ParksTable: 小平市の公園一覧ページを追加

- /kodaira-data/parks/ に公園321件の一覧表を追加（町名・キーワードで絞り込み可）
- サイドバーに「小平市のデータ」グループを追加
- reference/ など調査用素材を .gitignore に追加

1 files changed, 210 insertions, 0 deletions

diff --git a/src/components/ParksTable.astro b/src/components/ParksTable.astro
new file mode 100644
index 0000000..268bdfe
--- /dev/null
+++ b/src/components/ParksTable.astro
@@ -0,0 +1,210 @@
+---
+// 小平市の公園一覧（/kodaira-data/parks/）を表示する。
+// データは src/data/kodaira-parks.json（321件、市の公開資料から作成）。
+// 町名セレクトとキーワード入力で絞り込む（絞り込みは利用者の端末で実行）。
+import parksData from "@/data/kodaira-parks.json";
+
+type Park = Record<string, string>;
+const parks = parksData as Park[];
+
+const EMPTY = "—";
+
+const columns: { key: string; label: string; numeric?: boolean; wide?: boolean }[] = [
+  { key: "公園名", label: "公園名" },
+  { key: "住所", label: "住所" },
+  { key: "面積㎡", label: "面積（㎡）", numeric: true },
+  { key: "500㎡以上", label: "500㎡以上" },
+  { key: "種別", label: "種別" },
+  { key: "南西部指定管理", label: "南西部指定管理" },
+  { key: "トイレ", label: "トイレ", wide: true },
+  { key: "水飲み場", label: "水飲み場" },
+  { key: "ベンチ・椅子", label: "ベンチ・椅子", wide: true },
+  { key: "テーブル", label: "テーブル", wide: true },
+  { key: "防災用具", label: "防災用具", wide: true },
+  { key: "ボール遊び", label: "ボール遊び", wide: true },
+  { key: "遊具", label: "遊具", wide: true },
+  { key: "備考", label: "備考", wide: true },
+];
+
+function display(key: string, value: string): string {
+  if (value === "" || value == null) return EMPTY;
+  if (key === "面積㎡") {
+    const n = Number(value);
+    if (Number.isFinite(n)) return n.toLocaleString("ja-JP");
+  }
+  return value;
+}
+
+// 検索対象（公園名・住所・町名・種別・ボール遊び・遊具・備考）。
+function searchIndex(p: Park): string {
+  return [
+    p["公園名"],
+    p["住所"],
+    p["町名"],
+    p["種別"],
+    p["ボール遊び"],
+    p["遊具"],
+    p["備考"],
+  ]
+    .join(" ")
+    .toLowerCase();
+}
+
+const towns = [...new Set(parks.map((p) => p["町名"]))].sort((a, b) =>
+  a.localeCompare(b, "ja"),
+);
+const total = parks.length;
+---
+
+<div class="parks" data-parks>
+  <div class="parks-controls">
+    <label>
+      <span>町名</span>
+      <select data-parks-town>
+        <option value="">すべての町名</option>
+        {towns.map((town) => (
+          <option value={town}>{town}</option>
+        ))}
+      </select>
+    </label>
+    <label>
+      <span>キーワード</span>
+      <input type="search" data-parks-search placeholder="公園名・住所・遊具など" />
+    </label>
+    <span class="parks-count" data-parks-count aria-live="polite">{total}件</span>
+  </div>
+
+  <div class="parks-scroll">
+    <table>
+      <thead>
+        <tr>
+          {columns.map((col) => (
+            <th scope="col">{col.label}</th>
+          ))}
+        </tr>
+      </thead>
+      <tbody>
+        {parks.map((park) => (
+          <tr data-town={park["町名"]} data-search={searchIndex(park)}>
+            {columns.map((col) => (
+              <td
+                class:list={[
+                  col.numeric && "is-num",
+                  col.wide && "is-wide",
+                  park[col.key] === "" && "is-empty",
+                ]}
+              >
+                {display(col.key, park[col.key])}
+              </td>
+            ))}
+          </tr>
+        ))}
+      </tbody>
+    </table>
+  </div>
+</div>
+
+<style>
+  .parks-controls {
+    display: flex;
+    flex-wrap: wrap;
+    gap: 0.75rem 1rem;
+    align-items: center;
+    margin: 1rem 0;
+  }
+  .parks-controls label {
+    display: inline-flex;
+    align-items: center;
+    gap: 0.4rem;
+    font-size: 0.9rem;
+  }
+  .parks-controls select,
+  .parks-controls input {
+    padding: 0.3rem 0.5rem;
+    border: 1px solid var(--sl-color-hairline, #ccc);
+    border-radius: 0.3rem;
+    background: var(--sl-color-bg, #fff);
+    color: var(--sl-color-text, inherit);
+    font: inherit;
+  }
+  .parks-count {
+    margin-left: auto;
+    font-size: 0.9rem;
+    color: var(--sl-color-gray-3, #666);
+  }
+  .parks-scroll {
+    overflow-x: auto;
+    -webkit-overflow-scrolling: touch;
+    border: 1px solid var(--sl-color-hairline, #ddd);
+    border-radius: 0.3rem;
+  }
+  .parks table {
+    width: 100%;
+    border-collapse: collapse;
+    font-size: 0.85rem;
+  }
+  .parks th,
+  .parks td {
+    border-bottom: 1px solid var(--sl-color-hairline, #ddd);
+    border-right: 1px solid var(--sl-color-hairline, #ddd);
+    padding: 0.35rem 0.55rem;
+    text-align: left;
+    vertical-align: top;
+    white-space: nowrap;
+  }
+  .parks th:last-child,
+  .parks td:last-child {
+    border-right: none;
+  }
+  .parks thead th {
+    position: sticky;
+    top: 0;
+    z-index: 1;
+    background: var(--sl-color-gray-6, #f2f2f2);
+    color: var(--sl-color-white, inherit);
+  }
+  .parks tbody tr:nth-child(even) td {
+    background: color-mix(in srgb, var(--sl-color-text, #333) 5%, transparent);
+  }
+  .parks .is-num {
+    text-align: right;
+    font-variant-numeric: tabular-nums;
+  }
+  .parks .is-wide {
+    white-space: normal;
+    min-width: 11rem;
+    max-width: 20rem;
+  }
+  .parks .is-empty {
+    color: var(--sl-color-gray-4, #aaa);
+    text-align: center;
+  }
+</style>
+
+<script>
+  document.querySelectorAll("[data-parks]").forEach((root) => {
+    const select = root.querySelector<HTMLSelectElement>("[data-parks-town]");
+    const search = root.querySelector<HTMLInputElement>("[data-parks-search]");
+    const count = root.querySelector("[data-parks-count]");
+    const rows = Array.from(root.querySelectorAll<HTMLTableRowElement>("tbody tr"));
+    const total = rows.length;
+
+    const apply = () => {
+      const town = select ? select.value : "";
+      const query = search ? search.value.trim().toLowerCase() : "";
+      let shown = 0;
+      rows.forEach((row) => {
+        const okTown = !town || row.dataset.town === town;
+        const okText = !query || (row.dataset.search || "").includes(query);
+        const ok = okTown && okText;
+        row.hidden = !ok;
+        if (ok) shown += 1;
+      });
+      if (count) count.textContent = `${shown} / ${total}件`;
+    };
+
+    select?.addEventListener("change", apply);
+    search?.addEventListener("input", apply);
+    apply();
+  });
+</script>