canon 0.4.0

Compile-safe Flutter navigation from a single grammar.

0.4.0

• Self-pop: popToXx now reaches the previous occurrence of the screen you're on (resolvePop skips the current top) instead of no-opping, and it's chainable through a cycle — popToProfile().popToProfile() steps back two. Cycle-member pops are now on union navs too so chains keep a handle that still exposes them. (Relative/absolute "by n / at depth n" are just chaining + the depth getter — no extra verbs.) Generator no longer emits an unused _endsWith helper for trees that don't use .under.

0.3.0

• Cycle navigation: NavGraph.countOf(screen, [id]) for cycle depth, a depth getter on cyclic nav handles (Screen.at case XNav(:depth) when depth > 1), the one-shot Screen.on(.x([id]).depth(n)) exact-match gate (compile-gated to cyclic screens), and throwing cycle-member popToX verbs guarded by those depth checks.

0.2.1

• Handle verbs (goX/go(Hop)) are edge-required: a target unreachable from the live top throws instead of silently teleporting via the canonical fallback, and guaranteed pop/popTo throw when impossible — both release-active (replacing debug-only asserts). Stale-but-still-legal navigations still resolve; the global Screen.goX teleport is unchanged.

0.2.0

• Stale-codegen guard: Screen.isCodegenFresh + a boot-time assert flag a tree that was re-parented without regenerating.
• Replace the again back-edge with cycled (folds a completed duplicate cycle) and stacked (stacks a fresh instance, preserving history).

0.1.0

• Initial release.