chore: release

[hugrbot]

🤖 New release

• hugr-model: 0.26.1 -> 0.26.2 (✓ API compatible changes)
• hugr-core: 0.26.1 -> 0.26.2 (✓ API compatible changes)
• hugr-llvm: 0.26.1 -> 0.26.2 (✓ API compatible changes)
• hugr-persistent: 0.5.1 -> 0.5.2 (✓ API compatible changes)
• hugr: 0.26.1 -> 0.26.2 (✓ API compatible changes)
• hugr-cli: 0.26.1 -> 0.26.2 (✓ API compatible changes)

Changelog

hugr-model

0.26.0 - 2026-03-16

Testing

• Replace model text snapshots with roundtrip tests (#2933)
• Add missing width arg in model-call example (#2945)

hugr-core

0.26.2 - 2026-03-27

Bug Fixes

• Use valid identifiers when constructing AST model (#2973)
• Panic on constant folding with opaque consts (#2986)

New Features

• (py) Allow missing ext versions ExtensionDesc metadata (#2979)

Refactor

• Simplify validate_subtree (#2969)
• further cleanups to SiblingSubgraph + generalize over trait HugrConvexChecker (#2957)

hugr-llvm

0.26.2 - 2026-03-27

New Features

• (hugr-llvm) Emit rounding operation for FloatOps::fround extension ops (#2949)

hugr-persistent

0.5.0 - 2026-03-16

New Features

• (llvm) [breaking] Upgrade to LLVM 21 (#2901)
• [breaking] TypeRow: add impl From array of Type, remove From (#2784)

hugr

0.26.2 - 2026-03-27

Bug Fixes

• Use valid identifiers when constructing AST model (#2973)
• Panic on constant folding with opaque consts (#2986)

New Features

• (py) Allow missing ext versions ExtensionDesc metadata (#2979)

Refactor

• Simplify validate_subtree (#2969)
• further cleanups to SiblingSubgraph + generalize over trait HugrConvexChecker (#2957)

hugr-cli

0.26.2 - 2026-03-27

Bug Fixes

• Do extension resolution on exts loaded by hugr-cli (#2987)

New Features

• (py) Allow missing ext versions ExtensionDesc metadata (#2979)

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This PR was generated with release-plz.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.29%. Comparing base (3bd7a88) to head (8363589).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2975   +/-   ##
=======================================
  Coverage   81.29%   81.29%           
=======================================
  Files         239      239           
  Lines       45350    45350           
  Branches    39160    39160           
=======================================
  Hits        36866    36866           
  Misses       6493     6493           
  Partials     1991     1991           

Flag	Coverage Δ
python	88.91% <ø> (ø)
rust	80.08% <ø> (ø)

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[aborgna-q]

Make sure #2988 is fixed before releasing.