fix(scripts): MCP server mapping and CLAUDE.md section markers

Issue 1 - MCP Server Mapping:
- Add mcp_servers field to plugin.json for plugins using shared MCP servers
- projman/pr-review now install gitea MCP server
- cmdb-assistant now installs netbox MCP server
- Scripts read MCP server names from plugin.json

Issue 2 - CLAUDE.md Section Markers:
- Install wraps content with HTML comment markers for precise removal
- Uninstall uses markers first, falls back to legacy header detection
- Fixes code block false positives during uninstall

Bug fix:
- Change ((servers_added++)) to ((++servers_added)) to avoid exit code 1
  with set -e when incrementing from 0

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

plugins/cmdb-assistant/.claude-plugin/plugin.json

@@ -19,5 +19,6 @@
     "data-quality",
     "validation"
   ],
+  "mcp_servers": ["netbox"],
   "commands": ["./commands/"]
 }

plugins/contract-validator/.claude-plugin/plugin.json

@@ -17,5 +17,6 @@
     "interfaces",
     "cross-plugin"
   ],
+  "mcp_servers": ["contract-validator"],
   "commands": ["./commands/"]
 }

plugins/data-platform/.claude-plugin/plugin.json

@@ -18,5 +18,6 @@
     "etl",
     "dataframe"
   ],
+  "mcp_servers": ["data-platform"],
   "commands": ["./commands/"]
 }

plugins/pr-review/.claude-plugin/plugin.json

@@ -16,5 +16,6 @@
     "performance",
     "multi-agent"
   ],
+  "mcp_servers": ["gitea"],
   "commands": ["./commands/"]
 }

plugins/projman/.claude-plugin/plugin.json

@@ -16,5 +16,6 @@
     "agile",
     "lessons-learned"
   ],
+  "mcp_servers": ["gitea"],
   "commands": ["./commands/"]
 }

plugins/viz-platform/.claude-plugin/plugin.json

@@ -19,5 +19,6 @@
     "visualization",
     "dmc"
   ],
+  "mcp_servers": ["viz-platform"],
   "commands": ["./commands/"]
 }