fix: some validation for filecoin deal info

package.json

@@ -28,6 +28,7 @@
     "@ipld/dag-json": "^10.1.5",
     "@ucanto/validator": "^9.0.0",
     "@web3-storage/access": "^17.1.0",
+    "@web3-storage/data-segment": "^5.0.0",
     "@web3-storage/w3up-client": "^11.0.0",
     "adventure": "^2.11.1",
     "execa": "^8.0.1",

problems/7-commp/index.js

@@ -28,10 +28,38 @@ export const verify = (args, cb) => {
       return console.error(`Failed to parse deal info: ${err.message}`)
     }
 
+    if (!info.piece) {
+      cb(false)
+      return console.error(`Invalid deal info: missing piece`)
+    }
+    if (!Array.isArray(info.deals)) {
+      cb(false)
+      return console.error(`Invalid deal info: non-array deals`)
+    }
+
     console.log(`\n           Piece: ${info.piece}\n`)
     for (const deal of info.deals) {
+      if (!deal || typeof deal !== 'object') {
+        cb(false)
+        return console.error(`Invalid deal info: non-object deal`)
+      }
+
+      if (!deal.provider) {
+        cb(false)
+        return console.error(`Invalid deal info: missing provider`)
+      }
       console.log(`Storage Provider: f0${deal.provider}`)
+
+      if (!deal.aggregate) {
+        cb(false)
+        return console.error(`Invalid deal info: missing aggregate CID`)
+      }
       console.log(`       Aggregate: ${deal.aggregate}`)
+
+      if (!deal.aux?.dataSource?.dealID) {
+        cb(false)
+        return console.error(`Invalid deal info: missing deal ID`)
+      }
       console.log(`         Deal ID: ${deal.aux.dataSource.dealID}\n`)
     }