AKUNUR 3.1.0-alpha.8 VALIDATION REPORT

Scope
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Three-player Tactical post-qualification corner strategy. No game-rule changes.
The alpha.7 Still Point route planner is retained.

Focused validation
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PASS corner-strategy-test
  - ready third-corner conversion
  - sticky corner commitment / sustained-failure retarget
  - opponent two-corner threat targeting
PASS still-point-route-planner-test (all alpha.7 behaviours retained)
PASS three-player-ai-test
PASS multiplayer-progress-test
PASS reserve-lifecycle-test

Inherited regression
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PASS smoke, parity and alpha.11 rules regression
PASS player foundation and three-player manual rules
PASS result and analysis regression
PASS two-player Tactical regression
PASS two-player Strategic regression
PASS symmetry and seeded determinism
PASS replay/resume
PASS browser module smoke

Note: the monolithic `npm test` command exceeded the available execution-time
window while entering the computationally heavier three-player AI section.
The same component tests were then run in smaller groups and all passed.

Performance checks
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- repeated corner-formation analysis is cached per state revision;
- chosen target priority is calculated after move selection rather than for every candidate;
- immediate opponent Alignment threat checking uses cheap corner geometry;
- large corner-awarded Echo placement sets are pre-ranked before detailed scoring.

A 90-decision seeded observation remained consistent and produced Still Point
qualification/corner progress with active target-switch and anti-thrash metrics.
The three-player Tactical evaluator is still intentionally more expensive than
the two-player agent, and alpha.8 remains an observation build rather than a
large-batch balance-analysis agent.
