chore(main): release 1.6.0

[github-actions]

🤖 I have created a release beepboop

1.6.0 (2026-04-21)

Features

• builders/linux: install build_deps from catalog via workflow (ca9f41e)
• catalog: add build_deps field to ExtensionSpec (fff6a3a)
• catalog: add hard-tier PECL extensions (phase 2 B2) (035fb11)
• catalog: add top-10 PECL extensions (phase 2 B1) (e7bf8b4)
• catalog: enable PHP 8.1 core build (linux/x86_64/nts) (8ec7c18)
• catalog: enable PHP 8.2 core build (linux/x86_64/nts) (849724e)
• catalog: enable PHP 8.3 core build (linux/x86_64/nts) (2b87c9c)
• catalog: extend PECL extensions to PHP 8.1 ABI (38f2a01)
• catalog: extend PECL extensions to PHP 8.2 ABI (54037ff)
• catalog: extend PECL extensions to PHP 8.3 ABI (08ac39e)
• enable PHP 8.5 core + PECL rebuild (phase 2) (#37) (71589ef)
• phpup: extend runtime catalog with hard-tier PECL extensions (6bfbb30)
• phpup: extend runtime catalog with top-10 PECL extensions (0f3cf55)
• phpup: install runtime_deps.linux for PECL bundles (e844105)
• workflows: descriptive job names for build-extension / build-php-core (#45) (ea659f0)

Bug Fixes

• catalog: exclude igbinary on 8.5; swap affected fixture (2656f27)
• catalog: imagick runtime_deps package names on ubuntu-24.04 (8fac81b)

Documentation

• add Phase 2 aarch64 C1 design (infrastructure + cores) (66a0604)
• add Phase 2 hard-tier PECL extension design (slice B2) (1be8736)
• add Phase 2 top-10 PECL extension expansion design (slice B1) (da4f6f9)
• add Phase 2 version-expansion design (5779ca3)
• amend phase2-version-expansion — real fixture count (8), existing compat tests (d823a5a)
• readme: list PHP 8.1–8.5 as supported after phase 2 version expansion (69af03f)

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[github-actions]

🤖 Created releases:

• v1.6.0

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