Module util 

Shared utilities used across multiple crates.

These live in pylon-kernel because core has no I/O dependencies and is already a dependency of every other crate.

Functions

epoch_to_iso

Convert Unix-epoch seconds to an ISO-8601 string.

is_leap

Check if a year is a leap year.

is_safe_file_id

Returns true if a user-provided file ID is safe to use as a path component. Rejects empty strings, .., slashes, and dotfiles.

now_iso

Current UTC time as an ISO-8601 string (second precision).

quote_ident

Quote a SQL identifier with double quotes to prevent injection. Embedded double quotes are escaped by doubling them (SQL standard, works in SQLite and Postgres).