feat: comprehensive v1 - inline decorations, visualizations, sidebar, monorepo support

[eddy5885]

Summary

This PR delivers a comprehensive v1 upgrade to tsperf/tracer, addressing multiple open issues in a single cohesive implementation. Built for the Algora TSPerf Type Challenge.

New Features

• Inline Decorations (addresses visualizations #46, Add trace line visual tones #59): Severity-based heatmap overlays showing type complexity directly in the editor — red/yellow/green with gutter icons, overview ruler markers, and hover messages showing duration and type counts
• Sidebar Panel (addresses 🚨 unwelcome pr from bot 🚨 #80): Activity bar sidebar with file-level summaries and hot spots tree view — click to navigate to problematic positions
• Flame Chart Visualization (addresses visualizations #46, Add hot path trace visualization #53): Interactive flame chart in the trace viewer with click-to-navigate and hover tooltips
• Bar Chart Visualization: Top 20 slowest checks bar chart with color-coded duration bars
• Tree Node Visual Tones (addresses Add trace line visual tones #59): Color-coded duration backgrounds and inline duration bars on tree nodes
• Trace Expression Command: Select an expression and instantly measure its type complexity (QuickInfo + Completions timing) — shows inline result that auto-clears after 5s
• Monorepo/tsconfig Selection (addresses Monorepo support #33, fix: choose containing tsconfig for monorepo files #79): Select tsconfig command for workspaces with multiple tsconfig.json files — auto-detects all configs and lets user switch
• Incremental Metrics Cache: Persistent measurement cache that avoids re-measuring unchanged files and positions — includes "Show Metrics Overview" command for top hot spots
• Code Action Suggestions (addresses Trace analysis and suggestions #42): QuickFix suggestions for simplifying complex types — extract type alias, use satisfies, add explicit annotations

Bug Fixes

• Fixed typo: clearTaceDiagnostics → clearTraceDiagnostics (in traceDiagnostics.ts and commands.ts)
• Updated generate-contributes.ts to properly generate all new commands, settings, and view registrations

Configuration

• New setting: tsperf.tracer.enableInlineDecorations (default: true)

Commands Added

• Tracer: Trace expression at cursor
• Tracer: Select tsconfig for tracing
• Tracer: Show metrics overview

Test Plan

• Open a TypeScript project with complex types
• Run Tracer: tsc trace and verify flame chart + bar chart render in trace viewer
• Verify inline decorations appear with correct severity colors
• Verify sidebar panel shows hot spots and clicking navigates to position
• Select an expression → Tracer: Trace expression at cursor → verify inline duration appears
• In a monorepo workspace, run Tracer: Select tsconfig for tracing → verify QuickPick shows all tsconfigs
• Run Tracer: Show metrics overview → verify QuickPick shows top hot spots
• Verify code action suggestions appear on slow type positions
• Verify enableInlineDecorations setting toggles decorations on/off

🤖 Generated with Claude Code

[eddy5885]

Hi! 👋

I submitted this comprehensive PR about two weeks ago and haven't received any feedback yet. I'd love to know:

1. Is this PR still under consideration?
2. Are there any specific areas you'd like me to improve or clarify?

I'm happy to iterate on this based on your feedback. Thanks for your time!

[danielroe]

this should not be needed

[danielroe]

what was this for?