fix(dsn): prevent silent exit during uncached DSN auto-detection (#411)

[BYK]

Problem

Commands using resolveOrg() without an explicit org argument exit silently (code 0, no output) when the DSN cache is empty. Two root causes:

1. Bare main() call in bin.ts — nothing keeps the event loop alive while the returned Promise is pending
2. Bun.Glob.scan() async iterators don't ref-count the event loop — used in two DSN detection paths, they let the event loop drain while scanning is still in progress

Fix

• src/bin.ts: Add setInterval keepalive cleared via .finally() to prevent premature event loop drain. Top-level await isn't an option because the npm bundle uses esbuild CJS format.
• src/lib/dsn/project-root.ts: Replace Bun.Glob.scan() in anyGlobMatches() with readdir() + synchronous Bun.Glob.match() for language marker detection.
• src/lib/dsn/env-file.ts: Replace Bun.Glob.scan("*") with readdir() in detectFromMonorepoEnvFiles() for listing monorepo package directories.

Both readdir() and Bun.Glob.match() properly ref-count the event loop / are synchronous, so they don't trigger the premature exit.

Closes #411

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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 ✨

Init

• Add --team flag to relay team selection to project creation by MathurAditya724 in #403
• Enforce canonical feature display order by betegon in #388
• Accept multiple delimiter formats for --features flag by betegon in #386
• Add git safety checks before wizard modifies files by betegon in #379
• Add experimental warning before wizard runs by betegon in #378
• Add init command for guided Sentry project setup by betegon in #283

Issue List

• Auto-compact when table exceeds terminal height by BYK in #395
• Redesign table to match Sentry web UI by BYK in #372

Other

• (trial) Auto-prompt for Seer trial + sentry trial list/start commands by BYK in #399
• Support SENTRY_HOST as alias for SENTRY_URL by betegon in #409
• Add --dry-run flag to mutating commands by BYK in #387
• Return-based output with OutputConfig on buildCommand by BYK in #380
• Add --fields flag for context-window-friendly JSON output by BYK in #373
• Magic @ selectors (@latest, @most_frequent) for issue commands by BYK in #371
• Input hardening against agent hallucinations by BYK in #370
• Add response caching for read-only API calls by BYK in #330

Bug Fixes 🐛

Init

• Remove implementation detail from help text by betegon in #385
• Truncate uncommitted file list to first 5 entries by MathurAditya724 in #381

Other

• (api) Convert --data to query params for GET requests by BYK in #383
• (docs) Remove double borders and fix column alignment on landing page tables by betegon in #369

• (dsn) Prevent silent exit during uncached DSN auto-detection (Bug: Process exits silently with no output when DSN auto-detection is slow (uncached first run) #411) by BYK in #414

• Show human-friendly names in trial list and surface plan trials by BYK in #412
• Add trace ID validation to trace view + UUID dash-stripping by BYK in #375

Documentation 📚

• Update credential storage docs and remove stale config.json references by betegon in #408

Internal Changes 🔧

Init

• Remove --force flag by betegon in #377
• Remove dead determine-pm step label by betegon in #374

Other

• (log/list) Convert non-follow paths to return CommandOutput by BYK in #410
• Convert list command handlers to return data instead of writing stdout by BYK in #404
• Split api-client.ts into focused domain modules by BYK in #405
• Migrate non-streaming commands to CommandOutput with markdown rendering by BYK in #398
• Convert Tier 2-3 commands to return-based output and consola by BYK in #394
• Convert remaining Tier 1 commands to return-based output by BYK in #382
• Converge Tier 1 commands to writeOutput helper by BYK in #376

Other

• Minify JSON on read and pretty-print on write in init local ops by MathurAditya724 in #396

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Codecov Results 📊

✅ 104 passed | Total: 104 | 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 95.00%. Project has 697 uncovered lines.
✅ Project coverage is 96.68%. Comparing base (base) to head (head).

Files with missing lines (3)

File	Patch %	Lines
code-scanner.ts	97.83%	⚠️ 7 Missing
project-root.ts	98.08%	⚠️ 6 Missing
env-file.ts	98.32%	⚠️ 2 Missing

Coverage diff

@@            Coverage Diff             @@
##          main       #PR       +/-##
==========================================
+ Coverage    96.68%    96.68%        —%
==========================================
  Files          159       159         —
  Lines        21011     21010        -1
  Branches         0         0         —
==========================================
+ Hits         20314     20313        -1
- Misses         697       697         —
- Partials         0         0         —

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