feat: add uwf log subcommands (list, show, clean)

- uwf log list: list log files with sizes
- uwf log show --thread <id>: filter by thread ID
- uwf log show --process <pid>: filter by process ID
- uwf log clean --before <date>: delete old log files
- Tests: 12 new tests covering all subcommands

Implemented by solve-issue workflow, biome fixes applied manually.

Closes #413
Refs #411, #410

packages/cli-workflow/src/__tests__/log.test.ts

@@ -1,6 +1,6 @@
 import { mkdir, readdir, rm, writeFile } from "node:fs/promises";
-import { join } from "node:path";
 import { tmpdir } from "node:os";
+import { join } from "node:path";
 import { afterEach, beforeEach, describe, expect, test } from "vitest";
 import { cmdLogClean, cmdLogList, cmdLogShow } from "../commands/log.js";
 
@@ -95,21 +95,33 @@ describe("cmdLogList", () => {
 describe("cmdLogShow", () => {
   test("filters by thread ID", async () => {
     await writeLogFiles();
-    const result = await cmdLogShow(storageRoot, { thread: "01J1234ABCDEF", process: null, date: null });
+    const result = await cmdLogShow(storageRoot, {
+      thread: "01J1234ABCDEF",
+      process: null,
+      date: null,
+    });
     expect(result).toHaveLength(2);
     expect(result.every((e) => e.thread === "01J1234ABCDEF")).toBe(true);
   });
 
   test("filters by process ID", async () => {
     await writeLogFiles();
-    const result = await cmdLogShow(storageRoot, { thread: null, process: "1716200000000-1234", date: null });
+    const result = await cmdLogShow(storageRoot, {
+      thread: null,
+      process: "1716200000000-1234",
+      date: null,
+    });
     expect(result).toHaveLength(2);
     expect(result.every((e) => e.pid === "1716200000000-1234")).toBe(true);
   });
 
   test("filters by date", async () => {
     await writeLogFiles();
-    const result = await cmdLogShow(storageRoot, { thread: null, process: null, date: "2026-05-19" });
+    const result = await cmdLogShow(storageRoot, {
+      thread: null,
+      process: null,
+      date: "2026-05-19",
+    });
     expect(result).toHaveLength(1);
     expect(result[0].msg).toBe("old entry");
   });
@@ -125,13 +137,21 @@ describe("cmdLogShow", () => {
 
   test("returns empty when no matches", async () => {
     await writeLogFiles();
-    const result = await cmdLogShow(storageRoot, { thread: "NONEXISTENT", process: null, date: null });
+    const result = await cmdLogShow(storageRoot, {
+      thread: "NONEXISTENT",
+      process: null,
+      date: null,
+    });
     expect(result).toEqual([]);
   });
 
   test("combined thread + date filter", async () => {
     await writeLogFiles();
-    const result = await cmdLogShow(storageRoot, { thread: "01J1234ABCDEF", process: null, date: "2026-05-20" });
+    const result = await cmdLogShow(storageRoot, {
+      thread: "01J1234ABCDEF",
+      process: null,
+      date: "2026-05-20",
+    });
     expect(result).toHaveLength(2);
     expect(result.every((e) => e.thread === "01J1234ABCDEF")).toBe(true);
   });

packages/cli-workflow/src/cli.ts

@@ -14,6 +14,7 @@ import {
   cmdCasSchemaList,
   cmdCasWalk,
 } from "./commands/cas.js";
+import { cmdLogClean, cmdLogList, cmdLogShow } from "./commands/log.js";
 import { cmdSetup, cmdSetupInteractive } from "./commands/setup.js";
 import { cmdSkillCli } from "./commands/skill.js";
 import {
@@ -29,7 +30,6 @@ import {
   THREAD_READ_DEFAULT_QUOTA,
 } from "./commands/thread.js";
 import { cmdWorkflowList, cmdWorkflowPut, cmdWorkflowShow } from "./commands/workflow.js";
-import { cmdLogClean, cmdLogList, cmdLogShow } from "./commands/log.js";
 import { formatOutput, type OutputFormat } from "./format.js";
 import { resolveStorageRoot } from "./store.js";
 
@@ -399,7 +399,12 @@ log
   .option("--thread <thread-id>", "Filter by thread ID")
   .option("--process <pid>", "Filter by process ID")
   .option("--date <date>", "Filter by date (YYYY-MM-DD)")
-  .action((opts: { thread: string | undefined; process: string | undefined; date: string | undefined }) => {
+  .action(
+    (opts: {
+      thread: string | undefined;
+      process: string | undefined;
+      date: string | undefined;
+    }) => {
       const storageRoot = resolveStorageRoot();
       runAction(async () => {
         const result = await cmdLogShow(storageRoot, {
@@ -409,7 +414,8 @@ log
         });
         writeOutput(result);
       });
-  });
+    },
+  );
 
 log
   .command("clean")

packages/cli-workflow/src/commands/log.ts

@@ -1,4 +1,4 @@
-import { readFile, readdir, stat, unlink } from "node:fs/promises";
+import { readdir, readFile, stat, unlink } from "node:fs/promises";
 import { join } from "node:path";
 
 type LogListItem = {
@@ -45,7 +45,10 @@ function dateFromFilename(name: string): string {
 
 async function parseJsonlFile(path: string): Promise<Array<LogEntry>> {
   const content = await readFile(path, "utf-8");
-  const lines = content.trim().split("\n").filter((l) => l.length > 0);
+  const lines = content
+    .trim()
+    .split("\n")
+    .filter((l) => l.length > 0);
   return lines.map((line) => JSON.parse(line) as LogEntry);
 }
 
@@ -96,10 +99,7 @@ export async function cmdLogShow(
   return entries;
 }
 
-export async function cmdLogClean(
-  storageRoot: string,
-  before: string,
-): Promise<LogCleanResult> {
+export async function cmdLogClean(storageRoot: string, before: string): Promise<LogCleanResult> {
   const dir = logsDir(storageRoot);
   const files = await listLogFiles(dir);
   let deleted = 0;