chore: release v3.1.3

[carlos-alm]

Summary

• Bump version to 3.1.3
• Add CHANGELOG entry for all commits since v3.1.2
• Update ROADMAP version and Phase 3.3 progress notes
• Update BACKLOG last-updated date

Highlights

• fix(complexity): WASM builds producing zero complexity rows (fix(complexity): WASM builds produce zero complexity rows #414)
• fix(native): dynamic import tracking, version reporting, parser memory cleanup (fix: resolve dogfood issues #408–#411 #418)
• feat(builder): setupMs/finalizeMs phase timers close ~45% accounting gap (feat(builder): add setupMs and finalizeMs phase timers #415)
• perf(db): reusable cachedStmt utility for prepared statement caching (refactor: extract cachedStmt into reusable db utility #417, perf: cache prepared statements for hot-path edge repository functions #402)

Test plan

• npm install succeeds with updated lock file
• CHANGELOG renders correctly on GitHub
• ROADMAP checklist items match actual codebase state

[claude]

PR Review Analysis

Analyzing release PR #420 following structured review process:

Todo List

• Phase 1: Root cause analysis - understand release purpose
• Phase 2: Configuration change detection
• Phase 3: Test integrity verification
• Phase 4: Code quality review
• Final Assessment: Provide structured recommendation

Starting analysis of changed files...

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