Simplify workflows

[ericodx]

Summary

• Remove SwiftLint, Periphery, and Gitleaks steps and the entire static-analysis job from both workflows — reducing CI complexity and runtime
• Simplify pull-request-analysis.yml to a single job that runs swift test, ensuring tests pass before merge
• Remove external analyzers and security report paths from sonar-project.properties
• Restore sonar.issue.ignore.multicriteria for hardcoded URI rule exclusion

Type of Change

• ci: Changes related to continuous integration and deployment scripts.

Invariants Checklist

• Original project is never modified — all mutations happen inside an isolated sandbox
• xcodebuild build-for-testing runs exactly once for all schematizable mutants
• No mutant results are lost or duplicated
• Mutant positions (file, line, column) are accurate in all reported results
• A cancelled task never leaves a simulator slot permanently acquired from the pool
• schematizedContent never contains the __swiftMutationTestingID global declaration
• Swift 6 Strict Concurrency compatible
• Pipeline stages remain stateless pure transformations

Pipeline Impact

• None

Testing

• All tests pass locally (swift test)