Tamiyo

13.4 Tamiyo — Strategic Controller

Responsibilities

• allocate parameter, compute, latency and churn budgets across regions;
• set maximum concurrent growth;
• establish global and regional cooldowns;
• balance exploitation and exploration allowances;
• set long-horizon priorities and risk ceilings;
• coordinate multiple Narset-controlled regions or cells;
• react to persistent trends rather than individual noisy steps;
• and emit versioned StrategicEnvelope records.

Inputs

• coarse Nissa summaries;
• Sarpadia history and regional performance;
• current host capacity and committed growth;
• aggregate Augustin and Emrakul outcomes;
• strategic task objectives;
• and global resource availability.

Outputs

• StrategicEnvelope;
• allocation updates;
• embargoes or emergency restrictions;
• and strategic-review requests.

Invariants

• Tamiyo operates on a slower cadence than Narset.
• It cannot name a candidate, graph node, kernel or blend tick.
• It cannot directly mutate alpha or issue a local lifecycle transition.
• All local resource use is traceable to an active envelope.

Smell

If Tamiyo chooses the next candidate or alpha increment, strategy has collapsed into micromanagement.