight-part vocabulary:
   commands (c) → procedures (d) → events (e) → policies (y) → commands
   events (e) → projections (j) → models (m)
   ================================================================ */

const $ = s => document.querySelector(s);
const SVGNS = "http://www.w3.org/2000/svg";
const COL = {c:"#3987e5", d:"#199e70", e:"#c98500", y:"#9085e9", j:"#d55181", m:"#d95926"};
const TYPENAME = {c:"command", d:"procedure", e:"event", y:"policy", j:"projection", m:"model"};

let speed = 1;
$("#speed").addEventListener("input", e => {
  speed = +e.target.value;
  $("#speedval").textContent = speed + "×";
});

const sleep = ms => new Promise(r => setTimeout(r, ms));
const ease = k => k < .5 ? 2*k*k : 1 - Math.pow(-2*k + 2, 2) / 2;
function tween(dur, fn){
  return new Promise(res => {
    const t0 = performance.now();
    const step = t => {
      const k = Math.min(1, (t - t0) / dur);
      fn(ease(k));
      if (k < 1) requestAnimationFrame(step); else res();
    };
    requestAnimationFrame(step);
  });
}

/* ================= network graph ================= */

const W = 132, H = 26;
const NODES = [
  // commands
  {id:"c:pick_sample",    x:85,  y:110, desc:"Write intent: lift a specific vial out of the rack, bound for a processor."},
  {id:"c:place_sample",   x:85,  y:195, desc:"Write intent: set the held vial down at its destination processor."},
  {id:"c:process_sample", x:85,  y:280, desc:"Write intent: run the processor on the vial sitting in it."},
  {id:"c:store_sample",   x:85,  y:365, desc:"Write intent: move the finished vial from the processor to the output tray."},
  // procedures
  {id:"d:grip_and_lift",        x:245, y:110, desc:"Handles pick_sample. Drives the arm to the rack, grips, lifts. Emits sample_picked."},
  {id:"d:position_and_release", x:245, y:195, desc:"Handles place_sample. Carries the vial to the processor port. Emits sample_placed."},
  {id:"d:run_processor",        x:245, y:280, desc:"Handles process_sample. Runs the machine. Emits sample_processed — or processing_failed."},
  {id:"d:stow_sample",          x:245, y:365, desc:"Handles store_sample. Retrieves the vial and stows it in the tray. Emits sample_stored."},
  // events
  {id:"e:sample_picked",     x:405, y:90,  desc:"Fact: a vial left the rack and is held by the arm. Past-tense, immutable, the source of truth."},
  {id:"e:sample_placed",     x:405, y:175, desc:"Fact: a vial arrived at a processor port."},
  {id:"e:sample_processed",  x:405, y:260, desc:"Fact: the processor finished and changed the sample. Carries the result with provenance."},
  {id:"e:processing_failed", x:405, y:330, desc:"Fact: a run failed. Failures are facts too — recording them keeps the stream honest."},
  {id:"e:sample_stored",     x:405, y:415, desc:"Fact: a vial reached the output tray. End of this sample's journey."},
  // policies
  {id:"y:route_to_processor", x:582, y:90,  desc:"Reacts to sample_picked → dispatches place_sample toward the job's destination."},
  {id:"y:begin_processing",   x:582, y:175, desc:"Reacts to sample_placed → dispatches process_sample. Nobody calls the processor directly."},
  {id:"y:store_when_done",    x:582, y:260, desc:"Reacts to sample_processed → dispatches store_sample to clear the machine."},
  {id:"y:retry_processing",   x:582, y:330, desc:"Reacts to processing_failed → dispatches process_sample again with attempt+1."},
  // projections + models
  {id:"j:sample_tracker", x:300, y:508, desc:"Folds every sample event into the samples model: where each vial is, and what state it's in."},
  {id:"j:lab_metrics",    x:490, y:508, desc:"Folds outcome events into throughput counters."},
  {id:"m:samples",        x:300, y:588, desc:"Read model. Rebuildable at any time by replaying the event stream through sample_tracker."},
  {id:"m:throughput",     x:490, y:588, desc:"Read model of counters. Cheap to change — models are rebuildable, events are irreducible."},
];
const EDGES = [
  ["c:pick_sample","d:grip_and_lift"], ["c:place_sample","d:position_and_release"],
  ["c:process_sample","d:run_processor"], ["c:store_sample","d:stow_sample"],
  ["d:grip_and_lift","e:sample_picked"], ["d:position_and_release","e:sample_placed"],
  ["d:run_processor","e:sample_processed"], ["d:run_processor","e:processing_failed"],
  ["d:stow_sample","e:sample_stored"],
  ["e:sample_picked","y:route_to_processor"], ["e:sample_placed","y:begin_processing"],
  ["e:sample_processed","y:store_when_done"], ["e:processing_failed","y:retry_processing"],
  ["y:route_to_processor","c:place_sample","fb",30], ["y:begin_processing","c:process_sample","fb",22],
  ["y:store_when_done","c:store_sample","fb",40], ["y:retry_processing","c:process_sample","fb",14],
  ["e:sample_picked","j:sample_tracker","down"], ["e:sample_placed","j:sample_tracker","down"],
  ["e:sample_processed","j:sample_tracker","down"], ["e:processing_failed","j:sample_tracker","down"],
  ["e:sample_stored","j:sample_tracker","down"],
  ["e:sample_picked","j:lab_metrics","down"], ["e:sample_processed","j:lab_metrics","down"],
  ["e:processing_failed","j:lab_metrics","down"], ["e:sample_stored","j:lab_metrics","down"],
  ["j:sample_tracker","m:samples","down"], ["j:lab_metrics","m:throughput","down"],
];

const graph = $("#graph");
const nodeMap = {}, edgeMap = {};

function el(tag, attrs, parent){
  const n = document.createElementNS(SVGNS, tag);
  for (const k in attrs) n.setAttribute(k, attrs[k]);
  if (parent) parent.appendChild(n);
  return n;
}

function buildGraph(){
  // column headers
  const heads = [["COMMANDS",85],["PROCEDURES",245],["EVENTS",405],["POLICIES",582]];
  for (const [t,x] of heads){
    const h = el("text", {class:"gcolhead", x, y:64}, graph); h.textContent = t;
  }
  const ph = el("text", {class:"gcolhead", x:395, y:478}, graph); ph.textContent = "PROJECTIONS → MODELS";
  NODES.forEach(n => nodeMap[n.id] = n);

  const edgeLayer = el("g", {}, graph);
  for (const [a,b,kind,cy] of EDGES){
    const s = nodeMap[a], t = nodeMap[b];
    let dPath;
    if (kind === "fb"){
      dPath = `M ${s.x} ${s.y - H/2} C ${s.x} ${cy}, ${t.x} ${cy}, ${t.x} ${t.y - H/2}`;
    } else if (kind === "down"){
      dPath = `M ${s.x} ${s.y + H/2} C ${s.x} ${s.y + 62}, ${t.x} ${t.y - 58}, ${t.x} ${t.y - H/2}`;
    } else {
      const x1 = s.x + W/2, x2 = t.x - W/2, mid = (x1 + x2) / 2;
      dPath = `M ${x1} ${s.y} C ${mid} ${s.y}, ${mid} ${t.y}, ${x2} ${t.y}`;
    }
    const p = el("path", {class:"gedge" + (kind === "fb" ? " feedback" : ""), d:dPath}, edgeLayer);
    edgeMap[a + ">" + b] = p;
  }

  const pulseLayer = el("g", {id:"pulses"}, graph);

  for (const n of NODES){
    const type = n.id[0];
    const g = el("g", {class:"gnode", id:"n-" + n.id.replace(":","_"), style:`color:${COL[type]}`}, graph);
    el("rect", {x:n.x - W/2, y:n.y - H/2, width:W, height:H, rx:7, stroke:COL[type]}, g);
    el("rect", {x:n.x - W/2 + 6, y:n.y - 7.5, width:15, height:15, rx:4, fill:COL[type]}, g);
    const sym = el("text", {class:"nsym", x:n.x - W/2 + 13.5, y:n.y + 3.4}, g);
    sym.textContent = type;
    const lb = el("text", {class:"nlabel", x:n.x - W/2 + 26, y:n.y + 3.6}, g);
    lb.textContent = n.id.slice(2);
    g.addEventListener("mouseenter", () => {
      $("#gInfo").innerHTML = `<b>${n.id.slice(2)}</b> · ${TYPENAME[type]} — ${n.desc}`;
    });
    g.addEventListener("mouseleave", () => {
      $("#gInfo").textContent = "hover a node — pulses show messages flowing between components";
    });
  }

  // legend
  for (const t of ["c","d","e","y","j","m"]){
    const s = document.createElement("span");
    s.innerHTML = `<i style="background:${COL[t]}">${t}</i>${TYPENAME[t]}`;
    $("#legend").appendChild(s);
  }
  return pulseLayer;
}
const pulseLayer = buildGraph();

function flash(id, ms = 900){
  const g = $("#n-" + id.replace(":","_"));
  if (!g) return;
  g.classList.add("active");
  clearTimeout(g._t);
  g._t = setTimeout(() => g.classList.remove("active"), ms / speed);
}

function pulse(src, dst, color){
  const path = edgeMap[src + ">" + dst];
  if (!path) return Promise.resolve();
  const len = path.getTotalLength();
  const dot = el("circle", {r:4.2, fill:color, style:`filter:drop-shadow(0 0 4px ${color})`}, pulseLayer);
  return tween(430 / speed, k => {
    const pt = path.getPointAtLength(len * k);
    dot.setAttribute("cx", pt.x); dot.setAttribute("cy", pt.y);
  }).then(() => dot.remove());
}

/* ================= queue strip ================= */

const chipsBox = $("#chips");
function chip(kind, name, payloadStr, pending){
  const c = document.createElement("div");
  c.className = "chip" + (kind === "e" ? (name === "processing_failed" ? " ev evfail" : " ev") : "");
  c.innerHTML = `<span class="st">${kind === "e" ? "fact" : (pending ? "queued" : "")}</span>` +
                `<span class="cn">${name}</span><span class="cp">${payloadStr}</span>`;
  chipsBox.prepend(c);
  while (chipsBox.children.length > 26) chipsBox.lastChild.remove();
  [...chipsBox.children].forEach((n,i) => n.classList.toggle("stale", i > 14));
  return c;
}
function chipConsumed(c){
  c.classList.add("done");
  c.querySelector(".st").textContent = "✓ handled";
}
function qdepth(){ $("#qdepth").textContent = QUEUE.length + " pending"; }

/* ================= physical scene ================= */

const scene = $("#scene");
const SH = {x:320, y:392};           // shoulder (screen coords)
const L1 = 150, L2 = 118;

const rackSlots = [{x:130, vial:null}, {x:178, vial:null}, {x:226, vial:null}];
const traySlots = [{x:424, vial:null}, {x:462, vial:null}, {x:500, vial:null}, {x:538, vial:null}];
const RACK_SURF = 436, TRAY_SURF = 436;
// port = anchor point of a vial sitting in the machine (top-center of vial)
const procs = {
  heater:     {port:{x:140, y:222}, vial:null, busy:false, el:"#m-heater",     result:"heated"},
  centrifuge: {port:{x:320, y:158}, vial:null, busy:false, el:"#m-centrifuge", result:"separated"},
  scanner:    {port:{x:500, y:212}, vial:null, busy:false, el:"#m-scanner",    result:"scanned"},
};
const reservations = {heater:false, centrifuge:false, scanner:false};

const STATE_LIQ = {raw:"#7f95ad", heated:"#e0763a", separated:null, scanned:"#7f95ad"};

let sampleSeq = 1;
const samples = new Map();   // id -> {id, state, el, loc}

function makeVial(id){
  const g = el("g", {class:"vial"}, $("#viallayer"));
  const body = el("g", {class:"vbody"}, g);
  el("rect", {class:"liq", x:-6.5, y:12, width:13, height:16, fill:STATE_LIQ.raw}, body);
  el("rect", {class:"liq2", x:-6.5, y:12, width:13, height:8, fill:"#cdd4dc", opacity:0}, body);
  el("rect", {class:"glass", x:-8, y:3, width:16, height:27, rx:3.5}, body);
  el("rect", {class:"cap", x:-6.5, y:0, width:13, height:5, rx:1.5}, body);
  el("rect", {class:"zap", x:-11, y:-1, width:22, height:33, rx:5, fill:"none",
              stroke:"#3fdc97", "stroke-width":2}, body);
  const t = el("text", {x:0, y:24}, body); t.textContent = id;
  return g;
}
function setVialPos(s, x, y){ s.el.setAttribute("transform", `translate(${x},${y})`); s.pos = {x,y}; }
function setVialState(s, state){
  s.state = state;
  const liq = s.el.querySelector(".liq"), liq2 = s.el.querySelector(".liq2");
  if (state === "separated"){
    liq.setAttribute("fill", "#8b5fd0"); liq.setAttribute("y", 19); liq.setAttribute("height", 9);
    liq2.setAttribute("opacity", 1); liq2.setAttribute("y", 12); liq2.setAttribute("height", 7);
  } else {
    liq.setAttribute("fill", STATE_LIQ[state]); liq.setAttribute("y", 12); liq.setAttribute("height", 16);
    liq2.setAttribute("opacity", 0);
  }
  s.el.classList.remove("flash"); void s.el.getBBox; s.el.classList.add("flash");
}
function newSample(slotIdx){
  const id = "S" + sampleSeq++;
  const s = {id, state:"raw", el:makeVial(id), loc:{type:"rack", slot:slotIdx}};
  samples.set(id, s);
  rackSlots[slotIdx].vial = id;
  setVialPos(s, rackSlots[slotIdx].x, RACK_SURF - 30);
  s.el.style.opacity = 0;
  requestAnimationFrame(() => { s.el.style.transition = "opacity .5s"; s.el.style.opacity = 1; });
  return s;
}

/* -------- arm kinematics -------- */
const arm = {busy:false, holding:null};
let tip = {x:320, y:250};

function toPolar(p){
  const vx = p.x - SH.x, vy = SH.y - p.y;
  let th = Math.atan2(vy, vx);
  if (th < -Math.PI/2) th += 2*Math.PI;   // keep sweeps going over the top, not through the floor
  return {th, r:Math.hypot(vx, vy)};
}
const fromPolar = (th, r) => ({x: SH.x + Math.cos(th)*r, y: SH.y - Math.sin(th)*r});

function renderArm(){
  const vx = tip.x - SH.x, vy = SH.y - tip.y;
  let d = Math.hypot(vx, vy);
  const dMax = L1 + L2 - 2, dMin = Math.abs(L1 - L2) + 6;
  const dc = Math.max(dMin, Math.min(dMax, d)) || dMin;
  const phi = Math.atan2(vy, vx);
  const a = Math.acos(Math.max(-1, Math.min(1, (L1*L1 + dc*dc - L2*L2) / (2*L1*dc))));
  const shAng = phi + a;                  // elbow-up
  const ex = SH.x + Math.cos(shAng)*L1, ey = SH.y - Math.sin(shAng)*L1;
  const scale = d ? dc / d : 1;
  const tx = SH.x + vx*scale, ty = SH.y - vy*scale;

  for (const [id, x1, y1, x2, y2] of [["#seg1", SH.x, SH.y, ex, ey], ["#seg2", ex, ey, tx, ty]]){
    for (const suf of ["", "h"]){
      const ln = $(id + suf);
      ln.setAttribute("x1", x1); ln.setAttribute("y1", y1);
      ln.setAttribute("x2", x2); ln.setAttribute("y2", y2);
    }
  }
  $("#jShoulder").setAttribute("cx", SH.x); $("#jShoulder").setAttribute("cy", SH.y);
  $("#jElbow").setAttribute("cx", ex); $("#jElbow").setAttribute("cy", ey);
  $("#gripper").setAttribute("transform", `translate(${tx},${ty})`);
  if (arm.holding) setVialPos(samples.get(arm.holding), tx, ty + 7);
}
renderArm();

async function sweepTo(target){
  const a = toPolar(tip), b = toPolar(target);
  const dth = b.th - a.th;
  const dur = (380 + Math.abs(dth)*400 + Math.abs(b.r - a.r)*0.9) / speed;
  await tween(dur, k => {
    const th = a.th + dth*k;
    let r = a.r + (b.r - a.r)*k - Math.sin(Math.PI*k) * Math.min(52, Math.abs(dth)*46);
    tip = fromPolar(th, Math.max(58, r));
    renderArm();
  });
}
async function lineTo(target, ms = 300){
  const p0 = {...tip};
  await tween(ms / speed, k => {
    tip = {x: p0.x + (target.x - p0.x)*k, y: p0.y + (target.y - p0.y)*k};
    renderArm();
  });
}
const grabPt  = anchor => ({x: anchor.x, y: anchor.y - 7});
const hoverPt = anchor => ({x: anchor.x, y: anchor.y - 46});
const HOME = {x:320, y:252};

function armStatus(txt){ $("#armstate").textContent = "arm: " + txt; }
async function parkIfIdle(){
  await sleep(600 / speed);
  if (!arm.busy && !arm.holding && !QUEUE.some(c => c.name !== "process_sample")){
    arm.busy = true; armStatus("parking");
    await sweepTo(HOME);
    arm.busy = false; armStatus("idle"); pump();
  }
}

/* ================= command queue & engine ================= */

const QUEUE = [];
let cmdSeq = 1;

const PROC_OF = {
  pick_sample:"grip_and_lift", place_sample:"position_and_release",
  process_sample:"run_processor", store_sample:"stow_sample",
};

function fmtPayload(name, p){
  switch (name){
    case "pick_sample":       return `{${p.sample} → ${p.target}}`;
    case "place_sample":      return `{${p.sample} @ ${p.target}}`;
    case "process_sample":    return `{${p.sample} @ ${p.processor}, attempt ${p.attempt}}`;
    case "store_sample":      return `{${p.sample} ← ${p.processor}}`;
    case "sample_picked":     return `{${p.sample}, from rack}`;
    case "sample_placed":     return `{${p.sample}, at ${p.at}}`;
    case "sample_processed":  return `{${p.sample}, result: ${p.result}}`;
    case "processing_failed": return `{${p.sample}, ${p.reason}, attempt ${p.attempt}}`;
    case "sample_stored":     return `{${p.sample}, tray slot ${p.slot}}`;
  }
  return "";
}

async function dispatch(name, payload, fromPolicy){
  if (fromPolicy) await pulse(fromPolicy, "c:" + name, COL.c);
  flash("c:" + name);
  const cmd = {id:cmdSeq++, name, payload, chip:chip("c", name, fmtPayload(name, payload), true)};
  QUEUE.push(cmd); qdepth();
  pump();
}

const freeTraySlot = () => traySlots.findIndex(t => !t.vial);

function canRun(c){
  const p = c.payload;
  switch (c.name){
    case "pick_sample":    return !arm.busy && !arm.holding;
    case "place_sample":   return !arm.busy && arm.holding === p.sample && !procs[p.target].vial;
    case "process_sample": return procs[p.processor].vial === p.sample && !procs[p.processor].busy;
    case "store_sample":   return !arm.busy && !arm.holding && freeTraySlot() !== -1;
  }
}

function pump(){
  for (let i = 0; i < QUEUE.length; i++){
    if (canRun(QUEUE[i])){
      const cmd = QUEUE.splice(i, 1)[0];
      qdepth();
      exec(cmd);
      i = -1;  // rescan: exec set busy flags synchronously
    }
  }
}
setInterval(pump, 400);

async function exec(cmd){
  // claim resources synchronously so pump can't double-book
  if (cmd.name !== "process_sample") arm.busy = true;
  else procs[cmd.payload.processor].busy = true;

  chipConsumed(cmd.chip);
  const dId = "d:" + PROC_OF[cmd.name];
  pulse("c:" + cmd.name, dId, COL.c);
  const g = $("#n-" + dId.replace(":","_"));
  g.classList.add("active");
  try { await ACTIONS[cmd.name](cmd.payload); }
  finally {
    g.classList.remove("active");
    pump();
  }
}

function emitEvent(name, payload, fromProc){
  chip("e", name, fmtPayload(name, payload));
  pulse(fromProc, "e:" + name, COL.e).then(() => {
    flash("e:" + name);
    for (const pol of POLICIES[name] || []) (async () => {
      await pulse("e:" + name, pol.id, COL.e);
      flash(pol.id);
      await sleep(140 / speed);
      pol.run(payload);
    })();
    for (const pr of PROJECTIONS[name] || []) (async () => {
      await pulse("e:" + name, pr.id, COL.e);
      flash(pr.id);
      pr.fold(name, payload);
      await pulse(pr.id, pr.model, COL.m);
      flash(pr.model);
      pr.render(payload);
    })();
  });
}

/* -------- procedures (the physical effects) -------- */

const ACTIONS = {
  async pick_sample(p){
    armStatus("picking " + p.sample);
    const s = samples.get(p.sample);
    const slot = rackSlots[s.loc.slot];
    const anchor = {x:slot.x, y:RACK_SURF - 30};
    await sweepTo(hoverPt(anchor));
    await lineTo(grabPt(anchor));
    slot.vial = null; arm.holding = p.sample; s.loc = {type:"arm"};
    await lineTo(hoverPt(anchor));
    arm.busy = false; armStatus("holding " + p.sample);
    updateButtons();
    emitEvent("sample_picked", {sample:p.sample, dest:p.target}, "d:grip_and_lift");
  },

  async place_sample(p){
    armStatus("placing " + p.sample);
    const proc = procs[p.target];
    const s = samples.get(p.sample);
    await sweepTo(hoverPt(proc.port));
    await lineTo(grabPt(proc.port));
    arm.holding = null; proc.vial = p.sample; s.loc = {type:"proc", proc:p.target};
    setVialPos(s, proc.port.x, proc.port.y);
    await lineTo(hoverPt(proc.port));
    arm.busy = false; armStatus("idle");
    emitEvent("sample_placed", {sample:p.sample, at:p.target}, "d:position_and_release");
    parkIfIdle();
  },

  async process_sample(p){
    const proc = procs[p.processor];
    const machine = $(proc.el);
    const s = samples.get(p.sample);
    machine.classList.add("working");
    if (p.processor === "centrifuge") s.el.classList.add("wobble");
    await sleep(2600 / speed);
    machine.classList.remove("working");
    s.el.classList.remove("wobble");
    proc.busy = false;
    const failed = p.attempt === 1 && Math.random() < 0.22;
    if (failed){
      machine.classList.add("fail");
      setTimeout(() => machine.classList.remove("fail"), 900 / speed);
      emitEvent("processing_failed",
        {sample:p.sample, processor:p.processor, attempt:p.attempt, reason:"sensor_jitter"},
        "d:run_processor");
    } else {
      setVialState(s, proc.result);
      emitEvent("sample_processed",
        {sample:p.sample, processor:p.processor, result:proc.result}, "d:run_processor");
    }
  },

  async store_sample(p){
    armStatus("stowing " + p.sample);
    const proc = procs[p.processor];
    const s = samples.get(p.sample);
    await sweepTo(hoverPt(proc.port));
    await lineTo(grabPt(proc.port));
    proc.vial = null; arm.holding = p.sample; s.loc = {type:"arm"};
    reservations[p.processor] = false; updateButtons();
    await lineTo(hoverPt(proc.port));
    const slotIdx = freeTraySlot();
    const slot = traySlots[slotIdx]; slot.vial = p.sample;
    const anchor = {x:slot.x, y:TRAY_SURF - 30};
    await sweepTo(hoverPt(anchor));
    await lineTo(grabPt(anchor));
    arm.holding = null; s.loc = {type:"tray", slot:slotIdx};
    setVialPos(s, anchor.x, anchor.y);
    await lineTo(hoverPt(anchor));
    arm.busy = false; armStatus("idle");
    emitEvent("sample_stored", {sample:p.sample, slot:slotIdx}, "d:stow_sample");
    if (freeTraySlot() === -1) shipTray();
    parkIfIdle();
  },
};

function shipTray(){
  setTimeout(() => {
    for (const t of traySlots){
      if (!t.vial) continue;
      const s = samples.get(t.vial);
      t.vial = null;
      s.el.style.transition = "opacity .8s";
      s.el.style.opacity = 0;
      setTimeout(() => s.el.remove(), 900);
    }
  }, 1600 / speed);
}

/* -------- policies: events → new commands -------- */

const POLICIES = {
  sample_picked: [{
    id:"y:route_to_processor",
    run: p => dispatch("place_sample", {sample:p.sample, target:p.dest}, "y:route_to_processor"),
  }],
  sample_placed: [{
    id:"y:begin_processing",
    run: p => dispatch("process_sample", {sample:p.sample, processor:p.at, attempt:1}, "y:begin_processing"),
  }],
  sample_processed: [{
    id:"y:store_when_done",
    run: p => dispatch("store_sample", {sample:p.sample, processor:p.processor}, "y:store_when_done"),
  }],
  processing_failed: [{
    id:"y:retry_processing",
    run: p => dispatch("process_sample",
      {sample:p.sample, processor:p.processor, attempt:p.attempt + 1}, "y:retry_processing"),
  }],
};

/* -------- projections: events → models -------- */

const samplesModel = new Map();   // built ONLY from folded events
const metrics = {picked:0, processed:0, failed:0, stored:0};

const trackerProj = {
  id:"j:sample_tracker", model:"m:samples",
  fold(name, p){
    const row = samplesModel.get(p.sample) || {state:"raw", location:"?"};
    if (name === "sample_picked")      row.location = "robot_arm";
    if (name === "sample_placed")      row.location = p.at;
    if (name === "sample_processed")   row.state = p.result;
    if (name === "processing_failed")  row.state = "raw · retrying";
    if (name === "sample_stored")    { row.location = "tray[" + p.slot + "]"; }
    samplesModel.set(p.sample, row);
  },
  render(p){
    const tb = $("#samplesTbl tbody");
    tb.innerHTML = "";
    const rows = [...samplesModel.entries()].sort((a,b) => b[0].localeCompare(a[0], undefined, {numeric:true}));
    for (const [id, r] of rows.slice(0, 7)){
      const tr = document.createElement("tr");
      if (id === p.sample) tr.className = "updated";
      tr.innerHTML = `<td class="sid">${id}</td><td>${r.location}</td><td>${r.state}</td>`;
      tb.appendChild(tr);
    }
  },
};
const metricsProj = {
  id:"j:lab_metrics", model:"m:throughput",
  fold(name){
    if (name === "sample_picked")     metrics.picked++;
    if (name === "sample_processed")  metrics.processed++;
    if (name === "processing_failed") metrics.failed++;
    if (name === "sample_stored")     metrics.stored++;
  },
  render(){
    for (const k in metrics){
      const n = $("#t-" + k);
      if (n.textContent != metrics[k]){
        n.textContent = metrics[k];
        n.classList.remove("bump"); void n.offsetWidth; n.classList.add("bump");
      }
    }
  },
};
const PROJECTIONS = {
  sample_picked:     [trackerProj, metricsProj],
  sample_placed:     [trackerProj],
  sample_processed:  [trackerProj, metricsProj],
  processing_failed: [trackerProj, metricsProj],
  sample_stored:     [trackerProj, metricsProj],
};

/* ================= controls / jobs ================= */

const nextRackSample = () => { const sl = rackSlots.find(r => r.vial); return sl && sl.vial; };

function startJob(sampleId, target){
  reservations[target] = true;
  updateButtons();
  dispatch("pick_sample", {sample:sampleId, target}, null);
}
function updateButtons(){
  document.querySelectorAll("[data-proc]").forEach(b => {
    b.disabled = reservations[b.dataset.proc];
  });
}
document.querySelectorAll("[data-proc]").forEach(b => b.addEventListener("click", () => {
  const sid = nextRackSample();
  if (!sid){ refillRack(); return; }
  startJob(sid, b.dataset.proc);
}));

function refillRack(){
  rackSlots.forEach((r, i) => { if (!r.vial) newSample(i); });
}
$("#refill").addEventListener("click", refillRack);

let auto = true;
const autoBtn = $("#auto");
autoBtn.classList.add("toggled");
autoBtn.addEventListener("click", () => {
  auto = !auto;
  autoBtn.classList.toggle("toggled", auto);
});
setInterval(() => {
  if (!auto || QUEUE.length > 4) return;
  const sid = nextRackSample();
  if (!sid){ refillRack(); return; }
  const free = Object.keys(procs).filter(k => !reservations[k] && !procs[k].vial);
  if (free.length) startJob(sid, free[Math.floor(Math.random() * free.length)]);
}, 1900);

/* ================= boot ================= */
refillRack();
setTimeout(() => { const sid = nextRackSample(); if (sid) startJob(sid, "centrifuge"); }, 700);
</script>
</body>
</html>

2b5bc67b-994 → 7f658ac7-291

File created successfully at: /home/conrad/website/project-dizzy-viz/fable/index.html (file state is current in your context — no need to Read it back) ...

422675ff-165 → 2b5bc67b-994

28086766-07c → 422675ff-165

Now let me render it and look at it — screenshotting at load and after a few seconds of simulation:

▼ 1 tool

dfd6c1a5-be7 → 28086766-07c

cd /tmp/claude-1000/-home-conrad-website-project-dizzy-viz-fable/96704997-a7af-4b0e-8074-b55b8e07e063/scratchpad && chromium-browser --headless=new --disable-gpu --window-size=1500,1050 --virtual-time-budget=8000 --screenshot=shot1.png file:///home/conrad/website/project-dizzy-viz/fable/index.html 2>&1 | tail -2; ls -la shot1.png

6ab2962a-d0b → dfd6c1a5-be7

Exit code 2
[1249982:1250167:0709/092954.938719:ERROR:components/headless/command_handler/headless_command_handler.cc:266] Failed to write file shot1.png: Permission denied (13)
ls: cannot access 'sho...

Exit code 2
[1249982:1250167:0709/092954.938719:ERROR:components/headless/command_handler/headless_command_handler.cc:266] Failed to write file shot1.png: Permission denied (13)
ls: cannot access 'shot1.png': No such file or directory

29c279fc-f34 → 6ab2962a-d0b

8bf0da32-7de → 29c279fc-f34

Snap chromium can't write to /tmp. Using home directory instead:

▼ 2 tools

0a4cda84-5c5 → 8bf0da32-7de

mkdir -p ~/tmp-dizzy-shots && cd ~/tmp-dizzy-shots && chromium-browser --headless=new --disable-gpu --window-size=1500,1050 --virtual-time-budget=8000 --screenshot=shot1.png file:///home/conrad/website/project-dizzy-viz/fable/index.html 2>&1 | tail -1; ls -la shot1.png

f5d61a4c-cad → 0a4cda84-5c5

177700 bytes written to file shot1.png
-rw-rw-r-- 1 conrad conrad 177700 Jul  9 09:30 shot1.png
Shell cwd was reset to /home/conrad/website/project-dizzy-viz/fable

be871ed7-7b3 → a2bef936-5cb

fd5f9c96-ce1 → be871ed7-7b3

Text and image content

b63ca3eb-6ab → fd5f9c96-ce1

89f50ad2-a99 → b63ca3eb-6ab

▼ 2 tools

05d49231-13e → 89f50ad2-a99

         <!-- heater -->
         <g id="m-heater" class="machine">
-          <rect class="shell" x="106" y="248" width="68" height="34" rx="6"/>
+          <rect class="shell" x="118" y="258" width="72" height="32" rx="6"/>
           <g id="coil">
-            <path d="M114 265 q6 -9 12 0 q6 9 12 0 q6 -9 12 0 q6 9 12 0 q6 -9 12 0"/>
+            <path d="M126 276 q6 -9 12 0 q6 9 12 0 q6 -9 12 0 q6 9 12 0 q6 -9 12 0"/>
           </g>
-          <circle class="lamp" cx="167" cy="255" r="3"/>
+          <circle class="lamp" cx="182" cy="266" r="3"/>
-          <text class="slabel" x="140" y="298">HEATER</text>
+          <text class="slabel" x="154" y="305">HEATER</text>
         </g>
 
         <!-- centrifuge -->
         <g id="m-centrifuge" class="machine">
-          <circle id="drum-ring" cx="320" cy="173" r="27"/>
+          <circle id="drum-ring" cx="320" cy="183" r="27"/>
-          <circle id="drum-spin" cx="320" cy="173" r="27"/>
+          <circle id="drum-spin" cx="320" cy="183" r="27"/>
-          <rect class="shell" x="296" y="203" width="48" height="12" rx="4"/>
+          <rect class="shell" x="296" y="212" width="48" height="12" rx="4"/>
-          <circle class="lamp" cx="336" cy="209" r="3"/>
+          <circle class="lamp" cx="336" cy="218" r="3"/>
-          <text class="slabel" x="320" y="231">CENTRIFUGE</text>
+          <text class="slabel" x="320" y="240">CENTRIFUGE</text>
         </g>
 
         <!-- scanner -->
         <g id="m-scanner" class="machine">
-          <rect class="shell" x="474" y="196" width="7" height="62" rx="2"/>
+          <rect class="shell" x="460" y="205" width="7" height="63" rx="2"/>
-          <rect class="shell" x="519" y="196" width="7" height="62" rx="2"/>
+          <rect class="shell" x="509" y="205" width="7" height="63" rx="2"/>
-          <rect class="shell" x="470" y="188" width="60" height="10" rx="4"/>
+          <rect class="shell" x="456" y="197" width="64" height="10" rx="4"/>
-          <line id="laser" x1="483" y1="222" x2="517" y2="222"/>
+          <line id="laser" x1="470" y1="228" x2="506" y2="228"/>
-          <circle class="lamp" cx="524" cy="193" r="3"/>
+          <circle class="lamp" cx="514" cy="202" r="3"/>
-          <text class="slabel" x="500" y="274">SCANNER</text>
+          <text class="slabel" x="488" y="284">SCANNER</text>
         </g>

5877ca15-c37 → 05d49231-13e

The file /home/conrad/website/project-dizzy-viz/fable/index.html has been updated successfully. (file state is current in your context — no need to Read it back)

d1aabbcf-ef0 → 5877ca15-c37

 const procs = {
-  heater:     {port:{x:140, y:222}, vial:null, busy:false, el:"#m-heater",     result:"heated"},
+  heater:     {port:{x:152, y:232}, vial:null, busy:false, el:"#m-heater",     result:"heated"},
-  centrifuge: {port:{x:320, y:158}, vial:null, busy:false, el:"#m-centrifuge", result:"separated"},
+  centrifuge: {port:{x:320, y:168}, vial:null, busy:false, el:"#m-centrifuge", result:"separated"},
-  scanner:    {port:{x:500, y:212}, vial:null, busy:false, el:"#m-scanner",    result:"scanned"},
+  scanner:    {port:{x:488, y:232}, vial:null, busy:false, el:"#m-scanner",    result:"scanned"},
 };

93644ef6-e63 → d1aabbcf-ef0

The file /home/conrad/website/project-dizzy-viz/fable/index.html has been updated successfully. (file state is current in your context — no need to Read it back)

5e3fd1a8-412 → 93644ef6-e63

Now the IK elbow branch, sweep bulge, hover offsets, and graph layout fixes:

▼ 3 tools

34be387c-364 → 5e3fd1a8-412

   const phi = Math.atan2(vy, vx);
   const a = Math.acos(Math.max(-1, Math.min(1, (L1*L1 + dc*dc - L2*L2) / (2*L1*dc))));
-  const shAng = phi + a;                  // elbow-up
+  const shAng = phi + (vx >= 0 ? a : -a); // elbow-up on either side of the base

1780c28e-ada → 34be387c-364

The file /home/conrad/website/project-dizzy-viz/fable/index.html has been updated successfully. (file state is current in your context — no need to Read it back)

8b52d2bf-631 → 1780c28e-ada

   await tween(dur, k => {
     const th = a.th + dth*k;
-    let r = a.r + (b.r - a.r)*k - Math.sin(Math.PI*k) * Math.min(52, Math.abs(dth)*46);
+    // bulge outward mid-sweep: the arm extends nearly straight, so the
+    // elbow-side handoff at the top of the arc is invisible
+    let r = a.r + (b.r - a.r)*k;
+    r += Math.sin(Math.PI*k) * Math.max(0, Math.min(60, (L1 + L2 - 8) - r));
     tip = fromPolar(th, Math.max(58, r));
     renderArm();
   });

176ce1c9-10a → 8b52d2bf-631

The file /home/conrad/website/project-dizzy-viz/fable/index.html has been updated successfully. (file state is current in your context — no need to Read it back)

fa587a86-998 → 176ce1c9-10a

 const grabPt  = anchor => ({x: anchor.x, y: anchor.y - 7});
-const hoverPt = anchor => ({x: anchor.x, y: anchor.y - 46});
+const hoverPt = anchor => ({x: anchor.x, y: anchor.y - 34});

4893302a-c5e → fa587a86-998

The file /home/conrad/website/project-dizzy-viz/fable/index.html has been updated successfully. (file state is current in your context — no need to Read it back)

f33ae0cb-ba3 → 4893302a-c5e

▼ 1 tool

1f1d29e9-4ca → f33ae0cb-ba3

python3 - <<'EOF'
import re
s = open('index.html').read()

# widen nodes, shrink label font
s = s.replace('const W = 132, H = 26;', 'const W = 150, H = 26;')
s = s.replace('.gnode text.nlabel{font:10.5px var(--mono)', '.gnode text.nlabel{font:10px var(--mono)')

# column x positions
s = s.replace('x:85,  y:110', 'x:88,  y:110').replace('x:85,  y:195', 'x:88,  y:195')
s = s.replace('x:85,  y:280', 'x:88,  y:280').replace('x:85,  y:365', 'x:88,  y:365')
s = s.replace('x:245, y:', 'x:250, y:')
s = s.replace('x:405, y:', 'x:412, y:')
s = s.replace('x:582, y:', 'x:585, y:')
s = s.replace('x:490, y:508', 'x:498, y:508').replace('x:490, y:588', 'x:498, y:588')
s = s.replace('[["COMMANDS",85],["PROCEDURES",245],["EVENTS",405],["POLICIES",582]]',
              '[["COMMANDS",88],["PROCEDURES",250],["EVENTS",412],["POLICIES",585]]')
s = s.replace('{class:"gcolhead", x:395, y:478}', '{class:"gcolhead", x:399, y:474}')

# route event->projection edges through side corridors; projection->model straight down
old = '''    } else if (kind === "down"){
      dPath = `M ${s.x} ${s.y + H/2} C ${s.x} ${s.y + 62}, ${t.x} ${t.y - 58}, ${t.x} ${t.y - H/2}`;
    } else {'''
new = '''    } else if (kind === "down"){
      if (b[0] === "m"){
        dPath = `M ${s.x} ${s.y + H/2} L ${t.x} ${t.y - H/2}`;
      } else {
        const side = t.x < s.x ? -1 : 1;          // tracker exits left, metrics exits right
        const corridorX = side < 0 ? 331 : 498;   // gaps between the graph columns
        dPath = `M ${s.x + side*W/2} ${s.y} C ${corridorX} ${s.y}, ` +
                `${t.x + side*14} ${t.y - 95}, ${t.x + side*5} ${t.y - H/2}`;
      }
    } else {'''
assert old in s
s = s.replace(old, new)

# reserve a sample when a job claims it, so AUTO can't double-book it
old = 'const nextRackSample = () => { const sl = rackSlots.find(r => r.vial); return sl && sl.vial; };'
new = ('const nextRackSample = () => {\n'
       '  const sl = rackSlots.find(r => r.vial && !samples.get(r.vial).job);\n'
       '  return sl && sl.vial;\n'
       '};')
assert old in s
s = s.replace(old, new)
old = '''function startJob(sampleId, target){
  reservations[target] = true;'''
new = '''function startJob(sampleId, target){
  samples.get(sampleId).job = true;
  reservations[target] = true;'''
assert old in s
s = s.replace(old, new)

# force-reflow idiom fix
s = s.replace('void s.el.getBBox;', 'void s.el.getBoundingClientRect();')

open('index.html','w').write(s)
print("ok")
EOF

53de7a0f-88b → 1f1d29e9-4ca

ok

ad111326-aa1 → 682b15b4-dbd

6f38c18e-253 → ad111326-aa1

Now re-rendering to verify the fixes — two screenshots at different virtual times to catch different arm poses:

▼ 3 tools

cb660d07-457 → 6f38c18e-253

cd ~/tmp-dizzy-shots && chromium-browser --headless=new --disable-gpu --window-size=1500,1050 --virtual-time-budget=6000 --screenshot=shot2.png file:///home/conrad/website/project-dizzy-viz/fable/index.html 2>&1 | tail -1 && chromium-browser --headless=new --disable-gpu --window-size=1500,1050 --virtual-time-budget=20000 --screenshot=shot3.png file:///home/conrad/website/project-dizzy-viz/fable/index.html 2>&1 | tail -1

cb997551-df4 → cb660d07-457

182419 bytes written to file shot2.png
182494 bytes written to file shot3.png
Shell cwd was reset to /home/conrad/website/project-dizzy-viz/fable

c866ac59-8ea → add1bbfa-0c5

1b14f198-c66 → c866ac59-8ea

Text and image content

49903d75-7bf → c866ac59-8ea

6b8e9f47-808 → 1b14f198-c66

6dea457c-8f7 → 6b8e9f47-808

▼ 3 tools

604945da-67e → 6dea457c-8f7

 function tween(dur, fn){
   return new Promise(res => {
-    const t0 = performance.now();
+    let t0 = null;
     const step = t => {
+      if (t0 === null) t0 = t;
       const k = Math.min(1, (t - t0) / dur);

94854943-153 → 604945da-67e

The file /home/conrad/website/project-dizzy-viz/fable/index.html has been updated successfully. (file state is current in your context — no need to Read it back)

6d0add53-882 → 94854943-153

cd ~/tmp-dizzy-shots && chromium-browser --headless=new --disable-gpu --window-size=1500,1050 --virtual-time-budget=35000 --screenshot=shot4.png file:///home/conrad/website/project-dizzy-viz/fable/index.html 2>&1 | tail -1

6462d6ef-9e3 → 6d0add53-882

182167 bytes written to file shot4.png
Shell cwd was reset to /home/conrad/website/project-dizzy-viz/fable

7263a505-8ab → 6462d6ef-9e3

b4f94629-7f3 → 7263a505-8ab

Text and image content

9ec6cd44-250 → b4f94629-7f3

e586989c-1c5 → 9ec6cd44-250

▼ 2 tools

0e316c0b-443 → e586989c-1c5

cd /tmp/claude-1000/-home-conrad-website-project-dizzy-viz-fable/96704997-a7af-4b0e-8074-b55b8e07e063/scratchpad && npm init -y >/dev/null 2>&1 && timeout 90 npm install puppeteer-core --no-audit --no-fund 2>&1 | tail -1

30462a0c-385 → 0e316c0b-443

added 23 packages in 4s
Shell cwd was reset to /home/conrad/website/project-dizzy-viz/fable

f88dc0f5-f2a → 30462a0c-385

cd /tmp/claude-1000/-home-conrad-website-project-dizzy-viz-fable/96704997-a7af-4b0e-8074-b55b8e07e063/scratchpad && cat > snap.js <<'EOF'
const puppeteer = require('puppeteer-core');
(async () => {
  const browser = await puppeteer.launch({
    executablePath: '/usr/bin/chromium-browser',
    headless: 'new',
    args: ['--no-sandbox', '--disable-gpu'],
  });
  const page = await browser.newPage();
  await page.setViewport({width: 1500, height: 1060});
  const errors = [];
  page.on('pageerror', e => errors.push('PAGEERROR: ' + e.message));
  page.on('console', m => { if (m.type() === 'error') errors.push('CONSOLE: ' + m.text()); });
  await page.goto('file:///home/conrad/website/project-dizzy-viz/fable/index.html');
  // crank speed to 3x so we see deep pipeline state quickly
  await page.evaluate(() => { const s = document.querySelector('#speed'); s.value = 3; s.dispatchEvent(new Event('input')); });
  for (const [t, name] of [[9000,'rt1.png'],[14000,'rt2.png'],[26000,'rt3.png']]) {
    await new Promise(r => setTimeout(r, name === 'rt1.png' ? t : t - (name === 'rt2.png' ? 9000 : 14000)));
    await page.screenshot({path: '/home/conrad/tmp-dizzy-shots/' + name});
  }
  const state = await page.evaluate(() => document.querySelector('#armstate').textContent
    + ' | tiles: ' + [...document.querySelectorAll('.tile .v')].map(n => n.textContent).join(','));
  console.log('STATE:', state);
  console.log(errors.length ? errors.join('\n') : 'no page errors');
  await browser.close();
})();
EOF
node snap.js

f261222f-7de → f88dc0f5-f2a

STATE: arm: stowing S8 | tiles: 9,8,5,6
no page errors
Shell cwd was reset to /home/conrad/website/project-dizzy-viz/fable

bdd6b464-7e2 → f261222f-7de

c74e57c3-f44 → bdd6b464-7e2

▼ 2 tools

e9b7090d-14b → c74e57c3-f44

e5ea18c6-909 → e9b7090d-14b

Text and image content

4c8c30a0-3b1 → e5ea18c6-909

340d5d24-2f2 → 4c8c30a0-3b1

Text and image content

0ad271a1-46c → 340d5d24-2f2

cac0fdc7-5be → 0ad271a1-46c

▼ 1 tool

d2ebe7bf-773 → cac0fdc7-5be

rm -rf ~/tmp-dizzy-shots

f9a1dd7a-eca → d2ebe7bf-773

(Bash completed with no output)

6656a4bd-893 → 6cb0fa8e-9c4

Done! fable/index.html is a single self-contained vanilla HTML/JS page — open it directly in a browser, no server or dependencies needed. I verified it end-to-end in a real headless browser (screenshots at several points, zero console errors, full jobs flowing through: 9 picked / 8 processed / 5 failed-and-retried / 6 stored in one run).

What you get — three panels telling one story:

Physical world — a two-link robot arm (real inverse kinematics, elbow-up, polar sweeps that extend over the top of the base) picks sample vials from a rack and delivers them to a heater (glowing coil, liquid turns orange), centrifuge (spinning drum, liquid separates into layers), or scanner (sweeping laser), then stows them in the output tray. Buttons dispatch jobs; AUTO keeps the lab running; a speed slider scales everything.
Queue — every command and event lands here as a chip: commands show queued → ✓ handled, events are marked fact (failures get a red accent).
Component network — the .feat.yaml drawn as a graph using dizzy's vocabulary (c/d/e/y/j/m badges, colors validated with the dataviz palette checker). Pulses travel edge-by-edge: command → procedure → event, then fan out to policies (whose dispatches ride dashed feedback arcs back to the command column — the reactivity loop) and down to projections → models (the data loop). Hovering any node explains its role.

The dizzy ideas it makes visible:

Nothing calls anything directly — begin_processing reacts to sample_placed; the whole pick→place→process→store chain is policies chaining commands off facts.
Failures are facts: processing fails ~20% of the time, emits processing_failed, and the retry_processing policy dispatches attempt 2.
Read models are rebuilt from events only — the samples table and throughput tiles update only when a projection pulse lands, so they visibly lag the physical scene (eventual consistency you can watch).
Because processors run without the arm, the command queue naturally pipelines: the arm fetches the next sample while the centrifuge spins.

One honest caveat from verification: I confirmed behavior via real-time browser runs and stills; the one thing I couldn't fully exercise headlessly is long-run soak (many minutes of AUTO), so if you leave it running and something wedges, tell me and I'll dig in. A fun next step could be a "replay" button that clears the models and refolds the whole event stream — the most dizzy trick of all.

c1b426c2-f8f → 42581b88-611

Built the DIZZY visualization: fable/index.html, a standalone page with a robot arm scene, command/event queue, and animated component network graph, verified working in a headless browser. Next action: open it in your browser and try it.

0a6797c3-c6a → c1b426c2-f8f

go ahead and push

go ahead and push

▼ 2 thoughts, 1 assistant, 1 more

▼▼ 2 thoughts, 2 tools, 2 more total

6b164093-e73 → 90a7f845-128

▼ 1 tool

677eb0c6-02b → 6b164093-e73

git status --short && git log --oneline -1

5b10ad27-76f → 677eb0c6-02b

?? ../PROMPT.md
?? ./
c8adfca Add DIZZY lab arm visualizer

f91b072e-577 → 5b10ad27-76f

▼ 1 tool

dda9a31f-a14 → f91b072e-577

git add index.html && git commit -m "$(cat <<'EOF'
Add DIZZY LAB interactive visualization

Standalone HTML/JS page showing a mock robot arm lab driven by dizzy's
two loops: commands → procedures → events → policies, and events →
projections → models, with a live message queue and component network
graph.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
EOF
)" && git push

e7d63989-537 → dda9a31f-a14

[main b7a0a35] Add DIZZY LAB interactive visualization
 1 file changed, 933 insertions(+)
 create mode 100644 project-dizzy-viz/fable/index.html
To github.com:ConradMearns/website.git
   c8adfca..b7a0...

[main b7a0a35] Add DIZZY LAB interactive visualization
 1 file changed, 933 insertions(+)
 create mode 100644 project-dizzy-viz/fable/index.html
To github.com:ConradMearns/website.git
   c8adfca..b7a0a35  main -> main

6a3bc887-caf → e7d63989-537

Pushed — b7a0a35 on main adds project-dizzy-viz/fable/index.html. I left PROMPT.md (untracked, one directory up) alone since it isn't part of the visualization; say the word if you want it committed too. The new cSpell diagnostics are just the spell-checker flagging CSS class names and abbreviations like procs/gnode — nothing functional.

983c8ec6-ee2 → d3f0899c-253

Built the DIZZY LAB visualization: a standalone HTML page with a robot arm, message queue, and component network graph, verified in a headless browser and pushed to main. Next action: none, unless you want tweaks or PROMPT.md committed.

891f2626-fe3 → 983c8ec6-ee2

/dataviz

a3325a27-03e → 891f2626-fe3

109 lines

Base directory for this skill: /tmp/claude-1000/bundled-skills/2.1.205/b0138c40fb059adf2818aacc15cb173e/dataviz

Data Visualization

A chart is read by people and executed by you. This skill turns "make it look
good" into a procedure with checks, so the result is right by construction rather
than by taste.

The method here is design-system-agnostic. Nothing in the procedure, the form
heuristic, the six checks, or the mark specs is specific to one product. A design

...

Base directory for this skill: /tmp/claude-1000/bundled-skills/2.1.205/b0138c40fb059adf2818aacc15cb173e/dataviz

Data Visualization

A chart is read by people and executed by you. This skill turns "make it look
good" into a procedure with checks, so the result is right by construction rather
than by taste.

The method here is design-system-agnostic. Nothing in the procedure, the form
heuristic, the six checks, or the mark specs is specific to one product. A design
system supplies a small set of parameters (its ramps, a categorical order, a
diverging pair, a status palette, a texture, its surfaces, its filter components);
the method consumes them unchanged. A validated default palette is the
reference instance, fully specified in references/palette.md. To target your
brand, read that file's structure and substitute its values — touch nothing else.

The single most important habit: the color part is computable, so compute it.
Never eyeball whether a palette is colorblind-safe — run scripts/validate_palette.js.

The procedure — do these in order

Color comes LAST. Most bad charts pick colors first.

Pick the form. What is the data's job — magnitude, identity, polarity, a
single headline, change-over-time? The job picks the chart type, and sometimes
the answer is not a chart (a stat tile or hero number). → references/choosing-a-form.md
Assign color by the job it does. Categorical (identity), sequential
(magnitude), diverging (polarity), or status (state) — each has one rule.
Assign categorical hues in fixed order, never cycled. → references/color-formula.md
VALIDATE the palette — run the script, don't reason about ΔE.
node scripts/validate_palette.js "<hex,hex,…>" --mode light (relative to
this skill's base directory — or load it as <script type="module"> in the
chart's own page, where it reads
data-palette off <body> and logs a console.table report). It returns
pass/fail on the lightness band, chroma floor, adjacent-pair CVD separation,
and contrast. Fix anything that FAILs before continuing. Re-run for
--mode dark with that mode's surface.
Apply mark specs & spacers. Thin marks, 4px rounded data-ends anchored to
the baseline, 2px lines, ≥8px markers, a 2px surface gap between fills (stacked
segments and adjacent bars alike) and a 2px surface ring on overlapping marks,
selective direct labels. → references/marks-and-anatomy.md
Add the hover layer — by default. An HTML/SVG chart is interactive; ship
a crosshair+tooltip on line/area and a per-mark hover tooltip on bar/dot/cell.
The only form that skips it is a bare stat tile with no plot. Hit targets bigger
than the mark; filters in one row above the charts. → references/interaction.md
Final accessibility pass. For ≥ 2 series a legend is always present and ≤ 4
are also direct-labeled (a single series needs no legend box — the title names
it), so identity is never color-alone; a table view exists; dark mode is selected — its own
steps from the same ramps, validated against the dark surface, not an automatic
flip; texture is available for the CVD/print/forced-colors case.
Render it and look at it. The validator checks color, not layout — open or
screenshot the output and eyeball it for label collisions, geometry, and overflow
before calling it done.

Then check the result against references/anti-patterns.md — it is the catalog
of what goes wrong. If your chart matches an entry, it's wrong.

Non-negotiables (true in every design system)

Assign categorical hues in fixed order, never cycled. A 9th series is never a
generated hue — it folds into "Other," small multiples, or composite encoding.
One axis. Never a dual-axis chart (two y-scales). Two measures of different
scale → two charts, small multiples, or indexed to a common base. (This is the
#1 chart mistake — see anti-patterns.)
Color follows the entity, never its rank. A filter that changes the series
count must not repaint the survivors.
Sequential = one hue, light→dark. Diverging = two hues + a neutral gray
midpoint. Never a rainbow; never a hue at the diverging midpoint.
Run the validator before shipping any categorical palette. CVD ≥ 12 is the
target; 8–12 is a floor that is legal ONLY with secondary encoding. A contrast WARN
obligates visible labels or a table view — it is not dismissable.
Thin marks; a legend always present for ≥ 2 series (none for one), with
selective direct labels (never a number on every point); recessive grid/axes.
Text wears text tokens, never the series color — values, labels, and legends
stay in primary/secondary/muted ink; a colored mark beside them carries identity.
Status colors are reserved (good/warning/serious/critical) and never reused
for "series 4"; they ship with an icon + label, never color alone.

Plugging in a design system

The method is invariant; only these parameters change per system. The reference
instance — every value filled in — is references/palette.md.

Parameter	What the system provides
Ramps	the hue scales (named steps) the palette draws from
Categorical theme	the fixed hue order (a named theme); default + alternates
Sequential hue	the default single hue for magnitude
Diverging pair	two warm/cool poles + a neutral midpoint
Status palette	good / warning / serious / critical — steps distinct from categorical
Texture fill	one directional hand-drawn fill, used at 45° / 135°
Surfaces	light & dark chart-surface colors (the validator needs these)
Filter controls	date-range & dimension controls (behavioral spec in `interaction.md`)

To onboard a new system: fill those rows, feed its ramps to the validator, and let
it snap each slot to the nearest passing step. Structure and rules stay as written.

Reference files

File	What it answers
`references/choosing-a-form.md`	Which chart type / is it even a chart?
`references/color-formula.md`	The four jobs, the six checks, snap-to-passing
`references/marks-and-anatomy.md`	Mark specs, spacers, labels, figures, hero number
`references/interaction.md`	Tooltips & hover, filters & time ranges
`references/components.md`	The pieces a chart is made of — build each in plain HTML
`references/anti-patterns.md`	What goes wrong — check every chart against this
`references/palette.md`	The reference palette instance — every parameter, filled in; swap for your brand's
`scripts/validate_palette.js`	Runnable six-checks validator (run it; don't eyeball)

4777203a-fbb → f4c83b02-d8f

Continue from where you left off.

▼ 1 assistant

bd00c2dc-7c2 → 4777203a-fbb

No response requested.

969bf254-664 → bd00c2dc-7c2

Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.

54e9e158-ca0 → 969bf254-664

/export

e6cf0ca9-1c2 → 54e9e158-ca0

Conversation exported to: /home/conrad/website/project-dizzy-viz/fable/2026-07-09-114446-hello-lets-do-something-fun-i-want-you-to-run.txt

▼ 1 user

▼▼ 1 user, 1 system total

d5526494-86f

Caveat: The messages below were generated by the user while running local commands. DO NOT respond to these messages or otherwise consider them in your response unless the user explicitly asks you to.

6338c1a8-4c9 → d5526494-86f

/clear

▼ 1 system

ca0ec75d-6b6 → 6338c1a8-4c9

ℹ️

Claude Transcripts - fable

Sessions

Data Visualization

Data Visualization

The procedure — do these in order

Non-negotiables (true in every design system)

Plugging in a design system

Reference files

Data Visualization

Data Visualization

The procedure — do these in order

Non-negotiables (true in every design system)

Plugging in a design system

Reference files

Claude Transcripts - fable

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Sessions

Data Visualization

Data Visualization

The procedure — do these in order

Non-negotiables (true in every design system)

Plugging in a design system

Reference files

Data Visualization

Data Visualization

The procedure — do these in order

Non-negotiables (true in every design system)

Plugging in a design system

Reference files