Wave 5 exit - record what shipped and where the counts landed

First field-visible wave. Waves 1-4 moved almost nothing on screen; every page
in this one looks different.

Baseline counts, against wave 0
  <div onclick>              12 -> 2    (T5.1 took exactly ten)
  native dialogs app-wide    79 -> 64   (T5.1 2, T5.2 1, T5.8 13)
  ...in the SOP wizard       14 -> 0
  ...in the creator          43 -> 43   wave 7's
  colour literals outside theme-light.css   0 -> 0, held
  SOP wizard steps           10 -> 12   (T5.4 Locations, T5.5 Sections)

Six probes now cover this wave, 399 checks between them, each written because
its task's done-when could not be checked by anything that already existed.

Screenshots re-captured at 390 and 1440 across all seven pages. One overflow,
the known creator@390 (BL-001), unchanged. The two beforeunload log lines on
sop@1440 and creator@1440 are present at wave 4 too - captured both sides during
T5.1 rather than assuming.

BL-010 is honestly unchanged: every rule wave 5 added consumes --wp-s*, and none
of the 829 pre-existing spacing/type/radius literals were converted, because
none of the pages carrying them were re-laid-out here. T7.1 still owns it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

docs/waves/wave-5.md

@@ -232,8 +232,79 @@ from wave 0 must go down.
 
 ## Wave 5 exit criteria
 
-- [ ] the stepper is keyboard operable and `<div onclick>` count dropped by at least 10
-- [ ] section toggles work end to end, including the export
-- [ ] Acumatica fields and Assets are hidden by configuration, with no data deleted
-- [ ] the wizard has no `alert()` calls left
-- [ ] first-run users can create a project
+- [x] the stepper is keyboard operable and `<div onclick>` count dropped by at least 10
+      — **12 → 2**, exactly ten, and the two survivors are wave 7's and wave 9's
+- [x] section toggles work end to end, including the export
+- [x] Acumatica fields and Assets are hidden by configuration, with no data deleted
+- [x] the wizard has no `alert()` calls left — **0**, raw and comment-stripped
+- [x] first-run users can create a project
+
+---
+
+## Wave 5 exit — what shipped, and what it cost
+
+First field-visible wave. Everything before this was prerequisites, and the difference
+shows: waves 1–4 moved almost nothing on screen, and every page in this one looks
+different.
+
+### The tasks
+
+| Task | Items | What landed |
+|---|---|---|
+| `T5.1` | `A4` `S9` | Vertical stepper, ten real `<button>`s, keyboard operable, states in words |
+| `T5.2` | `B3` | First-run empty state, then the picker card removed; switching moved to the app bar |
+| `T5.3` | `B4` UI | Four-cell pipeline strip, every number from the server, every cell a shareable link |
+| `T5.4` | `CR-005` | Per-project Building / Floor / Sector taxonomy — new table, four routes, step 11 |
+| `T5.5` | `CR-006` | Section toggles, shared registry, form + detail view + export |
+| `T5.6` | `CR-002` | Acumatica cost code and task, hidden by field toggle |
+| `T5.7` | `CR-016` | Assets off for Micron EUV, by configuration |
+| `T5.8` | `S1` wizard | Inline validation on five steps; thirteen native dialogs retired |
+
+### Baseline counts
+
+| Metric | Wave 0 | End of wave 5 | Moved by |
+|---|---|---|---|
+| `<div onclick>` | 12 | **2** | `T5.1` |
+| native dialogs app-wide | 79 | **64** | `T5.1` (2), `T5.2` (1), `T5.8` (13) |
+| …of those, in the SOP wizard | 14 | **0** | `T5.8` |
+| …of those, in the creator | 43 | 43 | wave 7 |
+| colour literals outside `theme-light.css` | 0 | **0** | held |
+| SOP wizard steps | 10 | **12** | `T5.4`, `T5.5` |
+
+### Probes added
+
+Five, each written because its task's done-when could not be checked by anything that
+already existed. Run them **one at a time**.
+
+```bash
+python tests/stepper_check.py       # A4/S9    71 checks
+python tests/launcher_check.py      # B3       58 checks (two seeded databases)
+python tests/pipeline_check.py      # B4 UI    43 checks
+python tests/locations_check.py     # CR-005   58 checks
+python tests/sections_check.py      # CR-006/CR-002/CR-016   88 checks
+python tests/validation_check.py    # S1       81 checks
+```
+
+### The four things the probes caught that a review would not have
+
+1. **`T5.1`** — the rail did not track the form. Fill step 1 and every step ahead stayed
+   padlocked until you navigated. A rail that lies about the form is worse than the strip
+   it replaced, because that one at least lied consistently.
+2. **`T5.2`** — `f_items.py`'s `F1` went `INCONCLUSIVE`, not `FAIL`. Its probe drove the
+   picker card's `<select>`, which `B3` deleted. It refused to guess, which is the
+   behaviour `f_items` exists for.
+3. **`T5.3`** — a pipeline link landed on "complete the SOP first". Not the strip's fault:
+   `browser_check`'s fixture stores a SOP shape production never writes. Logged as BL-018.
+4. **`T5.6`** — a probe reported the cost code being eaten by a section toggle. It was not;
+   the probe used an invented code and `wp_cost` is a `<select>` that silently drops an
+   unknown value. That silent drop is real, is not this wave's, and is BL-019.
+
+### Open, carried into wave 6 and beyond
+
+- **BL-010** (raw spacing and type values) is **unchanged**. Every rule wave 5 added
+  consumes `--wp-s*`; none of the 483/281/65 pre-existing literals were converted, because
+  none of the pages carrying them were re-laid-out here. `T7.1` still owns it.
+- **X4** is resolved rather than deferred — see `T5.5`'s commit. The SOP-borne propagation
+  path is unaffected by `B7`; the live hand-off across the frame is what `T7.1` removes.
+- **BL-018** (the WP tab's gate is the last `localStorage`-derived status) is the one
+  finding in this wave that is a real user-facing weakness rather than a test artefact.