Fix stale blacklist chain_ids, add stale-blacklist warning to sync script

Root cause of the balances-test hang in pezkuwi-wallet-android (silent
for over an hour, cancelled multiple times before finding this):
every single chain_id in blocked-chains.json was stale - none matched
anything in Nova's current chains.json (last_updated 2026-02-11, ~5
months of upstream chain-id drift since). The blacklist mechanism
silently no-opped for all 6 entries, so none of the chains it was
meant to exclude were actually excluded.

With the blacklist ineffective, several chains with genuinely dead RPC
endpoints (confirmed live 2026-07-08: 3DPass, Curio, Quartz, Subsocial
- 502s, timeouts, SSL failures) stayed in the merged output. The
Android app's ChainConnection/NodeAutobalancer has no backoff/circuit
breaker for dead endpoints, so it retried them in an extremely tight
loop (~1 attempt/second, 1500-1800+ attempts observed in a 25 minute
window per chain) - burning resources indefinitely and starving the
app's actual chain-sync/test work, which is what made the Android CI
job hang for over an hour with zero progress.

Fix: re-verified and corrected all chain_ids (matching by current
name against live chains.json), added 3DPass/Curio/Subsocial which
weren't blacklisted before, dropped entries for chains no longer
present upstream at all (Passet Hub Testnet, Darwinia Crab, DeepBrain,
Exosama - nothing to block, kept them as historical noise otherwise).

Also added a stale-blacklist warning to sync_from_nova.py: it now
tracks which blocked chain_ids actually matched something in Nova's
current chains across all versions, and prints a warning listing any
that didn't - so this exact silent drift is caught at sync time going
forward instead of rotting unnoticed for another five months.

chains/v2/chains_dev.json

@@ -1996,58 +1996,6 @@
     "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/white/Calamari.svg",
     "addressPrefix": 78
   },
-  {
-    "chainId": "cd4d732201ebe5d6b014edda071c4203e16867305332301dc8d092044b28e554",
-    "parentId": "b0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe",
-    "name": "QUARTZ",
-    "assets": [
-      {
-        "assetId": 0,
-        "symbol": "QTZ",
-        "priceId": "quartz",
-        "precision": 18
-      }
-    ],
-    "nodes": [
-      {
-        "url": "wss://quartz.unique.network",
-        "name": "Unique node"
-      },
-      {
-        "url": "wss://eu-ws-quartz.unique.network",
-        "name": "Unique Europe node"
-      },
-      {
-        "url": "wss://us-ws-quartz.unique.network",
-        "name": "Unique US node"
-      }
-    ],
-    "types": {
-      "url": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/chains/v2/types/quartz.json",
-      "overridesCommon": true
-    },
-    "explorers": [
-      {
-        "name": "Subscan",
-        "extrinsic": "https://quartz.subscan.io/extrinsic/{hash}",
-        "account": "https://quartz.subscan.io/account/{address}",
-        "event": null
-      },
-      {
-        "name": "Sub.ID",
-        "account": "https://sub.id/{address}"
-      }
-    ],
-    "externalApi": {
-      "history": {
-        "type": "subquery",
-        "url": "https://api.subquery.network/sq/nova-wallet/nova-wallet-quartz__bm92Y"
-      }
-    },
-    "color": "linear-gradient(315deg, #CB2E41 0%, #ED5B6D 100%)",
-    "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/white/Quartz.svg",
-    "addressPrefix": 255
-  },
   {
     "chainId": "f22b7850cdd5a7657bbfd90ac86441275bbc57ace3d2698a740c7b0ec4de5ec3",
     "parentId": "b0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe",
@@ -2746,44 +2694,6 @@
     "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/white/Crab.svg",
     "addressPrefix": 42
   },
-  {
-    "chainId": "4a12be580bb959937a1c7a61d5cf24428ed67fa571974b4007645d1886e7c89f",
-    "parentId": "b0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe",
-    "name": "Subsocial Parachain",
-    "assets": [
-      {
-        "assetId": 0,
-        "symbol": "SUB",
-        "precision": 11,
-        "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/white/Subsocial.svg"
-      }
-    ],
-    "nodes": [
-      {
-        "url": "wss://para.subsocial.network",
-        "name": "Dappforce node"
-      }
-    ],
-    "explorers": [
-      {
-        "name": "Sub.ID",
-        "account": "https://sub.id/{address}"
-      }
-    ],
-    "types": {
-      "url": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/chains/v2/types/subsocial.json",
-      "overridesCommon": true
-    },
-    "externalApi": {
-      "history": {
-        "type": "subquery",
-        "url": "https://api.subquery.network/sq/nova-wallet/nova-wallet-subsocial__bm92Y"
-      }
-    },
-    "color": "linear-gradient(315deg, #0C0011 0%, #681391 75%, #3F3F3F 75.01%)",
-    "icon": "https://raw.githubusercontent.com/novasamatech/nova-utils/master/icons/chains/white/Subsocial.svg",
-    "addressPrefix": 28
-  },
   {
     "chainId": "d4c0c08ca49dc7c680c3dac71a7c0703e5b222f4b6c03fe4c5219bb8f22c18dc",
     "parentId": "b0a8d493285c2df73290dfb7e61f870f17b41801197a149ca93654499ea3dafe",