Markdown to Jira Converter

Convert GitHub-flavored Markdown to Jira wiki markup syntax directly in the conversation.

Conversion Rules

1. Code Blocks (extract first, restore last)

Fenced code blocks with optional language:

```javascript
code here
```

becomes:

{code:javascript}
code here
{code}

Without language: {code}...{code}

2. Inline Code

`code` becomes {{code}}

3. Headers

# H1       →  h1. H1
## H2      →  h2. H2
### H3     →  h3. H3
#### H4    →  h4. H4
##### H5   →  h5. H5
###### H6  →  h6. H6

4. Bold and Italic

• **bold** or __bold__ → *bold*
• *italic* → _italic_

Important: Process bold first (replace ** with Jira *), then convert remaining single * italic to _.

5. Strikethrough

~~text~~ → -text-

6. Images

![alt](url) → !url|alt=alt! (or !url! if no alt text)

7. Links

[text](url) → [text|url]

8. Blockquotes

> text → bq. text

9. Horizontal Rules

---, ***, or ___ → ----

10. Unordered Lists (with nesting)

Nesting is determined by indentation (2 spaces per level):

- item         →  * item
  - nested     →  ** nested
    - deeper   →  *** deeper

11. Ordered Lists (with nesting)

1. item          →  # item
   1. nested     →  ## nested

12. Tables

Markdown:

| H1 | H2 |
|----|-----|
| D1 | D2 |

Jira:

||H1||H2||
|D1|D2|

The separator row (|---|---|) is removed. Header cells use || delimiters, data cells use |.

How to Apply

1. If the user provides markdown text directly, convert it and output the Jira markup.
2. If the user points to a markdown file, read it, convert, and output the result.
3. Always output the converted Jira markup in a code block so the user can copy it easily.
4. If the input is large, process it section by section to avoid errors.