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

app/routers/dashboard.py

@@ -115,10 +115,13 @@ def _sidebar_data(request: Request, repos: list[dict], include_workspace: bool =
     gitea_owner = ""
     gitea_repo = ""
     has_active_workspace = False
+    local_ws_id = 0
 
     if ws_cookie and ws_cookie.startswith("gitea:"):
         # Gitea workspace: set owner/repo for client-side tree loading
-        # BUT keep local workspace pages — they go in the "Private" section
+        # AND open the local workspace mirror of the same name in the
+        # sidebar's top "My Workspaces" section, in parallel with the
+        # Gitea repository tree.
         parts = ws_cookie.split(":", 2)
         if len(parts) >= 3:
             gitea_owner = parts[1]
@@ -126,7 +129,20 @@ def _sidebar_data(request: Request, repos: list[dict], include_workspace: bool =
             active_ws_name = f"{gitea_owner}/{gitea_repo}"
             gitea_workspace = True
             has_active_workspace = True
-            # workspace_pages stays as-is (local tree, loaded above)
+            # Load the local mirror workspace tree so it appears in "My
+            # Workspaces" alongside the Gitea repository section.
+            if user:
+                try:
+                    with get_conn() as conn:
+                        row = conn.execute(
+                            "SELECT id FROM workspaces WHERE owner_id=? AND name=? AND settings_json LIKE ?",
+                            (user["id"], f"{gitea_owner}/{gitea_repo}", "%gitea_repo%")
+                        ).fetchone()
+                        if row:
+                            local_ws_id = row["id"]
+                            workspace_pages = _load_workspace_pages(str(local_ws_id))
+                except (ValueError, Exception):
+                    pass
     elif include_workspace and ws_cookie and user:
         try:
             wsi = int(ws_cookie)
@@ -2039,6 +2055,13 @@ h1{font-size:3rem;opacity:.3}</style></head><body><h1>404</h1></body></html>""",
     )
 
 
+def _sanitize_id(block_id: str) -> str:
+    """Sanitize a block id for use as an HTML anchor (only alnum kept)."""
+    if not block_id:
+        return ""
+    return "".join(ch for ch in str(block_id) if ch.isalnum())
+
+
 def _render_blocks_public(blocks: list) -> str:
     """Render FlowDeck blocks as plain HTML for public pages."""
     import json as _json
@@ -2047,13 +2070,13 @@ def _render_blocks_public(blocks: list) -> str:
         t = b.get("type", "paragraph")
         c = b.get("content", "") or ""
         if t == "heading_1":
-            html_parts.append(f'<h1 style="font-size:2.5rem;font-weight:700;margin:32px 0 8px;">{c}</h1>')
+            html_parts.append(f'<h1 id="h-{_sanitize_id(b.get("id",""))}" style="font-size:2.5rem;font-weight:700;margin:32px 0 8px;">{c}</h1>')
         elif t == "heading_2":
-            html_parts.append(f'<h2 style="font-size:1.75rem;font-weight:600;margin:28px 0 6px;">{c}</h2>')
+            html_parts.append(f'<h2 id="h-{_sanitize_id(b.get("id",""))}" style="font-size:1.75rem;font-weight:600;margin:28px 0 6px;">{c}</h2>')
         elif t == "heading_3":
-            html_parts.append(f'<h3 style="font-size:1.35rem;font-weight:600;margin:24px 0 4px;">{c}</h3>')
+            html_parts.append(f'<h3 id="h-{_sanitize_id(b.get("id",""))}" style="font-size:1.35rem;font-weight:600;margin:24px 0 4px;">{c}</h3>')
         elif t == "heading_4":
-            html_parts.append(f'<h4 style="font-size:1.15rem;font-weight:600;margin:20px 0 4px;">{c}</h4>')
+            html_parts.append(f'<h4 id="h-{_sanitize_id(b.get("id",""))}" style="font-size:1.15rem;font-weight:600;margin:20px 0 4px;">{c}</h4>')
         elif t == "bulleted_list":
             html_parts.append(f'<li style="margin-left:24px;">{c}</li>')
         elif t == "numbered_list":
@@ -2068,13 +2091,52 @@ def _render_blocks_public(blocks: list) -> str:
                 f'</div>'
             )
         elif t == "toggle":
+            children_html = ""
+            if b.get("children"):
+                children_html = '<div style="margin-left:22px;padding-left:12px;border-left:1px solid rgba(255,255,255,.1);margin-top:4px;">'
+                children_html += _render_blocks_public(b["children"])
+                children_html += "</div>"
             html_parts.append(
-                f'<details style="margin:8px 0;"><summary style="cursor:pointer;font-weight:500;">{c}</summary></details>'
+                f'<details style="margin:8px 0;" open><summary style="cursor:pointer;font-weight:500;">{c}</summary>{children_html}</details>'
             )
         elif t == "quote":
             html_parts.append(
                 f'<blockquote style="border-left:3px solid var(--accent,#4c9aff);margin:12px 0;padding:4px 16px;opacity:.85;">{c}</blockquote>'
             )
+        elif t == "table_of_contents":
+            toc = [
+                x for x in blocks
+                if x.get("type", "").startswith("heading_") and (x.get("content") or "").strip()
+            ]
+            if toc:
+                items = []
+                for h in toc:
+                    lvl = int(h["type"].split("_")[-1])
+                    items.append(
+                        f'<div style="margin-left:{max(0, lvl - 1) * 14}px;padding:5px 8px;font-size:14px;">'
+                        f'<a href="#h-{_sanitize_id(h.get("id",""))}" style="color:inherit;text-decoration:none;display:block;">{h.get("content","")}</a></div>'
+                    )
+                html_parts.append(
+                    '<div style="border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:16px 20px;margin:4px 0;">'
+                    '<div style="font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;opacity:.5;margin-bottom:10px;">On this page</div>'
+                    + "".join(items) + "</div>"
+                )
+        elif t == "math":
+            tex = c.replace("&", "&amp;").replace("<", "&lt;").replace(">", "&gt;")
+            html_parts.append(
+                f'<div data-katex="{tex}" style="margin:12px 0;padding:12px 16px;background:rgba(255,255,255,.04);border-radius:8px;overflow-x:auto;"></div>'
+            )
+        elif t == "columns":
+            cols_html = ""
+            for child in b.get("children") or []:
+                cols_html += (
+                    '<div style="flex:1;min-width:0;padding:10px 12px;background:rgba(255,255,255,.05);'
+                    'border-radius:8px;box-sizing:border-box;">'
+                    + _render_blocks_public([child]) + "</div>"
+                )
+            html_parts.append(
+                f'<div style="display:flex;gap:12px;margin:8px 0 16px;align-items:stretch;">{cols_html}</div>'
+            )
         elif t == "callout":
             icon = b.get("icon", "💡")
             bg = (b.get("style") or {}).get("bgColor", "rgba(76,154,255,.1)")