T9.7 + wave 9 exit - all 65 items, reconciled

docs/reference/completion.md walks every item: the 55 from IMPLEMENTATION.md
section 6 and the 10 from decisions-2026-08-18.md. For each: status, the task
that delivered it, the probe that re-verifies it on every run, and every
deviation from written acceptance criteria - B7's page-not-merge (measured),
CR-014's email body (the no-customer-IP rule won), CR-008's merge-vs-list
(recommended, not decided), F6's 2.17-vs-2.0 (BL-022), S1's residual 21
dialogs (BL-024).

The four out-of-scope items are confirmed unbuilt - two of them by probes
that grep for their fields on every run. Section 8's outstanding inputs are
restated (the material workbook and the B100 list still have not arrived;
both upload paths are ready). The follow-ups for the next revision are in one
place, including three product questions raised in commit messages along the
way and the acceptance criteria that turned out wrong, for calibration.

One item in the whole plan is knowingly open: S13 (seed_demo sign-in),
carried with a reason, and F6's last number awaits a product answer.

Wave 9 exit criteria: seven of seven, ticked with their verifying probes.

Items: all

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

docs/waves/wave-9.md

@@ -307,10 +307,10 @@ criteria turned out wrong, inputs still outstanding, and follow-ups logged along
 
 ## Wave 9 exit criteria
 
-- [ ] the export matches the final structure
-- [ ] one icon system, one sample-data affordance
-- [ ] accessibility metrics hit target or are documented
-- [ ] the primary flow works at 390px
-- [ ] archived projects are readable by project admins and invisible to everyone else (`D7`)
-- [ ] the backlog has no entry still pointing at wave 9
-- [ ] every item is reconciled - all 65
+- [x] the export matches the final structure (`export_check.py`, 20 checks — required fields present, CR-002 removals absent, CR-006 suppression honoured, tablet-legible)
+- [x] one icon system, one sample-data affordance (`icon_check.py`, `sample_check.py`)
+- [x] accessibility metrics hit target or are documented (`docs/reference/accessibility-audit.md`; the one gap — 21 dialogs on surfaces no S1 task named — is BL-024)
+- [x] the primary flow works at 390px (`mobile_check.py`, 24 checks, all seven pages; screenshots committed)
+- [x] archived projects are readable by project admins and invisible to everyone else (`archived_check.py`, 15 checks)
+- [x] the backlog has no entry still pointing at wave 9 (nine closed at T9.9, each with its measurement)
+- [x] every item is reconciled — all 65 (`docs/reference/completion.md`)