Python fp and docs updtes (#58)

* refactor: Update comments for clarity and add expectations.json files for performance metrics

* feat: Implement FP guard for JS/TS local-collection receivers to suppress missing ownership checks

* feat: Enhance Rust parameter handling to classify local collections and prevent false ownership checks

* refactor: Simplify code formatting for better readability in multiple files

* refactor: Improve UTF-8 sequence length handling and enhance clarity in loop iteration

* feat: Update Java and Python patterns to include new security rules

* refactor: Improve comment clarity and consistency across multiple Rust files

* refactor: Simplify code formatting for improved readability in integration tests and module files

* refactor: Improve comment formatting and enhance clarity in assertions across multiple files

tests/benchmark/corpus/javascript/safe/safe_localised_gherkin_regex.js

@@ -0,0 +1,26 @@
+// js-safe-realrepo-006 — distilled from gogs `public/plugins/codemirror-5.17.0/
+// mode/gherkin/gherkin.js` line 107.  The CodeMirror Gherkin tokenizer ships
+// localised feature-keyword aliases as one large regex inside a boolean
+// sub-condition.  The CFG builder textualises every sub-condition of a
+// boolean chain and truncates that text to MAX_CONDITION_TEXT_LEN (256
+// bytes) for diagnostics; naive byte-slice truncation panicked when byte
+// 256 landed inside a multi-byte UTF-8 character (here Gurmukhi `ਖ`,
+// 3-byte UTF-8).  Engine fix:
+// `src/utils/snippet.rs::truncate_at_char_boundary`, applied at three CFG
+// sites and two symex display sites.  Invariant: scanning this file must
+// terminate without panicking the rayon worker, regardless of where byte
+// 256 lands inside the regex.
+
+function tokenLocalisedFeatureKeyword(stream, state) {
+    if (
+        !state.inKeywordLine &&
+        state.allowFeature &&
+        stream.match(/(機能|功能|フィーチャ|기능|โครงหลัก|ความสามารถ|ความต้องการทางธุรกิจ|ಹೆಚ್ಚಳ|గుణము|ಮುಹಾಂದರಾ|ਮੁਹਾਂਦਰਾ|ਨਕਸ਼ ਨੁਹਾਰ|ਖਾਸੀਅਤ|रूप लेख|وِیژگی|خاصية|תכונה|Функціонал|Функция|Функционалност|Функционал|Үзенчәлеклелек|Свойство|Особина|Мөмкинлек|Могућност|Λειτουργία|Δυνατότητα|Właściwość|Vlastnosť|Trajto|Tính năng|Savybė|Požiadavka|Požadavek|Potrzeba biznesowa|Özellik|Osobina|Ominaisuus|Omadus|Mogućnost|Mogucnost|Jellemző|Funzionalità|Funktionalitéit|Funktionalität|Funkcja|Funkcionalnost|Funkcionalitāte|Funkcia|Fungsi|Functionaliteit|Funcționalitate|Funcţionalitate|Functionalitate|Funcionalitat|Funcionalidade|Fonctionnalité|Fitur|Fīča|Feature|Eiginleiki|Egenskap|Egenskab|Característica|Caracteristica|Business Need|Aspekt|Arwedd|Ability):/)
+    ) {
+        state.inKeywordLine = true;
+        return "keyword";
+    }
+    return null;
+}
+
+module.exports = { tokenLocalisedFeatureKeyword };