feat: add admin panel with project and tag management

- Full CRUD interface for projects with GitHub integration and tagging
- Real-time event log with expandable metadata viewer
- Reusable component library (Badge, Button, Input, Modal, Table,
TagPicker)
- Server-side API client with Unix socket and HTTP support
- JWT-based authentication with Svelte 5 reactive stores
- Settings management for social links and site identity
- Remove /admin path from tarpit to allow legitimate access

web/src/lib/components/admin/Modal.svelte

@@ -0,0 +1,84 @@
+<script lang="ts">
+  import { cn } from "$lib/utils";
+  import Button from "./Button.svelte";
+
+  interface Props {
+    open: boolean;
+    title?: string;
+    description?: string;
+    confirmText?: string;
+    cancelText?: string;
+    confirmVariant?: "primary" | "danger";
+    onconfirm?: () => void;
+    oncancel?: () => void;
+    children?: import("svelte").Snippet;
+  }
+
+  let {
+    open = $bindable(false),
+    title = "Confirm",
+    description,
+    confirmText = "Confirm",
+    cancelText = "Cancel",
+    confirmVariant = "primary",
+    onconfirm,
+    oncancel,
+    children,
+  }: Props = $props();
+
+  function handleCancel() {
+    open = false;
+    oncancel?.();
+  }
+
+  function handleConfirm() {
+    open = false;
+    onconfirm?.();
+  }
+
+  function handleBackdropClick(e: MouseEvent) {
+    if (e.target === e.currentTarget) {
+      handleCancel();
+    }
+  }
+</script>
+
+{#if open}
+  <div
+    class="fixed inset-0 z-50 flex items-center justify-center bg-black/60 backdrop-blur-sm p-4"
+    onclick={handleBackdropClick}
+    role="dialog"
+    aria-modal="true"
+  >
+    <div
+      class="relative w-full max-w-md rounded-xl bg-zinc-900 border border-zinc-800 p-8 shadow-xl shadow-black/50"
+    >
+      {#if title}
+        <h2 class="text-lg font-semibold text-zinc-50 mb-2">
+          {title}
+        </h2>
+      {/if}
+
+      {#if description}
+        <p class="text-sm text-zinc-400 mb-4">
+          {description}
+        </p>
+      {/if}
+
+      {#if children}
+        <div class="mb-4">
+          {@render children()}
+        </div>
+      {/if}
+
+      <div class="flex justify-end gap-3">
+        <Button variant="secondary" onclick={handleCancel}>
+          {cancelText}
+        </Button>
+        <Button variant={confirmVariant} onclick={handleConfirm}>
+          {confirmText}
+        </Button>
+      </div>
+    </div>
+  </div>
+{/if}