fix: use integer label IDs for Forgejo issue creation

Forgejo's create-issue API expects `labels` as `[int64]` (label IDs),
not `[{"name": "..."}]` like GitHub. The previous format caused a JSON
unmarshal error, silently returning null instead of creating the issue.

Changes:
- Split label step to create-if-missing then look up the ID
- Pass label ID as integer to issue creation: `labels: [169]`
- Add error handling: log API response if issue creation returns null
- Also cleaned up another duplicate upstream-sync label

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.forgejo/kcl-ci/main.k

@@ -389,21 +389,34 @@ else
 fi"""
                 }
                 {
-                    name = "Create upstream-sync label"
+                    name = "Ensure upstream-sync label exists"
                     "if" = h.gha_steps_eq("compare", "needs_sync", "true")
+                    id = "label"
                     run = """\
+API="${h.gha_env("GITHUB_API_URL")}/repos/${h.gha_github("repository")}"
+AUTH="Authorization: token ${h.gha_secret("CLAUDE_BOT_TOKEN")}"
+
+# Try to create the label (409 = already exists, which is fine)
 curl -s -o /dev/null -w "%{http_code}" \\
-  -X POST \\
-  -H "Authorization: token ${h.gha_secret("CLAUDE_BOT_TOKEN")}" \\
-  -H "Content-Type: application/json" \\
+  -X POST -H "${"$"}AUTH" -H "Content-Type: application/json" \\
   -d '{"name":"upstream-sync","color":"#0075ca","description":"Upstream sync tracking"}' \\
-  "${h.gha_env("GITHUB_API_URL")}/repos/${h.gha_github("repository")}/labels" || true"""
+  "${"$"}API/labels" || true
+
+# Look up the label ID (Forgejo needs integer IDs, not names)
+LABEL_ID=${"$"}(curl -s -H "${"$"}AUTH" "${"$"}API/labels" | jq -r '[.[] | select(.name == "upstream-sync")] | .[0].id // ""')
+echo "label_id=${"$"}LABEL_ID" >> "${"$"}GITHUB_OUTPUT"
+echo "upstream-sync label ID: ${"$"}LABEL_ID"
+"""
                 }
                 {
                     name = "Create or update sync issue"
                     "if" = h.gha_steps_eq("compare", "needs_sync", "true")
                     id = "sync-issue"
                     run = """\
+API="${h.gha_env("GITHUB_API_URL")}/repos/${h.gha_github("repository")}"
+AUTH="Authorization: token ${h.gha_secret("CLAUDE_BOT_TOKEN")}"
+LABEL_ID="${h.gha_steps("label", "label_id")}"
+
 BEHIND="${h.gha_steps("compare", "behind")}"
 AHEAD="${h.gha_steps("compare", "ahead")}"
 COMMIT_LOG=${"$"}(cat <<'LOG_EOF'
@@ -460,22 +473,24 @@ TITLE="Upstream sync: ${"$"}{BEHIND} new commits from anthropics/claude-code-act
 if [ "${h.gha_steps("existing", "issue_exists")}" = "true" ]; then
   ISSUE_NUMBER="${h.gha_steps("existing", "issue_number")}"
   curl -s -o /dev/null \\
-    -X PATCH \\
-    -H "Authorization: token ${h.gha_secret("CLAUDE_BOT_TOKEN")}" \\
-    -H "Content-Type: application/json" \\
+    -X PATCH -H "${"$"}AUTH" -H "Content-Type: application/json" \\
     -d "${"$"}(jq -n --arg title "${"$"}TITLE" --arg body "${"$"}BODY" '{title: ${"$"}title, body: ${"$"}body}')" \\
-    "${h.gha_env("GITHUB_API_URL")}/repos/${h.gha_github("repository")}/issues/${"$"}{ISSUE_NUMBER}"
+    "${"$"}API/issues/${"$"}{ISSUE_NUMBER}"
   echo "Updated existing issue #${"$"}{ISSUE_NUMBER}"
   echo "issue_number=${"$"}{ISSUE_NUMBER}" >> "${"$"}GITHUB_OUTPUT"
 else
+  # Forgejo expects labels as integer IDs, not objects with names
   RESPONSE=${"$"}(curl -s \\
-    -X POST \\
-    -H "Authorization: token ${h.gha_secret("CLAUDE_BOT_TOKEN")}" \\
-    -H "Content-Type: application/json" \\
-    -d "${"$"}(jq -n --arg title "${"$"}TITLE" --arg body "${"$"}BODY" '{title: ${"$"}title, body: ${"$"}body, labels: [{"name": "upstream-sync"}]}')" \\
-    "${h.gha_env("GITHUB_API_URL")}/repos/${h.gha_github("repository")}/issues")
+    -X POST -H "${"$"}AUTH" -H "Content-Type: application/json" \\
+    -d "${"$"}(jq -n --arg title "${"$"}TITLE" --arg body "${"$"}BODY" --argjson labels "[${"$"}{LABEL_ID:-0}]" '{title: ${"$"}title, body: ${"$"}body, labels: ${"$"}labels}')" \\
+    "${"$"}API/issues")
   ISSUE_NUMBER=${"$"}(echo "${"$"}RESPONSE" | jq '.number')
-  echo "Created new upstream sync issue #${"$"}{ISSUE_NUMBER}"
+  if [ "${"$"}ISSUE_NUMBER" = "null" ] || [ -z "${"$"}ISSUE_NUMBER" ]; then
+    echo "::error::Failed to create issue. API response:"
+    echo "${"$"}RESPONSE" | jq '.'
+  else
+    echo "Created new upstream sync issue #${"$"}{ISSUE_NUMBER}"
+  fi
   echo "issue_number=${"$"}{ISSUE_NUMBER}" >> "${"$"}GITHUB_OUTPUT"
 fi"""
                 }