refactor: break up app.js into smaller modules

Split static/js/app.js (581 lines) into 5 focused modules:
- utils.js: global utilities store + legacy compat
- components.js: reusable Alpine.js components (copy, confirm, dismiss, time)
- app-detail.js: app detail page logic (status polling, logs)
- deployment.js: deployment card + deployments history page
- dashboard.js: dashboard relative time updates

Closes #128

static/js/components.js

@@ -0,0 +1,71 @@
+/**
+ * upaas - Reusable Alpine.js Components
+ *
+ * Small, self-contained components: copy button, confirm dialog,
+ * auto-dismiss alerts, and relative time display.
+ */
+
+document.addEventListener("alpine:init", () => {
+  // ============================================
+  // Copy Button Component
+  // ============================================
+  Alpine.data("copyButton", (targetId) => ({
+    copied: false,
+    async copy() {
+      const target = document.getElementById(targetId);
+      if (!target) return;
+      const text = target.textContent || target.value;
+      const success = await Alpine.store("utils").copyToClipboard(text);
+      if (success) {
+        this.copied = true;
+        setTimeout(() => {
+          this.copied = false;
+        }, 2000);
+      }
+    },
+  }));
+
+  // ============================================
+  // Confirm Action Component
+  // ============================================
+  Alpine.data("confirmAction", (message) => ({
+    confirm(event) {
+      if (!window.confirm(message)) {
+        event.preventDefault();
+      }
+    },
+  }));
+
+  // ============================================
+  // Auto-dismiss Alert Component
+  // ============================================
+  Alpine.data("autoDismiss", (delay = 5000) => ({
+    show: true,
+    init() {
+      setTimeout(() => {
+        this.dismiss();
+      }, delay);
+    },
+    dismiss() {
+      this.show = false;
+      setTimeout(() => {
+        this.$el.remove();
+      }, 300);
+    },
+  }));
+
+  // ============================================
+  // Relative Time Component
+  // ============================================
+  Alpine.data("relativeTime", (isoTime) => ({
+    display: "",
+    init() {
+      this.update();
+      // Update every minute
+      setInterval(() => this.update(), 60000);
+    },
+    update() {
+      this.display = Alpine.store("utils").formatRelativeTime(isoTime);
+    },
+  }));
+});