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/e2e/profile/index.py

@@ -0,0 +1,34 @@
+# retoor <retoor@molodetz.nl>
+
+from tests.conftest import BASE_URL
+FOLLOW = "form[action='/follow/bob_test'] button"
+UNFOLLOW = "form[action='/follow/unfollow/bob_test'] button"
+from playwright.sync_api import expect
+
+
+def test_follow_then_unfollow(alice):
+    page, _ = alice
+    page.goto(f"{BASE_URL}/profile/bob_test", wait_until="domcontentloaded")
+    if page.is_visible(UNFOLLOW):
+        page.click(UNFOLLOW)
+        page.wait_for_url("**/profile/bob_test", wait_until="domcontentloaded")
+    assert page.is_visible(FOLLOW)
+    page.click(FOLLOW)
+    page.wait_for_url("**/profile/bob_test", wait_until="domcontentloaded")
+    assert page.is_visible(UNFOLLOW)
+    page.click(UNFOLLOW)
+    page.wait_for_url("**/profile/bob_test", wait_until="domcontentloaded")
+    assert page.is_visible(FOLLOW)
+
+
+def test_profile_viewing_other_user(bob, alice):
+    page_b, user_b = bob
+    page_b.goto(f"{BASE_URL}/profile/alice_test", wait_until="domcontentloaded")
+    assert page_b.is_visible("text=alice_test")
+
+
+def test_profile_message_button(bob, alice):
+    page_b, _ = bob
+    page_b.goto(f"{BASE_URL}/profile/alice_test", wait_until="domcontentloaded")
+    message_btn = page_b.locator("a:has-text('Send Message')")
+    assert message_btn.is_visible()