chore(main): release 0.26.0

[release-please]

🤖 I have created a release beep boop

0.26.0 (2026-07-13)

Features

• internal/gem: add gem package to install Ruby gem tools (#6724) (40ba6df)
• internal/librarian/java: add ApplyMoveActionsToLibrary helper and unit tests (#6731) (f25bd33)
• internal/librarian/java: add RestructureToLibrary helper and unit tests (#6757) (b2ff68c), closes #6516
• internal/librarian/java: add ToKeepSet helper and unit tests (#6730) (df99304), closes #6516
• internal/librarian/java: integrate native Go postprocessor into Java generator (#6768) (074059d), closes #6516
• internal/librarian/java: mark legacy postprocessing for deprecation (#6716) (78a4ab6), closes #6516
• internal/librarian/nodejs: use cache and bin directories for nodejs install (#6680) (7f88869)
• internal/librarian/php: add inital PHP client library generator (#6703) (9a45ab1)
• internal/librarian/php: add tool installation directory helpers (#6717) (9cdf0b5), closes #6630
• internal/librarian/ruby: support installing Ruby gem dependencies (#6751) (bbce2c4), closes #6634
• internal/librarian: add ruby tools directory to env output (#6781) (c220d71)
• internal/postprocessing: add Apply pipeline runner and tests (#6714) (5cb8f66), closes #6516
• internal/postprocessing: add ApplyMethodOperations batch runner and tests (#6698) (8377d53), closes #6516
• internal/postprocessing: add applyToFiles and RemoveFiles (#6673) (2f4b437), closes #6516
• internal/postprocessing: add CopyFiles batch runner and tests (#6686) (20c3a1a)
• internal/postprocessing: add ReplaceAll and ReplaceRegexAll batch runners and tests (#6688) (bb18f06)
• internal/protoc: add protoc installation and use installed protoc in Java generation (#6622) (00ee24d)
• internal/protoc: add Run function (#6699) (cd8a1d4), closes #6558
• internal/serviceconfig: allowlist API paths for php (#6789) (7907686), closes #6629
• internal/tool/gem: verify input directories and tools before installation (#6778) (3086d63)
• java: append versions.txt on add (#6653) (9e9e645)
• librarian/internal/config: add php config (#6701) (939ae6f)
• migrate: discover and list PHP libraries during migration (#6728) (e552b89)
• sidekick/parser: correct LRO poller service (#6704) (1d4b2d1)
• sidekick/rust: remove unstable gate for LRO tracing (#6459) (8266ce3)
• sidekick/swift: discovery LROs (#6738) (c294d15)
• sidekick/swift: generate deprecation attributes (#6750) (145e8ae)
• sidekick/swift: traits with dependencies (#6709) (e8389f2)
• swift: add protobuf generation support (#6697) (3bebf26)
• tool/cmd/migrate/php: scaffold composer tools for php (#6736) (f23b451)
• tool/cmd/migrate: add support to php (#6726) (586bac0), closes #6723
• tool/cmd/migrate: support union versions in PHP OwlBot configs (#6782) (7690206), closes #6779

Bug Fixes

• internal/librarian/java: remove excluded_poms from repometadata (#6676) (5e0f7f2)
• internal/librarian/php: enforce explicit API paths and add default output path (#6740) (347bbd6)
• internal/librarian: preserve gem tools during tidy (#6783) (0150007)
• internal/librarian: preserve maven and protoc configuration during tidy (#6702) (b439528), closes #6558
• internal/snippetmetadata: disable HTML escaping in JSON output (#6777) (4da5e28), closes #6776
• librarian/rust: detect inconsistent repos (#6766) (82ce5a9)
• sidekick/swift: missing enum value docs (#6727) (e9020d2)
• tool/cmd/migrate: populate API paths from .OwlBot.yaml during migrate for php (#6739) (6a15260)

---

This PR was generated with Release Please. See documentation.

[release-please]

🤖 Created releases:

• v0.26.0

🌻