feat(card): badge differentiates expected vs unexpected skip

The level badge gains a third segment derived from level_cap_intent:
- amber 'gap?'   when the climb was capped by an UNDECLARED gap-sensitive N/A
                 (backup_restore / functional) — a likely-missing test (unexpected skip)
- muted 'expected' when capped by a DECLARED intentional N/A (reviewed, nothing to fix)
- nothing extra for a clean cap, a full climb, or a real failure.

Font-safe text labels (no emoji) so the SVG renders headless/anywhere. Badge
never inflates — it only annotates the cap the level already reflects.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

tests/unit/test_card.py

@@ -51,6 +51,19 @@ def test_badge_svg_wellformed():
     assert svg.startswith("<svg") and svg.endswith("</svg>")
     assert "level 4" in svg
     assert C.level_color(4) in svg
+    # plain cap (no intent) → two-box badge, no third segment
+    assert "expected" not in svg and "gap?" not in svg
+
+
+def test_badge_svg_differentiates_expected_vs_unexpected_skip():
+    # declared intentional N/A capped the climb → muted "expected" third segment
+    exp = C.level_badge_svg(2, "L3 backup/restore N/A", "intentional · no persistent data")
+    assert "level 2" in exp and "expected" in exp and C.EXPECT_COLOR in exp
+    assert "gap?" not in exp
+    # undeclared gap-sensitive N/A → amber "gap?" third segment (an UNEXPECTED skip)
+    gap = C.level_badge_svg(2, "L3 backup/restore N/A", "undeclared N/A — possible coverage gap")
+    assert "level 2" in gap and "gap?" in gap and C.GAP_COLOR in gap
+    assert "expected" not in gap
 
 
 def test_card_html_reports_level_verbatim():