perf: switch from @sentry/bun to @sentry/node-core/light (~170ms startup savings)

[BYK]

Summary

Switch from @sentry/bun to @sentry/node-core/light to eliminate the OpenTelemetry dependency tree that a CLI tool never uses. Additionally, patch @sentry/core barrel to remove unused modules (AI tracing, MCP server, Supabase, feature flags).

Changes

Phase 1: SDK upgrade

• Upgrade Sentry SDK 10.39.0 → 10.44.0

Phase 2: Import migration (~150ms savings)

• Replace @sentry/bun + @sentry/node dependencies with @sentry/node-core
• Replace all import * as Sentry from "@sentry/bun" → "@sentry/node-core/light" (15 source files, 4 test files)
• Change BunClient → LightNodeClient in telemetry.ts
• Export Span type from @sentry/core (canonical source)
• Remove esbuild @sentry/bun → @sentry/node alias in bundle.ts (no longer needed)

Phase 3: Barrel patching (~14ms savings)

• Patch @sentry/core barrel to remove 32 export lines pulling in ~59 unused transitive modules (AI tracing integrations, MCP server, Supabase, feature flags, etc.)
• Patch @sentry/node-core/light barrel to remove 11 matching re-exports

Phase 4: Upstream issue drafts

• Added .github/upstream-issues/ with drafts for:
  • @sentry/core/light sub-path export request
  • @sentry/bun/light entry point request

What we lose (nothing meaningful)

Feature	Why irrelevant
29 OpenTelemetry auto-instrumentations	CLI is not a web server
bunServerIntegration	CLI does not call Bun.serve()
BunClient class	Deprecated since v9; replaced by LightNodeClient
Bun-native fetch transport	makeNodeTransport works fine in Bun
OTEL context propagation	Light mode uses AsyncLocalStorage — same behavior
SDK envelope metadata "bun"	Changes to "node-light" — cosmetic only. cli.runtime tag still distinguishes Bun vs Node

API compatibility verified

Every API the CLI uses (captureException, startSpan, setTag, metrics, logger, createConsolaReporter, getTraceData, isEnabled, flush, endSession, etc.) is available in @sentry/node-core/light.

Risk

Light mode is labeled experimental, but we pin SDK versions exactly (10.44.0, not ^10.44.0), so we control when SDK updates happen.

Verification

• ✅ bun run typecheck — clean
• ✅ bun run test:unit — 3883/3885 pass (2 pre-existing flaky failures in upgrade tests)
• ✅ bun run test:isolated — 126/126 pass
• ✅ bun run check:skill — up to date
• ✅ bun run check:errors — no anti-patterns
• ✅ Patched SDK exports all needed symbols, removed symbols are undefined
• 📊 SDK import time: ~114ms (down from ~285ms)

Closes #472

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

📋 Changelog Preview

This is how your changes will appear in the changelog.
Entries from this PR are highlighted with a left border (blockquote style).

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New Features ✨

• (telemetry) Track TTY vs non-TTY invocations via metric by betegon in #482

Bug Fixes 🐛

• (project) Fallback to org listing when bare slug matches an organization by betegon in #475

Internal Changes 🔧

• Switch from @sentry/bun to @sentry/node-core/light (~170ms startup savings) by BYK in #474

• Regenerate skill files by github-actions[bot] in b7b240ec

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_{🤖 This preview updates automatically when you update the PR.}

[github-actions]

Codecov Results 📊

✅ 126 passed | Total: 126 | Pass Rate: 100% | Execution Time: 0ms

📊 Comparison with Base Branch

Metric	Change
Total Tests	—
Passed Tests	—
Failed Tests	—
Skipped Tests	—

✨ No test changes detected

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 1034 uncovered lines.
✅ Project coverage is 95.71%. Comparing base (base) to head (head).

Files with missing lines (7)

File	Patch %	Lines
human.ts	96.35%	⚠️ 46 Missing
telemetry.ts	91.94%	⚠️ 37 Missing
delta-upgrade.ts	95.38%	⚠️ 32 Missing
sentry-client.ts	93.42%	⚠️ 15 Missing
interactive-login.ts	92.16%	⚠️ 8 Missing
code-scanner.ts	98.20%	⚠️ 6 Missing
infrastructure.ts	99.50%	⚠️ 1 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    95.71%    95.71%        —%
==========================================
  Files          177       177         —
  Lines        24091     24100        +9
  Branches         0         0         —
==========================================
+ Hits         23057     23066        +9
- Misses        1034      1034         —
- Partials         0         0         —

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