fix(ci): repair two workflow startup_failures (invalid YAML indentation)

Two workflows in .github/workflows/ were YAML-invalid, so GitHub failed to
compile them on every push to main (startup_failure, 0 jobs) — GitHub compiles
all workflow files on push, so even the workflow_call-only changelog-reusable
produced a failed push run.

- boj-build.yml: two trailing steps (K9-SVC Validation, Contractile Check) had
  dropped to 2-space indentation, out of the 'steps:' list — re-indented to 6
  spaces so they are valid steps under trigger-boj. (Addresses standards#331
  'repair or retire boj-build.yml' on the repair side.) The job stays gated on
  'if: vars.BOJ_SERVER_URL != ...', so it skips cleanly when unconfigured.
- changelog-reusable.yml: two multi-line strings (a git commit message and a
  gh pr --body) had continuation lines at column 0, falling out of their
  'run: |' block scalars. Rewritten as multiple -m flags / a single-line body
  so the block scalar stays valid. Once valid, GitHub correctly treats the file
  as workflow_call-only and no longer spawns a failed push run.

Both validated locally with PyYAML; all 28 workflows now parse. No SPDX header
or licence content touched.

https://claude.ai/code/session_011xv3VLrqeXkpjXxUojKz82

Author: claude

.github/workflows/boj-build.yml

@@ -47,31 +47,31 @@ jobs:
             --data "$payload" \
             || echo "BoJ server unreachable - skipping (non-fatal)"
 
-  - name: K9-SVC Validation
-    run: |
-      echo "Running K9-SVC contractile validation..."
-      if [ -f .machine_readable/contractiles/must/Mustfile.a2ml ]; then
-        echo "✅ Mustfile found - running validation"
-        # Placeholder for actual K9 validation
-        echo "K9 validation would run here"
-      else
-        echo "❌ Mustfile not found"
-        exit 1
-      fi
-      
-  - name: Contractile Check
-    run: |
-      echo "Checking contractile completeness..."
-      contractiles=("must" "trust" "dust" "lust" "adjust" "intend")
-      missing=0
-      for c in "${contractiles[@]}"; do
-        if [ ! -f ".machine_readable/contractiles/$c/${c^}file.a2ml" ]; then
-          echo "❌ Missing: $c"
-          missing=$((missing + 1))
-        fi
-      done
-      if [ $missing -gt 0 ]; then
-        echo "❌ $missing contractiles missing"
-        exit 1
-      fi
-      echo "✅ All contractiles present"
+      - name: K9-SVC Validation
+        run: |
+          echo "Running K9-SVC contractile validation..."
+          if [ -f .machine_readable/contractiles/must/Mustfile.a2ml ]; then
+            echo "✅ Mustfile found - running validation"
+            # Placeholder for actual K9 validation
+            echo "K9 validation would run here"
+          else
+            echo "❌ Mustfile not found"
+            exit 1
+          fi
+          
+      - name: Contractile Check
+        run: |
+          echo "Checking contractile completeness..."
+          contractiles=("must" "trust" "dust" "lust" "adjust" "intend")
+          missing=0
+          for c in "${contractiles[@]}"; do
+            if [ ! -f ".machine_readable/contractiles/$c/${c^}file.a2ml" ]; then
+              echo "❌ Missing: $c"
+              missing=$((missing + 1))
+            fi
+          done
+          if [ $missing -gt 0 ]; then
+            echo "❌ $missing contractiles missing"
+            exit 1
+          fi
+          echo "✅ All contractiles present"

.github/workflows/changelog-reusable.yml

@@ -145,12 +145,10 @@ jobs:
             echo "Nothing to commit after move (race condition)."
             exit 0
           fi
-          git commit -m "chore(changelog): regenerate from conventional commits
-
-Auto-generated by hyperpolymath/standards changelog-reusable.yml.
-See standards/templates/cliff.toml for the canonical config.
-
-Closes part of the 2026-05-26 CHANGELOG gap (standards#197 audit)."
+          git commit \
+            -m "chore(changelog): regenerate from conventional commits" \
+            -m "Auto-generated by hyperpolymath/standards changelog-reusable.yml. See standards/templates/cliff.toml for the canonical config." \
+            -m "Closes part of the 2026-05-26 CHANGELOG gap (standards#197 audit)."
           git push origin HEAD:${{ github.ref_name }}
 
       - name: Mode = pr-back — open PR with regenerated CHANGELOG.md
@@ -174,9 +172,7 @@ Closes part of the 2026-05-26 CHANGELOG gap (standards#197 audit)."
           git push -u origin "$branch"
           gh pr create \
             --title "chore(changelog): regenerate from conventional commits" \
-            --body "Auto-generated by hyperpolymath/standards changelog-reusable.yml.
-
-Closes part of the 2026-05-26 CHANGELOG gap (standards#197 audit)." \
+            --body "Auto-generated by hyperpolymath/standards changelog-reusable.yml. Closes part of the 2026-05-26 CHANGELOG gap (standards#197 audit)." \
             --base "${{ github.ref_name }}" \
             --head "$branch"