V47 Gate 10: Repair promotion workflow pre-promotion check targets

Fix a template double-substitution in v47-canon-promotion.yml: the V46
pre-promotion validation branch ran canon-posture-drift with --active-canon
V47 --draft-target V48 and canonical-inputs with --current-target V47 — the
post-promotion targets — so the workflow failed closed before promoting.
The pre-promotion branch now validates --active-canon V46 --draft-target V47
and --current-target V46; the post-promotion branch and promote step retain
their V47/V48 targets. Regenerate the promotion readiness artifact against
the repaired workflow digest.

Validated with:
- pnpm run check:v47-gate10 (includes readiness tests and the V47 promotion dry-run)
- pnpm run check:v47-promotion-readiness

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

Author: geraldarthurdavis

.bitcode/v47-promotion-readiness-report.json

@@ -237,7 +237,7 @@
     {
       "relativePath": ".github/workflows/v47-canon-promotion.yml",
       "present": true,
-      "digest": "sha256:80483ff5de209b36ce595bc3cfbeb3326330f3a3e878181fb20fa672b9e902fa",
+      "digest": "sha256:824531af8f8551d2f3877585c542c1f0daea73c367c769a6fd49c9589aa6f74b",
       "requiredTokens": [
         {
           "token": "head.ref == 'version/v47'",

.github/workflows/v47-canon-promotion.yml

@@ -75,8 +75,8 @@ jobs:
           POINTER="$(cat BITCODE_SPEC.txt)"
           if [ "$POINTER" = "V46" ]; then
             run_checked node scripts/check-bitcode-spec-family.mjs --version V47 --mode draft --current-target V46
-            run_checked node scripts/check-bitcode-canon-posture-drift.mjs --active-canon V47 --draft-target V48
-            run_checked node scripts/check-bitcode-canonical-inputs.mjs --current-target V47
+            run_checked node scripts/check-bitcode-canon-posture-drift.mjs --active-canon V46 --draft-target V47
+            run_checked node scripts/check-bitcode-canonical-inputs.mjs --current-target V46
             run_checked node scripts/check-v47-gate1-scope-measurement-launch-freeze.mjs --skip-branch-check
             run_checked node scripts/check-v47-gate2-feature-excess-alignment-audit.mjs --skip-branch-check --skip-uapi-tests
             run_checked node scripts/check-v47-gate3-seller-buyer-state-machine-law.mjs --skip-branch-check --skip-package-tests --skip-uapi-tests