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Inspect single-line .env assignments for syntax, duplicate keys, empty values, shell portability, and credential-like values.
Supports single-line dotenv assignments, optional export, single or double quotes, and comments. It does not execute interpolation, commands, or multiline values. Masking is heuristic, so review the result before sharing.
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Limits: 500,000 input characters, 10,000 lines, 20,000 characters per line, 1,000 assignments, 200 diagnostics, 500,000 sanitized characters, 250,000 report characters, and 1,000 ms execution time.