Test dashboard: full menu system, all-service tests, filtering

- Run tests for all 10 services via per-service pytest subprocesses
- Group results by service with section headers
- Clickable summary cards filter by outcome (passed/failed/errors/skipped)
- Service filter nav using ~nav-link buttons in menu bar
- Full menu integration: ~header-row + ~header-child + ~menu-row
- Show logo image via cart-mini rendering
- Mount full service directories in docker-compose for test access
- Add 24 unit test files across 9 services

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

blog/tests/test_card_fragments.py

@@ -0,0 +1,44 @@
+"""Unit tests for card fragment parser."""
+from __future__ import annotations
+
+import pytest
+
+from blog.bp.blog.services.posts_data import _parse_card_fragments
+
+
+class TestParseCardFragments:
+    def test_empty_string(self):
+        assert _parse_card_fragments("") == {}
+
+    def test_single_block(self):
+        html = '<!-- card-widget:42 --><div>card</div><!-- /card-widget:42 -->'
+        result = _parse_card_fragments(html)
+        assert result == {"42": "<div>card</div>"}
+
+    def test_multiple_blocks(self):
+        html = (
+            '<!-- card-widget:1 -->A<!-- /card-widget:1 -->'
+            '<!-- card-widget:2 -->B<!-- /card-widget:2 -->'
+        )
+        result = _parse_card_fragments(html)
+        assert result == {"1": "A", "2": "B"}
+
+    def test_empty_inner_skipped(self):
+        html = '<!-- card-widget:99 -->   <!-- /card-widget:99 -->'
+        result = _parse_card_fragments(html)
+        assert result == {}
+
+    def test_multiline_content(self):
+        html = '<!-- card-widget:5 -->\n<p>line1</p>\n<p>line2</p>\n<!-- /card-widget:5 -->'
+        result = _parse_card_fragments(html)
+        assert "5" in result
+        assert "<p>line1</p>" in result["5"]
+
+    def test_mismatched_ids_not_captured(self):
+        html = '<!-- card-widget:1 -->content<!-- /card-widget:2 -->'
+        result = _parse_card_fragments(html)
+        assert result == {}
+
+    def test_no_markers(self):
+        html = '<div>no markers here</div>'
+        assert _parse_card_fragments(html) == {}