Issue 10 (Resolved): Array[T] is a guardrail primitive, not speculative.
Same role as string helpers — forces single codepath, model-proof,
scannable. Ordered counterpart to Registry[T].
Issue 11 (Resolved): ConfigVar[T] promoted to documented primitive.
Solves "was this explicitly set?" tracking for layered config.
Typed counterpart to Option (which is any-typed).
Both follow the guardrail pattern: the primitive exists not because
Go can't do it, but because weaker models (Gemini, Codex) will
reinvent it inline every time — badly. One import, one pattern.
Added primitive taxonomy table showing the full picture:
strings→core.Contains, paths→core.JoinPath, errors→core.E,
maps→Registry[T], slices→Array[T], config→ConfigVar[T]
Co-Authored-By: Virgil <virgil@lethean.io>
b130309c3d