fix(parser): preserve Team constants in Color slots

[e54-bot]

Refs #306

Changes

• Resolve bare Team 1 / Team 2 as Team identities in Color-typed slots when that member also exists in the Color catalog. Explicit Color(Team 2) remains a Color identity.
• Let canonical validation accept those shared Team/Color member identities, while rejecting Team members absent from Color.
• Cover en-US and zh-CN parse/emit round-trips and compare Team(/Hero(/Button(/Color( wrapper counts on the pinned OverPy-generated real-project fixtures.
• Document the domain-preservation rule.

Validation

• cargo fmt --all --check
• cargo clippy --workspace --all-targets -- -D warnings
• cargo test --workspace --all-targets — passed; 3 performance benchmarks ignored by the suite
• cargo run -p workshop-rs --bin workshop-catalog-gen -- check — passed (528 entries, 52 enum domains, 15 locales)
• git diff --check

Runtime evidence still needed

The Issue also asks whether a && b && c && d and nested And(And(And(a, b), c), d) have the same element cost in the Overwatch client. That comparison was not measured because this host has no Overwatch client installed or running. The parser/emission acceptance criteria pass; this runtime measurement remains open.