F6 - strict 2.0: the creator fits two screens at rest (closes BL-022)

Nick's answer: 'strict 2.0'. The 154px overage was chrome, and every trim
densifies rather than deletes - A2's one-warning banner and the SOP identity
strip both stay:
- collapsed section rows 46 -> 36px on fine pointers (13 rows at rest was
  ~130px of the overage); coarse pointers keep the 44px tablet row (C1)
- ctx-bar 12 -> 7px padding; banner margin 14 -> 8, padding 11 -> 8
- .main top pad 22 -> 14 (bottom stays clear of the sticky bar)
- nav-row 24/24 -> 14/14

Measured at 1440x900: 1,954 -> 1,784px = 1.98 screens. form_structure_check
is 51/51 for the first time - the check never moved, the page now fits it.
mobile_check 24/24 (the coarse-pointer targets held).

Items: F6, BL-022 (closed), C1 preserved.

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

docs/waves/backlog.md

@@ -491,7 +491,7 @@ deliberately deferred.
 - **Suggested wave or follow-up:** wave 9 backlog sweep (`T9.9`), verified with
   the `tests/qa_gate_check.py` sink pattern.
 
-### BL-022 — DECIDED 2026-08-20 (strict 2.0; chrome compressed, closed by the F6 task on feat/wp-suite-r3-housekeeping)
+### BL-022 — CLOSED 2026-08-20 (strict 2.0; the chrome compressed to 1,784px = 1.98 screens; form_structure_check 51/51 for the first time)
 
 - **Found during:** T7.2, re-measured at the wave 7 exit
 - **Where:** `html/wp-creation-index.html` page chrome; `tests/form_structure_check.py`