Trying this...

src/pages/dashboard/invoices/[id]/edit.astro

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+---
+import DashboardLayout from '../../../../layouts/DashboardLayout.astro';
+import { Icon } from 'astro-icon/components';
+import { db } from '../../../../db';
+import { invoices, members } from '../../../../db/schema';
+import { eq, and } from 'drizzle-orm';
+
+const { id } = Astro.params;
+const user = Astro.locals.user;
+
+if (!user || !id) {
+  return Astro.redirect('/dashboard/invoices');
+}
+
+// Fetch invoice
+const invoice = await db.select()
+  .from(invoices)
+  .where(eq(invoices.id, id))
+  .get();
+
+if (!invoice) {
+  return Astro.redirect('/404');
+}
+
+// Verify membership
+const membership = await db.select()
+  .from(members)
+  .where(and(
+    eq(members.userId, user.id),
+    eq(members.organizationId, invoice.organizationId)
+  ))
+  .get();
+
+if (!membership) {
+  return Astro.redirect('/dashboard');
+}
+
+// Format dates for input[type="date"]
+const issueDateStr = invoice.issueDate.toISOString().split('T')[0];
+const dueDateStr = invoice.dueDate.toISOString().split('T')[0];
+---
+
+<DashboardLayout title={`Edit ${invoice.number} - Chronus`}>
+  <div class="max-w-3xl mx-auto">
+    <div class="mb-6">
+      <a href={`/dashboard/invoices/${invoice.id}`} class="btn btn-ghost btn-sm gap-2 pl-0 hover:bg-transparent text-base-content/60">
+        <Icon name="heroicons:arrow-left" class="w-4 h-4" />
+        Back to Invoice
+      </a>
+      <h1 class="text-3xl font-bold mt-2">Edit Details</h1>
+    </div>
+
+    <form method="POST" action={`/api/invoices/${invoice.id}/update`} class="card bg-base-100 shadow-xl border border-base-200">
+      <div class="card-body gap-6">
+
+        <div class="grid grid-cols-1 md:grid-cols-2 gap-6">
+          <!-- Number -->
+          <div class="form-control">
+            <label class="label">
+              <span class="label-text font-semibold">Number</span>
+            </label>
+            <input
+              type="text"
+              name="number"
+              class="input input-bordered font-mono"
+              value={invoice.number}
+              required
+            />
+          </div>
+
+          <!-- Currency -->
+           <div class="form-control">
+            <label class="label">
+              <span class="label-text font-semibold">Currency</span>
+            </label>
+            <select name="currency" class="select select-bordered w-full">
+              <option value="USD" selected={invoice.currency === 'USD'}>USD ($)</option>
+              <option value="EUR" selected={invoice.currency === 'EUR'}>EUR (€)</option>
+              <option value="GBP" selected={invoice.currency === 'GBP'}>GBP (£)</option>
+              <option value="CAD" selected={invoice.currency === 'CAD'}>CAD ($)</option>
+              <option value="AUD" selected={invoice.currency === 'AUD'}>AUD ($)</option>
+            </select>
+          </div>
+
+          <!-- Issue Date -->
+          <div class="form-control">
+            <label class="label">
+              <span class="label-text font-semibold">Issue Date</span>
+            </label>
+            <input
+              type="date"
+              name="issueDate"
+              class="input input-bordered"
+              value={issueDateStr}
+              required
+            />
+          </div>
+
+          <!-- Due Date -->
+          <div class="form-control">
+            <label class="label">
+              <span class="label-text font-semibold">Due Date</span>
+            </label>
+            <input
+              type="date"
+              name="dueDate"
+              class="input input-bordered"
+              value={dueDateStr}
+              required
+            />
+          </div>
+
+           <!-- Tax Rate -->
+          <div class="form-control">
+            <label class="label">
+              <span class="label-text font-semibold">Tax Rate (%)</span>
+            </label>
+            <input
+              type="number"
+              name="taxRate"
+              step="0.01"
+              min="0"
+              max="100"
+              class="input input-bordered"
+              value={invoice.taxRate}
+            />
+          </div>
+        </div>
+
+        <!-- Notes -->
+        <div class="form-control">
+          <label class="label">
+            <span class="label-text font-semibold">Notes / Terms</span>
+          </label>
+          <textarea
+            name="notes"
+            class="textarea textarea-bordered h-32 font-mono text-sm"
+            placeholder="Payment terms, bank details, or thank you notes..."
+          >{invoice.notes}</textarea>
+        </div>
+
+        <div class="divider"></div>
+
+        <div class="card-actions justify-end">
+          <a href={`/dashboard/invoices/${invoice.id}`} class="btn btn-ghost">Cancel</a>
+          <button type="submit" class="btn btn-primary">
+            Save Changes
+          </button>
+        </div>
+      </div>
+    </form>
+  </div>
+</DashboardLayout>