fix(dead-export-finder): split CLI from library exports

[ryanbas21]

Summary

• Split src/index.ts into src/index.ts (pure library re-exports) and src/cli.ts (CLI entry point with shebang and NodeRuntime.runMain)
• Updated package.json bin field to point to ./dist/cli.js instead of ./dist/index.js
• exports/main/types unchanged — still point to ./dist/index.js

Previously, both bin and exports pointed to index.js, which had top-level side effects (NodeRuntime.runMain). Anyone importing the package programmatically (e.g. import { Reporter } from '@wolfcola/dead-export-finder') would inadvertently trigger CLI execution, parsing process.argv and potentially setting process.exitCode = 1.

Test plan

• pnpm build — clean compilation
• pnpm test — 42/42 tests passing
• pnpm lint — 0 errors
• CLI --help works from dist/cli.js
• Full monorepo E2E scan completes correctly via dist/cli.js
• Library import from dist/index.js has no side effects (verified with dynamic import)
• pnpm pack — clean tarball, no stale artifacts

🤖 Generated with Claude Code

[pullfrog]

No new issues found.

TL;DR — Mechanical refactor splitting the CLI entry point from library exports so that programmatic imports of @wolfcola/dead-export-finder no longer trigger NodeRuntime.runMain as a side effect.

Key changes

• Move CLI implementation to dedicated cli.ts — All CLI code (command definition, options, pipeline stages, error handling, NodeRuntime.runMain) extracted from src/index.ts into src/cli.ts with a shebang
• Update bin field in package.json — Points to ./dist/cli.js instead of the old ./dist/index.js
• Retain index.ts as pure library barrel — Re-exports only; unchanged public API surface

_{Summary ｜ 3 files ｜ 1 commit ｜ base: main ← fix/split-cli-from-library-export}

Both lenses (correctness, impact) confirmed the split is complete: no CLI code remains in index.ts, tsconfig.lib.json's include: ["src/**/*.ts"] covers the new file, package.json files: ["dist"] includes the compiled output, and no stale references to the old entry point exist anywhere in the repo. Pre-existing Scope LSP noise in test files is unrelated.

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