[tylerbutler]

Summary

• Allow set_* helpers to insert missing keys inside existing inline tables, including nested, dotted, and quoted paths.
• Preserve internal comments and unrelated values during edits. Reject blocked paths and ambiguous paths through arrays of tables with KeyConflict.
• Keep the existing public error variant for compatibility. Update API guidance, README, contributor instructions, and the changelog fragment.

Closes #65

Behavior boundary

The setters reject paths through arrays of tables instead of selecting a record by document order. Indexed record editing remains unsupported. Inline tables without comments can use normalized spacing; commented tables retain their existing source around the edit. No parser changes or new dependencies.

[github-actions]

Changelog check

package	fragments	version
tomlet	✅ 3	1.4.1 → 1.5.0

Release preview

tomlet 1.4.1 → 1.5.0

v1.5.0 - 2026-11-07

Added

• Support inserting missing keys inside existing inline tables with set_* helpers, including nested and dotted paths. Preserve internal comments during edits and reject ambiguous paths through arrays of tables with KeyConflict.

Fixed

• Decode basic-string escapes and multiline string values in accessors and decoders while preserving source text for round trips.
• Fix inserting keys into implicit parent tables when only child tables or arrays of tables exist.

[cloudflare-workers-and-pages]

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