feat: added Switcher Remote flag for Hybrid Mode

[petruki]

This pull request introduces Hybrid Mode to the Switcher Go SDK, allowing users to selectively force remote evaluation on a per-call basis even when Local Mode is enabled. It adds the Switcher.Remote() method, updates documentation to match, and includes comprehensive tests for the new behavior. Additionally, it improves formatting and vulnerability checks in the CI pipeline.

Hybrid Mode (force remote evaluation):

• Added forceRemote field to Switcher and implemented the Remote(force ...bool) method, enabling per-call override to force remote API usage even when Local Mode is active. Passing Remote(false) clears the override. Validation ensures this is only allowed when Local Mode is enabled. (switcher.go) [1] [2] [3] [4] [5]
• Comprehensive tests for Hybrid Mode, covering remote override, error cases, no-op clearing, and method chaining. (switcher_test.go)
• Updated documentation in README.md and ARCHITECTURE.md to describe Hybrid Mode, usage, and its effect on execution mode selection. Removed outdated TODOs and diagrams, and clarified the relationship between features and code. (README.md, ARCHITECTURE.md) [1] [2] [3] [4] [5]

CI/CD and tooling improvements:

• Added formatting checks to the CI pipeline (.github/workflows/master.yml, .github/workflows/staging.yml) and Makefile, ensuring code is properly formatted before tests run. (.github/workflows/master.yml, .github/workflows/staging.yml, Makefile) [1] [2] [3]
• Updated govulncheck version for vulnerability checks in CI and Makefile. (.github/workflows/master.yml, .github/workflows/sonar.yml, Makefile) [1] [2] [3]

Minor documentation update:

• Removed the "under development" status badge from README.md.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
100.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud