feat: complete Phase 1 foundation hardening + three-mode UI design doc

Phase 1a — Gradient Removal:
- Replaced all gradient-button/gradient-card with glass-button/path-option-card
- Removed banned gradient CSS classes

Phase 1b — Security Hardening:
- SecretsManager: AES-256-GCM encryption (core/security)
- electrs_status: credentials from env vars instead of hardcoded
- port_manager: RwLock proper error handling (no unwrap)
- Pinned all 11 :latest manifest images to specific versions
- parmanode converter: pinned inferred image versions

Phase 1c — Code Quality:
- Split rpc.rs (1795 lines) into 6 handler modules (auth, node, container, package, peers)
- Removed sideload code (UI, store, RPC client, 3 doc files)
- Fixed body background flash on logout/refresh
- Replaced 30 TypeScript `any` types with proper types
- Deleted HelloWorld.vue, removed TODO comments
- Added set -euo pipefail to all shell scripts
- Made deploy script verbose with timestamps and elapsed time

Also adds:
- CLAUDE.md project guide
- docs/three-mode-ui-design.md — design spec for Easy/Pro/Chat UI modes
- OnlineStatusPill component

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

neode-ui/src/components/OnlineStatusPill.vue

@@ -0,0 +1,25 @@
+<template>
+  <button
+    type="button"
+    data-controller-ignore
+    class="flex items-center gap-1.5 px-3 py-2 rounded-lg text-white/80 hover:bg-white/10 hover:text-white transition-colors"
+    title="Open CLI (⌘C / Ctrl+C)"
+    @click="openCLI"
+  >
+    <div class="relative">
+      <div class="w-2 h-2 rounded-full bg-green-400"></div>
+      <div class="absolute inset-0 w-2 h-2 rounded-full bg-green-400 animate-ping opacity-50"></div>
+    </div>
+    <span class="text-xs">Online</span>
+  </button>
+</template>
+
+<script setup lang="ts">
+import { useCLIStore } from '@/stores/cli'
+
+const cliStore = useCLIStore()
+
+function openCLI() {
+  cliStore.open()
+}
+</script>