T6-T8: web dashboard spec-list (§V10, I.web, I.db)

- dashboard.py: Flask read-only, paged 50/page, ORDER BY staked DESC
- templates/index.html + static/style.css: DESIGN.md Bugatti austere tokens
- test_dashboard.py: oracle (ordering, paging, read-only)
- DESIGN.md style guide (was untracked)

dashboard.py

@@ -0,0 +1,80 @@
+"""Dashboard web pemilih BP databisnisid — baca `voters.db`, sajikan spec-list.
+
+Read-only (V10): tidak pernah menulis ke DB. Data disegarkan oleh `get_voters.py`
+(run harian / cron). Styling mengikuti `DESIGN.md`.
+"""
+
+import sqlite3
+
+from flask import Flask, abort, render_template, request
+
+from get_voters import DB_PATH, TARGET_BP
+
+PAGE_SIZE = 50
+
+app = Flask(__name__)
+
+
+@app.template_filter('vex')
+def vex(value):
+    """Format jumlah VEX ala id-ID (koma ribuan, titik desimal), tanpa emoji."""
+    return f'{value:,.4f}'.replace(',', '\u00a0').replace('.', ',').replace('\u00a0', '.')
+
+
+def _db_rows(page):
+    """V10: baca satu halaman, urut staked DESC lalu owner ASC."""
+    offset = (page - 1) * PAGE_SIZE
+    conn = sqlite3.connect(DB_PATH)
+    try:
+        return conn.execute(
+            'SELECT owner, staked, weight, scanned_at FROM voters '
+            'ORDER BY staked DESC, owner ASC '
+            'LIMIT ? OFFSET ?',
+            (PAGE_SIZE, offset),
+        ).fetchall()
+    finally:
+        conn.close()
+
+
+def _stats():
+    """Ringkasan agregat untuk band spec."""
+    conn = sqlite3.connect(DB_PATH)
+    try:
+        total_voters, total_staked, top_staked = conn.execute(
+            'SELECT COUNT(*), COALESCE(SUM(staked), 0), COALESCE(MAX(staked), 0) '
+            'FROM voters'
+        ).fetchone()
+        scanned = conn.execute(
+            'SELECT COALESCE(MAX(scanned_at), \'\') FROM voters'
+        ).fetchone()[0]
+    finally:
+        conn.close()
+    return total_voters, total_staked, top_staked, scanned
+
+
+@app.get('/')
+def index():
+    try:
+        page = max(1, int(request.args.get('page', 1)))
+    except ValueError:
+        abort(400)
+    total_voters, total_staked, top_staked, scanned = _stats()
+    total_pages = max(1, (total_voters + PAGE_SIZE - 1) // PAGE_SIZE)
+    page = min(page, total_pages)
+    rows = _db_rows(page)
+
+    return render_template(
+        'index.html',
+        bp=TARGET_BP,
+        rows=rows,
+        page=page,
+        total_pages=total_pages,
+        total_voters=total_voters,
+        total_staked=total_staked,
+        top_staked=top_staked,
+        scanned=scanned,
+    )
+
+
+if __name__ == '__main__':
+    app.run(host='127.0.0.1', port=5000, debug=False)