feat: initialize market app with browsing, product, and scraping code

Split from coop monolith. Includes:
- Market/browse/product blueprints
- Product sync API
- Suma scraping pipeline
- Templates for market, browse, and product views
- Dockerfile and CI workflow for independent deployment

scrape/product/extractors/title.py

@@ -0,0 +1,17 @@
+
+from __future__ import annotations
+from typing import Dict
+from bs4 import BeautifulSoup
+from utils import normalize_text
+from ..registry import extractor
+
+@extractor
+def ex_title(soup: BeautifulSoup, url: str) -> Dict:
+    title = None
+    for sel in ["h1.page-title span", "h1.page-title", "h1.product-name", "meta[property='og:title']"]:
+        el = soup.select_one(sel)
+        if el:
+            title = normalize_text(el.get_text()) if el.name != "meta" else el.get("content")
+            if title:
+                break
+    return {"title": title or "Product"}