This updates `src/solver/parallel_tactical2.cpp` with targeted
simplifications to align style and reduce local verbosity without
changing solver behavior. The changes are limited to member naming
consistency, cast style consistency, and a small `expr_ref` construction
cleanup.
- **`batch_manager` member naming consistency**
- Renamed the two outlier private fields to follow the existing `m_`
convention:
- `shared_clause_trail` → `m_shared_clause_trail`
- `shared_clause_set` → `m_shared_clause_set`
- Updated all corresponding reads/writes in clause collection, reset,
and clause-return paths.
- **Cast style consistency**
- Replaced C-style cast in thread count calculation with
`static_cast<unsigned>(...)` for consistency with style already used in
the file.
- **Simplified `expr_ref` construction in cube assembly**
- Collapsed default-init + assignment into direct construction when
pushing cube literals.
```cpp
// Before
expr_ref lit(g2l.to());
lit = g2l(cur->get_literal().get());
cube.push_back(std::move(lit));
// After
cube.push_back(expr_ref(g2l(cur->get_literal().get()), g2l.to()));
```
---------
Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: NikolajBjorner <3085284+NikolajBjorner@users.noreply.github.com>
