Point signup CTA at /profile (was /signup, 404'd)

Marketing-site signup moved to flashalpha.com/profile. The old
flashalpha.com/signup URL has 404'd since at least 2026-05-27 when
Phase 0.5 Task 8 first detected it via the link-liveness test.

Changes:
- cookbook_tools/cta_template.py: _SIGNUP_URL points to /profile
- notebooks/tier-a-hooks/01-gex-dashboard.{py,ipynb}: top CTA cell updated
- tests/cookbook_tools/test_cta_template.py: assertion updated
- tests/cookbook_tools/test_cta_template_properties.py: Hypothesis prop updated
- tests/cookbook_tools/test_new_recipe.py: scaffolder smoke test updated
- tests/test_links_alive.py: removed the xfail marker — test now passes

Verified GET https://flashalpha.com/profile?utm_*=... -> 200 OK with
all UTM params preserved on the rendered page.

Test suite: 89 passed, 2 skipped, 0 xfailed (was 88/2/1).

Author: tdobrowolski1

cookbook_tools/cta_template.py

@@ -13,7 +13,7 @@
 }
 
 _SIGNUP_URL = (
-    "https://flashalpha.com/signup"
+    "https://flashalpha.com/profile"
     "?utm_source=github-cookbook&utm_medium=notebook&utm_campaign={slug}"
 )
 _PRICING_URL = (

notebooks/tier-a-hooks/01-gex-dashboard.ipynb

@@ -50,7 +50,7 @@
     "# Build a GEX Dashboard in 30 Lines\n",
     "\n",
     "> 🔑 Get a free FlashAlpha API key (5 req/day, no card):\n",
-    ">   https://flashalpha.com/signup?utm_source=github-cookbook&utm_medium=notebook&utm_campaign=01-gex-dashboard\n",
+    ">   https://flashalpha.com/profile?utm_source=github-cookbook&utm_medium=notebook&utm_campaign=01-gex-dashboard\n",
     ">\n",
     "> Tier required: **Free** · [![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/FlashAlpha-lab/flashalpha-examples/blob/main/notebooks/tier-a-hooks/01-gex-dashboard.ipynb)"
    ]

notebooks/tier-a-hooks/01-gex-dashboard.py

@@ -20,7 +20,7 @@
 # # Build a GEX Dashboard in 30 Lines
 #
 # > 🔑 Get a free FlashAlpha API key (5 req/day, no card):
-# >   https://flashalpha.com/signup?utm_source=github-cookbook&utm_medium=notebook&utm_campaign=01-gex-dashboard
+# >   https://flashalpha.com/profile?utm_source=github-cookbook&utm_medium=notebook&utm_campaign=01-gex-dashboard
 # >
 # > Tier required: **Free** · [![Open in Colab](https://colab.research.google.com/assets/colab-badge.svg)](https://colab.research.google.com/github/FlashAlpha-lab/flashalpha-examples/blob/main/notebooks/tier-a-hooks/01-gex-dashboard.ipynb)
 

tests/cookbook_tools/test_cta_template.py

@@ -30,7 +30,7 @@ def test_top_cell_contains_signup_url_with_utm():
     md = render_top_cell(_fm(), tier_dir="tier-a-hooks")
     assert "# Build a GEX Dashboard in 30 Lines" in md
     assert (
-        "https://flashalpha.com/signup?utm_source=github-cookbook"
+        "https://flashalpha.com/profile?utm_source=github-cookbook"
         "&utm_medium=notebook&utm_campaign=01-gex-dashboard"
         in md
     )

tests/cookbook_tools/test_cta_template_properties.py

@@ -47,7 +47,7 @@ def test_top_cell_always_contains_signup_url_with_correct_utm(
 ):
     md = render_top_cell(fm, tier_dir=tier_dir)
     assert f"utm_campaign={fm.slug}" in md
-    assert "flashalpha.com/signup" in md
+    assert "flashalpha.com/profile" in md
     assert f"notebooks/{tier_dir}/{fm.slug}.ipynb" in md
 
 

tests/cookbook_tools/test_new_recipe.py

@@ -71,7 +71,7 @@ def test_scaffolded_notebook_has_top_and_bottom_cta_with_correct_utm(
     nb = load_notebook(tmp_path / "notebooks" / "tier-a-hooks" / "demo-99-test.ipynb")
     urls = extract_markdown_urls(nb)
     assert any("utm_campaign=demo-99-test" in u for u in urls)
-    assert any("flashalpha.com/signup" in u for u in urls)
+    assert any("flashalpha.com/profile" in u for u in urls)
     assert any("flashalpha.com/pricing" in u for u in urls)
     assert any("flashalpha.com/discord" in u for u in urls)
 

tests/test_links_alive.py

@@ -56,14 +56,6 @@ def _check_url(url: str, cache: dict[str, dict]) -> tuple[int, str]:
     return r.status_code, "network"
 
 
-# flashalpha.com/signup returns 404 as of 2026-05-27; all other CTAs pass.
-# The URL is correct per Phase 0 spec — the marketing site's /signup route is
-# temporarily broken. Mark xfail so CI surfaces it as an expected failure
-# rather than blocking the build. Remove once the route is restored.
-@pytest.mark.xfail(
-    reason="flashalpha.com/signup returns 404 (marketing site route broken as of 2026-05-27); URL is correct per spec",
-    strict=False,
-)
 def test_all_recipe_cta_urls_respond_2xx(recipe_path: pathlib.Path):
     nb = load_notebook(recipe_path)
     urls = extract_markdown_urls(nb)