clay-borg/evidence/CB-EV-0012-execute-the-javascript.md

# CB-EV-0012 — the loop is closed, and the budget is blind

CB-WP-0014 T03. Measured 2026-08-02 at `55212d7`+. Pass kind `product`,
tier **M** (chaos d4=2, no override). Declaration 9 of 12.

**Applying CB-EV-0011 §4's proposed rule, and hereby adopting it:** the
cost table below quotes the **previous** pass's final figure and marks
this pass's own as provisional. See §5.

---

## 1. What was actually blocking stage 1, and what it cost to find out

CB-EV-0010 §4 said the emitted JavaScript had never run. That sentence was
carried for a pass on an assumption nobody checked. **`node` v24.11.1 was
on the machine the whole time.**

That is the fourth consecutive pass whose central finding was a claim
carried because nobody ran the command that settles it — after the 3,750
headroom figure, the "empty" sub-100k dependency region, and SH-3's 0.0%.
The pattern is stable enough now to name: **this project's characteristic
error is not faulty reasoning, it is unexecuted verification.** Every one
was cheap to check and none had been checked.

## 2. The loop, closed

The real server serves the real page → QuickJS runs *that page's own two
`<script>` blocks* → the gesture goes over a real socket → the seat's
`Choice` comes back.

Before this, every link was tested and the chain was not. The page was
asserted against as a parsed document; the socket was driven by synthetic
HTTP this test suite wrote itself. **A page whose JavaScript sent
something else entirely would have passed everything.**

Control 5 — *the page may not construct commands* — was held up by a test
that grepped the emitted script for game vocabulary. It is now asserted on
what the script actually puts on the wire, and the mutation that makes the
JS post `command=SelectAction&target=…` turns it red.

**A wrong assertion worth keeping.** The first draft required the body not
to contain `"attack"`. It legitimately does — the body is
`down=action-attack&up=seat-1`, and `action-attack` is *the id of an
element a finger landed on*. An element may name an action; that is not
the page deciding anything. What distinguishes reporting from deciding is
the **shape**: exactly two fields, `down` and `up`, carrying two ids and
nothing derived from them.

## 3. AM-4b is blind to more source than its own target

ADR-0009's first draft priced `quick-js` at *"35% of AM-4b's remaining
headroom."* After it landed, `make dep-weight` reported AM-4b
**unchanged**.

| | crates | lines |
|---|---:|---:|
| AM-4b as instrumented (`games-ground`, `--edges normal`) | 29 | 317,021 |
| the whole workspace, including dev edges | 57 | 725,258 |
| **uncounted** | **28** | **408,237** |

AM-4b measures one package and no dev edges. `criterion`, `clap`,
`ciborium` and now `quick-js` are invisible to it.

**This is the same defect the ADR refuses `node` for** — a real
acquisition scoring zero because the instrument does not look there. The
decision still stands, because `quick-js` is pinned and auditable and
`node` is neither, but it stands on the **acquisition rule alone**. The
affordability argument is withdrawn: there is none to be had until AM-4b
can see what it is buying.

Third defect in the AM-4 family, and the second found by a pass that was
*using* the instrument rather than auditing it:

| defect | status |
|---|---|
| shipped-runtime counted proc-macro crates (89,048 lines) | fixed, ADR-0008 D2 |
| AM-4b's own proc-macro share | unmeasured, owed |
| **AM-4b's scope: one package, no dev edges (408,237 lines)** | **found here, owed** |

## 4. INTENT stage 1, deliverable by deliverable

| deliverable | status |
|---|---|
| card/token/hand/**relationship-graph** visualization | **emitted and gated** — 41 of 42 leaf paths asserted present in the *parsed* document. **Never seen.** |
| drag-to-propose | **evidenced end to end** — JS gesture → socket → `Choice` |
| debug inspector | **evidenced** (CB-WP-0011) — walks bundles and scenarios, hash-verified |
| hot-seat play | **evidenced** — two seats, one listener, the projection follows the seat |

The last one was the closest to being claimed on the strength of the code
path existing. `SeatPolicy` hands every human seat a handle on one shared
`Server`, so turn-taking "obviously" worked — and nothing drove more than
one seat until this pass. The property that matters is not that two turns
happen but that **the same tab, asked twice, shows two different hands**;
mutating the projection to serve P1's view to every seat turns it red.

### The stage stays open, on one named blocker

Three of four deliverables are evidenced by executing code. The first is
evidenced only as *correctly emitted*: QuickJS has no layout engine, no
browser is available here, and no test in this repo can establish that an
SVG table is legible or that a drag feels like a drag.

**Everything testable from here has been tested.** What remains is one
human action: run `cb-play --serve 0`, open the printed URL, and confirm
the table reads and a drag works. That is the whole of the remaining
blocker, it is the maintainer's to do, and it is named here so the stage
is no longer carried on a vague reservation.

Closing it unilaterally would be the failure mode stage 0 avoided.
Carrying it *vaguely* was the failure mode this pass found.

## 5. Cost, shape, and the rule now adopted

| pass | kind | responses | cost | $/response |
|---|---|---|---|---|
| CB-WP-0012 | product | 97 | $14.52 | 0.150 |
| **CB-WP-0013** (final) | meta | 47 | **$8.26** | **0.176** |
| CB-WP-0014 | product | *provisional — see below* | | |

**The rule is adopted.** CB-EV-0011 proposed that an evidence file quote
the previous pass's final cost and never its own. CB-WP-0013 reported
itself at $5.78/34 responses mid-flight; final is **$8.26/47** — under by
43%. Four for four, always low. This file quotes CB-WP-0013 and declines
to quote itself, and future evidence files should do the same.

**Meta budget: 29% `[OVER]`** the soft 25%, driven by CB-WP-0013's $8.26
sitting in a trailing three with two cheap product passes. Reported under
the rule that requires reporting it; no product work was displaced, and
CB-WP-0013 was an instrument repair, which ADR-0006 D2 exempts anyway.

**SH-1 is at 347,720 `[HARD]`** against a 300,000 ceiling. The remedy is a
compaction and it is free, and it is not something this session can do for
itself. **CB-EV-0009's standing prediction is now live and testable**: if
the next pass opens above the SH-1 hard line, it should cost more per
response than 0.123. It has been unfalsified for three passes because
every one of them opened below the line.

## 6. Open

- **AM-4b's scope defect (408,237 uncounted lines)** and its unmeasured
  proc-macro share. §3.
- **`python3` as a toolchain dependency was never argued.** ADR-0009
  declined to lean on it as precedent and left it owed.
- **INTENT stage 1: one human verification.** §4.
- **AM-4a still cannot survive stage 2** — 1,741,979 against 161,000,
  10.8×. Reserved for the maintainer since ADR-0007.
- **ADR-0007 D3's acquisition rule** remains unratified — and it has now
  decided two dependency questions, which raises rather than lowers the
  cost of leaving it unratified.
- **Chaos: 9 of 12 declarations, 1 override.**