Update AGENTS.md

AGENTS.md

@@ -48,7 +48,15 @@ Use Gitea MCP for shared coordination. If unavailable, report the failure, buffe
 
 Use GPT-6 Astra exclusively. Delegate bounded independent research, design, implementation, or review when it improves progress, judgment, or preserves the parent's context. Give subagents the relevant context, ownership boundaries, result format, and evidence requirements. Use fresh critics when practical. The parent owns synthesis and integration and normally consolidates results into Gitea. Choose concurrency according to useful independent work and available resources, including other sessions; there is no agent-count quota.
 
-Use the highest available reasoning effort for orchestration and foundational semantic, methodological, formal, or cross-domain decisions. For subagents, use extra-high for difficult design, adversarial review, or unusually hard implementation; high for normal implementation, targeted research, correctness review, debugging, and runtime evaluation; medium for routine exploration, mechanical changes, builds, and tests; and lower for trivial work. Allocate by difficulty, not length, using supported controls; do not claim an unapplied change or alter global configuration merely to enforce these preferences.
+Optimize reasoning effort for verified outcomes per cost, including review, retries, and repair:
+
+Main agent: default to high for planning, synthesis, integration, and acceptance decisions; medium for dispatching a settled plan and routine coordination.
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+Subagents: default to medium for bounded implementation and targeted research; low for straightforward retrieval, mechanical edits, and running established checks; high for complex debugging, correctness review, adversarial analysis, or ambiguous design.
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+Use extra-high selectively for difficult foundational semantic, methodological, formal, or cross-domain decisions. Reserve max for exceptional unresolved problems where additional reasoning is likely to justify its cost. Retain higher settings when evidence supports their value.
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+Allocate by task difficulty and consequences, not role or length alone. Start higher when a clearly difficult decision has expensive downstream consequences. Escalate for concrete reasoning difficulties; resolve missing evidence or unclear requirements at their source. Set subagent effort explicitly through supported controls to avoid unintended inheritance. Do not claim an unapplied change or alter global configuration merely to enforce these preferences.
 
 ## Delegation and reasoning