fix: use absolute paths and add debug output for DAISY/BRF conversion

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: taylorarndt

.github/workflows/build-epub.yml

@@ -53,22 +53,24 @@ jobs:
             sleep 2
           done
 
-      - name: Convert EPUB to DAISY 2.02 (text-only talking book)
+      - name: Convert EPUB to DAISY 2.02 (text-only, no TTS required)
         continue-on-error: true
         run: |
           mkdir -p epub/daisy
           pipeline2/daisy-pipeline/cli/dp2 epub3-to-daisy202 \
-            --source epub/git-going-with-github.epub \
-            --output epub/daisy/
+            --source "$(pwd)/epub/git-going-with-github.epub" \
+            --output "$(pwd)/epub/daisy/" || echo "DAISY conversion failed - check dp2 logs above"
+          ls epub/daisy/ || echo "No DAISY output produced"
 
-      - name: Convert EPUB to BRF (Braille)
+      - name: Convert EPUB to BRF (Braille, no TTS required)
         continue-on-error: true
         run: |
           mkdir -p epub/brf
           pipeline2/daisy-pipeline/cli/dp2 epub3-to-pef \
-            --source epub/git-going-with-github.epub \
-            --output epub/brf/ \
-            --output-format brf
+            --source "$(pwd)/epub/git-going-with-github.epub" \
+            --output "$(pwd)/epub/brf/" \
+            --output-format brf || echo "BRF conversion failed - check dp2 logs above"
+          ls epub/brf/ || echo "No BRF output produced"
 
       - name: Upload EPUB artifact
         uses: actions/upload-artifact@v4