…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 409033795
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 409300312
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)

…ynamic resize

Pull Request resolved: #21483

**Preserve immutable Linear and Q4 embedding shader controls across dynamic resize through typed parameter authorities.**

**Problem**
The Linear resize hook dropped has_bias, and the Q4 embedding resize path could drop is_linear_weight. Both defects produced correct build-time outputs but silently changed semantics after a live shape update.

**Solution**
- Before: build and resize populated control words independently, allowing immutable shader state to reset.
- After: each build/resize pair calls one typed helper while recomputing only live counts and dispatch.

**Implementation**
- Linear.cpp — make_linear_params preserves the bias flag across vec4 and tiled routes.
- EmbeddingQ4gsw.cpp — EmbeddingLayout and make_embedding_params preserve nibble layout across resize.
- Mirrors Vulkan runtime/graph/ops/impl/Linear.cpp and EmbeddingQ4gsw.cpp, which carry immutable shader controls through dynamic dispatch.

**Constraints**
WGSL bytes, shader selection, bindings, uniform sizes, queue-write counts, dispatch formulas, and pipeline topology are unchanged. Production handler code is smaller because duplicated field population and scalar captures are removed.

Co-authored-with: Claude Code.
ghstack-source-id: 411961489
@exported-using-ghexport

Differential Revision: [D113992326](https://our.internmc.facebook.com/intern/diff/D113992326/)