fix(insert-markers): extract images when insertMarkers enabled

Images were not being extracted when insert_markers=true but
include_image_indexes=false, causing image markers to be missing
from output.

The extractPageContent function now receives shouldIncludeImages
which is true when EITHER includeImageIndexes OR insertMarkers
is enabled, ensuring images are available for marker insertion.

Verified with real-world PDF (SOLO 574 HYDRO manual) showing
correct [IMAGE] markers on all diagram pages.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

Author: Martin

dist/index.js

@@ -1537,7 +1537,12 @@ var normalizeLine = (input, options) => {
   return normalized;
 };
 var buildNormalizedPageText = (items, options) => {
-  const { preserveWhitespace = false, trimLines = true, maxCharsPerPage, insertMarkers = false } = options;
+  const {
+    preserveWhitespace = false,
+    trimLines = true,
+    maxCharsPerPage,
+    insertMarkers = false
+  } = options;
   const normalizedLines = [];
   let truncated = false;
   let consumed = 0;
@@ -1633,7 +1638,8 @@ var processPage = async (pdfDocument, pageNum, sourceDescription, options, finge
   if (cached) {
     return cached;
   }
-  const items = await extractPageContent(pdfDocument, pageNum, options.includeImageIndexes, sourceDescription);
+  const shouldIncludeImages = options.includeImageIndexes || options.insertMarkers;
+  const items = await extractPageContent(pdfDocument, pageNum, shouldIncludeImages, sourceDescription);
   const normalized = buildNormalizedPageText(items, {
     preserveWhitespace: options.preserveWhitespace,
     trimLines: options.trimLines,

src/handlers/readPages.ts

@@ -38,10 +38,13 @@ const processPage = async (
     return cached;
   }
 
+  // Extract images if either includeImageIndexes or insertMarkers is enabled
+  const shouldIncludeImages = options.includeImageIndexes || options.insertMarkers;
+
   const items = await extractPageContent(
     pdfDocument,
     pageNum,
-    options.includeImageIndexes,
+    shouldIncludeImages,
     sourceDescription
   );