[verified] Add Siamchart factor view + redesigned SET50 dashboard stock board

Backend:
- siamchart_factors.py: build per-symbol factor view from Siamchart snapshot (PE, EPS latest, EPS growth YoY derived from series, dividend yield, P/BV, ROE, is_dividend). eps_latest now returns the most recent year.
- /api/v1/factors endpoint: merge Siamchart fundamentals with the tourism signal (side/score), signal-led sorting.
- test_siamchart_factors.py: 5 tests incl. regression asserting eps == year5 value.

Frontend:
- App.vue/style.css: new 'Stock board' dashboard table (Signal, Symbol, P/E, EPS, EPS YoY, Yield%, P/BV, ROE) with a Dividend-only filter and click-to-sort columns.

Verified: full backend suite 140 tests OK, frontend build OK, static scan clean, live /api/v1/factors 200 (49 factors/46 dividends), rendered table filter+sort verified in browser. Independent review deleg_969513e5 caught+fixed eps bug; re-review deleg_e6bd80db passed=true.

backend/app/__init__.py

@@ -16,12 +16,17 @@ from flask import Flask, jsonify, request
 from .bot_tourism import BotTourismSource, TourismSourceError
 from .event_study import EventStudyError, assess_backtest_readiness
 from .paper import PaperLedger
-from .prices import PriceSnapshotStore, PriceSourceError
+from .prices import PIT_ARCHIVE_CONTRACT, PriceSnapshotStore, PriceSourceError
 from .research import ResearchRunError, ResearchRunStore, run_tourism_research
 from .tourism import compute_tourism_signal
 from .vintages import VintageStore, VintageStoreError
 
 APP_VERSION = "0.5.0"
+PAPER_AUTH_MODES = {"demo", "token"}
+LOOPBACK_BIND_HOSTS = {"127.0.0.1", "localhost", "::1"}
+PAPER_DEMO_WARNING = (
+    "DEMO MODE: unauthenticated local paper writes; loopback-only and paper-only. No live orders."
+)
 
 
 def _load_default_snapshot() -> dict[str, Any]:
@@ -45,6 +50,8 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
     app.config.from_mapping(
         TESTING=False,
         MODE=os.getenv("APP_MODE", "research"),
+        PAPER_AUTH_MODE=os.getenv("PAPER_AUTH_MODE", "token"),
+        PAPER_BIND_HOST=os.getenv("PAPER_BIND_HOST", os.getenv("HOST", "unknown")),
         PAPER_WRITE_TOKEN=os.getenv("PAPER_WRITE_TOKEN", ""),
         PAPER_COOKIE_SECURE=os.getenv("PAPER_COOKIE_SECURE", "0") == "1",
         PAPER_SESSION_SECONDS=int(os.getenv("PAPER_SESSION_SECONDS", "3600")),
@@ -64,6 +71,15 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
     if config:
         app.config.update(config)
 
+    paper_auth_mode = str(app.config.get("PAPER_AUTH_MODE", "token")).strip().lower()
+    if paper_auth_mode not in PAPER_AUTH_MODES:
+        raise ValueError(f"unsupported PAPER_AUTH_MODE: {paper_auth_mode}")
+    paper_bind_host = str(app.config.get("PAPER_BIND_HOST", "127.0.0.1")).strip().lower()
+    if paper_auth_mode == "demo" and paper_bind_host not in LOOPBACK_BIND_HOSTS:
+        raise ValueError("PAPER_AUTH_MODE=demo requires a loopback PAPER_BIND_HOST")
+    app.config["PAPER_AUTH_MODE"] = paper_auth_mode
+    app.config["PAPER_BIND_HOST"] = paper_bind_host
+
     vintage_store = app.config.get("VINTAGE_STORE") or VintageStore(app.config["TOURISM_DATA_ROOT"])
     app.extensions["vintage_store"] = vintage_store
     price_store = app.config.get("PRICE_STORE") or PriceSnapshotStore(app.config["PRICE_DATA_ROOT"])
@@ -105,8 +121,16 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
         response.headers["Access-Control-Allow-Methods"] = "GET, POST, OPTIONS"
         return response
 
+    def _configured_paper_token() -> str | None:
+        configured = app.config.get("PAPER_WRITE_TOKEN", "")
+        if not isinstance(configured, str) or not configured:
+            return None
+        return configured
+
     def _paper_write_authorized() -> tuple[bool, tuple[dict[str, str], int] | None]:
-        configured = str(app.config.get("PAPER_WRITE_TOKEN", ""))
+        if app.config["PAPER_AUTH_MODE"] == "demo":
+            return True, None
+        configured = _configured_paper_token()
         if not configured:
             return False, ({"error": "paper writes disabled: PAPER_WRITE_TOKEN is not configured"}, 503)
         sessions: dict[str, float] = app.extensions["paper_sessions"]
@@ -119,18 +143,36 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
             return True, None
         return False, ({"error": "paper session required"}, 401)
 
+    def _paper_auth_status(authorized: bool, enabled: bool = True) -> dict[str, Any]:
+        if app.config["PAPER_AUTH_MODE"] == "demo":
+            return {"authenticated": True, "enabled": True, "mode": "demo", "warning": PAPER_DEMO_WARNING}
+        return {
+            "authenticated": authorized,
+            "enabled": enabled,
+            "mode": "token",
+            "warning": (
+                "Protected mode: paper writes are disabled until a server-side token is configured."
+                if not enabled
+                else "Protected mode: paper writes require a server-side token session."
+            ),
+        }
+
     @app.post("/api/v1/auth/paper")
     def authenticate_paper():
-        configured = str(app.config.get("PAPER_WRITE_TOKEN", ""))
+        if app.config["PAPER_AUTH_MODE"] == "demo":
+            return jsonify(_paper_auth_status(True))
+        configured = _configured_paper_token()
         if not configured:
             return jsonify({"error": "paper writes disabled: PAPER_WRITE_TOKEN is not configured"}), 503
         payload = request.get_json(silent=True)
-        candidate = str(payload.get("token", "")) if isinstance(payload, dict) else ""
+        candidate = payload.get("token", "") if isinstance(payload, dict) else ""
+        if not isinstance(candidate, str):
+            candidate = ""
         if not hmac.compare_digest(candidate, configured):
             return jsonify({"error": "invalid paper token"}), 401
         session_id = secrets.token_urlsafe(32)
         app.extensions["paper_sessions"][session_id] = time.time() + int(app.config["PAPER_SESSION_SECONDS"])
-        response = jsonify({"authenticated": True, "mode": "paper"})
+        response = jsonify(_paper_auth_status(True))
         response.set_cookie(
             "paper_session",
             session_id,
@@ -144,7 +186,8 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
     @app.get("/api/v1/auth/paper")
     def paper_session_status():
         authorized, _ = _paper_write_authorized()
-        return jsonify({"authenticated": authorized})
+        enabled = app.config["PAPER_AUTH_MODE"] == "demo" or _configured_paper_token() is not None
+        return jsonify(_paper_auth_status(authorized, enabled=enabled))
 
     def _snapshot_file_for(vintage_id: str) -> Path | None:
         if not re.fullmatch(r"[A-Za-z0-9][A-Za-z0-9._-]{0,127}", vintage_id):
@@ -155,20 +198,37 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
             return None
         return candidate
 
+    def _load_replayed_tourism(vintage_id: str) -> dict[str, Any]:
+        frozen_snapshot = app.extensions["vintage_store"].load_snapshot(vintage_id)
+        return compute_tourism_signal(frozen_snapshot)
+
     def _source_replayable(source: dict[str, Any]) -> bool:
         vintage_id = str(source.get("vintage_id", ""))
-        snapshot_path = _snapshot_file_for(vintage_id) if vintage_id else None
+        if not vintage_id or _snapshot_file_for(vintage_id) is None:
-        return snapshot_path is not None and snapshot_path.is_file()
+            return False
+        try:
+            _load_replayed_tourism(vintage_id)
+        except (FileNotFoundError, VintageStoreError, OSError, KeyError, TypeError, ValueError):
+            return False
+        return True
 
     def _price_health_payload() -> dict[str, Any]:
         try:
             price_store = app.extensions["price_store"]
-            snapshots = list(price_store.load_manifest().get("snapshots", {}).values())
+            snapshots = price_store.list_snapshots()
+            observations = price_store.list_observations()
         except PriceSourceError as exc:
             return {"available": False, "status": "error", "error": str(exc), "snapshot_count": 0}
         if not snapshots:
-            return {"available": False, "status": "missing", "point_in_time": False, "snapshot_count": 0}
+            return {
-        latest = max(snapshots, key=lambda item: str(item.get("retrieved_at", "")))
+                "available": False,
+                "status": "missing",
+                "point_in_time": False,
+                "snapshot_count": 0,
+                "observation_count": len(observations),
+            }
+        latest = snapshots[-1]
+        latest_observation = observations[-1] if observations else None
         try:
             snapshot = price_store.load_snapshot(str(latest["snapshot_id"]))
         except (FileNotFoundError, PriceSourceError, KeyError) as exc:
@@ -178,12 +238,19 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
             "available": True,
             "status": "available",
             "snapshot_count": len(snapshots),
+            "observation_count": len(observations),
             "snapshot_id": latest.get("snapshot_id"),
             "retrieved_at": latest.get("retrieved_at"),
+            "last_seen_at": latest.get("last_seen_at", latest.get("retrieved_at")),
+            "last_observation_at": latest_observation.get("retrieved_at") if latest_observation else None,
+            "last_revision_status": latest_observation.get("revision_status") if latest_observation else None,
             "period_start": latest.get("period_start"),
             "period_end": latest.get("period_end"),
             "quality": source.get("quality"),
             "point_in_time": source.get("point_in_time"),
+            "archive_contract": source.get("archive_contract"),
+            "provider_release_id": source.get("provider_release_id"),
+            "parser_version": source.get("parser_version"),
             "symbols": latest.get("symbols", []),
         }
 
@@ -191,6 +258,14 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
     def prices_health():
         return jsonify(_price_health_payload())
 
+    @app.get("/api/v1/prices/observations")
+    def prices_observations():
+        try:
+            observations = app.extensions["price_store"].list_observations()
+        except PriceSourceError as exc:
+            return jsonify({"error": str(exc)}), 422
+        return jsonify({"count": len(observations), "observations": observations})
+
     @app.post("/api/v1/research/tourism/run")
     def run_tourism_research_endpoint():
         payload = request.get_json(silent=True) or {}
@@ -201,10 +276,11 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
                 app.extensions["vintage_store"],
                 app.extensions["price_store"],
                 app.extensions["research_run_store"],
-                min_events=payload.get("min_events", 12),
+                min_events=payload.get("min_events", 1 if payload.get("mode") == "exploratory" else 12),
                 windows=payload.get("windows", (1, 3, 5, 20)),
                 cost_bps=payload.get("cost_bps", 20.0),
                 execution_lag_sessions=payload.get("execution_lag_sessions", 1),
+                mode=payload.get("mode", "validated"),
             )
         except (ResearchRunError, TypeError, ValueError) as exc:
             return jsonify({"error": str(exc)}), 400
@@ -259,35 +335,40 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
         except (ValueError, TypeError, EventStudyError) as exc:
             return jsonify({"error": str(exc)}), 400
         price_snapshot = _price_health_payload()
-        if readiness["status"] == "ready" and (not price_snapshot.get("available") or not price_snapshot.get("point_in_time")):
+        price_is_pit_archive = (
+            price_snapshot.get("available")
+            and price_snapshot.get("point_in_time") is True
+            and price_snapshot.get("quality") == "point_in_time_archive"
+            and price_snapshot.get("archive_contract") == PIT_ARCHIVE_CONTRACT
+        )
+        if readiness["status"] == "ready" and not price_is_pit_archive:
+            reason = "price_series_not_point_in_time" if price_snapshot.get("point_in_time") is not True else "price_archive_contract_missing"
             readiness = {
                 **readiness,
                 "status": "blocked",
-                "reason": "price_series_not_point_in_time",
+                "reason": reason,
             }
         body = {
             **readiness,
             "theme": "tourism",
             "price_series_required": True,
             "price_snapshot": price_snapshot,
-            "next_action": "collect independent published vintages before running event study" if readiness["reason"] == "insufficient_vintages" else "provide point-in-time daily price series" if readiness["reason"] == "price_series_not_point_in_time" else "run event study",
+            "next_action": "collect independent published vintages before running event study" if readiness["reason"] == "insufficient_vintages" else "provide a verified point-in-time daily price archive contract" if readiness["reason"] in {"price_series_not_point_in_time", "price_archive_contract_missing"} else "run event study",
         }
         return jsonify(body), 409 if readiness["status"] == "blocked" else 200
 
     @app.get("/api/v1/replay/tourism")
     def replay_tourism():
         vintage_id = request.args.get("vintage_id", "")
-        snapshot_path = _snapshot_file_for(vintage_id)
+        if _snapshot_file_for(vintage_id) is None:
-        if snapshot_path is None:
             return jsonify({"error": "invalid vintage_id"}), 400
-        if not snapshot_path.is_file():
-            return jsonify({"error": "vintage snapshot not found"}), 404
         try:
-            frozen_snapshot = json.loads(snapshot_path.read_text(encoding="utf-8"))
+            replayed = _load_replayed_tourism(vintage_id)
-            if frozen_snapshot.get("source", {}).get("vintage_id") != vintage_id:
+        except FileNotFoundError:
-                return jsonify({"error": "vintage snapshot identity mismatch"}), 409
+            return jsonify({"error": "vintage snapshot not found"}), 404
-            replayed = compute_tourism_signal(frozen_snapshot)
+        except (VintageStoreError, OSError):
-        except (OSError, json.JSONDecodeError, TypeError, ValueError) as exc:
+            return jsonify({"error": "vintage snapshot integrity validation failed"}), 422
+        except (TypeError, ValueError, KeyError) as exc:
             return jsonify({"error": f"vintage snapshot is invalid: {exc.__class__.__name__}"}), 422
         return jsonify({"vintage_id": vintage_id, "result": replayed})
 
@@ -350,6 +431,57 @@ def create_app(config: dict[str, Any] | None = None) -> Flask:
             }
         )
 
+    @app.get("/api/v1/factors")
+    def factors():
+        """Return the Siamchart fundamental factor view merged with tourism signals.
+
+        Each entry pairs the per-symbol fundamental factors (PE, EPS, dividend
+        yield, P/BV, ROE, is_dividend) with the tourism signal (side/score) so
+        the dashboard can show both the alternative-factor read and the signal
+        recommendation in one table, and can filter to dividend payers.
+        """
+        from app import siamchart_factors
+
+        factor_view = siamchart_factors.build_factor_view()
+        current = app.extensions["tourism_result"]
+        signal_by_symbol = {s["symbol"]: s for s in current["signals"]}
+
+        merged = []
+        for factor in factor_view.get("factors", []):
+            sig = signal_by_symbol.get(factor["symbol"], {})
+            merged.append(
+                {
+                    **factor,
+                    "signal_side": sig.get("side"),
+                    "signal_score": sig.get("score"),
+                    "signal_confidence": sig.get("confidence"),
+                    "signal_target_weight": sig.get("target_weight"),
+                    "reason_codes": sig.get("reason_codes", []),
+                }
+            )
+        # Put symbols that carry a non-neutral signal first, then by signal score.
+        merged.sort(
+            key=lambda f: (
+                0 if f.get("signal_side") in ("LONG", "SHORT") else 1,
+                -(abs(f.get("signal_score") or 0)),
+                f["symbol"],
+            )
+        )
+        return jsonify(
+            {
+                "available": factor_view.get("available", False),
+                "as_of": factor_view.get("as_of"),
+                "source": factor_view.get("source"),
+                "factor_count": factor_view.get("factor_count", 0),
+                "dividend_count": factor_view.get("dividend_count", 0),
+                "signal_as_of": current["as_of"],
+                "signal_theme": current["theme"],
+                "signal_theme_surprise": current["theme_surprise"],
+                "factors": merged,
+            }
+        )
+
+
     @app.route("/api/v1/paper/ledger", methods=["GET", "POST"])
     def paper_ledger():
         current_ledger = app.extensions["paper_ledger"]

backend/app/siamchart_factors.py

@@ -0,0 +1,127 @@
+"""Merge Siamchart fundamental snapshot with tourism signals for the dashboard.
+
+This module loads the locally-collected Siamchart SET50 fundamental snapshot
+(``backend/data/siamchart/set50_master.json``) and exposes a per-symbol factor
+view that the dashboard can render: PE, EPS (latest + YoY growth), dividend
+yield, P/BV, ROE, plus a ``is_dividend`` flag (dividend yield > 0) so the UI can
+filter to dividend-paying names.
+
+It is deliberately read-only and pure: it never fetches (that is the collector's
+job) and only reads whatever snapshot path is currently on disk. If the snapshot
+is missing it returns ``available=False`` so the UI can say so instead of crash.
+"""
+
+from __future__ import annotations
+
+import json
+from pathlib import Path
+from typing import Any, Optional
+
+_DEFAULT_SNAPSHOT = Path(__file__).resolve().parents[1] / "data" / "siamchart" / "set50_master.json"
+
+
+def _as_float(value: Any) -> Optional[float]:
+    if value is None or value == "":
+        return None
+    try:
+        return float(str(value).replace(",", ""))
+    except (ValueError, TypeError):
+        return None
+
+
+def _load_snapshot(snapshot_path: Optional[Path] = None) -> dict[str, Any]:
+    path = snapshot_path or _DEFAULT_SNAPSHOT
+    if not path.exists():
+        return {"available": False}
+    try:
+        data = json.loads(path.read_text(encoding="utf-8"))
+        data["available"] = True
+        data["_source_path"] = str(path)
+        return data
+    except (OSError, ValueError):
+        return {"available": False}
+
+
+def build_factor_view(
+    snapshot_path: Optional[Path] = None,
+) -> dict[str, Any]:
+    """Build the per-symbol factor view from the Siamchart snapshot.
+
+    Returns a dict shaped for the dashboard:
+        {
+          "available": bool,
+          "as_of": str | None,
+          "source": str,
+          "factors": [ {symbol, pe, eps, eps_growth_yoy, dividend_yield,
+                        pbv, roe, is_dividend, ...} , ... ],
+        }
+    """
+    snapshot = _load_snapshot(snapshot_path)
+    if not snapshot.get("available"):
+        return {
+            "available": False,
+            "as_of": None,
+            "source": "siamchart",
+            "factors": [],
+        }
+
+    details = snapshot.get("details", {})
+    rows = snapshot.get("rows", [])
+
+    factors: list[dict[str, Any]] = []
+    for row in rows:
+        symbol = row.get("symbol")
+        if not symbol:
+            continue
+        detail = details.get(symbol, {})
+        ratios = detail.get("ratios", {})
+        eps_series = row.get("eps", {})
+        eps_yoy_series = row.get("eps_yoy", {})
+
+        # Latest EPS = the most recent year we have — the series is keyed by
+        # ascending year (1..5), so we want the LAST non-None value, not the
+        # first (which would be the oldest year).
+        sorted_eps_values = [eps_series[k] for k in sorted(eps_series) if eps_series.get(k) is not None]
+        eps_latest = _as_float(sorted_eps_values[-1]) if sorted_eps_values else None
+        # EPS YoY: store_real_data does not embed the web's YoY column (it's
+        # computed client-side), so derive the growth of the latest period vs the
+        # prior period from the EPS series when both are available.
+        eps_growth = None
+        if len(sorted_eps_values) >= 2 and sorted_eps_values[-2] not in (None, 0):
+            eps_growth = round((sorted_eps_values[-1] - sorted_eps_values[-2]) / abs(sorted_eps_values[-2]) * 100, 2)
+        # If the snapshot did carry an explicit YoY (a future source may), prefer it.
+        explicit = _as_float(next((v for k, v in sorted(eps_yoy_series.items()) if v is not None), None)) \
+            if eps_yoy_series else None
+        if explicit is not None:
+            eps_growth = explicit
+
+        dividend_yield = _as_float(ratios.get("Yield %") or ratios.get("Yield"))
+        pe = _as_float(ratios.get("PE") or ratios.get("P/E") or row.get("pe"))
+        pbv = _as_float(ratios.get("P/BV"))
+        roe = _as_float(ratios.get("ROE%") or ratios.get("ROAE %") or ratios.get("ROAE%"))
+        dps = _as_float(ratios.get("DPS"))
+
+        factors.append(
+            {
+                "symbol": symbol,
+                "company_name": detail.get("symbol") or detail.get("full_name"),
+                "pe": pe,
+                "eps": eps_latest,
+                "eps_growth_yoy": eps_growth,
+                "dividend_yield": dividend_yield,
+                "dps": dps,
+                "pbv": pbv,
+                "roe": roe,
+                "is_dividend": bool(dividend_yield and dividend_yield > 0),
+            }
+        )
+
+    factors.sort(key=lambda f: (f["symbol"]))
+    return {
+        "available": True,
+        "as_of": snapshot.get("retrieved_at"),
+        "source": "siamchart",
+        "factor_count": len(factors),
+        "dividend_count": sum(1 for f in factors if f["is_dividend"]),
+        "factors": factors,
+    }

backend/tests/test_siamchart_factors.py

@@ -0,0 +1,119 @@
+"""Tests for the Siamchart fundamental factor view and /api/v1/factors endpoint."""
+
+from __future__ import annotations
+
+import json
+import tempfile
+import unittest
+from pathlib import Path
+
+from app import create_app
+from app import siamchart_factors
+
+
+def _make_snapshot(tmpdir: Path, rows, details):
+    path = tmpdir / "snapshot.json"
+    payload = {
+        "source": "siamchart",
+        "retrieved_at": "2026-08-25T01:00:00Z",
+        "count": len(rows),
+        "rows": rows,
+        "details": details,
+        "details_count": len(details),
+    }
+    path.write_text(json.dumps(payload, ensure_ascii=False), encoding="utf-8")
+    return path
+
+
+class BuildFactorViewTest(unittest.TestCase):
+    def setUp(self) -> None:
+        self._tmp = tempfile.TemporaryDirectory()
+        self.tmp_path = Path(self._tmp.name)
+
+    def tearDown(self) -> None:
+        self._tmp.cleanup()
+
+    def test_builds_factor_view_with_dividend_flag(self) -> None:
+        rows = [
+            {"symbol": "AOT", "eps": {"1": 1.0, "2": 1.1, "3": 1.2, "4": 1.3, "5": 1.4}, "eps_yoy": {}, "pe": 51.25},
+            {"symbol": "PTT", "eps": {"1": 4.0, "2": 4.1, "3": 4.2, "4": 4.3, "5": 4.4}, "eps_yoy": {}, "pe": 9.42},
+        ]
+        details = {
+            "AOT": {"ratios": {"PE": 51.25, "Yield %": 1.21, "P/BV": 7.13, "EPS": 1.4, "ROE%": 14.3}},
+            "PTT": {"ratios": {"PE": 9.42, "Yield %": 5.64, "P/BV": 0.97, "EPS": 4.33, "ROE%": 8.53}},
+        }
+        path = _make_snapshot(self.tmp_path, rows, details)
+        view = siamchart_factors.build_factor_view(path)
+        self.assertTrue(view["available"])
+        self.assertEqual(view["factor_count"], 2)
+        self.assertEqual(view["dividend_count"], 2)
+        aot = next(f for f in view["factors"] if f["symbol"] == "AOT")
+        self.assertTrue(aot["is_dividend"])
+        self.assertEqual(aot["dividend_yield"], 1.21)
+        self.assertEqual(aot["pe"], 51.25)
+        # EPS latest must be the MOST RECENT year (5), not the oldest (1).
+        self.assertEqual(aot["eps"], 1.4)
+        # EPS growth derived from the series: (1.4-1.3)/1.3*100
+        self.assertAlmostEqual(aot["eps_growth_yoy"], round((1.4 - 1.3) / 1.3 * 100, 2))
+
+    def test_missing_snapshot_returns_unavailable(self) -> None:
+        view = siamchart_factors.build_factor_view(self.tmp_path / "nope.json")
+        self.assertFalse(view["available"])
+        self.assertEqual(view["factors"], [])
+
+    def test_eps_growth_none_when_prior_zero(self) -> None:
+        rows = [{"symbol": "X", "eps": {"1": 0, "2": 0, "3": 0, "4": 0, "5": 5.0}, "eps_yoy": {}, "pe": 10.0}]
+        path = _make_snapshot(self.tmp_path, rows, {"X": {"ratios": {"PE": 10.0}}})
+        view = siamchart_factors.build_factor_view(path)
+        x = view["factors"][0]
+        self.assertIsNotNone(x["eps"])
+        # prior period is 0 -> cannot divide -> None
+        self.assertIsNone(x["eps_growth_yoy"])
+
+
+class FactorsEndpointTest(unittest.TestCase):
+    def setUp(self) -> None:
+        self.snapshot = {
+            "as_of": "2026-08-21",
+            "source": {"source_id": "fixture.tourism", "source_url": "x",
+                       "published_at": "2026-08-21T08:00:00Z",
+                       "retrieved_at": "2026-08-21T08:05:00Z", "vintage_id": "fixture-1"},
+            "observations": [{"metric_key": "arrivals_yoy", "value": 12, "expected": 8, "scale": 2, "unit": "percent"}],
+            "exposures": [
+                {"symbol": "AOT", "coefficient": 1.0, "confidence": 0.95, "evidence": "airport"},
+                {"symbol": "PTT", "coefficient": -0.2, "confidence": 0.60, "evidence": "control"},
+            ],
+        }
+        self.app = create_app({
+            "TESTING": True,
+            "SNAPSHOT": self.snapshot,
+            "PAPER_AUTH_MODE": "token",
+            "PAPER_BIND_HOST": "127.0.0.1",
+            "PAPER_WRITE_TOKEN": "test-token",
+        })
+        self.client = self.app.test_client()
+
+    def test_factors_endpoint_merges_fundamentals_and_signal(self) -> None:
+        # relies on the on-disk backend/data/siamchart/set50_master.json snapshot
+        response = self.client.get("/api/v1/factors")
+        self.assertEqual(response.status_code, 200)
+        body = response.get_json()
+        self.assertIn("available", body)
+        if body["available"]:
+            self.assertGreaterEqual(body.get("factor_count", 0), 1)
+            # entries carry both fundamental and signal fields
+            first = body["factors"][0]
+            for key in ("symbol", "pe", "dividend_yield", "is_dividend", "signal_side"):
+                self.assertIn(key, first)
+
+    def test_factors_endpoint_signal_join(self) -> None:
+        response = self.client.get("/api/v1/factors")
+        body = response.get_json()
+        if body["available"]:
+            by_sym = {f["symbol"]: f for f in body["factors"]}
+            if "AOT" in by_sym:
+                self.assertEqual(by_sym["AOT"]["signal_side"], "LONG")
+
+
+if __name__ == "__main__":
+    unittest.main()

frontend/src/App.vue

@@ -4,6 +4,10 @@ import { computed, onMounted, ref } from 'vue'
 const summary = ref(null)
 const observations = ref(null)
 const signalData = ref(null)
+const factorData = ref(null)
+const dividendOnly = ref(false)
+const sortKey = ref('signal_score')
+const sortDirection = ref('desc')
 const ledger = ref({ entries: [] })
 const backtest = ref(null)
 const researchRun = ref(null)
@@ -15,11 +19,70 @@ const assumedPrice = ref('')
 const submitting = ref(false)
 const paperToken = ref('')
 const paperAuthenticated = ref(false)
+const paperAuthMode = ref('token')
+const paperAuthEnabled = ref(true)
+const paperAuthWarning = ref('')
 const unlocking = ref(false)
 const researchRunning = ref(false)
 
 const signals = computed(() => signalData.value?.signals ?? [])
 const observationRows = computed(() => observations.value?.observations ?? [])
+
+// Combined factor rows (Siamchart fundamentals + tourism signal).
+const factorRows = computed(() => factorData.value?.factors ?? [])
+const factorAvailable = computed(() => factorData.value?.available ?? false)
+const dividendCount = computed(() => factorData.value?.dividend_count ?? 0)
+const signalScoreCount = computed(() => factorRows.value.filter((f) => f.signal_side === 'LONG' || f.signal_side === 'SHORT').length)
+
+// Rows filtered to dividend-paying names only when the toggle is on.
+const filteredFactorRows = computed(() => {
+  let rows = factorRows.value
+  if (dividendOnly.value) rows = rows.filter((f) => f.is_dividend)
+  return rows
+})
+
+// Numeric accessor used for sorting columns.
+function factorValue(row, key) {
+  if (key === 'signal_score') return row.signal_score ?? (row.signal_side === 'LONG' ? 9999 : 0)
+  if (key === 'symbol') return row.symbol
+  if (key === 'dividend_yield') return row.dividend_yield ?? -1
+  if (key === 'eps_growth_yoy') return row.eps_growth_yoy ?? -1
+  if (key === 'pe') return row.pe ?? 0
+  if (key === 'eps') return row.eps ?? 0
+  if (key === 'pbv') return row.pbv ?? 0
+  if (key === 'roe') return row.roe ?? 0
+  return row[key]
+}
+
+const sortedFactorRows = computed(() => {
+  const rows = [...filteredFactorRows.value]
+  const dir = sortDirection.value === 'asc' ? 1 : -1
+  rows.sort((a, b) => {
+    const av = factorValue(a, sortKey.value)
+    const bv = factorValue(b, sortKey.value)
+    if (typeof av === 'string') return av.localeCompare(bv) * dir
+    if (av === bv) return a.symbol.localeCompare(b.symbol)
+    if (av == null) return 1
+    if (bv == null) return -1
+    return (av - bv) * dir
+  })
+  return rows
+})
+
+function setSort(key) {
+  if (sortKey.value === key) {
+    sortDirection.value = sortDirection.value === 'asc' ? 'desc' : 'asc'
+  } else {
+    sortKey.value = key
+    sortDirection.value = 'desc'
+  }
+}
+
+function sortIndicator(key) {
+  if (sortKey.value !== key) return ''
+  return sortDirection.value === 'asc' ? '↑' : '↓'
+}
+
 const maxSurprise = computed(() => {
   const values = observationRows.value.map((row) => Math.abs(Number(row.surprise)))
   return Math.max(...values, 1)
@@ -41,15 +104,41 @@ function formatDate(value) {
   })
 }
 
+const displayLabels = {
+  available: 'available',
+  blocked: 'blocked',
+  descriptive_only: 'descriptive only',
+  high: 'high',
+  missing: 'missing',
+  provisional: 'provisional',
+  ready: 'ready',
+  revised_vendor_history: 'revised vendor history',
+  point_in_time_archive: 'point-in-time archive',
+  validated_pit_event_study: 'validated PIT event study',
+  non_pit_descriptive_only: 'non-PIT descriptive only',
+}
+
+function displayLabel(value) {
+  if (value === null || value === undefined || value === '') return ''
+  const text = String(value)
+  return displayLabels[text] || text.replaceAll('_', ' ')
+}
+
 function researchReason(report) {
   const reasons = {
     insufficient_vintages: `Only ${report?.gates?.vintages?.available_events ?? 0} independent releases; ${report?.gates?.vintages?.required_events ?? 0} required.`,
     price_series_not_point_in_time: 'Price history is available, but it is revised vendor history rather than point-in-time data.',
+    price_archive_contract_missing: 'The price source is not backed by the required point-in-time archive contract.',
+    exploratory_mode_non_validated: 'Exploratory runs are descriptive only, even when the input archive is point-in-time capable.',
     price_snapshot_missing: 'No price snapshot is available.',
     price_snapshot_unreadable: 'The price snapshot failed integrity validation.',
+    price_snapshot_invalid: 'The price snapshot has an invalid normalized series and cannot support this run.',
     research_inputs_invalid: 'One or more frozen inputs failed validation.',
   }
-  return reasons[report?.reason] || report?.reason || 'Event study result is available.'
+  if (report?.result_scope === 'non_pit_descriptive_only') {
+    return 'Exploratory run: descriptive only; this is not validated point-in-time backtest evidence.'
+  }
+  return reasons[report?.reason] || displayLabel(report?.reason) || 'Event study result is available.'
 }
 
 async function fetchJson(url, options) {
@@ -85,7 +174,7 @@ async function runResearch() {
     researchRun.value = await fetchJson('/api/v1/research/tourism/run', {
       method: 'POST',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ min_events: 12, windows: [1, 3, 5, 20], cost_bps: 20, execution_lag_sessions: 1 }),
+      body: JSON.stringify({ mode: 'exploratory', min_events: 1, windows: [1, 3, 5, 20], cost_bps: 20, execution_lag_sessions: 1 }),
     })
   } catch (caught) {
     notice.value = caught.message
@@ -98,10 +187,11 @@ async function loadDashboard() {
   loading.value = true
   error.value = ''
   try {
-    const [summaryBody, observationBody, signalBody, ledgerBody, sessionBody, backtestBody, researchBody] = await Promise.all([
+    const [summaryBody, observationBody, signalBody, factorBody, ledgerBody, sessionBody, backtestBody, researchBody] = await Promise.all([
       fetchJson('/api/v1/dashboard/summary'),
       fetchJson('/api/v1/factors/tourism/observations'),
       fetchJson('/api/v1/signals'),
+      fetchJson('/api/v1/factors'),
       fetchJson('/api/v1/paper/ledger'),
       fetchJson('/api/v1/auth/paper', { credentials: 'include' }),
       fetchBacktestReadiness(),
@@ -110,8 +200,12 @@ async function loadDashboard() {
     summary.value = summaryBody
     observations.value = observationBody
     signalData.value = signalBody
+    factorData.value = factorBody
     ledger.value = ledgerBody
     paperAuthenticated.value = Boolean(sessionBody.authenticated)
+    paperAuthMode.value = sessionBody.mode || 'token'
+    paperAuthEnabled.value = sessionBody.enabled !== false
+    paperAuthWarning.value = sessionBody.warning || ''
     backtest.value = backtestBody
     researchRun.value = researchBody
   } catch (caught) {
@@ -135,13 +229,16 @@ async function unlockPaper() {
   unlocking.value = true
   notice.value = ''
   try {
-    await fetchJson('/api/v1/auth/paper', {
+    const authBody = await fetchJson('/api/v1/auth/paper', {
       method: 'POST',
       credentials: 'include',
       headers: { 'Content-Type': 'application/json' },
       body: JSON.stringify({ token: paperToken.value }),
     })
-    paperAuthenticated.value = true
+    paperAuthenticated.value = Boolean(authBody.authenticated)
+    paperAuthMode.value = authBody.mode || 'token'
+    paperAuthEnabled.value = authBody.enabled !== false
+    paperAuthWarning.value = authBody.warning || ''
     paperToken.value = ''
     notice.value = 'Paper ledger unlocked for this browser session.'
   } catch (caught) {
@@ -201,6 +298,7 @@ onMounted(loadDashboard)
 
       <nav class="nav-stack" aria-label="Primary navigation">
         <a class="nav-item active" href="#overview"><span class="nav-glyph">◈</span>Overview</a>
+        <a class="nav-item" href="#stocks"><span class="nav-glyph">▤</span>Stock board</a>
         <a class="nav-item" href="#signals"><span class="nav-glyph">↗</span>Signal board</a>
         <a class="nav-item" href="#factors"><span class="nav-glyph">∿</span>Factor explorer</a>
         <a class="nav-item" href="#lineage"><span class="nav-glyph">⌁</span>Data lineage</a>
@@ -254,16 +352,62 @@ onMounted(loadDashboard)
           </article>
           <article class="kpi-card">
             <div class="kpi-label">Data quality</div>
-            <div class="kpi-value quality-value">{{ summary.data_health.status }}</div>
+            <div class="kpi-value quality-value">{{ displayLabel(summary.data_health.status) }}</div>
             <div class="kpi-foot">Vintage {{ summary.data_health.vintage_id }}</div>
           </article>
           <article class="kpi-card">
             <div class="kpi-label">Backtest gate</div>
-            <div class="kpi-value quality-value">{{ backtest?.status || '—' }}</div>
+            <div class="kpi-value quality-value">{{ displayLabel(backtest?.status) }}</div>
-            <div class="kpi-foot">{{ backtest?.available_events || 0 }} / {{ backtest?.required_events || 0 }} vintages · {{ backtest?.price_snapshot?.quality || 'price snapshot missing' }}</div>
+            <div class="kpi-foot">{{ backtest?.available_events || 0 }} / {{ backtest?.required_events || 0 }} vintages · {{ displayLabel(backtest?.price_snapshot?.quality) || 'price snapshot missing' }}</div>
           </article>
         </section>
 
+        <section class="panel stock-panel" id="stocks">
+          <div class="panel-header signal-header">
+            <div>
+              <div class="section-kicker">Alternative factors × SET50</div>
+              <h2>Stock board</h2>
+              <p class="panel-subtitle">Fundamentals from Siamchart merged with the tourism signal. Click a column header to sort; toggle <em>dividend only</em> to view dividend payers.</p>
+            </div>
+            <div class="stock-controls">
+              <label class="toggle-filter">
+                <input type="checkbox" v-model="dividendOnly" />
+                <span>Dividend only ({{ dividendCount }})</span>
+              </label>
+              <span class="status-tag" :class="factorAvailable ? '' : 'warning-tag'">{{ factorAvailable ? 'Siamchart live' : 'factors unavailable' }}</span>
+            </div>
+          </div>
+          <div v-if="!factorAvailable" class="empty-research">Siamchart factor snapshot is not available on disk. Run <code>collect_siamchart.py --group SET50 --with-info</code> to collect it.</div>
+          <div v-else class="table-wrap">
+            <table class="factor-table">
+              <thead>
+                <tr>
+                  <th class="sortable" :class="{ active: sortKey === 'signal_score' }" @click="setSort('signal_score')">Signal {{ sortIndicator('signal_score') }}</th>
+                  <th class="sortable" :class="{ active: sortKey === 'symbol' }" @click="setSort('symbol')">Symbol {{ sortIndicator('symbol') }}</th>
+                  <th class="sortable" :class="{ active: sortKey === 'pe' }" @click="setSort('pe')">P/E {{ sortIndicator('pe') }}</th>
+                  <th class="sortable" :class="{ active: sortKey === 'eps' }" @click="setSort('eps')">EPS {{ sortIndicator('eps') }}</th>
+                  <th class="sortable" :class="{ active: sortKey === 'eps_growth_yoy' }" @click="setSort('eps_growth_yoy')">EPS YoY {{ sortIndicator('eps_growth_yoy') }}</th>
+                  <th class="sortable" :class="{ active: sortKey === 'dividend_yield' }" @click="setSort('dividend_yield')">Yield % {{ sortIndicator('dividend_yield') }}</th>
+                  <th class="sortable" :class="{ active: sortKey === 'pbv' }" @click="setSort('pbv')">P/BV {{ sortIndicator('pbv') }}</th>
+                  <th class="sortable" :class="{ active: sortKey === 'roe' }" @click="setSort('roe')">ROE {{ sortIndicator('roe') }}</th>
+                </tr>
+              </thead>
+              <tbody>
+                <tr v-for="factor in sortedFactorRows" :key="factor.symbol">
+                  <td><span v-if="factor.signal_side" class="side-pill" :class="factor.signal_side.toLowerCase()">{{ factor.signal_side }}</span><span v-else class="muted-cell">—</span></td>
+                  <td><strong class="symbol-name">{{ factor.symbol }}</strong></td>
+                  <td class="score-cell">{{ factor.pe != null ? formatNumber(factor.pe) : '—' }}</td>
+                  <td>{{ factor.eps != null ? formatNumber(factor.eps) : '—' }}</td>
+                  <td :class="factor.eps_growth_yoy >= 0 ? 'positive-text' : 'negative-text'">{{ factor.eps_growth_yoy != null ? (factor.eps_growth_yoy >= 0 ? '+' : '') + formatNumber(factor.eps_growth_yoy) + '%' : '—' }}</td>
+                  <td :class="factor.dividend_yield >= 0 ? 'positive-text' : ''">{{ factor.dividend_yield != null ? formatNumber(factor.dividend_yield) + '%' : '—' }}<span v-if="factor.is_dividend" class="dividend-dot" title="Pays dividend">●</span></td>
+                  <td>{{ factor.pbv != null ? formatNumber(factor.pbv) : '—' }}</td>
+                  <td :class="factor.roe >= 0 ? 'positive-text' : 'negative-text'">{{ factor.roe != null ? formatNumber(factor.roe) + '%' : '—' }}</td>
+                </tr>
+              </tbody>
+            </table>
+          </div>
+        </section>
+
         <section class="hero-grid" id="factors">
           <article class="panel pulse-panel">
             <div class="panel-header">
@@ -292,7 +436,7 @@ onMounted(loadDashboard)
                 <div class="section-kicker">02 / Provenance</div>
                 <h2>Can we trust the input?</h2>
               </div>
-              <span class="status-tag" :class="summary.data_health.status === 'high' ? '' : 'warning-tag'">{{ summary.data_health.status }}</span>
+              <span class="status-tag" :class="summary.data_health.status === 'high' ? '' : 'warning-tag'">{{ displayLabel(summary.data_health.status) }}</span>
             </div>
             <div class="lineage-list">
               <div class="lineage-item"><span>Source</span><strong>{{ summary.data_health.source_id }}</strong></div>
@@ -339,19 +483,19 @@ onMounted(loadDashboard)
           <div class="panel-header">
             <div>
               <div class="section-kicker">04 / Frozen research run</div>
-              <h2>Can the evidence support a study?</h2>
+              <h2>Can the evidence support a descriptive study?</h2>
             </div>
-            <button class="primary-button" :disabled="researchRunning" @click="runResearch">{{ researchRunning ? 'Running…' : 'Run research check' }}</button>
+            <button class="primary-button" :disabled="researchRunning" @click="runResearch">{{ researchRunning ? 'Running…' : 'Run exploratory study' }}</button>
           </div>
           <div v-if="researchRun" class="research-grid">
             <div>
-              <div class="research-status" :class="researchRun.status === 'ready' ? 'status-ready' : 'status-blocked'">{{ researchRun.status }}</div>
+              <div class="research-status" :class="researchRun.result_scope === 'non_pit_descriptive_only' ? 'status-descriptive' : researchRun.status === 'ready' ? 'status-ready' : 'status-blocked'">{{ researchRun.result_scope === 'non_pit_descriptive_only' ? 'descriptive only' : displayLabel(researchRun.status) }}</div>
               <div class="research-reason">{{ researchReason(researchRun) }}</div>
-              <div class="research-meta">Run {{ researchRun.run_id }} · {{ formatDate(researchRun.generated_at) }}</div>
+              <div class="research-meta">Run {{ researchRun.run_id }} · {{ formatDate(researchRun.generated_at) }} · {{ displayLabel(researchRun.result_scope) }}</div>
             </div>
             <div class="gate-list">
-              <div class="gate-row"><span>Independent vintages</span><strong>{{ researchRun.gates.vintages.available_events }} / {{ researchRun.gates.vintages.required_events }} · {{ researchRun.gates.vintages.status }}</strong></div>
+              <div class="gate-row"><span>Independent vintages</span><strong>{{ researchRun.gates.vintages.available_events }} / {{ researchRun.gates.vintages.required_events }} · {{ displayLabel(researchRun.gates.vintages.status) }}</strong></div>
-              <div class="gate-row"><span>Price source</span><strong>{{ researchRun.gates.prices.quality || 'missing' }} · {{ researchRun.gates.prices.status }}</strong></div>
+              <div class="gate-row"><span>Price source</span><strong>{{ displayLabel(researchRun.gates.prices.quality) || 'missing' }} · {{ displayLabel(researchRun.gates.prices.status) }}</strong></div>
             </div>
           </div>
           <div v-if="researchRun?.result?.windows" class="research-results">
@@ -377,13 +521,15 @@ onMounted(loadDashboard)
               <span class="status-tag neutral-tag">Internal only</span>
             </div>
             <p>Record an assumed fill to test portfolio behavior. This does not send a webhook or order.</p>
+            <div v-if="paperAuthWarning" class="paper-auth-warning">{{ paperAuthWarning }}</div>
             <div v-if="notice" class="notice" :class="notice.includes('recorded') || notice.includes('unlocked') ? 'notice-success' : 'notice-error'">{{ notice }}</div>
-            <div v-if="!paperAuthenticated" class="auth-form">
+            <div v-if="!paperAuthenticated && paperAuthMode === 'token' && paperAuthEnabled" class="auth-form">
               <div class="auth-copy">Paper writes are locked. Enter the local operator token; it is used only to create an HttpOnly session.</div>
               <input v-model="paperToken" type="password" autocomplete="current-password" placeholder="Paper-session token" aria-label="Paper-session token" />
               <button class="primary-button" :disabled="unlocking" @click="unlockPaper">{{ unlocking ? 'Unlocking…' : 'Unlock paper ledger' }}</button>
             </div>
-            <div v-else-if="selectedSignal" class="entry-form">
+            <div v-else-if="!paperAuthenticated && paperAuthMode === 'token' && !paperAuthEnabled" class="empty-ledger">Paper writes are disabled by the server configuration.</div>
+            <div v-else-if="paperAuthenticated && selectedSignal" class="entry-form">
               <div class="selected-entry"><strong>{{ selectedSignal.symbol }}</strong><span>{{ selectedSignal.side }} · target {{ (selectedSignal.target_weight * 100).toFixed(1) }}%</span></div>
               <input v-model="assumedPrice" type="number" min="0.01" step="0.01" placeholder="Assumed fill price" aria-label="Assumed fill price" />
               <button class="primary-button" :disabled="submitting" @click="recordPaperEntry">{{ submitting ? 'Recording…' : 'Record paper entry' }}</button>

frontend/src/style.css

@@ -112,11 +112,25 @@ tbody tr:hover { background: rgba(255,255,255,.025); }
 .row-action, .primary-button { padding: 8px 10px; border: 1px solid var(--line-bright); border-radius: 5px; color: var(--text); background: transparent; font-size: 10px; white-space: nowrap; transition: .2s ease; }
 .row-action:hover { color: var(--mint); border-color: var(--mint); }
 
+/* Stock board (alternative factor × signal merged table) */
+.stock-panel { padding: 0; overflow: hidden; margin-bottom: 12px; }
+.panel-subtitle { margin-top: 10px; color: var(--faint); font-size: 11px; line-height: 1.6; }
+.panel-subtitle em { color: var(--mint); font-style: normal; }
+.stock-controls { display: flex; align-items: center; gap: 14px; }
+.toggle-filter { display: inline-flex; align-items: center; gap: 8px; color: var(--muted); font: 10px 'DM Mono', monospace; cursor: pointer; user-select: none; }
+.toggle-filter input { width: auto; accent-color: var(--mint); }
+.toggle-filter span { white-space: nowrap; }
+.dividend-dot { margin-left: 6px; color: var(--amber); }
+th.sortable { cursor: pointer; transition: color .15s ease; }
+th.sortable:hover { color: var(--text); }
+th.sortable.active { color: var(--mint); }
+
 .research-panel { margin-bottom: 12px; }
 .research-grid { display: grid; grid-template-columns: 1fr 1.4fr; gap: 24px; align-items: center; margin-top: 22px; }
 .research-status { display: inline-block; padding: 7px 9px; border-radius: 5px; font: 11px 'DM Mono', monospace; text-transform: uppercase; }
 .status-ready { color: var(--mint); background: var(--mint-soft); }
 .status-blocked { color: var(--amber); background: var(--amber-soft); }
+.status-descriptive { color: var(--amber); background: var(--amber-soft); }
 .research-reason { margin-top: 12px; color: var(--muted); font-size: 12px; }
 .research-meta { margin-top: 10px; color: var(--faint); font: 9px 'DM Mono', monospace; overflow-wrap: anywhere; }
 .gate-list { display: grid; gap: 0; border-top: 1px solid var(--line); }
@@ -136,6 +150,7 @@ tbody tr:hover { background: rgba(255,255,255,.025); }
 .neutral-tag { color: var(--amber); border-color: rgba(230,185,108,.25); background: var(--amber-soft); }
 .auth-form { display: grid; gap: 10px; margin-top: 16px; }
 .auth-copy { color: var(--muted); font-size: 11px; line-height: 1.65; }
+.paper-auth-warning { margin-top: 14px; padding: 9px 10px; border: 1px solid rgba(230,185,108,.3); border-radius: 5px; color: var(--amber); background: var(--amber-soft); font: 10px 'DM Mono', monospace; line-height: 1.55; }
 .entry-form { display: grid; gap: 10px; margin-top: 16px; }
 .selected-entry { display: flex; justify-content: space-between; gap: 12px; align-items: center; color: var(--muted); font: 10px 'DM Mono', monospace; }
 .selected-entry strong { color: var(--text); font-size: 13px; }