diff --git a/scripts/test-group-report.mjs b/scripts/test-group-report.mjs
index 1b4996528221..67a35b16d9ff 100644
--- a/scripts/test-group-report.mjs
+++ b/scripts/test-group-report.mjs
@@ -1,8 +1,10 @@
+// Builds grouped Vitest duration reports or compares two grouped reports.
 import { spawn } from "node:child_process";
 import fs from "node:fs";
 import os from "node:os";
 import path from "node:path";
 import { pathToFileURL } from "node:url";
+import { parsePositiveInt } from "./lib/numeric-options.mjs";
 import {
   buildGroupedTestComparison,
   buildGroupedTestReport,
@@ -11,7 +13,6 @@ import {
   renderGroupedTestComparison,
   renderGroupedTestReport,
 } from "./lib/test-group-report.mjs";
-import { parsePositiveInt } from "./lib/numeric-options.mjs";
 import { formatMs } from "./lib/vitest-report-cli-utils.mjs";
 import { resolveVitestNodeArgs } from "./run-vitest.mjs";
 import {
@@ -56,6 +57,9 @@ function usage() {
   ].join("\n");
 }
 
+/**
+ * Parses report, compare, and Vitest-run options for grouped test reports.
+ */
 export function parseTestGroupReportArgs(argv) {
   const args = {
     allowFailures: false,
@@ -212,6 +216,9 @@ function formatSpawnError(error) {
   return error instanceof Error ? error.message : String(error);
 }
 
+/**
+ * Runs a command, captures text output, and terminates timed-out process groups.
+ */
 export function spawnText(command, args, options) {
   const maxBuffer = 1024 * 1024 * 64;
   const timeoutMs = options.timeoutMs ?? DEFAULT_RUN_TIMEOUT_MS;
@@ -411,6 +418,9 @@ function readGroupedReport(reportPath) {
   return JSON.parse(fs.readFileSync(reportPath, "utf8"));
 }
 
+/**
+ * Resolves JSON report and per-run artifact directories from an output path.
+ */
 export function resolveReportArtifactDirs(outputPath) {
   const outputDir = path.dirname(outputPath);
   const outputExt = path.extname(outputPath);
@@ -456,6 +466,9 @@ function buildFullSuiteLeafRunPlans() {
   }
 }
 
+/**
+ * Resolves explicit or full-suite Vitest config plans for report generation.
+ */
 export function resolveRunPlans(args) {
   if (args.reports.length > 0) {
     return [];
@@ -477,6 +490,9 @@ export function resolveRunPlans(args) {
   }));
 }
 
+/**
+ * Builds env for full-suite report runs, including per-config cache paths.
+ */
 export function resolveFullSuiteVitestEnv(args, env = process.env, label = "") {
   if (
     !args.fullSuite ||
@@ -491,6 +507,9 @@ export function resolveFullSuiteVitestEnv(args, env = process.env, label = "") {
   };
 }
 
+/**
+ * Resolves bounded concurrency for grouped report run plans.
+ */
 export function resolveRunPlanConcurrency(args, runPlanCount) {
   if (runPlanCount <= 1) {
     return 1;
@@ -504,6 +523,9 @@ export function resolveRunPlanConcurrency(args, runPlanCount) {
   return Math.min(2, runPlanCount);
 }
 
+/**
+ * Builds concrete report run specs from parsed args and config plans.
+ */
 export function resolveReportRunSpecs(args, runPlans, params = {}) {
   const concurrency = params.concurrency ?? resolveRunPlanConcurrency(args, runPlans.length);
   const env = params.env ?? process.env;
diff --git a/scripts/test-hotspots.mjs b/scripts/test-hotspots.mjs
index adf7dffa07dc..272b77588958 100644
--- a/scripts/test-hotspots.mjs
+++ b/scripts/test-hotspots.mjs
@@ -1,3 +1,4 @@
+// Prints the slowest test files from a Vitest JSON report.
 import {
   formatMs,
   loadVitestReportFromArgs,
diff --git a/scripts/test-live-shard.mjs b/scripts/test-live-shard.mjs
index bcd45e1655c9..52c0c2b2afcf 100644
--- a/scripts/test-live-shard.mjs
+++ b/scripts/test-live-shard.mjs
@@ -1,4 +1,5 @@
 #!/usr/bin/env node
+// Runs one named live-test shard with OPENCLAW_LIVE_TEST enabled.
 import { spawnSync } from "node:child_process";
 import fs from "node:fs";
 import path from "node:path";
@@ -11,6 +12,7 @@ import {
 
 const LIVE_TEST_SUFFIX = ".live.test.ts";
 
+/** Live-test shards included in release validation. */
 export const RELEASE_LIVE_TEST_SHARDS = Object.freeze([
   "native-live-src-agents",
   "native-live-src-gateway-core",
@@ -30,6 +32,7 @@ export const RELEASE_LIVE_TEST_SHARDS = Object.freeze([
   "native-live-extensions-media-video",
 ]);
 
+/** All live-test shards, including broader local-only shard aliases. */
 export const LIVE_TEST_SHARDS = Object.freeze([
   ...RELEASE_LIVE_TEST_SHARDS,
   "native-live-extensions-o-z",
@@ -68,6 +71,9 @@ function walkFiles(rootDir) {
   return files;
 }
 
+/**
+ * Lists all live test files from git/find fallback paths.
+ */
 export function collectAllLiveTestFiles(repoRoot = process.cwd()) {
   const externalFiles = listExternalLiveTestFiles(repoRoot);
   if (externalFiles) {
@@ -211,6 +217,9 @@ function isMoonshotLiveTest(file) {
   return file.startsWith("extensions/moonshot/");
 }
 
+/**
+ * Selects the live test files belonging to one shard name.
+ */
 export function selectLiveShardFiles(shard, files = collectAllLiveTestFiles()) {
   switch (shard) {
     case "native-live-src-agents":
@@ -290,6 +299,9 @@ function usage(stream = process.stderr) {
   );
 }
 
+/**
+ * Parses live-shard CLI args into shard name and Vitest passthrough args.
+ */
 export function parseLiveShardArgs(args) {
   const separatorIndex = args.indexOf("--");
   const optionArgs = separatorIndex >= 0 ? args.slice(0, separatorIndex) : args;
@@ -312,10 +324,16 @@ export function parseLiveShardArgs(args) {
   return { shard, listOnly, passthroughArgs };
 }
 
+/**
+ * Builds pnpm/vitest args for selected live test files.
+ */
 export function buildLiveShardPnpmArgs(files, passthroughArgs) {
   return ["test:live", "--", ...files, ...passthroughArgs];
 }
 
+/**
+ * Builds spawn options for the live-shard Vitest child.
+ */
 export function buildLiveShardSpawnParams(env = process.env, platform = process.platform) {
   return {
     detached: shouldUseDetachedVitestProcessGroup(platform),
diff --git a/scripts/test-live.mjs b/scripts/test-live.mjs
index 54c2a6aa3446..24e65cb2260b 100644
--- a/scripts/test-live.mjs
+++ b/scripts/test-live.mjs
@@ -1,9 +1,13 @@
+// Runs the full live Vitest suite with live-test env and heartbeat output.
 import { spawnPnpmRunner } from "./pnpm-runner.mjs";
 import {
   installVitestProcessGroupCleanup,
   shouldUseDetachedVitestProcessGroup,
 } from "./vitest-process-group.mjs";
 
+/**
+ * Renders CLI usage for the live-test wrapper.
+ */
 export function testLiveUsage() {
   return [
     "Usage: node scripts/test-live.mjs [options] [--] [vitest targets/args...]",
@@ -19,6 +23,9 @@ export function testLiveUsage() {
   ].join("\n");
 }
 
+/**
+ * Parses live-test wrapper flags and forwarded Vitest args.
+ */
 export function parseTestLiveArgs(argv) {
   const forwardedArgs = [];
   let quietOverride;
@@ -61,6 +68,9 @@ export function parseTestLiveArgs(argv) {
   };
 }
 
+/**
+ * Builds env for live tests, including quiet mode and Codex harness opt-in.
+ */
 export function buildTestLiveEnv(args, baseEnv = process.env) {
   return {
     ...baseEnv,
@@ -73,6 +83,9 @@ export function buildTestLiveEnv(args, baseEnv = process.env) {
   };
 }
 
+/**
+ * Reads the live-test heartbeat interval.
+ */
 export function resolveTestLiveHeartbeatMs(baseEnv = process.env) {
   const value = baseEnv.OPENCLAW_LIVE_WRAPPER_HEARTBEAT_MS;
   if (value === undefined || value === "") {
@@ -89,6 +102,9 @@ export function resolveTestLiveHeartbeatMs(baseEnv = process.env) {
   return parsed;
 }
 
+/**
+ * Builds pnpm/vitest args for full live test execution.
+ */
 export function buildTestLivePnpmArgs(args) {
   return [
     "exec",
@@ -100,6 +116,9 @@ export function buildTestLivePnpmArgs(args) {
   ];
 }
 
+/**
+ * Builds spawn options for the live-test Vitest child.
+ */
 export function buildTestLiveSpawnParams(env, platform = process.platform) {
   return {
     detached: shouldUseDetachedVitestProcessGroup(platform),
@@ -108,6 +127,9 @@ export function buildTestLiveSpawnParams(env, platform = process.platform) {
   };
 }
 
+/**
+ * Runs the live-test wrapper process.
+ */
 export function main(argv = process.argv.slice(2), baseEnv = process.env) {
   const args = parseTestLiveArgs(argv);
   if (args.help) {
diff --git a/scripts/test-perf-budget.mjs b/scripts/test-perf-budget.mjs
index 3ca16f30c4c5..98e5230d65e0 100644
--- a/scripts/test-perf-budget.mjs
+++ b/scripts/test-perf-budget.mjs
@@ -1,3 +1,4 @@
+// Runs a Vitest config and enforces wall-time regression budgets.
 import { pathToFileURL } from "node:url";
 import { parseFlagArgs, stringFlag } from "./lib/arg-utils.mjs";
 import {
@@ -90,6 +91,7 @@ function main() {
   }
 }
 
+/** Test-facing parser helpers for budget validation. */
 export const testing = {
   parseArgs,
   parseBudgetNumber,
diff --git a/scripts/test-projects-imports.mjs b/scripts/test-projects-imports.mjs
index a73041adc50a..c4680d399f3a 100644
--- a/scripts/test-projects-imports.mjs
+++ b/scripts/test-projects-imports.mjs
@@ -1,3 +1,4 @@
+// Runs test-projects with Vitest import duration diagnostics enabled.
 process.env.OPENCLAW_VITEST_IMPORT_DURATIONS = "1";
 process.env.OPENCLAW_VITEST_PRINT_IMPORT_BREAKDOWN = "1";
 
diff --git a/scripts/test-projects-max.mjs b/scripts/test-projects-max.mjs
index 1c7cd4110731..d0fbc3b2c00b 100644
--- a/scripts/test-projects-max.mjs
+++ b/scripts/test-projects-max.mjs
@@ -1,3 +1,4 @@
+// Runs test-projects with an explicit high worker budget for max-throughput checks.
 process.env.OPENCLAW_VITEST_MAX_WORKERS = "8";
 
 await import("./test-projects.mjs");
diff --git a/scripts/test-projects-serial.mjs b/scripts/test-projects-serial.mjs
index f65f98cd7b89..d8f37e4b099b 100644
--- a/scripts/test-projects-serial.mjs
+++ b/scripts/test-projects-serial.mjs
@@ -1,3 +1,4 @@
+// Runs test-projects serially with a one-worker Vitest budget.
 process.env.OPENCLAW_TEST_PROJECTS_SERIAL = "1";
 process.env.OPENCLAW_VITEST_MAX_WORKERS = "1";