fix: escape task title and notes when rendering edit fields

[yamuna898]

Related Issue

Fixes #990
Closes #990

Summary

Fixes an issue where task titles containing double quotes were truncated when opened in edit mode.

Changes Made

• Escaped task title values before rendering edit inputs.
• Escaped task notes before rendering edit inputs.
• Preserved special characters such as quotation marks when editing tasks.
• Prevented malformed HTML attributes caused by unescaped user input.

Testing

Tested locally with the following cases:

• A "B" C
• Hello "World"
• Notes containing quotation marks

Verified that:

• Tasks save correctly.
• Tasks display correctly in the task list.
• Edit mode shows the complete original text.
• Saving after editing preserves the full value.

Screenshots

Before:

• Task displayed correctly in task list.

• Edit mode truncated text after the first quotation mark.

After:

• Full task title appears correctly in edit mode.

Checklist

• Code follows project style
• Tested locally
• No unrelated changes included
• Documentation updated (if applicable)