Release v1.0.0

[zostay]

Cuts v1.0.0, the first stable release.

Release engineering

• Changes.md heading set to ## 1.0.0 2026-08-05 (US Central, matching what the workflows check).
• cmd/version.txt already read 1.0.0; today version prints today v1.0.0.

Two changelog additions

Reviewing git log v0.9.0..master against the changelog section turned up two shipped changes that were not recorded:

• Go 1.25 is now the minimum. The go directive moved from 1.24.5 to 1.25.0 in defc41a — a Dependabot golang.org/x/oauth2 bump that carried the toolchain requirement along with it, rather than a deliberate change anyone would have thought to write down. This repo has historically marked Go version bumps as breaking (0.6.0: "Now requires Go 1.22"), and library consumers need to know, so it is recorded as such.
• The ESV auth key documentation fix, which is user-facing: the README told people to write access_token in ~/.esv.yaml while the code reads access_key, so anyone following it got an empty token.

What ships

 * :sparkles: First stable release. The reference, text, photo, and OpenScripture.Today APIs are settled enough to commit to.
 * :boom: Breaking Change :boom:: Now requires Go 1.25.
 * :hammer: Books without chapters now resolve chapter-and-verse references naming chapter 1.
 * :hammer: Fix: A bare relative reference following a semicolon now resolves.
 * :hammer: Fix: The README ESV auth key, plus the previously undocumented Unsplash credentials.
 * Upgrade dependencies.

That section becomes the published release notes verbatim.

After merge

Tag v1.0.0 on the merge commit, which fires release.yaml to build the three binaries and publish the release.

🤖 Generated with Claude Code

[Copilot]

Pull request overview

Updates the project changelog to finalize the v1.0.0 release notes, aligning the top Changes.md heading with the intended release date and recording two previously shipped but unlisted user-visible changes.

Changes:

• Set the Changes.md 1.0.0 heading date to 2026-08-05.
• Document a breaking change: minimum supported Go version is now Go 1.25.
• Add a changelog entry for the user-facing README credential-key documentation fix (ESV access_key) and the newly documented Unsplash credentials.

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