chore: bump memory-continuity to v2.4.0

Align skill version with repo release track. Changes since v2.3.0:
- feat: memory file count hard limit (500) with archive cap (20)
- feat: verify.sh two-layer install verification
- feat: rewrite gh-pr-release-flow into comprehensive GitHub iron rules
- docs: worker-orchestrator, dev reporting rules, anti-silent rules

skills/memory-continuity/_meta.json

@@ -0,0 +1,6 @@
+{
+  "ownerId": "github:dtzp555-max",
+  "slug": "memory-continuity",
+  "version": "2.4.0",
+  "publishedAt": 1710388800000
+}

skills/memory-continuity/skill.json

@@ -0,0 +1,13 @@
+{
+  "name": "memory-continuity",
+  "version": "2.4.0",
+  "description": "Short-term working continuity for OpenClaw agents. Preserves structured in-flight work state across gateway restarts, /new, reset, model fallback, and context compaction.",
+  "author": "dtzp555-max",
+  "license": "MIT",
+  "homepage": "https://github.com/dtzp555-max/memory-continuity",
+  "tags": ["memory", "continuity", "state", "recovery", "session"],
+  "compatibility": {
+    "agents": ["openclaw"],
+    "minVersion": "2026.1.0"
+  }
+}