A bare '?' in YAML is an explicit-key indicator for a null key, which
produced a job with an empty name (p.Jobs[""]) — a parser invariant
violation caught by FuzzParseBytes.
ParseBytes now returns an error when keyNode.Value is empty.
Failing corpus entry retained as a seed so CI exercises this path.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
- Added comprehensive table-driven test suites for all packages:
cmd/glint, cicontext, fetcher, graph, linter, model, resolver.
Coverage reaches 98%+ statement coverage across the codebase.
- Replaced os.Exit calls in cmd/glint with an `exit` variable so tests
can capture exit codes without terminating the test process.
- Removed unreachable code found during coverage analysis:
dead guard in cicontext.parseRegexLiteral; dead len(jobs)==0 branch
in graph.Pipeline; skipWin struct field and dead continue in
graph.convertToPNG; pipelineSVG return type simplified to string.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>