update synopsis and module docs to mention DOCX output

- Transform.hs: DOCX case returns blocks unchanged (no unicode substitution needed)
- Mermaid.hs: DOCX uses PNG images at normal scale (like HTML, not 3x like PDF)

.gitignore

@@ -18,4 +18,5 @@ stack-setup-2.yaml
 analytics-charts.md
 architecture-deep-dive.md
 devcontainer.org
+.devcontainer/
 root.json

README.md

@@ -6,8 +6,9 @@ A self-contained CLI tool that converts Markdown with Mermaid diagrams into PDF
 
     docster -pdf path/to/file.md
     docster -html path/to/file.md
+    docster -docx path/to/file.md
 
-Mermaid code blocks (```mermaid) will be rendered to SVG and embedded.
+Mermaid code blocks (```mermaid) will be rendered to SVG (HTML) or PNG (PDF/DOCX) and embedded.
 
 ## Installation
 

docster.cabal

@@ -1,9 +1,9 @@
 cabal-version:       3.0
 name:                docster
 version:             0.1.0.0
-synopsis:            A self-contained CLI tool that converts Markdown with Mermaid diagrams to PDF/HTML
-description:         Docster converts Markdown documents containing Mermaid diagrams into PDF or HTML files
-                     using Pandoc and Mermaid CLI. It automatically renders Mermaid code blocks to SVG
+synopsis:            A self-contained CLI tool that converts Markdown with Mermaid diagrams to PDF, HTML, or DOCX
+description:         Docster converts Markdown documents containing Mermaid diagrams into PDF, HTML, or DOCX files
+                     using Pandoc and Mermaid CLI. It automatically renders Mermaid code blocks to SVG (HTML) or PNG (PDF/DOCX)
                      and embeds them in the output.
 homepage:            https://github.com/yourusername/docster
 license:             BSD-3-Clause
@@ -41,7 +41,7 @@ library
       process >=1.6 && <1.7,
       hashable >=1.4 && <1.6,
       containers >=0.6 && <0.8,
-      pandoc >=3.0 && <3.2,
+      pandoc >=3.0 && <3.8,
       pandoc-types >=1.23 && <1.25,
       bytestring >=0.11 && <0.13,
       temporary >=1.3 && <1.4,

src/Docster/Compiler.hs

@@ -1,7 +1,7 @@
 {-# LANGUAGE OverloadedStrings #-}
 {-# LANGUAGE LambdaCase #-}
 
--- | Document compilation functionality for PDF and HTML output
+-- | Document compilation functionality for PDF, HTML, and DOCX output
 module Docster.Compiler
   ( -- * Compilation Functions
     compileToPDF

src/Docster/Mermaid.hs

@@ -79,6 +79,8 @@ generateDiagramPaths (DiagramConfig _ (OutputDir outDir) format) (DiagramId diag
                in (svgFile, T.pack $ takeFileName svgFile)
        PDF  -> let pngFile = outDir </> diagIdStr <> ".png"
                in (pngFile, T.pack pngFile)
+       DOCX -> let pngFile = outDir </> diagIdStr <> ".png"
+               in (pngFile, T.pack pngFile)
 
 -- | Puppeteer configuration content for disabling sandbox
 puppeteerConfigContent :: Text
@@ -90,6 +92,7 @@ callMermaidProcess format mmdFile outputFile = do
   let baseArgs = case format of
         HTML -> ["-i", mmdFile, "-o", outputFile]
         PDF  -> ["-i", mmdFile, "-o", outputFile, "--scale", "3"]
+        DOCX -> ["-i", mmdFile, "-o", outputFile]
   
   -- Create temporary puppeteer config file
   result <- bracket

src/Docster/Transform.hs

@@ -36,8 +36,9 @@ transformDocument config docName (Pandoc meta blocks) = do
     Left err -> return $ Left err
     Right (newBlocks, _finalState) ->
       case dcOutputFormat config of
-        PDF -> return $ Right $ substituteUnicodeSymbols (Pandoc meta newBlocks)
+        PDF  -> return $ Right $ substituteUnicodeSymbols (Pandoc meta newBlocks)
         HTML -> return $ Right $ Pandoc meta newBlocks
+        DOCX -> return $ Right $ Pandoc meta newBlocks
 
 -- | Process a single block with heading tracking state
 processBlockStateful :: DiagramConfig -> Block -> TransformM Block