[Bug]: twitter post loses text content with paragraph breaks (\n\n)

[Astro-Han]

Description

opencli twitter post --text "..." loses text content when the input contains paragraph breaks (\n\n). Only the last line (typically a URL) is displayed in the posted tweet; all preceding paragraphs are lost.

Steps to Reproduce

# Works: single line
opencli twitter post --text "Hello world https://example.com"

# Works: line breaks without empty lines
opencli twitter post --text "Line 1\nLine 2\nhttps://example.com"

# Fails: paragraphs separated by empty lines
opencli twitter post --text "Paragraph 1\n\nParagraph 2\n\nhttps://example.com"
# Result: tweet only shows "https://example.com", paragraphs 1 and 2 are lost

Root Cause Analysis

post.ts:30 uses document.execCommand('insertText', ...) to type text into Twitter's Draft.js rich text editor. Draft.js represents paragraphs as <div> blocks internally, not \n characters. When insertText encounters \n\n, the editor state becomes corrupted and content is lost.

reply.ts uses the same insertion method and likely has the same issue (not yet confirmed).

Suggested Fix

Replace document.execCommand('insertText', ...) with ClipboardEvent (simulated paste). Draft.js has robust paste handling that properly parses multi-line text into paragraph blocks:

const dt = new DataTransfer();
dt.setData('text/plain', text);
box.dispatchEvent(new ClipboardEvent('paste', {
  bubbles: true, cancelable: true, clipboardData: dt
}));

This should be applied to both post.ts and reply.ts.

[Astro-Han]

post.ts has been fixed in #107 via ClipboardEvent paste. However, reply.ts (line 31) still uses document.execCommand('insertText', ...) and has the same issue.