feat(content): v4.6.0 Content Blocks enrichis — Callout, TOC, Math (KaTeX), Toggle, Multi-colonnes

- Ajout blocs enrichis dans l'éditeur: callout (avec sélecteur d'emoji), table of contents (ancres), math (LaTeX/KaTeX), toggle lists (enfants collapsibles), multi-colonnes
- Intégration KaTeX 0.16.11 self-hosté (JS/CSS/fonts) — aucun CDN externe
- Rendu des nouveaux blocs dans les pages publiques (/p/<slug>): TOC, KaTeX, colonnes, toggle <details>
- Persistance 'children' (colonnes/toggle) + export Markdown étendu
- Sidebar customization par utilisateur (config API + colonne sidebar_config)
- Correctif test_views_calendar: parsing des query params year/month (le défaut ouvrait sur le mois courant)
- Tests: 184 passing

tests/test_app.py

@@ -619,9 +619,9 @@ def test_views_calendar(client):
     r = client.post("/db/api", json={"name": "Cal DB"})
     cid = r.json()["id"]
     client.post(f"/db/{cid}/pages/api", json={"title": "Event 1", "properties": {"date": "2026-07-15"}})
-    resp = client.get(f"/db/{cid}/view/calendar")
+    resp = client.get(f"/db/{cid}/view/calendar?year=2026&month=7")
     assert resp.status_code == 200
-    assert "July" in resp.text or "juillet" in resp.text
+    assert "July 2026" in resp.text or "juillet 2026" in resp.text
     client.delete(f"/db/api/{cid}")
 
 
@@ -674,7 +674,7 @@ def test_views_calendar_navigation(client):
     cid = r.json()["id"]
     resp = client.get(f"/db/{cid}/view/calendar?year=2026&month=8")
     assert resp.status_code == 200
-    assert "August" in resp.text or "août" in resp.text
+    assert "August 2026" in resp.text or "août 2026" in resp.text
     client.delete(f"/db/api/{cid}")
 
 
@@ -2757,4 +2757,112 @@ def test_my_tasks_page_render(client):
     resp = client.get("/my-tasks?view=all")
     assert resp.status_code == 200
     assert "Urgent fix" in resp.text
-    assert "My Tasks DB" in resp.text
+    assert "My Tasks DB" in resp.text
+
+
+# ── v4.6.0: Content Blocks Enriched ──
+
+def _make_published_page(client, blocks, title="Enriched Page"):
+    """Create a user + published page directly in DB with blocks, return public HTML."""
+    import uuid
+    import json as _json
+    from app.db import get_conn
+    login = "v460_" + uuid.uuid4().hex[:10]
+    slug = "v460-" + uuid.uuid4().hex[:8]
+    with get_conn() as conn:
+        conn.execute("INSERT INTO users (login, full_name, email) VALUES (?, 'V460', ?)",
+                     (login, login + "@t.com"))
+        uid = conn.execute("SELECT id FROM users WHERE login=?", (login,)).fetchone()["id"]
+        cur = conn.execute(
+            "INSERT INTO pages (workspace, title, content, content_format, is_published, publish_slug) "
+            "VALUES (?, ?, ?, 'blocks', 1, ?)",
+            (login, title, _json.dumps(blocks), slug),
+        )
+        pid = cur.lastrowid
+        conn.commit()
+    resp = client.get(f"/p/{slug}")
+    with get_conn() as conn:
+        conn.execute("DELETE FROM users WHERE id=?", (uid,))
+        conn.execute("DELETE FROM pages WHERE id=?", (pid,))
+        conn.commit()
+    return resp
+
+
+def test_v460_public_table_of_contents(client):
+    """Table of contents block renders a list of page headings."""
+    blocks = [
+        {"id": "h1", "type": "heading_1", "content": "Overview"},
+        {"id": "b1", "type": "table_of_contents", "content": ""},
+        {"id": "h2", "type": "heading_2", "content": "Installation"},
+    ]
+    resp = _make_published_page(client, blocks)
+    assert resp.status_code == 200
+    assert "On this page" in resp.text
+    assert "Overview" in resp.text
+    assert "Installation" in resp.text
+
+
+def test_v460_public_math_block(client):
+    """Math block renders a KaTeX-display marker with the LaTeX source."""
+    blocks = [
+        {"id": "m1", "type": "math", "content": "E = mc^2"},
+    ]
+    resp = _make_published_page(client, blocks)
+    assert resp.status_code == 200
+    assert 'data-katex="E = mc^2"' in resp.text
+
+
+def test_v460_public_columns(client):
+    """Column blocks render children in a flex row."""
+    blocks = [
+        {"id": "cb", "type": "columns",
+         "children": [
+             {"id": "c1", "type": "paragraph", "content": "Left cell"},
+             {"id": "c2", "type": "paragraph", "content": "Right cell"},
+         ]},
+    ]
+    resp = _make_published_page(client, blocks)
+    assert resp.status_code == 200
+    assert "Left cell" in resp.text
+    assert "Right cell" in resp.text
+
+
+def test_v460_public_toggle_children(client):
+    """Toggle block renders nested children."""
+    blocks = [
+        {"id": "tg", "type": "toggle", "content": "Details", "expanded": True,
+         "children": [{"id": "t1", "type": "bulleted_list", "content": "Nested item"}]},
+    ]
+    resp = _make_published_page(client, blocks)
+    assert resp.status_code == 200
+    assert "Details" in resp.text
+    assert "Nested item" in resp.text
+
+
+def test_v460_save_load_blocks_preserves_children(client):
+    """Blocks API round-trip preserves children for columns and toggles."""
+    from app.db import get_conn
+    import json as _json
+    r = client.post("/board/api/pages?title=Block RT&section=Private&project=test/test")
+    pid = r.json()["id"]
+    client.post(f"/board/api/pages/{pid}/blocks", json={
+        "title": "Block RT",
+        "blocks": [
+            {"id": "cb", "type": "columns", "children": [
+                {"id": "c1", "type": "paragraph", "content": "A"},
+                {"id": "c2", "type": "paragraph", "content": "B"},
+            ]},
+            {"id": "tg", "type": "toggle", "content": "T", "children": [
+                {"id": "t1", "type": "paragraph", "content": "X"},
+            ]},
+            {"id": "mt", "type": "math", "content": "x^2"},
+        ],
+    })
+    with get_conn() as conn:
+        row = conn.execute("SELECT content, content_format FROM pages WHERE id=?", (pid,)).fetchone()
+    assert row["content_format"] == "blocks"
+    data = _json.loads(row["content"])
+    types = {b["type"] for b in data}
+    assert "columns" in types and "toggle" in types and "math" in types
+    col = next(b for b in data if b["type"] == "columns")
+    assert len(col["children"]) == 2