This entry is not an identity, title, personality type, or moral status. It is a principle-intersection geometry used to map coherent expression, shadow risk, relational impact, timing, restoration, and scaling behavior.

2. Core Function

Creates safe passage between distinct fields.

3. Coherent Expression

connection without merger.

4. Shadow / Inversion Expression

forced integration, bridge as extraction channel.

5. Registry Mapping

Source depth: direct

6. Template Expansion Notes

The full ARCHETYPE-TEMPLATE.md expansion should add:

principle basis and Sigma boundaries
interface stack profile
operator and coupling profiles
scaling risks
diagnostics
restoration arc
AI-mediated use
symbolic / teaching translation

Entry Closure

Bridge-Builder maps a coherent agency pattern in the Threshold / Transition family and must remain audit-bound rather than identity-bound.