fix: resolve CI/CD issues - remove unused dependencies and imports

- Remove unused thiserror dependency from Cargo.toml
- Remove unused imports (Text, Tabs, Widget, Event, KeyCode, KeyEventKind) from tui/mod.rs
- Remove unused imports (File, Write) from export/mod.rs
- Remove unused pub use ComplexityDistribution from core/analyzer.rs

techdebt-tracker-cli/tests/fixtures/sample.js

@@ -0,0 +1,81 @@
+// JavaScript sample file with technical debt comments
+
+function calculateTotal(items) {
+    // TODO: This should use reduce instead of a loop
+    let total = 0;
+    for (let i = 0; i < items.length; i++) {
+        total += items[i].price;
+    }
+    return total;
+}
+
+function fetchUserData(userId) {
+    // FIXME: API error handling is missing
+    // FIXME: This endpoint may return null
+    return fetch(`/api/users/${userId}`)
+        .then(response => response.json());
+}
+
+function processPayment(amount) {
+    // HACK: Quick fix for holiday season
+    if (amount > 1000) {
+        console.log("High value transaction");
+    }
+    // TODO: Implement proper payment processing
+}
+
+function createUser(name, email) {
+    // NOTE: Email validation is basic
+    if (!email.includes('@')) {
+        throw new Error('Invalid email');
+    }
+    return { name, email };
+}
+
+class DataProcessor {
+    constructor() {
+        this.data = [];
+        // XXX: Memory leak - data is never cleared
+    }
+
+    addItem(item) {
+        this.data.push(item);
+    }
+
+    process() {
+        // BUG: This doesn't handle edge cases
+        return this.data.map(x => x * 2);
+    }
+}
+
+// TODO: Add JSDoc comments
+// TODO: Write unit tests
+
+async function loadConfig() {
+    // FIXME: Hardcoded path should be configurable
+    const response = await fetch('/config.json');
+    return response.json();
+}
+
+function temporaryFix() {
+    // TEMP: Remove this after Q1
+    return { status: 'pending' };
+}
+
+function oldCode() {
+    // REFACTOR: This code is legacy
+    let result = 0;
+    for (let i = 0; i < 10; i++) {
+        result += i;
+    }
+    return result;
+}
+
+module.exports = {
+    calculateTotal,
+    fetchUserData,
+    processPayment,
+    createUser,
+    DataProcessor,
+    loadConfig,
+};