Add FootprintIQ to Username Search Engines (THE-214)

Resolves merge conflict from PR #639 by applying the community-contributed
FootprintIQ tool addition against current master with enrichment fields.
FootprintIQ scans usernames/emails/phones across 500+ platforms with
breach detection and data broker scanning.

Co-Authored-By: TheCandyMan-apps <TheCandyMan-apps@users.noreply.github.com>
Co-Authored-By: Paperclip <noreply@paperclip.ing>

public/arf.json

@@ -150,6 +150,26 @@
               "invitationOnly": false,
               "deprecated": false
             },
+            {
+              "name": "FootprintIQ",
+              "type": "url",
+              "url": "https://footprintiq.app",
+              "description": "Ethical digital footprint scanner that searches usernames, emails, and phone numbers across 500+ platforms. Includes breach detection, data broker scanning, and confidence scoring to reduce false positives.",
+              "status": "live",
+              "pricing": "freemium",
+              "bestFor": "Username and email footprint scanning with breach and data broker exposure checks",
+              "input": "Username, email address, or phone number",
+              "output": "Matched profiles across 500+ platforms, breach exposure, data broker listings",
+              "opsec": "active",
+              "opsecNote": "Queries are routed through FootprintIQ infrastructure; target platforms may log lookup activity.",
+              "localInstall": false,
+              "googleDork": false,
+              "registration": false,
+              "editUrl": false,
+              "api": false,
+              "invitationOnly": false,
+              "deprecated": false
+            },
             {
               "name": "GitFive (T)",
               "type": "url",