Various improvements

[kommendorkapten]

No description provided.

[Copilot]

Pull request overview

This PR introduces various improvements to the deployment tracker, focusing on security, reliability, and testing. The changes include URL validation, rate limiting, improved retry logic with exponential backoff and jitter, template validation, and comprehensive test coverage.

Changes:

• Added security validations for API client URLs and organization names
• Implemented rate limiting and improved retry logic with exponential backoff
• Added template validation to ensure placeholders are present
• Enhanced error handling and graceful shutdown for the metrics server

Reviewed changes

Copilot reviewed 7 out of 8 changed files in this pull request and generated 2 comments.

Show a summary per file

File	Description
pkg/deploymentrecord/client_test.go	New comprehensive test suite for client initialization and configuration options
pkg/deploymentrecord/client.go	Added URL/org validation, rate limiting, improved retry logic with exponential backoff and jitter
internal/controller/controller.go	Updated to handle client creation errors and added debug logging for skipped containers
internal/controller/config_test.go	New test suite for template validation
internal/controller/config.go	Added ValidTemplate function to verify template contains placeholders
go.mod	Updated golang.org/x/time dependency version
cmd/deployment-tracker/main.go	Added worker count validation, template validation, and graceful metrics server shutdown

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