Standardize Makefile help target

Add sponsors section

Add Copilot instructions

Address review feedback: simplify concurrency group and use = for flags

Use static concurrency group for Fly.io deployments

Fix timeout unit to be consistent with lease-timeout

Fix Fly.io deployment lease conflict issues

Bump time from 0.3.44 to 0.3.47

Bump bytes from 1.10.1 to 1.11.1

Remove ARM/v7 support - wkhtmltopdf package not available

Build Docker images for multiple architectures

fix tests for tag pipelines

Optimize Fly.io concurrency and timeout configuration

Validate Docker image is working (#28)

Update CI steps (#27)