chore: add comments back to Challenge struct.

See #1284
and https://github.com/TecharoHQ/anubis/pull/1284#issuecomment-3784096905

.github/actions/spelling/expect.txt

@@ -64,6 +64,7 @@ ckie
 cloudflare
 Codespaces
 confd
+connnection
 containerbuild
 containerregistry
 coreutils
@@ -242,7 +243,6 @@ oci
 OCOB
 ogtag
 oklch
-oldstable
 omgili
 omgilibot
 openai
@@ -257,7 +257,6 @@ Pangu
 parseable
 passthrough
 Patreon
-perplexitybot
 pgrep
 phrik
 pidfile

.github/workflows/go.yml

@@ -12,11 +12,6 @@ permissions:
 
 jobs:
   go_tests:
-    strategy:
-      matrix:
-        go_version:
-          - oldstable
-          - stable
     #runs-on: alrest-techarohq
     runs-on: ubuntu-24.04
     steps:
@@ -31,11 +26,10 @@ jobs:
 
       - uses: actions/setup-node@395ad3262231945c25e8478fd5baf05154b1d79f # v6.1.0
         with:
-          node-version: "latest"
-
+          node-version: '24.11.0'
       - uses: actions/setup-go@4dc6199c7b1a012772edbd06daecab0f50c9053c # v6.1.0
         with:
-          go-version: ${{ matrix.go_version }}
+          go-version: '1.25.4'
 
       - name: Cache playwright binaries
         uses: actions/cache@9255dc7a253b0ccc959486e2bca901246202afeb # v5.0.1

lib/challenge/challenge.go

@@ -4,12 +4,12 @@ import "time"
 
 // Challenge is the metadata about a single challenge issuance.
 type Challenge struct {
-	IssuedAt       time.Time         `json:"issuedAt"`
-	Metadata       map[string]string `json:"metadata"`
-	ID             string            `json:"id"`
-	Method         string            `json:"method"`
-	RandomData     string            `json:"randomData"`
-	PolicyRuleHash string            `json:"policyRuleHash,omitempty"`
-	Difficulty     int               `json:"difficulty,omitempty"`
-	Spent          bool              `json:"spent"`
+	IssuedAt       time.Time         `json:"issuedAt"`                 // When the challenge was issued
+	Metadata       map[string]string `json:"metadata"`                 // Challenge metadata such as IP address and user agent
+	ID             string            `json:"id"`                       // UUID identifying the challenge
+	Method         string            `json:"method"`                   // Challenge method
+	RandomData     string            `json:"randomData"`               // The random data the client processes
+	PolicyRuleHash string            `json:"policyRuleHash,omitempty"` // Hash of the policy rule that issued this challenge
+	Difficulty     int               `json:"difficulty,omitempty"`     // Difficulty that was in effect when issued
+	Spent          bool              `json:"spent"`                    // Has the challenge already been solved?
 }