tools: SAND .wbt + game-data extraction scripts

Python tooling for decoding walker saves and mining game data:
sand.py / build_wbt.py / walker_hashes.py / harvest_hashes.py (.wbt
codec + hashes), extract_*/loot_probe/odin_read/unitybundle (asset
parsing), make_*_wiki + render_wiki (wiki generation), recover_key.
Paths point at the local extracted/, wiki/, and Walkers symlink.

dump_loot_bytes.py

@@ -0,0 +1,47 @@
+#!/usr/bin/env python3
+"""Dump the raw Odin SerializedBytes for the two LootTablesConfig assets, and do a
+first-pass analysis: hexdump head, and list ASCII strings (>=3 chars) found."""
+import os, sys, json, re, UnityPy
+from UnityPy.helpers.TypeTreeGenerator import TypeTreeGenerator
+
+GAME = "/mnt/d/SteamLibrary/steamapps/common/Sand Playtest"
+BD = os.path.join(GAME, "Sand_Data/StreamingAssets/aa/StandaloneWindows64")
+META = os.path.join(GAME, "Sand_Data/il2cpp_data/Metadata/global-metadata.dat")
+DLL = os.path.join(GAME, "GameAssembly.dll")
+OUT = "/home/downloadpizza/sand_tools/extracted"
+
+gen = TypeTreeGenerator("6000.0.40f1")
+gen.load_il2cpp(open(DLL, "rb").read(), open(META, "rb").read())
+env = UnityPy.load(os.path.join(BD, "configuration_assets_all.bundle"),
+                   os.path.join(BD, "sand_monoscripts.bundle"))
+
+for o in env.objects:
+    if o.type.name != "MonoBehaviour":
+        continue
+    try:
+        d = o.read(); nm = getattr(d, "m_Name", "") or ""
+    except Exception:
+        continue
+    if "LootTables" not in nm:
+        continue
+    script = d.m_Script.read()
+    full = (script.m_Namespace + "." if script.m_Namespace else "") + script.m_ClassName
+    nodes = json.loads(gen.get_nodes_as_json(script.m_AssemblyName, full))
+    tree = o.read_typetree(nodes)
+    sb = tree["serializationData"]["SerializedBytes"]
+    data = bytes(sb)
+    out_bin = os.path.join(OUT, f"{nm}.odin.bin")
+    open(out_bin, "wb").write(data)
+    print(f"\n=== {nm}: {len(data)} bytes -> {out_bin}")
+    print("head hex:", data[:64].hex())
+    # ascii strings
+    strings = re.findall(rb"[\x20-\x7e]{3,}", data)
+    uniq = []
+    seen = set()
+    for s in strings:
+        t = s.decode()
+        if t not in seen:
+            seen.add(t); uniq.append(t)
+    print(f"{len(strings)} ascii runs, {len(uniq)} unique. First 60 unique:")
+    for t in uniq[:60]:
+        print("   ", repr(t))