fix(setup): suppress agent skills and welcome messages on upgrade

[BYK]

Summary

Suppresses noisy output during upgrades that is only relevant for fresh installs. Follows up on #326 which did the same for shell completions.

What's suppressed on upgrade

Message	When suppressed
Agent skills: Updated <path>	Subsequent runs (file already exists)
Get started: welcome block	--install when binary already exists
Setup complete!	Always (upgrade command prints its own message)

How it works

• Agent skills: Same created pattern as completions — only print on first creation, silently update on subsequent runs
• Welcome message: handleInstall() now checks if the binary already exists before installation. Returns created: boolean to distinguish fresh install from upgrade
• Setup complete: Removed entirely — the upgrade command already prints Successfully upgraded to <version>

Behavior table

Scenario	Output
Fresh install (--install, no existing binary)	Binary path + welcome + getting started
Curl upgrade (--install, binary exists)	Binary path only
npm/pnpm upgrade (no --install)	Silent
Any + --quiet	Silent

Tests

• Updated 3 existing tests for new behavior
• Added 2 new tests: upgrade suppression for agent skills and --install with pre-existing binary

[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 ✨

Trace

• Add cursor pagination to trace list by BYK in #324
• Add sentry trace logs subcommand (Add CLI support for fetching logs associated with a trace #247) by BYK in #311

Other

• (api) Add --data/-d flag and auto-detect JSON body in fields by BYK in #320
• (formatters) Render all terminal output as markdown by BYK in #297
• (issue-list) Global limit with fair distribution, compound cursor, and richer progress by BYK in #306

Bug Fixes 🐛

Api

• Use numeric project ID to avoid "not actively selected" error by betegon in #312
• Use limit param for issues endpoint page size by BYK in #309
• Auto-correct ':' to '=' in --field values with a warning by BYK in #302

Formatters

• Expand streaming table to fill terminal width by betegon in #314
• Fix HTML entities and escaped underscores in table output by betegon in #313

Setup

• Suppress agent skills and welcome messages on upgrade by BYK in #328

• Suppress shell completion messages on upgrade by BYK in #326

Other

• (ci) Generate JUnit XML to silence codecov-action warnings by BYK in #300
• (nightly) Push to GHCR from artifacts dir so layer titles are bare filenames by BYK in #301
• (region) Resolve DSN org prefix at resolution layer by BYK in #316
• (test) Handle 0/-0 in getComparator anti-symmetry property test by BYK in #308
• (trace-logs) Timestamp_precise is a number, not a string by BYK in #323

Internal Changes 🔧

Api

• Upgrade @sentry/api to 0.21.0, remove raw HTTP pagination workarounds by BYK in #321
• Wire listIssuesPaginated through @sentry/api SDK for type safety by BYK in #310

Other

• (craft) Add sentry-release-registry target by BYK in #325

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[github-actions]

Codecov Results 📊

✅ 2434 passed | Total: 2434 | Pass Rate: 100% | Execution Time: 0ms

📊 Comparison with Base Branch

Metric	Change
Total Tests	📈 +2
Passed Tests	📈 +2
Failed Tests	—
Skipped Tests	—

All tests are passing successfully.

✅ Patch coverage is 100.00%. Project has 3137 uncovered lines.
✅ Project coverage is 81.23%. Comparing base (base) to head (head).

Files with missing lines (1)

File	Patch %	Lines
setup.ts	98.21%	⚠️ 5 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    81.23%    81.23%        —%
==========================================
  Files          121       121         —
  Lines        16711     16711         —
  Branches         0         0         —
==========================================
+ Hits         13574     13574         —
- Misses        3137      3137         —
- Partials         0         0         —

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