Long overdue package updates

[cheefbird]

Context

Dependencies haven't really been updated in a year. Goal for this PR is to bring Angular, CDK/Material, and packaging tooling up to current versions THEN patch any vulnerable packages.

Target: 0 vulnerabilities found on npm audit.

Changes

• Upgraded Angular-related packages (ran ng update).
• Bumped @angular/material, @angular/cdk, and ng-packagr (-> 19.2.2).
• Synced package-lock.json to resolved versions.
• Added .nvmrc to match package.json engines.

What to verify (quick checklist)

• Install & build: npm ci && npm run build — fix compile/template errors.
• Tests: npm test and sandbox app/manual smoke test.
• Package output: validate library bundle/metadata (ng-packagr step).
• Peer deps: confirm no incompatible peer warnings for consumers.
• (Optional) Environment: use Node from .nvmrc and reinstall dependencies.

[slcwebguy]

praise: thank you for doing this 🙏

question: now we just have to figure out how to do a limble-tree deploy. I'm not ever done one myself but hopefully it won't be too bad. Of note: this tool is public facing.