refactor(core)!: TaskHandle, security hardening, robustness, and test…

…/doc overhaul (#16)

refactor(core): TaskHandle, security hardening, robustness, and test/doc overhaul

refactor: implement comprehensive DRY patterns for actions

• Add generic BaseConstructor pattern to eliminate constructor boilerplate
• Create ParameterResolver for centralized parameter validation and resolution
• Implement OutputBuilder for standardized action output generation
• Refactor all File, System, and Docker actions to use new patterns
• Add comprehensive refactoring documentation and migration guide
• Reduce code duplication across 48+ action files while maintaining functionality

test: add cancellation, builder error, typed-helper fallback, manager…

… timeout/reset tests; adjust EntityValue task key fallback (#14)

fix: Make parameter return values consistent between WithParameter calls

chore: Update library documentation

[FEATURE] Add symlink action (#8)

[FEATURE] Add docker pull action

[FEATURE] Add ExtractFileAction (#6)

[FEATURE] Add some convenience methods for docker operations (#5)

[FEATURE] Add many new actions (#4)