┌─────────────────────────────────────────────────────────────┐
│                        UserMind            ▲ OWNED            │
│  User-level understanding (persists across all projects)    │
│  - Identity type, patterns, preferences, trust score        │
├─────────────────────────────────────────────────────────────┤
│                       ProjectMind          ▲ OWNED           │
│  Project-specific belief state (one per project/deal/habit) │
│  - Journey stage, momentum, derived summary & topics        │
└─────────────────────────────────────────────────────────────┘
                            ▲ reads / derives beliefs from
┌─────────────────────────────────────────────────────────────┐
│                   EvidenceSource           ▼ RENTED          │
│  Raw messages, actions, signals (your DB, Mem0, Zep, …)     │
│  - sxth-mind reads it; it is NOT the system of record       │
└─────────────────────────────────────────────────────────────┘

class UserMind:
    user_id: str                    # Your user's ID

    # Identity
    identity_type: str | None       # "hunter", "farmer", "visual_learner", etc.
    identity_data: dict             # Adapter-specific identity attributes

    # Patterns
    patterns: dict                  # Detected behavioral patterns
    preferences: dict               # User preferences

    # Engagement
    total_interactions: int         # Across all projects
    trust_score: float              # 0.0 to 1.0

    # Communication
    preferred_tone: str             # "direct", "encouraging", "patient"
    response_style: str             # "brief", "detailed", "socratic"

state = await mind.get_state("user_123")
user_mind = state["user_mind"]

# Check patterns
if user_mind["patterns"].get("follows_up_frequently"):
    # Adjust response accordingly
    pass

# Check identity
if user_mind["identity_type"] == "visual_learner":
    # Include more diagrams/examples
    pass

class ProjectMind:
    project_id: str                 # Your project identifier
    user_mind_id: str               # Link to parent UserMind

    # Journey
    journey_stage: str | None       # "prospecting", "qualifying", etc.
    momentum_score: float           # 0.0 to 1.0
    days_since_activity: int

    # Metrics
    interaction_count: int          # For this project
    trust_score: float              # Project-specific trust

    # Custom data (adapter-defined)
    context_data: dict              # Flexible context storage
    progress_data: dict             # Progress metrics

    # Derived conversation views (OWNED belief state, not raw bytes)
    conversation_summary: str | None
    topics: list[str]

# Different deals for a sales rep
await mind.chat("user_1", "Update on Acme", project_id="deal_acme")
await mind.chat("user_1", "BigCo wants a demo", project_id="deal_bigco")

# Different habits for a user
await mind.chat("user_1", "Did my workout", project_id="habit_exercise")
await mind.chat("user_1", "Read for 30 mins", project_id="habit_reading")

class Event:
    user_id: str
    project_id: str | None
    kind: str                       # "message" | "action" | "signal" | ...
    role: str | None                # for messages: user | assistant | ...
    content: str
    timestamp: datetime

# Early interaction
state = await mind.get_state("user_1")
# → {"patterns": {}, "identity_type": null, "journey_stage": "prospecting"}

# After 10 interactions
state = await mind.get_state("user_1")
# → {"patterns": {"follows_up_frequently": true, "prefers_email": true},
#    "identity_type": "hunter", "journey_stage": "negotiating"}

state = await mind.get_state("user_123", project_id="deal_acme")

user_mind = state["user_mind"]
project_mind = state["project_mind"]

print(f"Total interactions: {user_mind['total_interactions']}")
print(f"Journey stage: {project_mind['journey_stage']}")
print(f"Patterns: {user_mind['patterns']}")

explanation = await mind.explain_state("user_123", project_id="deal_acme")
print(explanation)

User: user_123
Total interactions: 15
Trust score: 0.72
Identity type: hunter

Project: deal_acme
Journey stage: negotiating
Interactions: 8
Momentum: 0.85