Skip agent-tooling dirs in service detection

The project-tree service scan walked .agents/ and .claude/, which vendor
example skill code that references services the project doesn't use. The
mcp-builder skill ships an evaluation.py with "from anthropic import
Anthropic", which tripped the Anthropic detector on plain Next.js apps.

Add .agents and .claude to skipDirs, matching the existing handling of
node_modules, vendor, and bundled WordPress plugins.

Author: phillips-jon

internal/config/detect.go

@@ -993,6 +993,12 @@ func detectAnalyticsScripts(rootDir string, services map[string]bool) {
 		"public":       true, // Common public web root
 		"wp-admin":     true, // WordPress core
 		"wp-includes":  true, // WordPress core
+		// Agent tooling vendors example skills/scripts that reference services
+		// the project doesn't actually use (e.g. the mcp-builder skill ships an
+		// evaluation.py with "from anthropic import Anthropic"). Skip them like
+		// other bundled third-party code to avoid false positives.
+		".agents": true, // vendored agent skills (Claude Code, Cursor, etc.)
+		".claude": true, // Claude Code project config and skills
 	}
 
 	// Collect external script URLs to fetch