feat: add startup-business-analyst plugin

Comprehensive startup analysis plugin with market sizing, financial modeling, team planning, and strategic research for early-stage companies.

- 5 skills: market sizing, financial modeling, team planning, competitive analysis, metrics
- 3 commands: market-opportunity, financial-projections, business-case
- 1 agent: startup-analyst
- Covers TAM/SAM/SOM, unit economics, competitive landscape, hiring plans

.claude-plugin/marketplace.json

@@ -1560,6 +1560,45 @@
         "./skills/data-storytelling"
       ]
     },
+    {
+      "name": "startup-business-analyst",
+      "source": "./plugins/startup-business-analyst",
+      "description": "Comprehensive startup business analysis with market sizing (TAM/SAM/SOM), financial modeling, team planning, and strategic research for early-stage companies",
+      "version": "1.0.0",
+      "author": {
+        "name": "Seth Hobson",
+        "url": "https://github.com/wshobson"
+      },
+      "homepage": "https://github.com/wshobson/agents",
+      "repository": "https://github.com/wshobson/agents",
+      "license": "MIT",
+      "keywords": [
+        "startup",
+        "business-analysis",
+        "market-sizing",
+        "tam-sam-som",
+        "financial-modeling",
+        "business-planning",
+        "fundraising"
+      ],
+      "category": "business",
+      "strict": false,
+      "commands": [
+        "./commands/market-opportunity.md",
+        "./commands/financial-projections.md",
+        "./commands/business-case.md"
+      ],
+      "agents": [
+        "./agents/startup-analyst.md"
+      ],
+      "skills": [
+        "./skills/market-sizing-analysis",
+        "./skills/startup-financial-modeling",
+        "./skills/team-composition-analysis",
+        "./skills/competitive-landscape",
+        "./skills/startup-metrics-framework"
+      ]
+    },
     {
       "name": "hr-legal-compliance",
       "source": "./plugins/hr-legal-compliance",