feat(windkarte): InfoAccordion, anlagen-Hinweis, Tooltip ohne Icons

- Disclaimer aus CMS-Feld (hinweis_text) via InfoAccordion statt Hardcode
- info_text-Feld für Block-Fließtext ergänzt
- anlagen_geplant_hinweis-Feld in WindArea + Panel-Anzeige
- Tooltip-Icons entfernt (square-outline/wind-turbine/map-marker inline SVGs)
- Panel: square-outline → ruler-square für Fläche
- Iconify-Subset neu generiert

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

src/lib/components/InfoAccordion.svelte

@@ -0,0 +1,60 @@
+<!--
+  Reusable disclosure box for short collapsible info notes.
+  - `title`   — always-visible summary line
+  - `body`    — HTML rendered inside the panel ({@html})
+  - `variant` — colour palette without callers passing raw Tailwind:
+                  stein → neutral data-disclaimer tone
+                  amber → soft warning, used for uncertainty-flagged hints
+  - `open`    — initial state; default closed
+-->
+<script lang="ts">
+  import Icon from "@iconify/svelte";
+
+  type Variant = "stein" | "amber";
+
+  let {
+    title,
+    body = "",
+    variant = "stein",
+    open = false,
+    iconName = "mdi:information-outline",
+  }: {
+    title: string;
+    body?: string;
+    variant?: Variant;
+    open?: boolean;
+    iconName?: string;
+  } = $props();
+
+  const palettes = {
+    stein: {
+      container: "border-stein-200 bg-stein-50",
+      summary: "text-stein-700 hover:bg-stein-100",
+      icon: "text-stein-500",
+      body: "border-stein-200 text-stein-600",
+    },
+    amber: {
+      container: "border-amber-300 bg-amber-100/70",
+      summary: "text-amber-800 hover:bg-amber-200/70",
+      icon: "text-amber-700",
+      body: "border-amber-200 text-stein-700",
+    },
+  } as const;
+
+  const p = $derived(palettes[variant]);
+</script>
+
+<details class="info-accordion rounded-md border text-xs {p.container}" {open}>
+  <summary class="flex cursor-pointer items-center gap-1.5 px-3 py-1.5 font-medium leading-snug list-none {p.summary}">
+    <Icon icon={iconName} class="size-3.5 shrink-0 {p.icon}" />
+    <span class="flex-1">{title}</span>
+    <Icon icon="mdi:chevron-down" class="info-accordion-chevron size-3.5 shrink-0 transition-transform {p.icon}" />
+  </summary>
+  <div class="markdown prose prose-sm prose-zinc max-w-none border-t px-3 py-2 leading-relaxed {p.body}">{@html body}</div>
+</details>
+
+<style>
+  .info-accordion[open] :global(.info-accordion-chevron) {
+    transform: rotate(180deg);
+  }
+</style>