Critical: Parameter names leak into global action_parameters set

[coderabbitai]

Problem Description

In the analyzer's analyze_action_body method (src/analyzer/mod.rs, lines 1388-1427), parameter names are inserted into self.action_parameters before analyzing action bodies but are never removed afterward. This causes parameter names from one action to remain valid when analyzing subsequent code, potentially masking undefined variable errors in other actions or top-level statements.

Affected Code

File: src/analyzer/mod.rs
Lines: 1388-1427 (specifically lines 1399-1401 where parameters are inserted)

Expected Behavior

Parameter names should only be valid within their respective action's scope and should be removed from action_parameters after the action body analysis completes.

References

• Pull Request: Merge pull request #195 from WebFirstLanguage/devin/1765135204-fix-clippy-warnings #196
• Review Comment: Merge pull request #195 from WebFirstLanguage/devin/1765135204-fix-clippy-warnings #196 (comment)
• Reported by: @logbie

[logbie]

@claude investigate and fix this issue please

[claude]

Claude finished @logbie's task —— View job • claude/issue-198-20251208-1633 • Create PR ➔

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Issue Fixed ✅

I have successfully investigated and fixed the critical parameter scope leakage issue in the WFL analyzer.

Problem Summary

Parameter names were being added to the global action_parameters set during action analysis but never removed afterward, causing them to leak into subsequent code analysis and masking undefined variable errors.

Solution Implemented

• Root Cause: Lines 1399-1401 in analyze_action_body added parameter names but had no cleanup
• Fix Applied: Modified the method to collect parameter names during insertion and remove them after action analysis completes
• Pattern Used: Followed the same cleanup approach already used for loop variables (line 646)

Code Changes

• File: src/analyzer/mod.rs:1388-1437
• Added: Parameter name collection and cleanup logic
• Follows: Existing patterns and coding conventions

Testing

• ✅ TDD Approach: Created failing test first demonstrating the bug
• ✅ Test Verification: Test now passes, confirming the fix works
• ✅ Regression Check: All 18 analyzer tests pass
• ✅ Code Quality: Clippy passed with no warnings

Changes Committed

fix: clean up parameter names from action_parameters set after action analysis

This fixes a critical scope leakage issue where parameter names from one action
remained in the global action_parameters set and were not flagged as undefined
when referenced in other actions.

The fix follows the same cleanup pattern used for loop variables, collecting
parameter names and removing them after action body analysis completes.

Fixes issue #198