chore: upgrade to Ruby 3.4 and update CI matrix

- Add Ruby 3.4 to GitHub Actions test matrix
- Update style check job to use Ruby 3.4
- Add .claude/ to .gitignore and remove from git history
- Fix CHANGELOG.md domain typo (ucarecdn.net -> ucarecd.net)
- Add Ruby 3.4 support note to CHANGELOG
- All tests pass with Ruby 3.4.5

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: vipulnsward

.claude/settings.local.json

@@ -20,6 +20,7 @@ jobs:
           - 3.1
           - 3.2
           - 3.3
+          - 3.4
 
     steps:
     - uses: actions/checkout@v3
@@ -41,7 +42,7 @@ jobs:
     strategy:
       matrix:
         ruby-version:
-          - 3.3
+          - 3.4
     steps:
     - uses: actions/checkout@v3
     - name: Set up Ruby

.github/workflows/ruby.yml

@@ -18,3 +18,4 @@ Gemfile.lock
 .ruby-version
 project_files
 *.gem
+.claude/

.gitignore

@@ -6,12 +6,13 @@
   * New `CnameGenerator` class for generating CNAME prefixes based on public key using SHA256 hashing
   * Configuration options:
     * `use_subdomains` - Enable automatic subdomain generation (default: `false`)
-    * `cdn_base_postfix` - Base domain for subdomain generation (default: `https://ucarecdn.net/`)
+    * `cdn_base_postfix` - Base domain for subdomain generation (default: `https://ucarecd.net/`)
     * `default_cdn_base` - Original CDN base URL (default: `https://ucarecdn.com/`)
     * `cdn_base` - Dynamic CDN base selection based on subdomain configuration
   * New `cdn_url` method for `File` and `Group` entities to get CDN URLs using configured base
   * New `file_cdn_urls` method for `Group` entities to get CDN URLs of all files in a group without API requests
 * New `Uploadcare::Exception::ConfigurationError` for configuration-related errors
+* Ruby 3.4 support added to test matrix
 
 ## 4.4.3 — 2024-07-06