Nomad changes

docs/snippets/kotlin/plugins/word_count_processor.md

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+```kotlin title="Kotlin"
+import dev.kreuzberg.*
+
+class WordCountProcessor : IPostProcessor {
+    override fun name(): String = "word-count"
+    override fun version(): String = "1.0.0"
+
+    override fun process(result: ExtractionResult, config: ExtractionConfig) {
+        val wordCount = result.content().split(Regex("\\s+")).count { it.isNotEmpty() }
+        // ExtractionResult is an immutable record on the Java side; observe
+        // and report rather than mutate.
+        println("[word-count] ${result.mimeType()} -> $wordCount words")
+    }
+
+    override fun processing_stage(): ProcessingStage = ProcessingStage.Early
+
+    override fun should_process(
+        _result: ExtractionResult,
+        _config: ExtractionConfig,
+    ): Boolean = _result.content().isNotEmpty()
+
+    override fun estimated_duration_ms(_result: ExtractionResult): Long = 1L
+
+    override fun priority(): Int = 50
+}
+
+fun registerWordCountProcessor() {
+    PostProcessorBridge.registerPostProcessor(WordCountProcessor())
+}
+```