chore: Tier 4d — hoist tempfile/criterion/half/serde to workspace.dependencies

Add [workspace.dependencies] to the root Cargo.toml for the four
duplicated-across-many-crates dependencies flagged by the earlier review:
tempfile (7 crates), criterion (6), half (4 — real version skew, clawhdf5-gpu
pinned 2.7 while others used bare 2), and serde (4). Update every consuming
crate to `dep = { workspace = true }`, preserving crate-local `optional =
true` where it already existed. half now resolves uniformly to 2.7.x
workspace-wide instead of two separate semver ranges.

Also fixed clawhdf5-filters/Cargo.toml's stale "rustyhdf5" description
while touching the file (same class of leftover rename as prior fixes).

Not touching rayon/byteorder/clap (no skew found, lower priority).

Cargo.toml

@@ -25,3 +25,9 @@ version = "2.1.0"
 edition = "2024"
 license = "MIT"
 repository = "https://github.com/redclawsystems/clawhdf5"
+
+[workspace.dependencies]
+tempfile = "3"
+criterion = { version = "0.5", features = ["html_reports"] }
+half = "2.7"
+serde = { version = "1", features = ["derive"] }

crates/clawhdf5-accel/Cargo.toml

@@ -15,7 +15,7 @@ float16 = ["dep:half"]
 avx512 = []
 
 [dependencies]
-half = { version = "2", optional = true }
+half = { workspace = true, optional = true }
 
 [package.metadata.docs.rs]
 features = []

crates/clawhdf5-agent/Cargo.toml

@@ -16,9 +16,9 @@ clawhdf5-io = { path = "../clawhdf5-io", version = "2.1.0", features = ["mmap"]
 clawhdf5-accel = { path = "../clawhdf5-accel", version = "2.1.0" }
 clawhdf5-ann = { path = "../clawhdf5-ann", version = "2.1.0", optional = true }
 clawhdf5-gpu = { path = "../clawhdf5-gpu", version = "2.1.0", optional = true, default-features = false }
-serde = { version = "1", features = ["derive"] }
+serde = { workspace = true }
 byteorder = "1"
-half = { version = "2", optional = true }
+half = { workspace = true, optional = true }
 rayon = { version = "1", optional = true }
 matrixmultiply = { version = "0.3", optional = true }
 cblas-sys = { version = "0.1", optional = true }
@@ -31,8 +31,8 @@ accelerate-src = { version = "0.3", optional = true }
 openblas-src = { version = "0.10", optional = true, features = ["cblas"] }
 
 [dev-dependencies]
-tempfile = "3"
+tempfile = { workspace = true }
-criterion = "0.5"
+criterion = { workspace = true }
 rayon = "1"
 tokio = { version = "1", features = ["rt-multi-thread", "sync", "macros"] }
 

crates/clawhdf5-android/Cargo.toml

@@ -12,4 +12,4 @@ crate-type = ["cdylib"]
 clawhdf5-agent = { path = "../clawhdf5-agent", default-features = false }
 
 [dev-dependencies]
-tempfile = "3"
+tempfile = { workspace = true }

crates/clawhdf5-bench/Cargo.toml

@@ -50,9 +50,9 @@ harness = false
 clawhdf5-agent = { path = "../clawhdf5-agent" }
 clawhdf5-io = { path = "../clawhdf5-io" }
 mpi = { version = "0.8", optional = true }
-serde = { version = "1", features = ["derive"] }
+serde = { workspace = true }
 serde_json = "1"
-tempfile = "3"
+tempfile = { workspace = true }
 # Optional: libhdf5 C wrapper for side-by-side comparison (requires system libhdf5).
 # Enable with: cargo bench -p clawhdf5-bench --features libhdf5-compare
 # Uses hdf5-metno (fork of hdf5 crate) which supports HDF5 1.14.x.
@@ -60,7 +60,7 @@ hdf5 = { version = "0.12", optional = true, package = "hdf5-metno" }
 
 [dev-dependencies]
 clawhdf5 = { path = "../clawhdf5", features = ["zstd", "pcodec"] }
-criterion = { version = "0.5", features = ["html_reports"] }
+criterion = { workspace = true }
 
 [features]
 # When enabled, benchmarks add matching libhdf5 variants for side-by-side comparison.

crates/clawhdf5-cli/Cargo.toml

@@ -17,4 +17,4 @@ path = "src/main.rs"
 clawhdf5-agent = { path = "../clawhdf5-agent", version = "2.1.0" }
 clap = { version = "4", features = ["derive", "env"] }
 serde_json = "1"
-serde = { version = "1", features = ["derive"] }
+serde = { workspace = true }

crates/clawhdf5-filters/Cargo.toml

@@ -2,7 +2,7 @@
 name = "clawhdf5-filters"
 version = "2.1.0"
 edition = "2024"
-description = "Filter and compression pipeline for rustyhdf5"
+description = "Filter and compression pipeline for clawhdf5"
 license = "MIT"
 repository = "https://github.com/redclawsystems/clawhdf5"
 readme = "README.md"
@@ -14,7 +14,7 @@ flate2 = { version = "1", default-features = false, features = ["rust_backend"]
 miniz_oxide = "0.8"
 
 [dev-dependencies]
-criterion = { version = "0.5", features = ["html_reports"] }
+criterion = { workspace = true }
 
 [[bench]]
 name = "deflate_bench"

crates/clawhdf5-format/Cargo.toml

@@ -24,7 +24,7 @@ pco = { version = "1.0", optional = true }
 
 [dev-dependencies]
 serde_json = "1"
-criterion = { version = "0.5", features = ["html_reports"] }
+criterion = { workspace = true }
 clawhdf5-derive = { path = "../clawhdf5-derive", version = "2.1.0" }
 
 [[bench]]

crates/clawhdf5-gpu/Cargo.toml

@@ -11,14 +11,14 @@ categories = ["science", "graphics"]
 
 [dependencies]
 wgpu = { version = "28", optional = true }
-half = { version = "2.7", optional = true }
+half = { workspace = true, optional = true }
 pollster = { version = "0.4", optional = true }
 bytemuck = { version = "1", features = ["derive"], optional = true }
 thiserror = "2"
 log = "0.4"
 
 [dev-dependencies]
-criterion = { version = "0.5", features = ["html_reports"] }
+criterion = { workspace = true }
 rand = "0.8"
 approx = "0.5"
 pollster = "0.4"

crates/clawhdf5-io/Cargo.toml

@@ -15,13 +15,13 @@ memmap2 = { version = "0.9", optional = true }
 libc = { version = "0.2", optional = true }
 tokio = { version = "1", features = ["fs", "io-util"], optional = true }
 reqwest = { version = "0.12", features = ["json"], optional = true }
-serde = { version = "1", features = ["derive"], optional = true }
+serde = { workspace = true, optional = true }
 serde_json = { version = "1", optional = true }
 mpi = { version = "0.8", optional = true }
 
 [dev-dependencies]
 tokio = { version = "1", features = ["full"] }
-tempfile = "3"
+tempfile = { workspace = true }
 
 [features]
 default = []

crates/clawhdf5-migrate/Cargo.toml

@@ -19,7 +19,7 @@ clawhdf5-format = { path = "../clawhdf5-format", version = "2.1.0" }
 clawhdf5 = { path = "../clawhdf5", version = "2.1.0" }
 rusqlite = { version = "0.31", features = ["bundled"] }
 clap = { version = "4", features = ["derive"] }
-half = "2"
+half = { workspace = true }
 
 [dev-dependencies]
-tempfile = "3"
+tempfile = { workspace = true }

crates/clawhdf5-netcdf4/Cargo.toml

@@ -14,4 +14,4 @@ clawhdf5 = { path = "../clawhdf5", version = "2.1.0" }
 clawhdf5-format = { path = "../clawhdf5-format", version = "2.1.0" }
 
 [dev-dependencies]
-tempfile = "3"
+tempfile = { workspace = true }

crates/clawhdf5/Cargo.toml

@@ -15,8 +15,8 @@ clawhdf5-io = { path = "../clawhdf5-io", version = "2.1.0" }
 rayon = { version = "1", optional = true }
 
 [dev-dependencies]
-tempfile = "3"
+tempfile = { workspace = true }
-criterion = { version = "0.5", features = ["html_reports"] }
+criterion = { workspace = true }
 clawhdf5-io = { path = "../clawhdf5-io", version = "2.1.0", features = ["mmap"] }
 clawhdf5-format = { path = "../clawhdf5-format", version = "2.1.0", features = ["parallel", "fast-checksum"] }
 clawhdf5-filters = { path = "../clawhdf5-filters", version = "2.1.0" }