[MG_Backend, tools] (P7): every WireDeclines.def row has a site and every site a warning-or-error line, and a tree-only audit fails the job when one does not

The B3 review (ID-P7-34) counted 12 of the 52 rows with no site at all -
TexViewFormat, TexNoApplierRecord, TexRecordDeadOrStale and the nine Shape*
rows were declared and never counted - and ten sites that counted with no (MGLOG_D included)
line, so "a name, a tally and a decline line" did not describe the tree.

- SyncWireTextureShape: all nine Shape* exits now count; the ViewOf exit
  and the preserve-flush exit were bare `return false` and are now
  MGL_WIRE_DECLINE_AT; the image-flags exit logged only MGLOG_D, which a
  Release build compiles away, and is promoted likewise.
- The preserve-copy exit was the one Shape exit with no row: appended as
  ShapePreserveCopyFailed (rows are append-only), 53 rows.
- SyncTextureResourceByHandle / UploadPendingWireLevels: the count-only
  sites without a log of their own are promoted to MGL_WIRE_DECLINE_AT;
  the ones already under a W/E _ONCE line keep that line and gain the count.
- scripts/ci/wire_declines_audit.py: fails on a row with no site, a site
  naming no row, or a bare Count() with no MGLOG_W/E within 8 lines above
  it. WireDeclineTally.h (the macro's definition) is not a site. Wired into
  the job that runs the fatal census.

Audit before: 52 rows, 40 with sites, 10 unlogged under the W/E rule (rc 1). After: 53 rows,
53 with sites, 0 unlogged (rc 0). Forced red (ShapeNoVkFormat made true for
1x1 textures, reverted): Split.Fm.F1WireScenario.VertexIdSampler... fails on
pixels with ShapeNoVkFormat=2 / TexShapeSync=2 in the shutdown tally.

.github/workflows/test.yml

@@ -2146,6 +2146,11 @@ jobs:
       - name: Fatal census (S7)
         run: python3 scripts/ci/fatal_census.py
 
+      # The decline half of rule I (P7 B3): every WireDeclines.def row has a site, every site a
+      # warning-or-error line. Same shape as the census - tree-only, no build.
+      - name: Wire declines audit (B3)
+        run: python3 scripts/ci/wire_declines_audit.py
+
       - name: Load trace cases
         id: trace-cases
         run: |