refactor(agent): remove default context usage and update examples (#226)

fix(skills): support binary skill assets (#202)

Load skill assets as byte slices so image and other binary files are
preserved during discovery and execution.

Unify resource loading and workspace materialization around raw bytes so
assets are no longer lossy.

Update loader and toolset tests to cover binary assets and base64
resource output.

refactor(evaluator): rename package from evaluate to evaluator (#185)

add badge (#177)

add badge (#177)

add badge (#177)

add badge (#177)

add badge (#177)

add badge (#177)

deps: upgrade openai version to v3.8.1 (#154)