Bug Fixes
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Quality score stability: Enforce ResourceHealth monotonicity within a session. Score can only decrease (worsen) unless a compaction resets context. Prevents fill_pct measurement fluctuations from causing 10-20 point score swings in the statusline.
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False tool call warnings suppressed: Tool call threshold scaling changed from linear (5x) to superlinear (x^1.3) for 1M context windows, raising thresholds from warn=125/crit=200 to warn=202/crit=324. Additionally, tool call warnings are now gated on context fill >= 50%, since tool calls at low fill don't degrade instruction adherence.
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Two-row statusline: Status bar split into two rows for readability. Row 1: model, effort, project, context bar, ContextQ. Row 2: Eff, warnings, compactions, session duration, active agents. Session duration is now always visible (previously gated on quality < 75).
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Edge case hardening: Duration display guards against invalid timestamps (epoch 0, negative values, >7 day sessions). Monotonicity clamp handles corrupted cache where compaction count regresses.