Fix .gitignore ignoring cmd/syncwarden directory

The pattern 'syncwarden' matched cmd/syncwarden/ too.
Anchor binary patterns to repo root with leading slash.

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

.gitea/workflows/release.yml

@@ -27,14 +27,6 @@ jobs:
           go install github.com/goreleaser/nfpm/v2/cmd/nfpm@v2.41.1
           echo "$GOPATH/bin" >> $GITHUB_PATH
 
-      - name: Debug workspace
-        run: |
-          echo "pwd: $(pwd)"
-          echo "go version: $(go version)"
-          ls -la
-          ls -la cmd/
-          cat go.mod
-
       - name: Build Linux binaries
         run: |
           CGO_ENABLED=0 GOOS=linux GOARCH=amd64 go build -trimpath -ldflags="-s -w" -o syncwarden ./cmd/syncwarden