fix(docker): fix TDZ crash, icon bundle bloat, rate-limit on static assets

- Fix "Cannot access 'a' before initialization" TDZ error after login
  caused by manualChunks splitting react-vendor + lucide icons into
  circular ES-module chunks. Removed manualChunks entirely.

- Replace `import * as icons from "lucide-react"` (pulls all ~1000 icons)
  with a targeted icon-map of ~50 icons actually used by tool definitions.
  Reduces shared icons chunk from 745KB to 62KB (132KB→16KB gzip).

- Exclude static files from @fastify/rate-limit via allowList so rapid
  page navigations don't 429 on JS/CSS chunk requests.

- Move Docker auth defaults (AUTH_ENABLED, DEFAULT_USERNAME,
  DEFAULT_PASSWORD) from Dockerfile ENV to entrypoint.sh runtime exports
  to avoid SecretsUsedInArgOrEnv warnings.

- Fix Docker CMD to use pnpm --filter for workspace-scoped tsx binary.

- Set COREPACK_HOME system-wide so non-root user can access pnpm cache.

- Lazy-load all pages in App.tsx and all controls in
  pipeline-step-settings.tsx to keep main bundle under 300KB.

apps/web/src/pages/fullscreen-grid-page.tsx

@@ -1,11 +1,11 @@
 import type { CategoryInfo, Tool } from "@ashim/shared";
 import { CATEGORIES, TOOLS } from "@ashim/shared";
-import * as icons from "lucide-react";
 import { Eye, EyeOff, FileImage, LayoutGrid, List, Search } from "lucide-react";
 import { useEffect, useMemo, useState } from "react";
 import { Link, useNavigate } from "react-router-dom";
 import { GemLogo } from "@/components/common/gem-logo";
 import { apiGet } from "@/lib/api";
+import { ICON_MAP } from "@/lib/icon-map";
 import { cn } from "@/lib/utils";
 
 export function FullscreenGridPage() {
@@ -57,8 +57,6 @@ export function FullscreenGridPage() {
 
   const activeCategories = CATEGORIES.filter((cat) => groupedTools.has(cat.id));
 
-  const iconsMap = icons as unknown as Record<string, React.ComponentType<{ className?: string }>>;
-
   return (
     <div className="min-h-screen bg-background text-foreground">
       {/* Top bar */}
@@ -130,7 +128,6 @@ export function FullscreenGridPage() {
                 category={category}
                 tools={groupedTools.get(category.id) || []}
                 showDetails={showDetails}
-                iconsMap={iconsMap}
               />
             ))}
           </div>
@@ -144,14 +141,13 @@ function CategoryCard({
   category,
   tools,
   showDetails,
-  iconsMap,
 }: {
   category: CategoryInfo;
   tools: Tool[];
   showDetails: boolean;
-  iconsMap: Record<string, React.ComponentType<{ className?: string }>>;
 }) {
-  const CategoryIcon = iconsMap[category.icon] || LayoutGrid;
+  const CategoryIcon =
+    (ICON_MAP[category.icon] as React.ComponentType<{ className?: string }>) ?? LayoutGrid;
 
   return (
     <div className="rounded-xl border border-border bg-card overflow-hidden shadow-sm hover:shadow-md transition-shadow">
@@ -183,7 +179,8 @@ function CategoryCard({
       {/* Tool list */}
       <div className="p-2">
         {tools.map((tool) => {
-          const ToolIcon = iconsMap[tool.icon] || FileImage;
+          const ToolIcon =
+            (ICON_MAP[tool.icon] as React.ComponentType<{ className?: string }>) ?? FileImage;
           return (
             <Link
               key={tool.id}