[kvlonge]

Why

With a selection, sqb plan, sqb build and sqb rules run --select evaluated model-scoped rules on the selection's slice of the project. A custom rule that reads ctx.graph.dependents(model) then saw only the selected dependents, so it could report findings that sqb compile does not, and selected jobs failed even though the project compiled cleanly. #1198 fixed this for project-wide rules only.

Changes

• Selected runs evaluate every built-in and custom rule over the whole project, using compile's rules config with every exception. They reuse compile's rules cache and the early built-in speculation, and report only findings on selected models and on files that are not models. A project that compiles cleanly now passes every selection.
• SQL lint rules still check each selected file on its own.
• Removes the separate whole-project pass and its cache directory from fix: evaluate project-wide rules over the whole project on selected runs #1198.
• Docs: rules execution and caching page.

Verification

• New E2E cases: a custom rule reading ctx.graph.dependents under plan --select. The reported case passes; the case reproduced on a released sqb and fails there.
• Focused rules, compile-selection and early-rules E2E and integration tests pass. The two wall-clock performance guards were over budget on a loaded machine; their compile path is unchanged.
• make check-ci passes.