init: info-canicule MVP (Vigilance + climato + conseils)

Astro 5 SSR + ioredis cache Valkey, déployable sur shared-net.
- Vigilance temps réel via Opendatasoft (no-auth, LOv2)
- Carte SVG des 96 départements (gregoiredavid/france-geojson)
- Climato T° 30j par dept (CSV.GZ Météo France, cache 24h)
- Conseils officiels par phénomène (7 types Vigilance)
- /api/health (UptimeRobot) + /api/vigilance (JSON public CORS *)
- Dockerfile multi-stage, CI Forgejo deploy.yml (pattern Reteno)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

package.json

@@ -0,0 +1,28 @@
+{
+  "name": "info-canicule",
+  "version": "0.1.0",
+  "private": true,
+  "type": "module",
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro build",
+    "preview": "astro preview",
+    "start": "node ./dist/server/entry.mjs",
+    "astro": "astro",
+    "check": "astro check",
+    "typecheck": "tsc --noEmit"
+  },
+  "dependencies": {
+    "@astrojs/node": "^9.2.2",
+    "@astrojs/tailwind": "^6.0.2",
+    "astro": "^5.7.0",
+    "ioredis": "^5.6.0",
+    "tailwindcss": "^3.4.17"
+  },
+  "devDependencies": {
+    "@astrojs/check": "^0.9.4",
+    "@types/node": "^22.10.5",
+    "typescript": "^5.7.2"
+  },
+  "packageManager": "pnpm@10.0.0"
+}