Add --pipeline flag and improve log file naming

- Add --pipeline flag for explicit pipeline/non-interactive mode
- Change log file naming from base36 to YYYYMMDD-HHmmss-random format
- Update --task description to clarify it's an alternative to --issue
- Add tests for new timestamp-based session ID format

Resolves #28

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "takt",
-  "version": "0.3.6",
+  "version": "0.3.7",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "takt",
-      "version": "0.3.6",
+      "version": "0.3.7",
       "license": "MIT",
       "dependencies": {
         "@anthropic-ai/claude-agent-sdk": "^0.2.19",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "takt",
-  "version": "0.3.6",
+  "version": "0.3.7",
   "description": "TAKT: Task Agent Koordination Tool - AI Agent Workflow Orchestration",
   "main": "dist/index.js",
   "types": "dist/index.d.ts",

resources/global/en/workflows/default.yaml

@@ -208,7 +208,7 @@ steps:
     permission_mode: acceptEdits
     rules:
       - condition: AI issues fixed
-        next: reviewers
+        next: ai_review
       - condition: Cannot proceed, insufficient info
         next: plan
     instruction_template: |

resources/global/ja/workflows/default.yaml

@@ -204,7 +204,7 @@ steps:
     permission_mode: acceptEdits
     rules:
       - condition: AI問題の修正完了
-        next: reviewers
+        next: ai_review
       - condition: 判断できない、情報不足
         next: plan
     instruction_template: |

src/__tests__/utils.test.ts

@@ -52,6 +52,11 @@ describe('generateSessionId', () => {
     expect(typeof id).toBe('string');
     expect(id.length).toBeGreaterThan(0);
   });
+
+  it('should follow the new timestamp format', () => {
+    const id = generateSessionId();
+    expect(id).toMatch(/^\d{8}-\d{6}-[a-z0-9]{6}$/);
+  });
 });
 
 describe('createSessionLog', () => {

src/cli.ts

@@ -260,7 +260,8 @@ program
   .option('--repo <owner/repo>', 'Repository (defaults to current)')
   .option('--provider <name>', 'Override agent provider (claude|codex|mock)')
   .option('--model <name>', 'Override agent model')
-  .option('-t, --task <string>', 'Task content (triggers pipeline/non-interactive mode)')
+  .option('-t, --task <string>', 'Task content (as alternative to GitHub issue)')
+  .option('--pipeline', 'Pipeline mode: non-interactive, no worktree, direct branch creation')
   .option('--skip-git', 'Skip branch creation, commit, and push (pipeline mode)')
   .option('--create-worktree <yes|no>', 'Skip the worktree prompt by explicitly specifying yes or no');
 
@@ -268,9 +269,9 @@ program
 program.hook('preAction', async () => {
   resolvedCwd = resolve(process.cwd());
 
-  // Pipeline mode: triggered by --task (non-interactive)
+  // Pipeline mode: triggered by --pipeline flag
   const rootOpts = program.opts();
-  pipelineMode = rootOpts.task !== undefined;
+  pipelineMode = rootOpts.pipeline === true;
 
   await initGlobalDirs({ nonInteractive: pipelineMode });
   initProjectDirs(resolvedCwd);
@@ -390,11 +391,11 @@ program
       createWorktree: createWorktreeOverride,
     };
 
-    // --- Pipeline mode (non-interactive): triggered by --task ---
+    // --- Pipeline mode (non-interactive): triggered by --pipeline ---
     if (pipelineMode) {
       const exitCode = await executePipeline({
         issueNumber: opts.issue as number | undefined,
-        task: opts.task as string,
+        task: opts.task as string | undefined,
         workflow: (opts.workflow as string | undefined) ?? DEFAULT_WORKFLOW_NAME,
         branch: opts.branch as string | undefined,
         autoPr: opts.autoPr === true,
@@ -413,6 +414,13 @@ program
 
     // --- Normal (interactive) mode ---
 
+    // Resolve --task option to task text
+    const taskFromOption = opts.task as string | undefined;
+    if (taskFromOption) {
+      await selectAndExecuteTask(resolvedCwd, taskFromOption, selectOptions, agentOverrides);
+      return;
+    }
+
     // Resolve --issue N to task text (same as #N)
     const issueFromOption = opts.issue as number | undefined;
     if (issueFromOption) {

src/utils/session.ts

@@ -195,7 +195,10 @@ export function loadNdjsonLog(filepath: string): SessionLog | null {
 
 /** Generate a session ID */
 export function generateSessionId(): string {
-  const timestamp = Date.now().toString(36);
+  const now = new Date();
+  const timestamp = `${now.getFullYear()}${String(now.getMonth() + 1).padStart(2, '0')}${String(now.getDate()).padStart(2, '0')}-${String(
+    now.getHours(),
+  ).padStart(2, '0')}${String(now.getMinutes()).padStart(2, '0')}${String(now.getSeconds()).padStart(2, '0')}`;
   const random = Math.random().toString(36).slice(2, 8);
   return `${timestamp}-${random}`;
 }
@@ -333,4 +336,3 @@ export function updateLatestPointer(
 
   writeFileAtomic(latestPath, JSON.stringify(pointer, null, 2));
 }
-