fix(web/ui): correct project card layout and unify config section actions

- Fix .project-card flex direction so expanded repos align left
- Add .config-section-actions for consistent save bars
- Replace sticky footer in Config Profiles with config-section-actions
- Replace dialog-actions in Tool Type editor with config-section-actions
- Convert manifest editor preview block to .config-section

apps/web/src/styles/global.css

@@ -378,9 +378,9 @@
 
 .project-card {
 	display: flex;
-	justify-content: space-between;
-	align-items: flex-start;
-	gap: 1rem;
+	flex-direction: column;
+	align-items: stretch;
+	gap: 0;
 }
 
 .project-info h3 {
@@ -635,6 +635,16 @@
 	margin-bottom: 0;
 }
 
+.config-section-actions {
+	display: flex;
+	align-items: center;
+	justify-content: flex-start;
+	gap: var(--space-3);
+	margin-top: var(--space-2);
+	padding-top: var(--space-3);
+	border-top: 1px solid var(--border);
+}
+
 /* Legacy alias for existing consumers */
 .form-section {
 	padding: var(--space-4);