[Bug] ZCode markdown renderer: Single-$ math mode corrupts text with dollar signs

Bug Description

ZCode chat markdown renderer incorrectly interprets $ characters as math delimiters, converting normal text (currency, variables, prices) into KaTeX math expressions.

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Problem Behavior

What Happens:

1. User types text containing $ (currency, variable names, etc.)
2. ZCode uses single-dollar inline math (micromark-extension-math + KaTeX)
3. Every pair of $ opens/closes a math span
4. Text between $ becomes: italic serif, collapsed spacing, eaten line breaks

Example:

Input:  "Cost is $50 for one and $100 for two"
Output: "50 for one and" renders as MATH expression!

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Technical Root Cause

• File: resources\app.asar → out\renderer\assets\styles-BvByAfPm.js
• Config: math: gT({singleDollarTextMath:!0}) — hardcoded to TRUE
• Problem: No settings toggle exists to disable this
• Search: This string appears exactly ONCE in entire app as config

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Impact Severity

Reporter tested against actual session transcript:

"Nearly every paragraph and table row had multiple math spans, some swallowing 30–60 words of prose"

Metric	Finding
Paragraphs affected	Nearly every one
Table rows affected	Nearly every row
Max words swallowed	30-60 words per span

Affected Content Types:

• Currency: "$50", "$100", "$29.99"
• Variables: "$var", "$user.name", ${expr}
• Prices in tables
• Shell code / terminal output
• Any text with $ character

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Why Critical for ZCode Users

1. Developers use $ constantly — PHP, shell vars, JS template literals
2. Code discussions break — Variable names become math
3. Technical writing corrupted — Pricing, budgets, configs
4. Unpredictable — Cannot easily predict what triggers math mode
5. No workaround — No setting to disable it

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Suggested Fixes

Option A: Disable Single-Dollar Math (Recommended)

// Change hardcoded config:
math: gT({singleDollarTextMath: false})  // Require $$ instead

Option B: Add Settings Toggle

Settings → Editor → Markdown Rendering
☐ Enable single-dollar inline math ($...$)
☑ Use double-dollar only ($$...$$) [safer]

Option C: Smarter Heuristic

Only treat as math if content looks like math (no spaces, short, math-like chars only).

Option D: Escape Mechanism

Allow \$50 to render as literal $50.

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Reproduction Steps

1. Open ZCode
2. Send message: "The price is $50 or $100"
3. Observe: Text between $ signs becomes italic math
4. Try table: | Cost | $50 | → Formatting breaks

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Reporter Info

• Source: Discord
• Reporter: Luke (OP)
• Timestamp: Yesterday at 4:38 AM
• Technical Level: Advanced (analyzed app.asar source)

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Severity: P1 High

• Silent data corruption of output text
• Affects nearly all text with $ characters
• No user workaround available
• Particularly bad for developers (primary users)

Labels Suggested:

bug, markdown, renderer, math, katex, zcode, text-corruption

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Submitted by:
Regards,
Roman (Discord: bignavi_x)

• Z.ai Volunteer Ambassador
• Tech resources channel: https://t.me/VibeCodePrompterSystem
• Tech Blog: http://claw.rommark.dev/blog

Start by locating the renderer configuration in resources\app.asar → out\renderer\assets\styles-BvByAfPm.js and confirm the single occurrence of math: gT({singleDollarTextMath:!0}). Reproduce the issue with “The price is $50 or $100” and a table containing $50; done means literal dollar-sign text renders normally while the selected math-delimiter behavior is verified.