Auto-detect template variables and show all in single modal

[chhoumann]

Summary

Automatically detect all variables in a template ({{VALUE:name}}, {{VDATE:date}}, etc.) and present them in a single input form instead of sequential prompts.

Current Behavior

• Variables are prompted one by one in sequence
• Users must wait for each prompt to complete before seeing the next
• No overview of all required inputs upfront

Proposed Solution

Add option to scan template for all variable placeholders and show them in a single modal with:

• All detected variables listed in one form
• Appropriate input types (text, date picker, dropdown, etc.)
• Validation before proceeding
• Preview of final output

Benefits

• Better user experience - see all required inputs at once
• Faster workflow - fill everything in one step
• Easier to review and modify inputs before submission
• Reduced context switching between prompts

Implementation Ideas

• Scan template for {{VALUE:name}}, {{VDATE:name}}, etc.
• Generate form fields based on variable types
• Support existing variable formats and behaviors
• Optional setting - keep sequential prompts as default

Related

Similar to how form builders work - collect all fields first, then process.