Summary

This PR introduces a new move Invoke Taboo for Xmon and refactors Somniphobia to detect stamina gains via the OnUpdateMonState hook rather than only triggering on rest actions. These changes improve the expressiveness of the effect system and enable more nuanced move mechanics.

Key Changes

Somniphobia Refactor

• Changed trigger mechanism: Now activates on any stamina gain (resting, round-end regen, stamina-steal moves, etc.) via the OnUpdateMonState hook, rather than only on NO_OP (rest) actions
• Changed scope: Moved from a single global effect to local per-mon effects on both active mons, allowing the effect to be cleared when a mon switches out
• Updated step bitmap: Changed from RoundEnd | AfterMove to OnUpdateMonState | OnMonSwitchOut | RoundEnd with ALWAYS_APPLIES_BIT
• Damage logic: Triggers only on stamina gains (valueToAdd > 0) to avoid recursion when the damage itself updates HP
• Re-invocation: Calling Somniphobia while already active resets the duration rather than stacking

New Move: Invoke Taboo

• Mechanic: A -1 priority move that reads the opponent's move after they act, brands it as taboo, and applies a local effect to the opponent's mon
• Trigger: If the branded mon uses the tabooed move again before switching out, they fall asleep (via SleepStatus)
• Scope: The brand is cleared when the branded mon switches out (OnMonSwitchOut hook returns true)
• Implementation: Hybrid IMoveSet + BasicEffect that uses AfterMove to check for repeated moves and OnMonSwitchOut to clear the brand
• Move validation: Only brands actual move slots (0–3); ignores switch and rest/no-op actions

Test Coverage

• test_somniphobiaDamagesOnAnyStaminaGain: Validates that Somniphobia triggers on round-end stamina regen (non-rest gain) and does NOT trigger when a resting mon is already at full stamina (no gain)
• test_invokeTabooSleepsOnRepeatedMove: Confirms that repeating a tabooed move applies sleep status
• test_invokeTabooClearsOnSwitchOut: Verifies that the brand is cleared when the branded mon switches out

Deployment

• Updated SetupMons.s.sol to deploy InvokeTaboo alongside other Xmon moves
• Updated drool/moves.csv with Invoke Taboo move metadata

Notable Implementation Details

• Somniphobia's OnUpdateMonState hook guards against recursion by only triggering on stamina gains; the damage it deals (an HP delta) re-enters the hook but is ignored because the state variable is HP, not Stamina
• Invoke Taboo's move index packing stores the move slot directly in extraData and compares it against the packed move index from getMoveDecisionForBattleState, ensuring consistency across the branded move check and the trigger check
• Both moves use ALWAYS_APPLIES_BIT in their step bitmap to ensure their hooks fire even when the effect is not the active move

https://claude.ai/code/session_01D3pJ3pS1brczwbbfRSYeoV