Model Mapped Array with element context #134

Problem

Bastion stops at not_modeled: "value mappedArray". On the wright Bastion fixture the stop is tick 1, rule 20 [Hero/Ana] Display sleep HUD, action 3. athena#56 excluded Mapped Array ("Map-free forms only").

Scope

Model Mapped Array with the element-context rules already used by Filtered Array, Sorted Array, Is True For All and Is True For Any: Current Array Element and Current Array Index bind per element, nested use follows the same rule as the existing forms. Semantics follow workshop-rs. Array and null coercions follow docs/architecture.md.

Non-goals

No other array or value construct. No change to the wait behavior under a 90% simulation rate (a separate stop at tick 91 on the reference bastion.ow).

Acceptance criteria

• Unit tests for Mapped Array with a boundary case each for an empty array, a null operand, a non-array operand, and nested element context.
• A non-finite mapped result stops not_modeled through the existing produced_number path.
• The Bastion run on the wright fixture moves past value mappedArray. The PR body records the next stop.
• docs/simulator-interface.md and docs/findings.md updated in the same PR. A construct without a passing capture fixture is recorded as modeled-not-measured.
• Standard gates pass: fmt, clippy -D warnings, tests, wasm32 build.