feat(#254): add connpass.com embed support

docs/features/embed.md

@@ -16,6 +16,7 @@ note.comは以下のサービスの埋め込みに対応しています:
 | noteマネー（株価チャート） | ✅ | 株価チャートとして埋め込み |
 | Zenn.dev | ✅ | 記事カードとして埋め込み |
 | Qiita | ✅ | 記事カードとして埋め込み |
+| connpass | ✅ | イベントカードとして埋め込み |
 | Google Slides | ✅ | プレゼンテーションとして埋め込み |
 | SpeakerDeck | ✅ | プレゼンテーションとして埋め込み |
 | その他の外部URL | ❌ | 通常のリンクとして表示 |

examples/sample_embeds.md

@@ -36,6 +36,12 @@ https://zenn.dev/driller/articles/0669cf98e07ffa
 
 https://qiita.com/driller/items/31c1ff4d0bf5813f624f
 
+## イベント
+
+### connpassイベント埋め込み
+
+https://fin-py.connpass.com/event/381982/
+
 ## コード
 
 ### GitHub Gist埋め込み

src/note_mcp/api/embeds.py

@@ -1,8 +1,8 @@
 """Embed URL detection and HTML generation for note.com.
 
 This module provides functions for detecting embed URLs (YouTube, Twitter, note.com,
-GitHub Gist, GitHub Repository, noteマネー, Zenn.dev, Google Slides, SpeakerDeck, Qiita)
-and generating the required HTML structure for note.com embeds.
+GitHub Gist, GitHub Repository, noteマネー, Zenn.dev, Google Slides, SpeakerDeck, Qiita,
+connpass) and generating the required HTML structure for note.com embeds.
 
 This is the single source of truth for embed URL patterns (DRY principle).
 
@@ -24,6 +24,9 @@
 
 Issue #244: Qiita article embed support added. Qiita URLs use 'external-article'
 service type (same as Zenn.dev) via the same /v2/embed_by_external_api endpoint.
+
+Issue #254: connpass event embed support added. connpass URLs use 'external-article'
+service type (same as Zenn.dev and Qiita) via the same /v2/embed_by_external_api endpoint.
 """
 
 from __future__ import annotations
@@ -67,6 +70,12 @@
 # Example: https://qiita.com/driller/items/31c1ff4d0bf5813f624f (Issue #244)
 QIITA_PATTERN = re.compile(r"^https?://qiita\.com/[\w-]+/items/[\w]+$")
 
+# connpass: {group}.connpass.com/event/{event_id}/
+# Example: https://fin-py.connpass.com/event/381982/ (Issue #254)
+# Note: connpass uses subdomain format for group names
+# Note: www subdomain is excluded (connpass canonical URLs use group subdomain)
+CONNPASS_PATTERN = re.compile(r"^https?://(?!www\.)([\w-]+)\.connpass\.com/event/\d+/?$")
+
 # GitHub Repository: github.com/owner/repo (with optional trailing slash)
 # Example: https://github.com/anthropics/claude-code (Issue #226)
 # Note: This pattern must NOT match gist.github.com (handled by GIST_PATTERN)
@@ -99,6 +108,7 @@
     (MONEY_PATTERN, "oembed"),
     (ZENN_PATTERN, "external-article"),
     (QIITA_PATTERN, "external-article"),  # Qiita also uses external-article (Issue #244)
+    (CONNPASS_PATTERN, "external-article"),  # connpass.com events (Issue #254)
 ]
 
 

tests/e2e/test_embed_api.py

@@ -654,3 +654,48 @@ async def test_stock_notation_in_code_block_not_converted(
         finally:
             # Clean up created article
             await delete_draft_with_retry(real_session, article_key)
+
+
+class TestConnpassEmbedApiConversion:
+    """Test connpass event embed conversion via API (Issue #254)."""
+
+    async def test_connpass_embed_via_api(
+        self,
+        real_session: Session,
+    ) -> None:
+        """connpassイベントURLがAPIでfigure要素に変換される.
+
+        - ブラウザを起動せずにAPIのみで下書き作成
+        - connpassイベントURLがfigure要素に変換される
+        - embedded-service="external-article"属性が設定される
+        """
+        # Arrange - Use real connpass event URL (fin-py勉強会)
+        connpass_url = "https://fin-py.connpass.com/event/381982/"
+        body = f"""connpassイベント埋め込みテスト
+
+{connpass_url}
+
+上記にconnpassイベントカードが表示されます。"""
+
+        # Act
+        result = await note_create_draft.fn(
+            title="[E2E-TEST] connpass Embed via API",
+            body=body,
+            tags=["e2e-test", "embed-api"],
+        )
+
+        # Assert - API response
+        assert "下書きを作成しました" in result
+
+        # Verify embed figure is present in raw HTML
+        article_key = extract_article_key(result)
+        try:
+            article_html = await get_article_html(article_key)
+
+            # Verify embed figure is present
+            assert 'embedded-service="external-article"' in article_html
+            assert f'data-src="{connpass_url}"' in article_html
+            assert "embedded-content-key=" in article_html
+        finally:
+            # Clean up created article
+            await delete_draft_with_retry(real_session, article_key)