Refine stemmer core, compiled trie workflow, tests, and public documentation

feat: implement Compile CLI for building binary stemmer tables from source dictionaries
feat: add loading support for persisted compiled tries, including GZip-compressed binaries
feat: add a builder path for recreating a writable trie from a compiled trie
feat: expose read-only value/count access for compiled trie entries
feat: support deterministic NOOP patch encoding for identical source and target words

fix: make value selection deterministic for equal frequencies using length and lexical tie-breakers
fix: preserve valid alternative reductions during trie optimization and reduction
fix: correct patch command edge cases discovered in round-trip and malformed-input tests
fix: address persistence and compiled-trie handling defects found during implementation review
fix: resolve test failures and behavioral regressions uncovered by PMD and JUnit runs

refactor: reorganize trie-related support types into dedicated packages and classes
refactor: simplify the core FrequencyTrie design toward a cleaner practical architecture
refactor: improve compiled/read-only trie boundaries without restoring mutability
refactor: clean up internal reduction, serialization, and helper structure

test: add professional JUnit coverage for stemmer core classes
test: split trie tests into dedicated test classes per production type
test: improve parameterized tests for readability, diagnostics, and edge-case traceability
test: cover positive, negative, malformed, persistence, and round-trip scenarios
test: verify compiled dictionaries against source inputs using getAll semantics

docs: write public README and supplementary Markdown documentation for project publishing
docs: document architecture, reduction model, built-in languages, and operational guidance
docs: clarify reverse-word storage, mutable construction, and compiled-trie runtime behavior
docs: remove placeholders, vague buzzwords, and unexplained terminology from the documentation
docs: improve examples and wording for professional reader-facing project guidance

chore: align project materials with the practical Radix scope and Egothor/Stempel lineage
chore: raise overall project quality through documentation review and test hardening

build.gradle

@@ -8,6 +8,10 @@ plugins {
 group = 'org.egothor.stemmer'
 version = gitVersion(prefix:'release@')
 
+configurations {
+    mockitoAgent
+}
+
 pmd {
     consoleOutput = true
     toolVersion = '7.20.0'
@@ -27,16 +31,24 @@ dependencies {
     testImplementation platform(libs.junit.bom)
     testImplementation libs.junit.jupiter
     testRuntimeOnly libs.junit.platform.launcher
+
+    testImplementation libs.mockito.core
+    testImplementation libs.mockito.junit.jupiter
+    
+    mockitoAgent(libs.mockito.core) {
+        transitive = false
+    }
+}
+
+tasks.withType(Test).configureEach {
+    useJUnitPlatform()
+    jvmArgs += "-javaagent:${configurations.mockitoAgent.singleFile}"
 }
 
 application {
     mainClass = 'org.egothor.stemmer.Compile'
 }
 
-tasks.test {
-    useJUnitPlatform()
-}
-
 javadoc {
     failOnError = false