fix access priorities of each level in LeveledOptions (#1118)

[MitchLewis930]

PR_056

[greptile-apps]

Greptile Overview

Greptile Summary

Fixed priority ordering in LeveledOptions#[] method by changing from forward to reverse iteration. This ensures later configuration levels (loaded from config files, rackup files, etc.) properly override earlier levels, which is the expected behavior for hierarchical configuration systems.

• Changed @set.each to @set.reverse_each in the [] method on lib/puma/configuration.rb:34
• Added test case to verify options can be accessed and modified after loading

Confidence Score: 4/5

• This PR is safe to merge with minimal risk - it's a focused bug fix that corrects configuration priority ordering
• The change is minimal (one line) and corrects a logical bug in priority ordering. The added test verifies basic functionality. Score is 4/5 rather than 5/5 because: (1) the test doesn't specifically validate the priority ordering behavior that was fixed, and (2) there's a potential inconsistency with the flatten method's iteration order that may need future attention
• No files require special attention - the change is straightforward and well-scoped

Important Files Changed

Filename	Overview
lib/puma/configuration.rb	Changed LeveledOptions#[] to use reverse_each for correct priority ordering - later configuration levels now properly override earlier ones
test/test_config.rb	Added test case to verify options can be read and modified after configuration loading

Sequence Diagram

sequenceDiagram
    participant User
    participant Configuration
    participant LeveledOptions
    participant DSL
    
    User->>Configuration: new(options) do |c|
    Configuration->>LeveledOptions: new(defaults, user_options)
    Note over LeveledOptions: @set = [user_options]<br/>@cur = user_options
    
    User->>Configuration: c.workers(3)
    Configuration->>LeveledOptions: shift()
    Note over LeveledOptions: @cur = {}<br/>@set = [user_options, {}]
    Configuration->>DSL: _run(&blk)
    DSL->>LeveledOptions: []=(workers, 3)
    Note over LeveledOptions: @cur[:workers] = 3<br/>@set = [user_options, {workers: 3}]
    
    User->>Configuration: load()
    Configuration->>LeveledOptions: shift()
    Note over LeveledOptions: @set = [user_options, {workers: 3}, {}]
    
    User->>Configuration: options[:workers]
    Configuration->>LeveledOptions: [](workers)
    Note over LeveledOptions: reverse_each through @set<br/>finds {workers: 3} first
    LeveledOptions-->>User: 3

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