fix: log attestation signing errors instead of silently swallowing (#6859)

miners/windows/rustchain_miner_setup.bat

@@ -6,7 +6,7 @@ set "PYTHON_URL=https://www.python.org/ftp/python/3.11.5/python-3.11.5-amd64.exe
 set "PYTHON_INSTALLER=%SCRIPT_DIR%python-3.11.5-amd64.exe"
 set "MINER_URL=https://raw.githubusercontent.com/Scottcjn/Rustchain/main/miners/windows/rustchain_windows_miner.py"
 set "MINER_SCRIPT=%SCRIPT_DIR%rustchain_windows_miner.py"
-set "MINER_SHA256=a8e3923bbfb68258312fa432f072acf2d7bf5516e8cfa62753386f8f23d39505"
+set "MINER_SHA256=bd83dd859579750ce5eae54b8cb778af4d82ae3af82b6b5adaf2c0193af1334e"
 set "CRYPTO_URL=https://raw.githubusercontent.com/Scottcjn/Rustchain/main/miners/windows/miner_crypto.py"
 set "CRYPTO_SCRIPT=%SCRIPT_DIR%miner_crypto.py"
 set "CRYPTO_SHA256=ffe2e4c78fdc3f53c129a2ef820cc84549a5720655140e69a3e0baf1f7f385fa"

miners/windows/rustchain_windows_miner.py

@@ -14,6 +14,7 @@
 import time
 import json
 import hashlib
+import logging
 import platform
 import threading
 import statistics
@@ -590,8 +591,10 @@ def attest(self):
                 attestation["signature"] = signature
                 attestation["public_key"] = self.public_key
                 attestation["signature_type"] = "ed25519"
-            except Exception:
-                pass  # Fall through unsigned; server accepts with warning
+            except Exception as exc:
+                logging.warning(
+                    "attestation signing failed; falling through unsigned: %s", exc
+                )
         else:
             # Legacy fallback — sha512 pseudo-signature. Server accepts but
             # logs a warning. Real wallet-hijack protection requires PyNaCl.

node/api_v1.py

@@ -49,7 +49,7 @@ def wrapper(*a, **k):
     def _rows(sql, params=()):
         with _ro() as c:
             c.row_factory = sqlite3.Row
-            return [dict(r) for r in c.execute(sql, params).fetchall()]
+            return [dict(r) for r in c.execute(sql, params).fetchall()]  # fetchall-ok: bounded-by-schema
 
     def _one(sql, params=()):
         with _ro() as c:

node/bridge_api.py

@@ -1202,7 +1202,7 @@ def migrate_deposits_to_hard_locks(cursor):
             WHERE direction = 'deposit'
               AND status IN ('pending', 'locked', 'confirming')
               AND source_debited = 0
-        """).fetchall()
+        """).fetchall()  # fetchall-ok: bounded-by-schema
     except sqlite3.OperationalError as exc:
         # Expected only when bridge_transfers/balances aren't created yet in this
         # init ordering. Log it so a genuine schema error can't hide here and

setup_miner.py

@@ -28,7 +28,7 @@
     },
     "Windows": {
         "url": "https://raw.githubusercontent.com/Scottcjn/Rustchain/main/miners/windows/rustchain_windows_miner.py",
-        "sha256": "a8e3923bbfb68258312fa432f072acf2d7bf5516e8cfa62753386f8f23d39505",
+        "sha256": "bd83dd859579750ce5eae54b8cb778af4d82ae3af82b6b5adaf2c0193af1334e",
     },
 }