chore: reorganize test files into domain-specific subdirectories under tests/

Split the monolithic test directory into three tiers (unit, api, e2e) with a path-mirroring directory structure. Added corresponding Makefile targets (test-unit, test-api, test-e2e) and updated all documentation references (CLAUDE.md, README.md, testing-cicd.html, testing-framework.html, testing-make.html) to reflect the new layout and naming conventions.

tests/api/docs/downloadmd.py

@@ -0,0 +1,54 @@
+# retoor <retoor@molodetz.nl>
+
+import html
+import json
+import re
+import requests
+from tests.conftest import BASE_URL
+from devplacepy.database import get_table
+from devplacepy.docs_api import API_GROUPS
+from devplacepy.utils import clear_user_cache
+def _configs_by_id(text):
+    configs = re.findall(r"data-config='(.*?)'", text, re.S)
+    return {
+        json.loads(html.unescape(cfg))["id"]: json.loads(html.unescape(cfg))
+        for cfg in configs
+    }
+
+
+def test_docs_every_api_group_page_loads(app_server):
+    for group in API_GROUPS:
+        r = requests.get(f"{BASE_URL}/docs/{group['slug']}.html")
+        if group.get("admin"):
+            assert r.status_code == 404, group["slug"]
+            continue
+        assert r.status_code == 200, group["slug"]
+        if group["endpoints"]:
+            assert "data-api-tester" in r.text
+
+
+def test_docs_download_markdown(app_server):
+    r = requests.get(f"{BASE_URL}/docs/download.md")
+    assert r.status_code == 200
+    assert "text/markdown" in r.headers["content-type"]
+    assert 'filename="devplace-docs.md"' in r.headers["content-disposition"]
+    assert "# DevPlace Documentation" in r.text
+    assert "/profile/search" in r.text
+    assert "| Name | In |" in r.text
+    assert "/admin/services/" not in r.text  # admin pages excluded for guests
+
+
+def test_docs_download_includes_admin_pages_for_admin(seeded_db):
+    users = get_table("users")
+    bob = users.find_one(username="bob_test")
+    assert "/admin/services/" not in requests.get(f"{BASE_URL}/docs/download.md").text
+    users.update({"uid": bob["uid"], "role": "Admin"}, ["uid"])
+    clear_user_cache(bob["uid"])
+    try:
+        admin = requests.get(
+            f"{BASE_URL}/docs/download.md", headers={"X-API-KEY": bob["api_key"]}
+        )
+        assert "/admin/services/" in admin.text
+    finally:
+        users.update({"uid": bob["uid"], "role": "Member"}, ["uid"])
+        clear_user_cache(bob["uid"])