added client RA bill wise download report

app/templates/report.html

@@ -0,0 +1,40 @@
+{% extends "base.html" %}
+
+{% block content %}
+<div class="container mt-4">
+    <h2 class="mb-4">Generate Subcontractor Report</h2>
+
+    {% with messages = get_flashed_messages(with_categories=true) %}
+        {% if messages %}
+            {% for category, message in messages %}
+                <div class="alert alert-{{ category }} alert-dismissible fade show" role="alert">
+                    {{ message }}
+                    <button type="button" class="btn-close" data-bs-dismiss="alert"></button>
+                </div>
+            )
+            {% endfor %}
+        {% endif %}
+    {% endwith %}
+
+    <div class="card p-4 shadow-sm">
+        <form method="POST">
+            <div class="mb-3">
+                <label class="form-label fw-semibold">Select Subcontractor</label>
+                <select name="subcontractor_id" class="form-select" required>
+                    <option value="">-- Select Subcontractor --</option>
+                    {% for sc in subcontractors %}
+                    <option value="{{ sc.id }}">{{ sc.subcontractor_name }}</option>
+                    {% endfor %}
+                </select>
+            </div>
+
+            <div class="mb-3">
+                <label class="form-label fw-semibold">RA Bill Number</label>
+                <input type="text" name="ra_bill_no" class="form-control" placeholder="e.g. 01" required>
+            </div>
+
+            <button type="submit" class="btn btn-primary w-100">Generate Excel Report</button>
+        </form>
+    </div>
+</div>
+{% endblock %}