Add support for images

CLAUDE.md

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+# CLAUDE.md
+
+This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.
+
+## Build and Test Commands
+
+```bash
+bundle install              # Install dependencies
+bundle exec rake test       # Run tests
+bundle exec rake rubocop    # Run linter
+bundle exec rake            # Run both tests and linter
+
+# Run a single test file
+bundle exec ruby -Ilib:test test/paragraph_test.rb
+
+# Run a specific test by name
+bundle exec ruby -Ilib:test test/paragraph_test.rb -n test_paragraph_with_text
+```
+
+## Architecture
+
+Ezdoc is a Ruby gem for creating .docx files using a DSL. The gem generates valid Office Open XML (OOXML) documents.
+
+### Core Components
+
+- **Document** (`lib/ezdoc/document.rb`): Entry point via `Document.create`. Includes the Builder module and maintains a collection of nodes.
+
+- **Builder** (`lib/ezdoc/builder.rb`): DSL methods (`p`, `text`, `b`, `i`, `u`, `ul`, `ol`, `li`, `table`, `tr`, `td`). Uses a format stack for nested formatting and target tracking for content placement.
+
+- **Nodes** (`lib/ezdoc/nodes/`): Document element representations (Paragraph, Run, List, ListItem, Table, TableRow, TableCell). All inherit from `Nodes::Base`.
+
+- **Package** (`lib/ezdoc/package.rb`): Assembles the docx ZIP structure using rubyzip. Coordinates XML generation.
+
+- **XML generators** (`lib/ezdoc/xml/`): Generate OOXML-compliant XML:
+  - `DocumentXml`: Main content with paragraphs, lists, tables
+  - `ContentTypes`: [Content_Types].xml
+  - `Relationships`: .rels files
+  - `Numbering`: numbering.xml for lists
+
+### Data Flow
+
+1. User calls DSL methods on Document
+2. Builder creates Node objects, pushed to Document's `@nodes` array
+3. On save, Package creates ZIP with XML generators producing each required file
+4. XML generators use Nokogiri to build OOXML with proper namespaces
+
+### Testing
+
+Tests use Minitest. `EzdocTestHelpers` module provides helpers that create temp documents and extract XML for assertions.