Brill--Noether theory for Kuznetsov components and refined categorical Torelli theorems for index one Fano threefolds

We show by a uniform argument that every index one prime Fano threefold $X$
of genus $g\geq 6$ can be reconstructed as a Brill--Noether locus inside a
Bridgeland moduli space of stable objects in the Kuznetsov component
$\mathcal{K}u(X)$. As an application, we prove refined categorical Torelli
theorems for $X$ and compute the fiber of the period map for each Fano
threefold of genus $g\geq 7$ in terms of a certain gluing object associated
with the subcategory $\langle \mathcal{O}_X \rangle^{\perp}$. This unifies
results of Mukai, Brambilla-Faenzi, Debarre-Iliev-Manivel, Faenzi-Verra,
Iliev-Markushevich-Tikhomirov and Kuznetsov.