Implement BDEF v1.1 grading: scoring core, per-deck pipeline, ledger, dashboard, StartOS layer

- Deterministic scoring.py (quant 60 / qual 40 / flags -15, profitability heaviest)
- Per-company JSON ledger with forecast-target chaining deck N-1 -> N
- Single-shot sandbox agent with guided-JSON fallback ladder (no tool loop)
- Portfolio dashboard with sparklines, KPI hit rates, BDEF category bars
- 48 unit tests green; endpoints smoke-tested; npm check+build green

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

icon.svg

@@ -6,13 +6,12 @@
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   </defs>
   <rect width="256" height="256" rx="48" fill="url(#bg)"/>
-  <!-- document -->
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-  <rect x="88" y="78" width="64" height="7" rx="3.5" fill="#9aa3b5"/>
-  <rect x="88" y="96" width="64" height="7" rx="3.5" fill="#9aa3b5"/>
-  <rect x="88" y="114" width="44" height="7" rx="3.5" fill="#9aa3b5"/>
-  <!-- magnifying glass (the review) -->
-  <circle cx="158" cy="150" r="34" fill="none" stroke="#c9a24b" stroke-width="10"/>
-  <line x1="182" y1="174" x2="206" y2="198" stroke="#c9a24b" stroke-width="12" stroke-linecap="round"/>
-  <circle cx="158" cy="150" r="20" fill="#c9a24b" opacity="0.18"/>
+  <!-- scorecard bars: an ascending quarterly trend -->
+  <rect x="56" y="148" width="28" height="52" rx="6" fill="#3d4666"/>
+  <rect x="100" y="124" width="28" height="76" rx="6" fill="#5a6a94"/>
+  <rect x="144" y="96" width="28" height="104" rx="6" fill="#c9a24b"/>
+  <!-- spark above the top bar: the latest grade -->
+  <path d="M186 44 l7 18 18 7 -18 7 -7 18 -7 -18 -18 -7 18 -7 z" fill="#c9a24b"/>
+  <!-- baseline -->
+  <rect x="48" y="204" width="160" height="6" rx="3" fill="#2a3040"/>
 </svg>