remove the map and ui shim packages

Both failed the deletion test in the telling direction:

- @trails-cool/ui: Button/Input/Card had zero consumers — both apps
  roll their own elements inline. The only live part was a 6-line
  styles.css (the Tailwind entry + one keyframe), which now lives in
  each app as app/styles.css.
- @trails-cool/map: MapView and RouteLayer had zero consumers; the
  package was otherwise a re-export of two map-core constants, and the
  two import sites now use @trails-cool/map-core directly. The
  "map components go in @trails-cool/map" convention had drifted long
  ago — the real map components live in apps/planner/app/components.

CLAUDE.md's repository structure and conventions updated to match
reality (including pointing shared-type guidance at the post-#515
sources: db row types, api contracts, Waypoint in types). Dockerfiles
no longer COPY the deleted package manifests.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

packages/ui/src/Input.tsx

@@ -1,25 +0,0 @@
-import type { InputHTMLAttributes } from "react";
-
-export interface InputProps extends InputHTMLAttributes<HTMLInputElement> {
-  label?: string;
-  error?: string;
-}
-
-export function Input({ label, error, className = "", id, ...props }: InputProps) {
-  const inputId = id ?? label?.toLowerCase().replace(/\s+/g, "-");
-  return (
-    <div className="flex flex-col gap-1.5">
-      {label && (
-        <label htmlFor={inputId} className="text-sm font-medium text-gray-700">
-          {label}
-        </label>
-      )}
-      <input
-        id={inputId}
-        className={`rounded-md border border-gray-300 px-3 py-2 text-sm shadow-sm transition-colors focus:border-blue-500 focus:outline-none focus:ring-1 focus:ring-blue-500 ${error ? "border-red-500" : ""} ${className}`}
-        {...props}
-      />
-      {error && <p className="text-sm text-red-600">{error}</p>}
-    </div>
-  );
-}