feat(site-finder/v2): resource legend overlay + light theme polish

— V2MapLegend overlay над cockpit-картой (электр/вода/канал/тепло/газ)
  с nearest_m + статус-точка, источник utilities.summary (subtype-buckets
  зеркалят backend _nearest() aliases; electric расширен power_line, gas
  включает legacy generic pipeline).
— Per-theme заголовок карты: dark «СПУТНИК · СВЕЖИЙ СНИМОК», light
  «СПУТНИК · СХЕМА ПОДКЛЮЧЕНИЙ» (toggle через CSS [data-theme], без JS).
— Точечный light-theme contrast в v2.module.css: kv/eng значения,
  drawer eyebrow, .more / .ver / активная вкладка с cyan→accent-blue,
  status-dot halo off на белом. Dark не тронут.

Scope: только ptica-v2/* и v2.module.css. PticaMapInner (шарится со
старым ptica) не тронут.

frontend/src/app/site-finder/analysis/[cad]/v2/v2.module.css

@@ -1891,3 +1891,167 @@
     transform: translateY(-3px);
   }
 }
+
+/* =====================================================================
+ * MAP — per-theme title + resource legend overlay
+ * (matches prototype `ptica-v2/index.html` `.map-head` + `.legend .lg-res`)
+ * ===================================================================== */
+
+/* Per-theme map title — both spans rendered, CSS shows one. Mirrors the
+   prototype `.tnum-d` / `.tnum-l` toggle. */
+.mapTitleDark,
+.mapTitleLight {
+  display: none;
+}
+.v2Root[data-theme="dark"] .mapTitleDark {
+  display: inline;
+}
+.v2Root[data-theme="light"] .mapTitleLight {
+  display: inline;
+}
+
+/* Resource legend (top-left, under the map title) — compact 5-row panel. */
+.mapLegend {
+  position: absolute;
+  left: 11px;
+  top: 34px;
+  z-index: 6;
+  min-width: 168px;
+  max-width: 200px;
+  background: var(--surface-strong);
+  border: 1px solid var(--border);
+  border-radius: var(--radius-xs);
+  padding: 8px 9px;
+  backdrop-filter: blur(3px);
+  pointer-events: none;
+}
+.mapLegendTitle {
+  font-family: var(--font-mono);
+  font-size: 7.5px;
+  letter-spacing: 0.1em;
+  text-transform: uppercase;
+  color: var(--text-soft);
+  margin: 0 0 5px;
+}
+.mapLegendRow {
+  display: flex;
+  align-items: center;
+  gap: 6px;
+  height: 15px;
+  font-size: 9px;
+}
+.mapLegendDot {
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  flex: 0 0 auto;
+  box-shadow: 0 0 5px currentColor;
+}
+.mapLegendLabel {
+  font-family: var(--font-mono);
+  letter-spacing: 0.04em;
+  text-transform: uppercase;
+  color: var(--text);
+  font-size: 8.5px;
+}
+.mapLegendDist {
+  margin-left: auto;
+  font-family: var(--font-mono);
+  font-size: 8.5px;
+  color: var(--text-muted);
+  font-variant-numeric: tabular-nums;
+}
+.mapLegendDistEmpty {
+  color: var(--text-soft);
+  opacity: 0.7;
+}
+
+/* =====================================================================
+ * LIGHT THEME — targeted contrast polish
+ * Tokens stay; just bump the value-side text and the cyan accents that
+ * appear washed-out on white. Dark theme is untouched.
+ * ===================================================================== */
+
+/* kv-row: value text on white needs darker ink. */
+.v2Root[data-theme="light"] .kv .v {
+  color: var(--text-strong);
+}
+
+/* Инженерия status-row: distance was --text-soft (#768493 ≈ AA-borderline
+   at 12px on white); push to --text-muted (#51616f) for solid AA. */
+.v2Root[data-theme="light"] .engRow .st .dm {
+  color: var(--text-muted);
+}
+/* Status-dot glow on white reads as a halo — soften it. */
+.v2Root[data-theme="light"] .engRow .nm .sd {
+  box-shadow: none;
+}
+
+/* Map-legend value column — same readability bump on white. */
+.v2Root[data-theme="light"] .mapLegendDist {
+  color: var(--text-strong);
+}
+.v2Root[data-theme="light"] .mapLegendLabel {
+  color: var(--text-strong);
+}
+.v2Root[data-theme="light"] .mapLegendDot {
+  box-shadow: none;
+}
+/* Map title (light): drop the dark text-shadow that makes thin uppercase
+   look smudgy on a satellite-light map base. */
+.v2Root[data-theme="light"] .mapHead .ttl {
+  text-shadow: 0 1px 2px rgba(255, 255, 255, 0.6);
+  color: var(--text-strong);
+}
+
+/* Cards `Подробнее →` — cyan on white is faint. Swap to the deeper blue. */
+.v2Root[data-theme="light"] .more {
+  color: var(--accent-blue);
+}
+
+/* Drawer eyebrow (cyan in dark) — use blue on white for AA. */
+.v2Root[data-theme="light"] .drawerH .dhEyebrow {
+  color: var(--accent-blue);
+}
+
+/* Topbar version-chip: cyan text on a white pill is illegible. */
+.v2Root[data-theme="light"] .ver {
+  color: var(--accent-blue);
+  border-color: var(--border-strong);
+  background: var(--surface);
+}
+/* Topbar clock — separator-like vertical line between time + date is faint;
+   strengthen the date line and the chip border for visible structure. */
+.v2Root[data-theme="light"] .clock .date {
+  color: var(--text-muted);
+}
+
+/* Active tab underline — cyan + glow on white reads as a pale smudge.
+   Swap to brand blue + drop the glow halo. */
+.v2Root[data-theme="light"] .tabActive::after {
+  background: var(--accent-blue);
+  box-shadow: none;
+}
+/* Rail active marker — same treatment. */
+.v2Root[data-theme="light"] .railItemActive {
+  color: var(--accent-blue);
+}
+.v2Root[data-theme="light"] .railItemActive::before {
+  background: var(--accent-blue);
+  box-shadow: none;
+}
+
+/* Generic note / drawer note / source — bump from --text-soft to --text-muted
+   on white so the caveat copy stays readable but still secondary. */
+.v2Root[data-theme="light"] .note,
+.v2Root[data-theme="light"] .dnote,
+.v2Root[data-theme="light"] .dsource {
+  color: var(--text-muted);
+}
+
+/* Section separator line inside drawer (`::after` on .dsecT) — barely visible
+   on white at 10% alpha; strengthen the border-faint reach within drawer. */
+.v2Root[data-theme="light"] .dsecT::after,
+.v2Root[data-theme="light"] .drow {
+  border-color: rgba(40, 70, 95, 0.16);
+}

frontend/src/components/site-finder/ptica-v2/V2Map.tsx

@@ -19,6 +19,7 @@ import styles from "@/app/site-finder/analysis/[cad]/v2/v2.module.css";
 import type { ParcelAnalysis } from "@/types/site-finder";
 import { useConnectionPoints } from "@/hooks/useConnectionPoints";
 import { useCustomPois } from "@/hooks/useCustomPois";
+import { V2MapLegend } from "@/components/site-finder/ptica-v2/V2MapLegend";
 
 const PticaMapInner = dynamic(
   () => import("@/components/site-finder/ptica/PticaMapInner"),
@@ -49,9 +50,20 @@ export function V2Map({ analysis }: Props) {
           customPois={customPois}
         />
       </div>
+      {/* Map title — text differs per theme; only one span is shown at a time
+          via the [data-theme="..."] selectors in v2.module.css (mirrors the
+          prototype `.tnum-d` / `.tnum-l` toggle pattern). */}
       <div className={styles.mapHead}>
-        <span className={styles.ttl}>Карта участка</span>
+        <span className={`${styles.ttl} ${styles.mapTitleDark}`}>
+          СПУТНИК · СВЕЖИЙ СНИМОК
+        </span>
+        <span className={`${styles.ttl} ${styles.mapTitleLight}`}>
+          СПУТНИК · СХЕМА ПОДКЛЮЧЕНИЙ
+        </span>
       </div>
+      {/* Resource legend overlay (sibling of PticaMapInner, sits on top of the
+          map via absolute positioning — does not touch the shared inner map). */}
+      <V2MapLegend analysis={analysis} />
     </div>
   );
 }

frontend/src/components/site-finder/ptica-v2/V2MapLegend.tsx

@@ -0,0 +1,133 @@
+"use client";
+
+/**
+ * V2MapLegend — compact resource legend overlay rendered ON TOP of the cockpit
+ * map card (prototype `ptica-v2/index.html`, block `.legend > .lg-block.lg-res`).
+ *
+ * Five rows — ЭЛЕКТРИЧЕСТВО / ВОДА / КАНАЛИЗАЦИЯ / ТЕПЛОСНАБЖЕНИЕ / ГАЗ — each
+ * showing the distance to the nearest engineering node + a status-dot (green when
+ * the узел is within ~1 km, orange when further). Data comes from
+ * `analysis.utilities.summary[]` whose `subtype` values are the OSM `road_class`
+ * tags produced by the backend (see `noise_loader._NOISE_QUERIES` + `parcels.py`
+ * `_nearest()` aliases) — we aggregate them into the 5 prototype buckets.
+ *
+ * The legend is a SIBLING of `PticaMapInner` inside `V2Map` (the inner Leaflet
+ * mount is shared with the старый ptica route and must NOT be touched). All
+ * styles live in the scoped v2 module so the overlay never leaks into the
+ * application chrome.
+ */
+
+import styles from "@/app/site-finder/analysis/[cad]/v2/v2.module.css";
+import type { ParcelAnalysis } from "@/types/site-finder";
+
+type ResourceKey = "electric" | "water" | "sewer" | "heat" | "gas";
+
+interface ResourceDef {
+  key: ResourceKey;
+  label: string;
+  /** OSM road_class values that count toward this bucket. */
+  subtypes: readonly string[];
+  /** CSS var for the dot accent color (matches prototype --res-* tokens). */
+  color: string;
+}
+
+// Aliases mirror backend `_nearest()` in `backend/app/api/v1/parcels.py`:
+//   electric ← substation | transformer | power_line
+//   water    ← water_main | water_works | water_tower
+//   sewer    ← sewerage
+//   heat     ← heat_substation
+//   gas      ← gas_pipeline (legacy generic «pipeline» falls under gas)
+const RESOURCES: readonly ResourceDef[] = [
+  {
+    key: "electric",
+    label: "ЭЛЕКТРИЧЕСТВО",
+    subtypes: ["substation", "transformer", "power_line"],
+    color: "var(--res-electric)",
+  },
+  {
+    key: "water",
+    label: "ВОДА",
+    subtypes: ["water_main", "water_works", "water_tower"],
+    color: "var(--res-water)",
+  },
+  {
+    key: "sewer",
+    label: "КАНАЛИЗАЦИЯ",
+    subtypes: ["sewerage"],
+    color: "var(--res-sewer)",
+  },
+  {
+    key: "heat",
+    label: "ТЕПЛОСНАБЖЕНИЕ",
+    subtypes: ["heat_substation"],
+    color: "var(--res-heat)",
+  },
+  {
+    key: "gas",
+    label: "ГАЗ",
+    subtypes: ["gas_pipeline", "pipeline"],
+    color: "var(--res-gas)",
+  },
+] as const;
+
+const OK_THRESHOLD_M = 1000;
+
+function formatDistanceMeters(m: number): string {
+  // Prototype uses tabular-num, single-line «1 240 м». Round to whole meters.
+  return `${Math.round(m).toLocaleString("ru-RU")} м`;
+}
+
+function nearestForResource(
+  summary: ReadonlyArray<{ subtype: string; nearest_m: number }>,
+  subtypes: readonly string[],
+): number | null {
+  let best: number | null = null;
+  for (const u of summary) {
+    if (!subtypes.includes(u.subtype)) continue;
+    if (best === null || u.nearest_m < best) best = u.nearest_m;
+  }
+  return best;
+}
+
+interface Props {
+  analysis: ParcelAnalysis;
+}
+
+export function V2MapLegend({ analysis }: Props) {
+  const summary = analysis.utilities?.summary ?? [];
+
+  return (
+    <div className={styles.mapLegend} aria-label="Подключение ресурсов">
+      <div className={styles.mapLegendTitle}>ТОЧКИ ПОДКЛЮЧЕНИЯ РЕСУРСОВ</div>
+      {RESOURCES.map((res) => {
+        const nearest = nearestForResource(summary, res.subtypes);
+        const hasData = nearest !== null;
+        const ok = hasData && nearest! <= OK_THRESHOLD_M;
+        const dotColor = hasData
+          ? ok
+            ? "var(--accent-green)"
+            : "var(--accent-orange)"
+          : "var(--text-soft)";
+        return (
+          <div
+            key={res.key}
+            className={styles.mapLegendRow}
+            style={{ color: res.color }}
+          >
+            <span
+              className={styles.mapLegendDot}
+              style={{ background: dotColor, color: dotColor }}
+              aria-hidden="true"
+            />
+            <span className={styles.mapLegendLabel}>{res.label}</span>
+            <span
+              className={`${styles.mapLegendDist} ${hasData ? "" : styles.mapLegendDistEmpty}`}
+            >
+              {hasData ? formatDistanceMeters(nearest!) : "—"}
+            </span>
+          </div>
+        );
+      })}
+    </div>
+  );
+}