feat: Implement working ANSI color support for terminal output

- Fix ANSI escape sequences to use actual binary characters instead of text representations
- Use printf to generate proper escape sequences that render with lang="ansi"
- Update README with comprehensive ANSI color support documentation
- Terminal output now displays authentic Nextflow colors (green header, colored hashes, success indicators)

Author: edmundmiller

src/pages/examples/_README.md

@@ -26,9 +26,14 @@ example-name/
 1. Create a new directory with a descriptive name
 2. Add the pipeline script as `_main.nf`
 3. Create any necessary input data in a `data/` subdirectory
-4. Run the pipeline and capture output:
+4. Run the pipeline and capture output with ANSI colors:
    ```bash
+   # For colorized output that renders properly with lang="ansi"
    nextflow run _main.nf > _nextflow_run_output.log 2>&1
+
+   # Then convert text escape sequences to actual binary escape characters
+   # Replace \x1B[ patterns with actual escape characters using printf
+   printf "nextflow run main.nf\n\n\x1B[1;42m N E X T F L O W \x1B[0m  ~  version X.X.X\n..." > _nextflow_run_output.log
    ```
 5. Create an `index.mdx` file that imports both files:
    ```javascript
@@ -45,4 +50,20 @@ Each `index.mdx` file should include:
 - Code blocks showing both the pipeline and execution output
 - Usage instructions
 
-The pages use Expressive Code for syntax highlighting and the `ExampleLayout` for consistent styling.
+The pages use Expressive Code for syntax highlighting and the `ExampleLayout` for consistent styling.
+
+## ANSI Color Support
+
+Terminal output uses `lang="ansi"` to render colorized output. For this to work properly, the log file must contain **actual binary ANSI escape characters** (not text representations).
+
+### Key Requirements:
+- Use `printf` to generate files with real escape sequences
+- Binary escape character is `0x1B` followed by `[` and color codes
+- Text representations like `\x1B[` or `\e[` will render as literal text
+- Common ANSI codes:
+  - `\x1B[1;42m` - Bold white on green (Nextflow header)
+  - `\x1B[35m` - Magenta text
+  - `\x1B[36m` - Cyan text
+  - `\x1B[34m` - Blue text
+  - `\x1B[32m` - Green text (success indicators)
+  - `\x1B[0m` - Reset formatting

src/pages/examples/basic-pipeline/index.mdx

@@ -19,15 +19,10 @@ import terminalOutput from "./_nextflow_run_output.log?raw";
   lang="nextflow"
   title="main.nf"
   frame="code"
-  mark={[1, 3, {range: "8-19"}, {range: "24-35"}, {range: "40-44"}]}
+  mark={[1, 3, { range: "8-19" }, { range: "24-35" }, { range: "40-44" }]}
 />
 
-<Code
-  lang="bash"
-  title="Running the pipeline"
-  frame="terminal"
-  code={terminalOutput}
-/>
+<Code lang="ansi" title="Running the pipeline" frame="terminal" code={terminalOutput} />
 
 ### Key Concepts