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>

orchestrator/tests/fixtures/extraction_q2.json

@@ -0,0 +1,26 @@
+{
+  "schema_version": 1,
+  "deck": {
+    "company_hint": "Acme Robotics",
+    "period": "2026-Q2",
+    "meeting_date": "2026-07-14",
+    "title": "Acme Robotics — Q2 2026 Board Deck",
+    "truncated": false
+  },
+  "kpis": [
+    {"name": "ARR", "canonical_name": "arr", "actual": 11.0, "unit": "$M", "period": "2026-Q2", "direction": "gte", "profitability": false, "target_in_deck": null, "source": "slide 3, financial summary", "notes": ""},
+    {"name": "Logo Churn", "canonical_name": "churn_rate", "actual": 3.5, "unit": "%", "period": "2026-Q2", "direction": "lte", "profitability": false, "target_in_deck": null, "source": "slide 5, retention", "notes": ""},
+    {"name": "EBITDA Margin", "canonical_name": "ebitda_margin", "actual": -3.0, "unit": "%", "period": "2026-Q2", "direction": "gte", "profitability": true, "target_in_deck": null, "source": "slide 4, P&L bridge", "notes": ""},
+    {"name": "Cash Balance", "canonical_name": "cash_balance", "actual": 13.0, "unit": "$M", "period": "2026-Q2", "direction": "gte", "profitability": true, "target_in_deck": null, "source": "slide 4, balance sheet", "notes": ""}
+  ],
+  "forward_targets": [
+    {"name": "ARR", "canonical_name": "arr", "target": 14.0, "unit": "$M", "target_period": "2026-Q3", "direction": "gte", "profitability": false, "source": "slide 9, guidance"}
+  ],
+  "red_flag_candidates": [
+    {"code": "adjusted_metrics", "description": "EBITDA presented on an adjusted basis with no bridge to GAAP", "severity": 2, "evidence": "slide 4 footnote"}
+  ],
+  "narrative": {
+    "summary": "Mixed Q2: ARR missed guidance at $11.0M vs $12.0M, churn beat, margin improved but missed the -2% target. Pipeline metric no longer reported.",
+    "asks": ["Approve revised FY2026 hiring plan"]
+  }
+}