Modern watch command.
Features:
* Basic features of original watch command:
+ Execute command periodically, and display the result.
+ color output.
+ diff highlight.
* Time machine mode:
+ Rewind like video.
+ Go to the past, and back to the future.
* See output in pager.
* Vim like keymaps.
* Search text.
* Suspend and restart execution.
* Run command in precise intervals forcibly.
* Support shell alias
* Customize keymappings.
* Customize color.
Paths come from the repository package-file index for the observed builds. They describe archive/package associations, not every file that will exist on a running system after maintainer scripts, alternatives, generated state, diversions, or installation choices.
Each row is recorded package-index metadata for one version, architecture, suite, and repository. Names, URLs, and sizes are source-reported; a link is a potentially mutable retrieval location, not an OpenFactory redistribution claim or proof that OpenFactory retained the artifact bytes.
