fix: npx/global bin does nothing (0.1.1 hotfix)

[dvd90]

Critical: published 0.1.0 is dead on its headline command

npx gitgotchi (and npm i -g gitgotchi → gitgotchi) exits 0 and prints nothing.

Cause: the entry-point guard compared import.meta.url to process.argv[1] directly. npm runs a package's bin through a symlink (node_modules/.bin/gitgotchi → dist/cli.js), so argv[1] is the symlink path while import.meta.url is the real file — they never match, the run block is skipped, and the process does nothing.

Verified locally: node dist/cli.js printed the pet; node <symlink-to-cli.js> printed nothing.

Fix: resolve argv[1] to its real path before comparing. Extracted isDirectRun(metaUrl, argv1) and added a test that builds a real file + a symlink to it and asserts both resolve as the entry point (the regression this guards).

• src/cli.ts: realpathSync(argv[1]) in the entry check
• test/cli.test.ts: symlink entry-point test
• version 0.1.0 → 0.1.1

131 tests green, typecheck + lint clean. After merge this needs a npm publish of 0.1.1 (0.1.0 should be deprecated).

🤖 Generated with Claude Code

[claude]

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Review: fix/bin-symlink-entry

• Gather context (diff, CLAUDE.md conventions)
• Review src/cli.ts changes (entry-point guard fix)
• Review test/cli.test.ts changes (TDD compliance)
• Check engine purity / collectors-never-throw / product principles applicability
• Post final review

Verdict: looks good, approving the approach. This is a correct, well-scoped hotfix.

Root cause & fix
The diagnosis is right and the fix is the officially-documented Node.js ESM idiom for this exact problem: comparing import.meta.url to pathToFileURL(realpathSync(argv[1])).href instead of a raw path compare (src/cli.ts:117-124). Node resolves symlinks when setting import.meta.url for the entry module by default, so a raw argv[1] compare was always going to miss the node_modules/.bin/gitgotchi symlink case — this matches expectations.

TDD / CLAUDE.md conventions

• Extracting isDirectRun() as a pure, exported, testable function instead of leaving the logic inline in the guard is the right call — this couldn't have been unit-tested otherwise.
• test/cli.test.ts:47-61 covers the actual regression (symlink → true) plus solid boundary cases: real file, unrelated/nonexistent file (exercises the catch branch), and undefined argv1. That's good boundary coverage per the "exact thresholds, null inputs" guidance, even though this is a hotfix rather than a milestone-doc-driven feature.
• Single commit makes red→green ordering unverifiable from history, but the PR description states the test was written to capture the regression first, and the diff is coherent with that.
• Commit message follows conventional commits (fix: ...).
• The inline comment on isDirectRun explains a genuinely non-obvious constraint (why the realpath resolution is required) rather than restating what the code does — consistent with the repo's comment policy.

Product principles

• Directly restores principle M0: scaffold and core type contracts #1 (zero-config first run via npx gitgotchi) which was fully broken in 0.1.0 — appropriately treated as critical.
• Doesn't touch src/engine/** or src/collectors/**, so purity/never-throw rules aren't in play here.
• Version bump 0.1.0 → 0.1.1 in package.json/package-lock.json is consistent and appropriate for a hotfix; PR body correctly flags that 0.1.0 should be deprecated on npm post-merge.

Minor, non-blocking note

• Nothing I'd hold up the merge for. One nit: the catch branch in isDirectRun is exercised implicitly (via the nonexistent other.js path) rather than an explicit dedicated case — fine as-is, just noting it for anyone re-reading later.

Verification note: I was not able to run npm test/npm run typecheck/npm run lint locally in this sandbox (npm ci requires approval that isn't available in this context), so I relied on manual review of the diff and cross-checked the fix against Node's documented ESM entry-point detection pattern. The PR description states 131 tests green, typecheck + lint clean — worth confirming via CI before merge.