Rename binary to agent-orchestrator, add splash screen, fix white flash

- Rename Cargo package from bterminal to agent-orchestrator so WM_CLASS
  matches desktop entry and taskbar groups correctly
- Update lib name (agent_orchestrator_lib) and telemetry service name
- Add Pandora's Box splash screen with progress steps during startup
- Prevent white window flash with inline CSS and Tauri backgroundColor

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

v2/src/lib/components/SplashScreen.svelte

@@ -0,0 +1,138 @@
+<script lang="ts">
+  import splashImg from '../../assets/splash.jpg';
+
+  interface Props {
+    steps: { label: string; done: boolean }[];
+    version?: string;
+  }
+
+  let { steps, version = 'v3' }: Props = $props();
+
+  let doneCount = $derived(steps.filter(s => s.done).length);
+  let progress = $derived(steps.length > 0 ? doneCount / steps.length : 0);
+  let currentStep = $derived(steps.find(s => !s.done)?.label ?? 'Ready');
+</script>
+
+<div class="splash">
+  <img src={splashImg} alt="" class="splash-bg" />
+  <div class="splash-overlay"></div>
+
+  <div class="splash-content">
+    <div class="splash-title">
+      <h1>Agent Orchestrator</h1>
+      <span class="splash-version">{version}</span>
+      <span class="splash-codename">Pandora's Box</span>
+    </div>
+
+    <div class="splash-progress">
+      <div class="progress-bar">
+        <div class="progress-fill" style:width="{progress * 100}%"></div>
+      </div>
+      <div class="progress-label">{currentStep}</div>
+    </div>
+  </div>
+</div>
+
+<style>
+  .splash {
+    position: fixed;
+    inset: 0;
+    display: flex;
+    align-items: center;
+    justify-content: center;
+    background: #1e1e2e;
+    z-index: 9999;
+  }
+
+  .splash-bg {
+    position: absolute;
+    inset: 0;
+    width: 100%;
+    height: 100%;
+    object-fit: cover;
+    opacity: 0.4;
+    filter: blur(2px);
+  }
+
+  .splash-overlay {
+    position: absolute;
+    inset: 0;
+    background: linear-gradient(
+      180deg,
+      rgba(30, 30, 46, 0.3) 0%,
+      rgba(30, 30, 46, 0.6) 50%,
+      rgba(30, 30, 46, 0.95) 100%
+    );
+  }
+
+  .splash-content {
+    position: relative;
+    z-index: 1;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 2rem;
+    width: min(480px, 90vw);
+  }
+
+  .splash-title {
+    text-align: center;
+    display: flex;
+    flex-direction: column;
+    align-items: center;
+    gap: 0.25rem;
+  }
+
+  .splash-title h1 {
+    font-size: 1.8rem;
+    font-weight: 700;
+    color: #cdd6f4;
+    margin: 0;
+    letter-spacing: 0.02em;
+    text-shadow: 0 2px 12px rgba(203, 166, 247, 0.3);
+  }
+
+  .splash-version {
+    font-size: 0.75rem;
+    color: #a6adc8;
+    font-weight: 500;
+    letter-spacing: 0.1em;
+    text-transform: uppercase;
+  }
+
+  .splash-codename {
+    font-size: 0.7rem;
+    color: #cba6f7;
+    font-style: italic;
+    opacity: 0.8;
+  }
+
+  .splash-progress {
+    width: 100%;
+    display: flex;
+    flex-direction: column;
+    gap: 0.5rem;
+  }
+
+  .progress-bar {
+    width: 100%;
+    height: 3px;
+    background: rgba(108, 112, 134, 0.3);
+    border-radius: 2px;
+    overflow: hidden;
+  }
+
+  .progress-fill {
+    height: 100%;
+    background: linear-gradient(90deg, #cba6f7, #89b4fa);
+    border-radius: 2px;
+    transition: width 0.3s ease;
+  }
+
+  .progress-label {
+    font-size: 0.7rem;
+    color: #6c7086;
+    text-align: center;
+    min-height: 1em;
+  }
+</style>