T9-T12: env config + live owner search + responsive (§V11, I.env, I.web)

- config.py: env/.env (python-dotenv), defaults = konstanta lama; get_voters & dashboard pakai config
- dashboard: ?q= server filter + /api/search JSON (substring, LIKE-escape, rank global via correlated count)
- static/app.js: debounced live search; degrades to GET ?q=
- static/style.css: input search + responsive (1024/768/480), list→kartu berlabel di mobile
- test_dashboard: search/API/rank-global/config tests; .env.example; .env gitignored

config.py

@@ -0,0 +1,30 @@
+"""Konfigurasi proyek dari env / `.env`.
+
+Bacaan tipe via `os.getenv`; nilai default = konstanta lama. Muat `.env` sekali
+di sini supaya semua modul (get_voters, dashboard) berbagi sumber yang sama.
+"""
+
+import os
+
+from dotenv import load_dotenv
+
+load_dotenv()
+
+# BP target
+TARGET_BP = os.getenv('VEX_TARGET_BP', 'databisnisid')
+
+# Node RPC publik Vexanium
+API_NODE = os.getenv('VEX_API_NODE', 'https://v2.vexascan.com:2096')
+
+# Lokasi basis data SQLite (dipakai fetcher & dashboard)
+DB_PATH = os.getenv('VEX_DB_PATH', 'voters.db')
+
+# Syarat minimum stake (dalam VEX) untuk disimpan
+MIN_STAKED_VEX = float(os.getenv('VEX_MIN_STAKED_VEX', '1000'))
+
+# Dashboard: ukuran halaman list
+PAGE_SIZE = int(os.getenv('DASH_PAGE_SIZE', '50'))
+
+# Dashboard: host & port server Flask
+DASH_HOST = os.getenv('DASH_HOST', '127.0.0.1')
+DASH_PORT = int(os.getenv('DASH_PORT', '5000'))