feat: Vestige v2.0.0 "Cognitive Leap" — 3D dashboard, HyDE search, WebSocket events

The biggest release in Vestige history. Complete visual and cognitive overhaul.

Dashboard:
- SvelteKit 2 + Three.js 3D neural visualization at localhost:3927/dashboard
- 7 interactive pages: Graph, Memories, Timeline, Feed, Explore, Intentions, Stats
- WebSocket event bus with 16 event types, real-time 3D animations
- Bloom post-processing, GPU instanced rendering, force-directed layout
- Dream visualization mode, FSRS retention curves, command palette (Cmd+K)
- Keyboard shortcuts, responsive mobile layout, PWA installable
- Single binary deployment via include_dir! (22MB)

Engine:
- HyDE query expansion (intent classification + 3-5 semantic variants + centroid)
- fastembed 5.11 with optional Nomic v2 MoE + Qwen3 reranker + Metal GPU
- Emotional memory module (#29)
- Criterion benchmark suite

Backend:
- Axum WebSocket at /ws with heartbeat + event broadcast
- 7 new REST endpoints for cognitive operations
- Event emission from MCP tools via shared broadcast channel
- CORS for SvelteKit dev mode

Distribution:
- GitHub issue templates (bug report, feature request)
- CHANGELOG with comprehensive v2.0 release notes
- README updated with dashboard docs, architecture diagram, comparison table

734 tests passing, zero warnings, 22MB release binary.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

apps/dashboard/.svelte-kit/output/server/entries/fallbacks/error.svelte.js

@@ -0,0 +1,44 @@
+import { g as getContext, c as escape_html } from "../../chunks/index.js";
+import "../../chunks/state.svelte.js";
+import "@sveltejs/kit/internal";
+import "../../chunks/exports.js";
+import "../../chunks/utils2.js";
+import { w as writable } from "../../chunks/index2.js";
+import "@sveltejs/kit/internal/server";
+import "../../chunks/root.js";
+function create_updated_store() {
+  const { set, subscribe } = writable(false);
+  {
+    return {
+      subscribe,
+      // eslint-disable-next-line @typescript-eslint/require-await
+      check: async () => false
+    };
+  }
+}
+const stores = {
+  updated: /* @__PURE__ */ create_updated_store()
+};
+({
+  check: stores.updated.check
+});
+function context() {
+  return getContext("__request__");
+}
+const page$1 = {
+  get error() {
+    return context().page.error;
+  },
+  get status() {
+    return context().page.status;
+  }
+};
+const page = page$1;
+function Error$1($$renderer, $$props) {
+  $$renderer.component(($$renderer2) => {
+    $$renderer2.push(`<h1>${escape_html(page.status)}</h1> <p>${escape_html(page.error?.message)}</p>`);
+  });
+}
+export {
+  Error$1 as default
+};