feat: builder 简历生成 + 轻度优化 + 简历导入交付副本

自内部仓库剥离深度优化与 RAG 知识库后的交付版本：
- Builder 对话式简历生成（FSM + 意图路由 LLM 兜底增强）
- 条目级轻度优化：事实覆盖门禁 + STAR/bullet 修复链，功能/简介/成果与技术栈同级保护
- 简历导入：DOCX/PDF 解析、结构归一、手机号脱敏
- PostgreSQL 运行时 + Alembic 迁移链

Co-Authored-By: Claude <noreply@anthropic.com>

backend/tests/test_enrichment_controls.py

@@ -0,0 +1,54 @@
+"""队列护栏测试：/create 幂等不重置队列、旧格式 profile 惰性初始化。"""
+
+from __future__ import annotations
+
+from fastapi.testclient import TestClient
+
+from test_api import BASE, active_component, event
+from test_enrichment_flow import (
+    continue_enriching,
+    created_session,
+    skip_current,
+    submit_to,
+)
+from test_enrichment_records import (
+    INTERNSHIP_ENTRY,
+    choose,
+    confirm_active,
+    latest_patch_revision,
+)
+
+
+def test_create_idempotent_with_queue_initialized(client: TestClient):
+    session_id, body = created_session(client)
+    body = continue_enriching(client, session_id, body)
+    body = submit_to(client, session_id, body, "record_fields", dict(INTERNSHIP_ENTRY)).json()
+    body = confirm_active(client, session_id, body)
+    assert latest_patch_revision(body) == 2
+
+    # 重复创建：幂等返回，不重置队列与 revision
+    duplicate = client.post(f"{BASE}/sessions/{session_id}/create", json={})
+    assert duplicate.status_code == 200, duplicate.text
+    assert duplicate.json()["created"] is False
+
+    # 队列仍停留在 AddAnother，可正常推进到 project
+    body = choose(client, session_id, body, "next")
+    assert active_component(body)["data"]["module"] == "project"
+
+
+def test_legacy_session_without_enrichment_keys_lazy_initializes(client: TestClient):
+    # 创建后的 profile 不含 records/tags/enrichment 键（等同旧会话格式），
+    # 首个 continue_enriching 应惰性建队列并正常走完整链路。
+    session_id, body = created_session(client)
+    body = continue_enriching(client, session_id, body)
+    assert active_component(body)["data"]["component"] == "record_fields"
+    assert active_component(body)["data"]["module"] == "internship"
+
+    for _ in range(5):
+        body = skip_current(client, session_id, body)
+    assert body["stage"] == "RESUME_ENRICHING"
+    assert active_component(body)["data"]["component"] == "custom_card_picker"
+
+    body = choose(client, session_id, body, "finish")
+    assert body["stage"] == "CONTENT_READY"
+    assert active_component(body)["data"]["component"] == "content_ready_card"