Restore bio-research to marketplace.json (#165)

The bio-research entry was removed in 2d6f7e2 (PR #115) without a stated
reason, but the plugin directory was migrated and continues to be
maintained. This restores the original entry pending confirmation that
the removal was intentional.

Author: jasonm

.claude-plugin/marketplace.json

@@ -54,6 +54,11 @@
       "source": "./product-management",
       "description": "Write feature specs, plan roadmaps, and synthesize user research faster. Keep stakeholders updated and stay ahead of the competitive landscape."
     },
+    {
+      "name": "bio-research",
+      "source": "./bio-research",
+      "description": "Connect to preclinical research tools and databases (literature search, genomics analysis, target prioritization) to accelerate early-stage life sciences R&D"
+    },
     {
       "name": "slack-by-salesforce",
       "source": "./partner-built/slack",