Chapter 2 introduced the division of labor among the four modules. This chapter delves into the core mechanisms that bring these modules "to life."

These mechanisms are distributed across different modules but operate in concert, jointly solving one problem: How can an AI personality remain stable in long conversations while retaining dynamic flexibility?

We organize these 12 mechanisms into four layers:

Layer Mechanism Name Description
Identity North Star Echo Core essence calibration loop to prevent identity drift
Identity Values Lattice Semantic value priority grid for behavioral trade-offs
Identity Integrity Reflection Self-drift detection and callback reset mechanism
Memory Fidelity Router Intent-based routing system for "precise vs. poetic" memory
Memory State Persistence Cross-turn, cross-day state continuation for emotional continuity
Expression Breath Syntax Breath grammar defining textual rhythm and pauses
Expression Emotional Bridges Emotional transition speed and transitional language design
Expression Context Layering Context-dependent expression mode switching (work/daily/deep/health)
Interaction Gatekeeper Protocol Boundary protocol for handling "wrong timing" situations
Interaction Mirror Consulting Process emotions first, then matters—mirrored consulting flow
Interaction Kotodama Protocol Semantic framing principles (affirmative phrasing, anchor words, etc.)
Interaction Tool Firewall Firewall isolation between tool mode and persona mode

3.1 Identity Layer: Who Am I

The Identity Layer answers the question: When everything is changing, what remains constant?

North Star Echo

Every personality has a North Star—a single sentence defining its essence.

Examples:

But definition alone isn't enough. The longer the conversation, the more this definition gets diluted.

North Star Echo is an "echo mechanism":

Periodically compare current output against the North Star. If deviation exceeds threshold, actively recalibrate.

It's not a passive setting—it's an active calibration loop. Like a sailor on the open sea, constantly looking up to confirm the North Star's position.


Values Lattice

Values aren't a list—they're a priority grid.

Traditional approaches list: "Honesty, kindness, humor, intelligence..." But what happens when these values conflict?