malkhut(assets)+uv: system-wide asset directory + UV universe init

MALKHUT asset directory (malkhut/assets/): normalized canonical symbols,
KNOWN_EXCHANGES aux table (BINANCE/BINGX/BINGX_VST), per-exchange listing
status (TRADING/OFFLINE/UNKNOWN), JSON-backed, built for full-Binance-500
scale. Seeded with BLUE's NG7 feed universe (50 symbols) + live VST
contracts probe: 35 TRADING / 15 OFFLINE on VST (BAND, CELR, COS, CVC,
DENT, FUN, HOT, ICX, TFUEL, TUSD, USDC, WAN, WIN, XTZ, ZIL).
uv_asset_universe.init_asset_universe() = runtime tradable set for the
execution exchange; --onboard runs MALKHUT AssetCompiler for full taxonomy.
12 new tests, mutation-RED verified (status-filter + tradability guard).

MALKHUT/malkhut/assets/__init__.py

@@ -0,0 +1,17 @@
+from malkhut.assets.directory import (
+    KNOWN_EXCHANGES,
+    AssetDirectory,
+    AssetRecord,
+    ExchangeListing,
+    ListingStatus,
+    normalize_symbol,
+)
+
+__all__ = [
+    "KNOWN_EXCHANGES",
+    "AssetDirectory",
+    "AssetRecord",
+    "ExchangeListing",
+    "ListingStatus",
+    "normalize_symbol",
+]

MALKHUT/malkhut/assets/directory.py

@@ -0,0 +1,206 @@
+"""
+MALKHUT Asset Directory — the system-wide known-asset universe store.
+
+This is the normalization layer UNDER the rich MALKHUT taxonomy
+(`training/asset_classification.AssetProfile`): a record here says an asset
+EXISTS, what its canonical symbol is, and WHICH exchanges list it — nothing
+more. Most taxonomy fields stay empty until the AssetCompiler (or a human)
+fills them; a record may link to a full AssetProfile when one exists.
+
+Design (operator directive 2026-07-11):
+  - MALKHUT's asset store is the overall system asset store (BLUE / VIOLET /
+    UV consume it) — multi-exchange operation is the destination.
+  - `KNOWN_EXCHANGES` is the aux "known exchanges" table.
+  - Per-exchange listing carries the venue-local symbol and a TRADING /
+    OFFLINE / UNKNOWN status, so an execution layer can ask
+    `symbols_for_exchange("BINGX_VST")` and never submit a dead symbol.
+  - Storage is a JSON file (versioned, language-agnostic, GraalVM-safe,
+    no DB dependency). Path via $MALKHUT_ASSET_DIR_PATH or package-local
+    `asset_directory.json`.
+
+Canonical symbol normalization: venue variants ("BAND-USDT", "band_usdt",
+"BANDUSDT") all normalize to "BANDUSDT" (uppercase, separators stripped).
+"""
+from __future__ import annotations
+
+import json
+import os
+from dataclasses import dataclass, field, asdict
+from pathlib import Path
+from typing import Dict, Iterable, List, Optional
+
+SCHEMA_VERSION = 1
+
+# ─── Known exchanges (aux table) ───────────────────────────────────────────
+# key → human description. BINGX_VST is deliberately separate from BINGX:
+# the testnet universe differs from live (observed 2026-07-11: BAND/CELR
+# offline on VST while live on Binance).
+KNOWN_EXCHANGES: Dict[str, str] = {
+    "BINANCE": "Binance USDT-M futures/spot (DOLPHIN NG7 scan-feed universe)",
+    "BINGX": "BingX perpetual swap, live",
+    "BINGX_VST": "BingX perpetual swap, VST demo/testnet",
+}
+
+_STATUSES = ("TRADING", "OFFLINE", "UNKNOWN")
+
+
+class ListingStatus:
+    TRADING = "TRADING"
+    OFFLINE = "OFFLINE"
+    UNKNOWN = "UNKNOWN"
+
+
+def normalize_symbol(symbol: str) -> str:
+    """Canonical form: uppercase, separators stripped. 'BAND-USDT' -> 'BANDUSDT'."""
+    return symbol.replace("-", "").replace("_", "").replace("/", "").strip().upper()
+
+
+@dataclass
+class ExchangeListing:
+    venue_symbol: str                     # symbol as the venue spells it
+    status: str = ListingStatus.UNKNOWN   # TRADING / OFFLINE / UNKNOWN
+    last_checked: str = ""                # ISO-8601 UTC, "" = never verified
+    source: str = ""                      # who asserted this (feed, API probe, human)
+
+    def __post_init__(self) -> None:
+        if self.status not in _STATUSES:
+            raise ValueError(f"unknown listing status {self.status!r}; use {_STATUSES}")
+
+
+@dataclass
+class AssetRecord:
+    symbol: str                                        # canonical (normalized)
+    base: str = ""                                     # e.g. BAND
+    quote: str = ""                                    # e.g. USDT
+    exchanges: Dict[str, ExchangeListing] = field(default_factory=dict)
+    profile_ref: str = ""                              # key into ASSET_PROFILES when taxonomy exists
+    notes: str = ""
+
+    def listed_on(self, exchange: str) -> bool:
+        lst = self.exchanges.get(exchange)
+        return lst is not None and lst.status == ListingStatus.TRADING
+
+
+def _default_path() -> Path:
+    env = os.environ.get("MALKHUT_ASSET_DIR_PATH", "")
+    if env:
+        return Path(env)
+    return Path(__file__).resolve().parent / "asset_directory.json"
+
+
+class AssetDirectory:
+    """Load / mutate / persist the asset universe. All symbols canonical."""
+
+    def __init__(self, path: Optional[Path] = None) -> None:
+        self.path = Path(path) if path else _default_path()
+        self.records: Dict[str, AssetRecord] = {}
+        if self.path.exists():
+            self.load()
+
+    # ── persistence ───────────────────────────────────────────────────
+    def load(self) -> None:
+        raw = json.loads(self.path.read_text(encoding="utf-8"))
+        self.records = {}
+        for sym, rec in raw.get("assets", {}).items():
+            exchanges = {
+                ex: ExchangeListing(**lst) for ex, lst in rec.get("exchanges", {}).items()
+            }
+            self.records[sym] = AssetRecord(
+                symbol=sym,
+                base=rec.get("base", ""),
+                quote=rec.get("quote", ""),
+                exchanges=exchanges,
+                profile_ref=rec.get("profile_ref", ""),
+                notes=rec.get("notes", ""),
+            )
+
+    def save(self) -> None:
+        payload = {
+            "schema_version": SCHEMA_VERSION,
+            "known_exchanges": KNOWN_EXCHANGES,
+            "assets": {
+                sym: {
+                    "base": r.base,
+                    "quote": r.quote,
+                    "exchanges": {ex: asdict(l) for ex, l in sorted(r.exchanges.items())},
+                    "profile_ref": r.profile_ref,
+                    "notes": r.notes,
+                }
+                for sym, r in sorted(self.records.items())
+            },
+        }
+        tmp = self.path.with_suffix(".json.tmp")
+        tmp.write_text(json.dumps(payload, indent=1, sort_keys=True), encoding="utf-8")
+        tmp.replace(self.path)
+
+    # ── mutation ──────────────────────────────────────────────────────
+    def upsert(self, symbol: str, *, base: str = "", quote: str = "") -> AssetRecord:
+        sym = normalize_symbol(symbol)
+        rec = self.records.get(sym)
+        if rec is None:
+            if not base and not quote and sym.endswith("USDT"):
+                base, quote = sym[:-4], "USDT"
+            rec = AssetRecord(symbol=sym, base=base, quote=quote)
+            self.records[sym] = rec
+        return rec
+
+    def set_listing(
+        self,
+        symbol: str,
+        exchange: str,
+        *,
+        venue_symbol: str = "",
+        status: str = ListingStatus.UNKNOWN,
+        checked_at: str = "",
+        source: str = "",
+    ) -> None:
+        if exchange not in KNOWN_EXCHANGES:
+            raise ValueError(
+                f"unknown exchange {exchange!r}; add it to KNOWN_EXCHANGES first"
+            )
+        rec = self.upsert(symbol)
+        rec.exchanges[exchange] = ExchangeListing(
+            venue_symbol=venue_symbol or rec.symbol,
+            status=status,
+            last_checked=checked_at,
+            source=source,
+        )
+
+    def import_symbols(
+        self, symbols: Iterable[str], exchange: str, *,
+        status: str = ListingStatus.TRADING, checked_at: str = "", source: str = "",
+    ) -> int:
+        """Bulk-import a symbol list as listings on one exchange. Idempotent."""
+        n = 0
+        for s in symbols:
+            self.set_listing(
+                s, exchange, venue_symbol=s, status=status,
+                checked_at=checked_at, source=source,
+            )
+            n += 1
+        return n
+
+    # ── queries ───────────────────────────────────────────────────────
+    def symbols_for_exchange(
+        self, exchange: str, *, status: str = ListingStatus.TRADING
+    ) -> List[str]:
+        if exchange not in KNOWN_EXCHANGES:
+            raise ValueError(f"unknown exchange {exchange!r}")
+        return sorted(
+            sym for sym, r in self.records.items()
+            if (l := r.exchanges.get(exchange)) is not None and l.status == status
+        )
+
+    def venue_symbol(self, symbol: str, exchange: str) -> str:
+        """Venue-local spelling for a canonical symbol ('' if unlisted)."""
+        rec = self.records.get(normalize_symbol(symbol))
+        if rec is None:
+            return ""
+        lst = rec.exchanges.get(exchange)
+        return lst.venue_symbol if lst else ""
+
+    def get(self, symbol: str) -> Optional[AssetRecord]:
+        return self.records.get(normalize_symbol(symbol))
+
+    def __len__(self) -> int:
+        return len(self.records)