Fix CI citation-spine bash bug + add missing spine elements

((SCORE++)) returns exit code 1 when SCORE goes 0→1 under bash -e.
Replaced with SCORE=$((SCORE + 1)) which always returns 0.
Added Paul Desai, Active MirrorOS, N1 Intelligence to README footer.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: MirrorDNA-Reflection-Protocol

.github/workflows/ci.yml

@@ -116,7 +116,7 @@ jobs:
           for element in "${SPINE_ELEMENTS[@]}"; do
             if grep -qi "$element" README.md 2>/dev/null; then
               echo "✓ Found: $element"
-              ((SCORE++))
+              SCORE=$((SCORE + 1))
             else
               echo "✗ Missing: $element"
             fi

README.md

@@ -66,3 +66,7 @@ The local OS securely exposes read-only or authorized nodes to the internet via
 ---
 
 *This repository represents the meta-layer documentation of MirrorDNA. The actual infrastructure spans 120 separate repositories and 45 persistent background services. It is the groundwork for a future where personal AI is an operating system, not a subscription.*
+
+---
+
+Built by [Paul Desai](https://activemirror.ai) as part of the Active MirrorOS ecosystem — a product of N1 Intelligence.