feat: finalize lease documents and IRL revisions

frontend/src/app/components/lease-finalization-form/lease-finalization-form.css

@@ -0,0 +1,49 @@
+:host {
+  display: block;
+  margin-top: 30px;
+  padding-top: 28px;
+  border-top: 1px solid var(--border);
+}
+fieldset {
+  display: grid;
+  gap: 14px;
+  padding: 0;
+  border: 0;
+}
+.section-heading p,
+.selected-file,
+.signature-notice {
+  color: var(--text-muted);
+}
+.file-action,
+.date-field {
+  display: grid;
+  gap: 6px;
+  font-weight: 700;
+}
+.date-field input {
+  max-width: 260px;
+  padding: 12px;
+  border: 1px solid var(--border);
+  border-radius: 8px;
+  background: var(--surface);
+  color: var(--text);
+  font: inherit;
+}
+.selected-file,
+.signature-notice,
+.operation-error {
+  margin: 0;
+  font-size: 0.82rem;
+}
+.warnings {
+  display: grid;
+  gap: 8px;
+  padding: 14px;
+  border-radius: 12px;
+  background: var(--surface-soft);
+}
+.warnings h3 {
+  margin: 0;
+  font-size: 0.9rem;
+}