Monorepo: consolidate 7 repos into one

Combines shared, blog, market, cart, events, federation, and account
into a single repository. Eliminates submodule sync, sibling model
copying at build time, and per-app CI orchestration.

Changes:
- Remove per-app .git, .gitmodules, .gitea, submodule shared/ dirs
- Remove stale sibling model copies from each app
- Update all 6 Dockerfiles for monorepo build context (root = .)
- Add build directives to docker-compose.yml
- Add single .gitea/workflows/ci.yml with change detection
- Add .dockerignore for monorepo build context
- Create __init__.py for federation and account (cross-app imports)

market/scrape/product/helpers/price.py

@@ -0,0 +1,42 @@
+
+from __future__ import annotations
+import re
+from typing import Optional, Tuple
+
+def parse_price(text: str) -> Tuple[Optional[float], Optional[str], str]:
+    """
+    Return (value, currency, raw) from a price-like string.
+    Supports symbols £, €, $; strips thousands commas.
+    """
+    raw = (text or "").strip()
+    m = re.search(r'([£€$])?\s*([0-9][0-9.,]*)', raw)
+    if not m:
+        return None, None, raw
+    sym = m.group(1) or ""
+    num = m.group(2).replace(",", "")
+    try:
+        value = float(num)
+    except ValueError:
+        return None, None, raw
+    currency = {"£": "GBP", "€": "EUR", "$": "USD"}.get(sym, None)
+    return value, currency, raw
+
+def parse_case_size(text: str) -> Tuple[Optional[int], Optional[float], Optional[str], str]:
+    """
+    Parse strings like "6 x 500g", "12x1L", "24 × 330 ml"
+    Returns (count, item_qty, item_unit, raw)
+    """
+    raw = (text or "").strip()
+    if not raw:
+        return None, None, None, raw
+    t = re.sub(r"[×Xx]\s*", " x ", raw)
+    m = re.search(r"(\d+)\s*x\s*([0-9]*\.?[0-9]+)\s*([a-zA-Z]+)", t)
+    if not m:
+        return None, None, None, raw
+    count = int(m.group(1))
+    try:
+        item_qty = float(m.group(2))
+    except ValueError:
+        item_qty = None
+    unit = m.group(3)
+    return count, item_qty, unit, raw