Evaluate Create Workshop Setting values to their defaults #54

Problem

After athena#50 (PR #52), Bastion (/Users/teakowa/Repos/wrightkit/.task-scratch/bastion/bastion.ow, scenario .../bastion/scen.json) stops with not_modeled: "value createWorkshopSettingFloat" at tick 0. Bastion reads its mode settings through the Create Workshop Setting ... values (float, integer, bool, enum/combo, hero, string — check which Bastion uses).

Scope

• Evaluate the Create Workshop Setting value family to the setting's declared default, since the simulator runs one lobby with no player-edited settings. Honor the min/max semantics the workshop-rs catalog documents only as far as needed for the default; the value returned is the default argument.
• Provide a way for the scenario to override a setting by (category, name) only if the scenario format already has a place for it; otherwise leave overrides out and say so (no new scenario fields in this issue).
• A value with no passing capture fixture is recorded in docs/findings.md as modeled-not-measured, per AGENTS.md.

Acceptance criteria

• Tests: each Create Workshop Setting kind Bastion uses evaluates to its default; reading it inside a rule condition and an action argument works.
• The Bastion run moves past this stop; record the next stop in the PR body.
• docs/simulator-interface.md updated; fmt, clippy -D warnings, tests, wasm32 build pass.