build(deps): update phel-lang/phel-lang requirement from ^0.50 to ^0.51 in the phel group

[dependabot]

Updates the requirements on phel-lang/phel-lang to permit the latest version.
Updates phel-lang/phel-lang to 0.51.0

Release notes

Sourced from phel-lang/phel-lang's releases.

0.51.0 - Only Once

Mutation testing + smarter test runner, 18-24% faster compiles, big runtime/stdlib speedups, 20% faster boot.

🎉 Added

• phel mutate: mutation testing for Phel with 11 mutators, parallel and changed-file modes, coverage selection, and MSI gates. (#3208 #3209)
• phel test gains --changed[=<ref>], --reporter=github, per-test coverage JSON, ^:skip / ^:focus / skip! with --fail-on-focus, and phel.test/*event-hook*. (#3207 #3209 #3210 #3211 #3214)
• phel format --exclude=<glob> and the matching format-exclude config key. (#3233)
• cache-env-vars: environment values that take part in the compiled-code cache key. (#3236)
• Clojure-style binding-first map destructuring, nested bindings included. (#3115)
• ^:redef, which keeps a call interceptable where -O2 would inline it. (#3126)
• CSS-style id and class shorthand in phel.html element tags. (#3240)
• phel.ai/*sleep-fn*, a bindable retry backoff seam. (#3204)
• A bare local defexception name now resolves in catch. (#3211)
• Public API: Shared\Process\PhelBinaryLocator, Shared\DeprecationResolver, per-test coverage, and immediate compiled-code cache flushing. (#3203 #3209 #3243)

⚖️ Changed

• Render the changelog's ### Performance section in the GitHub release notes, and stop listing the same contributor twice when their commits carry different capitalisation. (#3258)
• tools/release.sh accepts a pre-release version (1.0.0-rc1): it leaves ## Unreleased in place and publishes the GitHub release as a pre-release. (#3253)
• Document the two release-time documentation steps no tooling performs, and mark the paragraph in the stability policy that flips at a major. (#3254)
• Registry::addDefinition() also accepts a Closure returning the metadata map. Widening a parameter is not breaking, and the eager form still works, so an artifact compiled earlier stays loadable. (#3250)
• Resolve bare all-caps PHP names by position instead of autoload state. See ADR 0016. (#3064)
• Expose compiler environment and deprecation controls through CompilerFacadeInterface. (#3048)

⚡ Performance

Compiler:

• Evaluate the emission already produced instead of emitting every form a second time: 18% faster to compile and evaluate. (#3249 #3257)
• Emit each form once under phel compile --emit-only: 24% faster, byte-identical output. (#3246)
• Reuse the lists a macro expansion leaves unchanged: 5% faster analysis of macro-heavy source. (#3246)
• Resolve a call's phel.core identity once per node rather than once per specialisation probe: 4% faster emission. (#3246)
• Compile is arms through one runtime helper, cutting generated size, compile time and memory. (#3212)
• Inline -O2 calls in return position. (#3125) Runtime:
• Answer contains?, map lookups and realized lazy sequences without repeating work already done: up to 22% faster. (#3245)
• Promote every map construction path at the same size, making grown map reads up to 5.5x faster. (#3172)
• Read non-dynamic globals straight from the registry: 1.9x. (#3179)
• Spread vectors into apply in one pass: 2.1x. (#3181)
• Give hot core functions fixed arities: up to 22x. (#2973) Standard library:
• Build mapv and filterv directly instead of through a lazy sequence vec then tears down: 3.5x and 2.8x. (#3251)
• Give update-in the fixed arities update has: 32% faster, and assoc-in 27%. (#3251)
• Build the walked list and the pprint joins once instead of through a spread: 57% and 23% faster. (#3248)
• Write into's targets through transient methods, and reverse and escape natively in phel.string. (#2973) Test framework:
• Record an assertion against one rebuild of the counts map instead of two nested walks, halving the per-assertion bookkeeping. (#3247) Boot:
• Carry a definition's metadata as a thunk forced on first read, so loading a namespace no longer builds a map per definition: phel.core loads 20% faster, peak memory 22MB to 20MB. (#3250)
• Skip Gacela's event dispatch when no listener is registered; a host that wants the events sets GacelaConfig::setEventDispatcher().

⚠️ Deprecated

• to-php-array; use its Clojure-aligned alias to-array. (#3076)
• Key-first map destructuring ({:key local}); use binding-first ({local :key}). (#3115)

🐛 Fixed

• Name the namespace and the fix when an exported wrapper cannot resolve its definition, instead of failing with Value of type null is not callable. (#3244)

... (truncated)

Changelog

Sourced from phel-lang/phel-lang's changelog.

0.51.0 - 2026-09-05

Added

• phel mutate: mutation testing for Phel with 11 mutators, parallel and changed-file modes, coverage selection, and MSI gates. (#3208 #3209)
• phel test gains --changed[=<ref>], --reporter=github, per-test coverage JSON, ^:skip / ^:focus / skip! with --fail-on-focus, and phel.test/*event-hook*. (#3207 #3209 #3210 #3211 #3214)
• phel format --exclude=<glob> and the matching format-exclude config key. (#3233)
• cache-env-vars: environment values that take part in the compiled-code cache key. (#3236)
• Clojure-style binding-first map destructuring, nested bindings included. (#3115)
• ^:redef, which keeps a call interceptable where -O2 would inline it. (#3126)
• CSS-style id and class shorthand in phel.html element tags. (#3240)
• phel.ai/*sleep-fn*, a bindable retry backoff seam. (#3204)
• A bare local defexception name now resolves in catch. (#3211)
• Public API: Shared\Process\PhelBinaryLocator, Shared\DeprecationResolver, per-test coverage, and immediate compiled-code cache flushing. (#3203 #3209 #3243)

Changed

• Render the changelog's ### Performance section in the GitHub release notes, and stop listing the same contributor twice when their commits carry different capitalisation. (#3258)
• tools/release.sh accepts a pre-release version (1.0.0-rc1): it leaves ## Unreleased in place and publishes the GitHub release as a pre-release. (#3253)
• Document the two release-time documentation steps no tooling performs, and mark the paragraph in the stability policy that flips at a major. (#3254)
• Registry::addDefinition() also accepts a Closure returning the metadata map. Widening a parameter is not breaking, and the eager form still works, so an artifact compiled earlier stays loadable. (#3250)
• Resolve bare all-caps PHP names by position instead of autoload state. See ADR 0016. (#3064)
• Expose compiler environment and deprecation controls through CompilerFacadeInterface. (#3048)

Performance

Compiler:

• Evaluate the emission already produced instead of emitting every form a second time: 18% faster to compile and evaluate. (#3249 #3257)
• Emit each form once under phel compile --emit-only: 24% faster, byte-identical output. (#3246)
• Reuse the lists a macro expansion leaves unchanged: 5% faster analysis of macro-heavy source. (#3246)
• Resolve a call's phel.core identity once per node rather than once per specialisation probe: 4% faster emission. (#3246)
• Compile is arms through one runtime helper, cutting generated size, compile time and memory. (#3212)
• Inline -O2 calls in return position. (#3125)

Runtime:

• Answer contains?, map lookups and realized lazy sequences without repeating work already done: up to 22% faster. (#3245)
• Promote every map construction path at the same size, making grown map reads up to 5.5x faster. (#3172)
• Read non-dynamic globals straight from the registry: 1.9x. (#3179)
• Spread vectors into apply in one pass: 2.1x. (#3181)
• Give hot core functions fixed arities: up to 22x. (#2973)

Standard library:

• Build mapv and filterv directly instead of through a lazy sequence vec then tears down: 3.5x and 2.8x. (#3251)
• Give update-in the fixed arities update has: 32% faster, and assoc-in 27%. (#3251)
• Build the walked list and the pprint joins once instead of through a spread: 57% and 23% faster. (#3248)
• Write into's targets through transient methods, and reverse and escape natively in phel.string. (#2973)

... (truncated)

Commits

• 1194f22 chore(release): v0.51.0
• 3c8c7a3 fix(release): render the Performance section and dedupe a contributor (#3258)
• 763b3f6 docs(release): name the release-time steps no tooling performs (#3256)
• 43f712a perf(compiler): evaluate the emission already produced, when it matches (#3257)
• ae58f18 feat(release): let the release script cut a release candidate (#3255)
• 5716d64 perf(core): build mapv and filterv directly, and give update-in fixed arities...
• 61803b0 perf(compiler): pay for definition metadata when it is read (#3250)
• 59f8e8e perf(stdlib): build the walked list and the pprint joins once (#3248)
• 8237266 perf(test): rebuild the counts map once per assertion, not twice (#3247)
• 8107d44 perf(compiler): stop emitting, rebuilding and re-deriving what is already kno...
• Additional commits viewable in compare view

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