revert(M9): 去掉画像调用上限 cap,只留作者缓存(几十分钟可接受)

按拍板:不加 PORTRAIT_CALLS_PER_RUN_CAP 安全阀;保留作者级画像缓存。代码/测试/文档同步移除 cap。

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

tests/test_portrait_cache_and_cap.py

@@ -1,57 +0,0 @@
-"""M9 修复:作者画像按作者缓存(同作者只拉一次)+ 本 run 画像调用上限(安全阀)。"""
-
-from content_agent.business_modules.progressive_screening import _ProgressiveContext
-
-
-class CountingPortraitClient:
-    def __init__(self):
-        self.calls = []
-
-    def fetch_account_fans_portrait(self, account_id):
-        self.calls.append(account_id)
-        return {
-            "fans": {
-                "age": {
-                    "data": {
-                        "41-50": {"percentage": "31.73%", "preference": "210"},
-                        "50-": {"percentage": "29.76%", "preference": "130"},
-                    }
-                }
-            }
-        }
-
-
-def _ctx(client):
-    return _ProgressiveContext(
-        run_id="r", policy_run_id="p", source_context={}, policy_bundle={},
-        platform_client=client, runtime=None, gemini_video_client=None,
-        limiter=None, archive_dispatcher=None, platform="douyin", portrait_client=client,
-    )
-
-
-def _bundle(author, q=80, p=70):
-    return {
-        "pattern_match_result": {"query_relevance_score": q},
-        "content_engagement_metrics": {"platform_performance": {"platform_performance_score": p}},
-        "content": {"author": {"platform_author_id": author}},
-    }
-
-
-def test_portrait_cached_by_author():
-    client = CountingPortraitClient()
-    ctx = _ctx(client)
-    bundles = [_bundle("a1"), _bundle("a1"), _bundle("a2")]
-    ctx._inject_fifty_plus(bundles)
-    assert client.calls == ["a1", "a2"]  # 同作者只拉一次
-    assert all(b["content_audience_50plus"]["status"] == "ok" for b in bundles)
-
-
-def test_portrait_cap_bounds_new_fetches(monkeypatch):
-    monkeypatch.setenv("CONTENT_AGENT_PORTRAIT_CALLS_PER_RUN_CAP", "1")
-    client = CountingPortraitClient()
-    ctx = _ctx(client)
-    bundles = [_bundle("a1"), _bundle("a2")]  # 两个不同作者
-    ctx._inject_fifty_plus(bundles)
-    assert len(client.calls) == 1  # 上限 1,只拉第一个
-    assert bundles[0]["content_audience_50plus"]["status"] == "ok"
-    assert bundles[1]["content_audience_50plus"]["status"] == "not_attempted"  # 超额不拉