Mechanical sweep over `Inline::Text(_)` / `Code(_)` / `Strong(_)` / `Emph(_)`
construction and match sites under the new struct-variant shape introduced
in the previous commit. `Inline::Link { text, href }` is unchanged.
The snapshot test in `tests/blocks_snapshots.rs` previously projected
`ParsedBlock` into a `BlockView`/`PayloadView` shim because the old
`Inline` could not serialize. With the schema fix in place we now
serialize `ParsedBlock` directly through serde — the shim and its
`flatten_inline` helper are removed. Inlines surface as structured
objects (`{"kind":"text","text":"…"}` etc.). Regenerated
`nested-headings.blocks.snapshot.json` to reflect the new shape via
the existing `--ignored` emitter; `code-and-table.blocks.snapshot.json`
has no inlines and is unchanged.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
altair823
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