Fix episode highlight save: preserve structured show-notes fields; v2.0.40

sanitizeFeaturedLinks was silently dropping showNotesSummary, showNotesThemes,
showNotesScripture, showNotesQuotes, and showNotesResources on every save — only
the legacy showNotes string was kept. Added sanitization for all five new fields
and updated the keep-filter to include them.

Also removed set -e from entrypoint.sh and made seed/merge steps non-fatal so a
permissions error on the mounted data volume no longer crash-loops the container.

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

entrypoint.sh

@@ -1,11 +1,10 @@
 #!/bin/sh
-set -e
 
 DATA_DIR=${SITEFORGE_DATA_DIR:-/app/data}
 SEED_DIR=/app/data-seed
 
 # Ensure the data directory exists (in case the volume was not mounted)
-mkdir -p "$DATA_DIR"
+mkdir -p "$DATA_DIR" || true
 
 # Seed each default JSON file only when missing.
 # This runs on first boot or a fresh volume, but never overwrites existing data.
@@ -18,7 +17,7 @@ if [ -d "$SEED_DIR" ]; then
 
     if [ ! -f "$target_file" ]; then
       echo "[siteforge] No $base_name found. Seeding from image defaults..."
-      cp "$seed_file" "$target_file"
+      cp "$seed_file" "$target_file" || echo "[siteforge] Warning: could not seed $base_name — check volume permissions on $DATA_DIR"
     fi
   done
 fi
@@ -99,8 +98,8 @@ console.log(`[siteforge] Merged seeded platform links into ${targetFile}`)
 NODE
 }
 
-merge_seed_platform_links "$DATA_DIR/admin-content.json" "$SEED_DIR/admin-content.json"
-merge_seed_platform_links "$DATA_DIR/admin-content-draft.json" "$SEED_DIR/admin-content-draft.json"
+merge_seed_platform_links "$DATA_DIR/admin-content.json" "$SEED_DIR/admin-content.json" || true
+merge_seed_platform_links "$DATA_DIR/admin-content-draft.json" "$SEED_DIR/admin-content-draft.json" || true
 
 # Backfill missing lesson releasedAt values from seeded defaults on upgrades.
 # This keeps persistent volumes compatible with release-date access gating.
@@ -207,8 +206,8 @@ console.log(`[siteforge] Backfilled missing releasedAt values in ${targetFile}`)
 NODE
 }
 
-merge_seed_study_release_dates "$DATA_DIR/admin-content.json" "$SEED_DIR/admin-content.json"
-merge_seed_study_release_dates "$DATA_DIR/admin-content-draft.json" "$SEED_DIR/admin-content-draft.json"
+merge_seed_study_release_dates "$DATA_DIR/admin-content.json" "$SEED_DIR/admin-content.json" || true
+merge_seed_study_release_dates "$DATA_DIR/admin-content-draft.json" "$SEED_DIR/admin-content-draft.json" || true
 
 export SITEFORGE_DATA_DIR="$DATA_DIR"
 exec node server.js