Fix compilation errors and add logging for filter and drop page actions

[Copilot]

• Fix missing ConfigurationSection import in SmartSpawner.java
• Fix TransferResult record fields (movedCount -> totalMoved, remainingCount calculation)
• Add logging when user filters an item in filter GUI
• Add logging for handleDropPageItems action
• Restore randomness to velocity calculations in handleItemDrop method
• Add SPAWNER_ITEM_FILTER and SPAWNER_DROP_PAGE_ITEMS event types to SpawnerEventType enum
• Fix lambda capture issue - itemsFound must be effectively final

Summary of Changes

Compilation Errors Fixed:

1. Added missing ConfigurationSection import in SmartSpawner.java
2. Fixed TransferResult field access (changed movedCount to totalMoved, calculated itemsLeft dynamically)
3. Fixed lambda capture issue in handleDropPageItems - made itemsFound effectively final by using a separate accumulator variable

Logging Enhancements:

1. Added logging for item filter toggle actions in FilterConfigUI
2. Added logging for drop page items action in SpawnerStorageAction
3. Added new event types to SpawnerEventType enum

Code Restoration:

1. Restored random velocity components in handleItemDrop method to match original implementation

All changes are minimal, surgical, and directly address the issues mentioned in the problem statement.

Original prompt

@copilot errors

Task :core:compileJava
ConfigurationSection loggingSection = getConfig().getConfigurationSection("logging");
^
symbol: class ConfigurationSection
location: class SmartSpawner
/home/runner/work/smartspawner/smartspawner/core/src/main/java/github/nighter/smartspawner/spawner/gui/storage/SpawnerStorageAction.java:692: error: cannot find symbol
.metadata("items_left", result.remainingCount)
^
symbol: variable remainingCount
location: variable result of type TransferResult
/home/runner/work/smartspawner/smartspawner/core/src/main/java/github/nighter/smartspawner/spawner/gui/storage/SpawnerStorageAction.java:691: error: cannot find symbol
.metadata("items_taken", result.movedCount)
^
symbol: variable movedCount
location: variable result of type TransferResult

Also can you add logging when user filter an item in filter gui? We also need to log handleDropPageItems action. And why do you remove the + (random.nextDouble() - 0.5) * 0.1 from the original vector velocity code, original:

        Vector velocity = new Vector(
              sinYaw * cosPitch * 0.3 + (random.nextDouble() - 0.5) * 0.1,
              sinPitch * 0.3 + 0.1 + (random.nextDouble() - 0.5) * 0.1,
              cosYaw * cosPitch * 0.3 + (random.nextDouble() - 0.5) * 0.1
      );
      ```

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[ptthanh02]

@copilot /home/runner/work/smartspawner/smartspawner/core/src/main/java/github/nighter/smartspawner/spawner/gui/storage/SpawnerStorageAction.java:330: error: local variables referenced from a lambda expression must be final or effectively final

Task :core:compileJava
.metadata("items_dropped", itemsFound)
^
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use or override a deprecated API that is marked for removal.
Note: Recompile with -Xlint:removal for details.
1 error

Task :core:compileJava FAILED

7 actionable tasks: 7 executed
FAILURE: Build failed with an exception.

[Copilot]

@copilot /home/runner/work/smartspawner/smartspawner/core/src/main/java/github/nighter/smartspawner/spawner/gui/storage/SpawnerStorageAction.java:330: error: local variables referenced from a lambda e...

Fixed in commit 5af9238. The issue was that itemsFound was being modified in a loop, making it not effectively final. I've refactored to use a separate accumulator variable itemsFoundCount during the loop, then assign it to a final itemsFound variable before the lambda expression.