Chore: release 1.2.0

[5PK]

Releases 1.2.0. This is the code published as 1.1.2-beta.0; the only change is the version number.

1.1.2-beta.0 added new features, so under semver this is a minor release (same reasoning as #233):

• PROD-2552: new agility verify command, which compares a synced target with its source and reports pass/fail with an exit code.
• PROD-2542: content is validated against the target model before it's sent. Items with missing required fields are skipped client-side and reported; preflight shows them as invalid.
• PROD-2773: warns when content references a CDN container that belongs to neither instance.
• PROD-2782: auto-publish republishes a page in another locale when a save in one locale put it in staging.

Validation on 1.1.2-beta.0, against a two-locale customer clone pair with the matching server fixes in production:

• full sync: 5,707 items checked, 0 changes, 0 failures, 10.9s;
• agility verify: every structural check matches (149/149 zones, 117/117 sitemap entries, 121/121 pages). The only remaining findings are 4 content-data issues in the source.

After merging: tag v1.2.0 on main (the publish workflow releases it under beta), then promote it with npm dist-tag add @agility/cli@1.2.0 latest.

🤖 Generated with Claude Code