0.17.0

More precise change impact: a change to a class constant or enum case now pins to the code that reads it, instead of coarsely flagging the whole class.

Added

• Class-constant and enum-case member references. A changed class constant or enum case could not be pinned to a member node — only methods could — so the impact walk seeded the whole class and reported "low confidence: a coarse class-level estimate". richter now gives constants and enum cases their own graph nodes and draws a references-constant edge from every method that reads one, so a change to a constant or case pins to its actual readers and drops the low-confidence flag. Reads resolve to the constant's declaring class through the hierarchy, so a constant read via self::/static:: in a subclass still connects to the ancestor that declares it. The edge feeds the blast radius, richter:affected-tests, and the risk level (a constant read is a real value dependency). Documented under "Coverage beyond Brain".

  Scope, kept honest: a constant read whose owner can't be resolved to a scanned class (a dynamic $var::CONST, a vendor constant) reads UNRESOLVED, never "no impact"; a trait constant, a property ($fillable/$casts), and a class-level modifier still resolve coarsely to the class.

Internal

• GraphCache format version bumped: constants and enum cases are new graph nodes/edges, so warm caches invalidate rather than serving a pre-feature graph.
• Suite: 831 tests / 1,942 assertions, including declaring-class resolution (inherited/interface constants), parameter-default and nested-anonymous-class reads, and a reachability check that a constant change pins to its readers without low confidence.

Full Changelog: v0.16.0...v0.17.0