feat: add page admin market CRUD and update shared_lib

- Market create/delete routes in post admin blueprint
- markets.py service (create_market, soft_delete_market)
- _markets_panel.html admin template with HTMX create/delete
- Update shared_lib submodule (MarketPlace model, migration, URLs)

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

bp/post/admin/routes.py

@@ -533,4 +533,98 @@ def register():
     return redirect(redirect_url)
 
 
+  @bp.get("/markets/")
+  @require_admin
+  async def markets(slug: str):
+    """List markets for this page."""
+    from models.market_place import MarketPlace
+    from sqlalchemy import select as sa_select
+
+    post = (g.post_data or {}).get("post", {})
+    post_id = post.get("id")
+    if not post_id:
+        return await make_response("Post not found", 404)
+
+    page_markets = (await g.s.execute(
+        sa_select(MarketPlace).where(
+            MarketPlace.post_id == post_id,
+            MarketPlace.deleted_at.is_(None),
+        ).order_by(MarketPlace.name)
+    )).scalars().all()
+
+    html = await render_template(
+        "_types/post/admin/_markets_panel.html",
+        markets=page_markets,
+        post=post,
+    )
+    return await make_response(html)
+
+  @bp.post("/markets/new/")
+  @require_admin
+  async def create_market(slug: str):
+    """Create a new market for this page."""
+    from ..services.markets import create_market as _create_market, MarketError
+    from models.market_place import MarketPlace
+    from sqlalchemy import select as sa_select
+    from quart import jsonify
+
+    post = (g.post_data or {}).get("post", {})
+    post_id = post.get("id")
+    if not post_id:
+        return jsonify({"error": "Post not found"}), 404
+
+    form = await request.form
+    name = (form.get("name") or "").strip()
+
+    try:
+        await _create_market(g.s, post_id, name)
+    except MarketError as e:
+        return jsonify({"error": str(e)}), 400
+
+    # Return updated markets list
+    page_markets = (await g.s.execute(
+        sa_select(MarketPlace).where(
+            MarketPlace.post_id == post_id,
+            MarketPlace.deleted_at.is_(None),
+        ).order_by(MarketPlace.name)
+    )).scalars().all()
+
+    html = await render_template(
+        "_types/post/admin/_markets_panel.html",
+        markets=page_markets,
+        post=post,
+    )
+    return await make_response(html)
+
+  @bp.delete("/markets/<market_slug>/")
+  @require_admin
+  async def delete_market(slug: str, market_slug: str):
+    """Soft-delete a market."""
+    from ..services.markets import soft_delete_market
+    from models.market_place import MarketPlace
+    from sqlalchemy import select as sa_select
+    from quart import jsonify
+
+    post = (g.post_data or {}).get("post", {})
+    post_id = post.get("id")
+
+    deleted = await soft_delete_market(g.s, slug, market_slug)
+    if not deleted:
+        return jsonify({"error": "Market not found"}), 404
+
+    # Return updated markets list
+    page_markets = (await g.s.execute(
+        sa_select(MarketPlace).where(
+            MarketPlace.post_id == post_id,
+            MarketPlace.deleted_at.is_(None),
+        ).order_by(MarketPlace.name)
+    )).scalars().all()
+
+    html = await render_template(
+        "_types/post/admin/_markets_panel.html",
+        markets=page_markets,
+        post=post,
+    )
+    return await make_response(html)
+
   return bp