fix(plugins): align with official Claude Code plugin conventions

- Add minimal .claude-plugin/plugin.json to conductor and startup-business-analyst
  (matches official format: name, description, author only)
- Remove .gitignore from startup-business-analyst (not in official plugins)
- Bump versions: conductor 1.0.5, startup-business-analyst 1.0.2

Plugin structure now matches official examples (feature-dev, ralph-loop, etc.)

plugins/startup-business-analyst/.claude-plugin/plugin.json

@@ -0,0 +1,8 @@
+{
+  "name": "startup-business-analyst",
+  "description": "Comprehensive startup business analysis with market sizing (TAM/SAM/SOM), financial modeling, team planning, and strategic research",
+  "author": {
+    "name": "Seth Hobson",
+    "email": "seth@major7apps.com"
+  }
+}

plugins/startup-business-analyst/.gitignore

@@ -1,17 +0,0 @@
-# Local configuration files
-.claude/*.local.md
-
-# OS files
-.DS_Store
-Thumbs.db
-
-# Editor files
-.vscode/
-.idea/
-*.swp
-*.swo
-*~
-
-# Temporary files
-*.tmp
-*.log