Fix parseNumber handling of NaN and Inf

[theRebelliousNerd]

Added safety check to parseNumber in the edge case detector to correctly handle anomalous floats like NaN and Inf to avoid causing infinite complexity issues. Implemented gap tests for type coercion verification.

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PR created automatically by Jules for task 16844102805502032096 started by @theRebelliousNerd

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: cadd13b6-e9a1-4b1c-91a1-03fc4ee9f941

📥 Commits

Reviewing files that changed from the base of the PR and between cc0e10f and fe9a594.

📒 Files selected for processing (3)

• internal/campaign/edge_case_detector.go
• internal/campaign/edge_case_detector_gaps_test.go
• internal/campaign/edge_case_detector_test.go

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix-parse-number-nan-inf-16844102805502032096

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