Document BJorne Arithmetic Evaluator - Value 3

[LSantha]

Concept: BJorne Arithmetic Evaluator

Value: 3 (Standard - Shell expressions)

What it is: Arithmetic expression evaluator for shell expressions

Key files:

• shell/src/shell/org/jnode/shell/bjorne/BjorneArithmeticEvaluator.java
• shell/src/shell/org/jnode/shell/bjorne/BjorneParser.java

Bridges: Shell, Expression parsing, Arithmetic

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Documentation Requirements

For Value 3 (Standard):

1. Update index (index.md) as appropriate:

   • Concepts → Pages: Add the page name if significant
   • Source Path → Pages: Map shell/src/shell/org/jnode/shell/bjorne/ to the page

2. Update Glossary: Add 1-sentence definition if introducing new project-specific term

Skill Reference

Use update-wiki skill for wiki maintenance workflow

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Related Concepts (from index.md)

• [[Shell-Commands]]
• [[Syntax]]

[LSantha]

/oc Please proceed with this task.

[opencode-agent]

Done! I've created the BJorne Arithmetic Evaluator documentation:

Wiki URL: https://github.com/LSantha/jnode_ai.wiki/wiki/BJorne-Arithmetic-Evaluator

Summary:

• Created BJorne-Arithmetic-Evaluator.md documenting JNode's shell arithmetic expression evaluator with shunting-yard algorithm, POSIX operator precedence, variable resolution, and gotchas
• Updated index.md with entries in Pages table, Concepts → Pages, Source Path → Pages (bjorne/ path), and Task Routing (expression evaluation)
• Updated Changelog.md with the new entry
• Pushed to wiki and closed issue Document BJorne Arithmetic Evaluator - Value 3 #132

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