fix: restore Tieba crawling after PC page rewrite

Tieba search, detail, comments, creator, and forum-list pages now rely on the current signed PC JSON APIs instead of brittle HTML selectors. The CLI also maps Tieba detail and creator arguments into the platform-specific config so command-line runs exercise the intended mode.

Constraint: Tieba PC pages no longer expose stable HTML structures for search, creator, and forum-list extraction
Constraint: Current PC APIs require browser cookies, tbs, and the web client signing convention
Rejected: Keep expanding HTML selectors | search and creator pages returned large documents with empty parsed results after the redesign
Confidence: high
Scope-risk: moderate
Directive: Do not replace these API paths with page HTML parsing without re-verifying the current Tieba network requests
Tested: uv run pytest tests/test_tieba_client_pagination.py tests/test_cmd_arg_tieba.py tests/test_tieba_extractor.py -q
Tested: uv run python -m py_compile cmd_arg/arg.py media_platform/tieba/help.py media_platform/tieba/client.py media_platform/tieba/core.py tests/test_cmd_arg_tieba.py tests/test_tieba_client_pagination.py tests/test_tieba_extractor.py
Tested: uv run main.py --platform tieba --type search --keywords 编程兼职 --get_comment false
Tested: uv run main.py --platform tieba --type detail --specified_id 9835114923 --get_comment true --max_comments_count_singlenotes 3
Tested: uv run main.py --platform tieba --type creator --creator_id https://tieba.baidu.com/home/main?id=tb.1.6ad0cd4a.7ZcjVYWa7UpHttCld2OppA --get_comment false
Not-tested: Second-level Tieba comment API migration; this path still uses the existing /p/comment HTML parser
Not-tested: Full pytest suite has one pre-existing unrelated XHS Excel store assertion failure

tests/test_cmd_arg_tieba.py

@@ -0,0 +1,62 @@
+# -*- coding: utf-8 -*-
+
+import config
+import pytest
+from cmd_arg import parse_cmd
+from media_platform.tieba import TieBaCrawler
+
+
+@pytest.mark.asyncio
+async def test_tieba_detail_cli_sets_specified_ids():
+    await parse_cmd(
+        [
+            "--platform",
+            "tieba",
+            "--type",
+            "detail",
+            "--specified_id",
+            "https://tieba.baidu.com/p/10451142633,9835114923",
+        ]
+    )
+
+    assert config.TIEBA_SPECIFIED_ID_LIST == ["10451142633", "9835114923"]
+
+
+@pytest.mark.asyncio
+async def test_tieba_creator_cli_sets_creator_urls():
+    await parse_cmd(
+        [
+            "--platform",
+            "tieba",
+            "--type",
+            "creator",
+            "--creator_id",
+            "tb.1.example,https://tieba.baidu.com/home/main?id=tb.1.raw",
+        ]
+    )
+
+    assert config.TIEBA_CREATOR_URL_LIST == [
+        "https://tieba.baidu.com/home/main?id=tb.1.example",
+        "https://tieba.baidu.com/home/main?id=tb.1.raw",
+    ]
+
+
+@pytest.mark.asyncio
+async def test_tieba_detail_reads_runtime_specified_ids(monkeypatch):
+    crawler = TieBaCrawler()
+    seen_note_ids = []
+
+    async def fake_get_note_detail(note_id, semaphore):
+        seen_note_ids.append(note_id)
+        return None
+
+    async def fake_batch_get_comments(note_details):
+        return None
+
+    monkeypatch.setattr(config, "TIEBA_SPECIFIED_ID_LIST", ["10451142633"])
+    monkeypatch.setattr(crawler, "get_note_detail_async_task", fake_get_note_detail)
+    monkeypatch.setattr(crawler, "batch_get_note_comments", fake_batch_get_comments)
+
+    await crawler.get_specified_notes()
+
+    assert seen_note_ids == ["10451142633"]