Add full app source

Adds the Flutter inventory app source, cleaned up for a shared repo:
generic package name, no hardcoded ERP endpoints (moved to gitignored
local config), no dead auth code, no debug logging of session data.

lib/models/profile.dart

@@ -0,0 +1,52 @@
+class Profile {
+  String? validId;
+  String? glpiCurrenttime;
+  int? glpiUseMode;
+  int? glpiID;
+  String? glpiisIdsVisible;
+  String? glpifriendlyname;
+  String? glpiname;
+  String? glpirealname;
+  String? glpifirstname;
+  int? glpidefaultEntity;
+
+  Profile(
+      {this.validId,
+        this.glpiCurrenttime,
+        this.glpiUseMode,
+        this.glpiID,
+        this.glpiisIdsVisible,
+        this.glpifriendlyname,
+        this.glpiname,
+        this.glpirealname,
+        this.glpifirstname,
+        this.glpidefaultEntity});
+
+  Profile.fromJson(Map<String, dynamic> json) {
+    validId = json['valid_id'];
+    glpiCurrenttime = json['glpi_currenttime'];
+    glpiUseMode = json['glpi_use_mode'];
+    glpiID = json['glpiID'];
+    glpiisIdsVisible = json['glpiis_ids_visible'];
+    glpifriendlyname = json['glpifriendlyname'];
+    glpiname = json['glpiname'];
+    glpirealname = json['glpirealname'];
+    glpifirstname = json['glpifirstname'];
+    glpidefaultEntity = json['glpidefault_entity'];
+  }
+
+  Map<String, dynamic> toJson() {
+    final Map<String, dynamic> data = <String, dynamic>{};
+    data['valid_id'] = validId;
+    data['glpi_currenttime'] = glpiCurrenttime;
+    data['glpi_use_mode'] = glpiUseMode;
+    data['glpiID'] = glpiID;
+    data['glpiis_ids_visible'] = glpiisIdsVisible;
+    data['glpifriendlyname'] = glpifriendlyname;
+    data['glpiname'] = glpiname;
+    data['glpirealname'] = glpirealname;
+    data['glpifirstname'] = glpifirstname;
+    data['glpidefault_entity'] = glpidefaultEntity;
+    return data;
+  }
+}