06/15 Phase 1 + 2 codes

app/blueprints/main/routes.py

@@ -0,0 +1,14 @@
+"""Main blueprint: landing page and health check."""
+from flask import Blueprint, render_template, jsonify
+
+main_bp = Blueprint("main", __name__)
+
+
+@main_bp.route("/")
+def index():
+    return render_template("index.html")
+
+
+@main_bp.route("/healthz")
+def healthz():
+    return jsonify(status="ok")