fix(grocery-basket): fix JP sites, add TRY/EGP/INR floors, evict bad routes (#2324)

The bilateral outlier gate (previous commit) catches bad prices AFTER the
fact. This commit prevents them from being accepted in the first place and
forces re-scraping on the very next seed run.

Japan sites (grocery-basket.json):
  Before: kakaku.com, price.com — price comparison aggregators that show
          per-gram/per-serving prices in LLM summaries, not per-kg shelf prices.
          price.com is not even Japan-specific.
  After:  seiyu.co.jp, life.co.jp, aeon-net.com — actual Japanese supermarket
          chains with clear per-unit JPY shelf prices.

CURRENCY_MIN additions (seed-grocery-basket.mjs):
  TRY: 10  — Turkish shelf prices are always ≥ 10 TRY; the bad values
              (2.75–5.61 TRY) were per-100g sub-unit matches.
  EGP: 5   — Egyptian shelf prices are ≥ 5 EGP; 2.95/3.25 EGP were fractional.
  INR: 12  — Indian shelf prices are ≥ 12 INR; 10 INR potatoes was stale.

One-time eviction (_migration:bad-prices-v1):
  All JP routes — stale since sites changed; forces fresh searches on new domains.
  TR: sugar, eggs, milk, oil — confirmed sub-unit price scrapes.
  EG: salt, bread, milk — confirmed too-cheap scrapes.
  IN: potatoes, milk — confirmed too-cheap scrapes.
  Next seed run re-fetches all evicted items from EXA/Firecrawl from scratch.

shared/grocery-basket.json

@@ -114,8 +114,9 @@
       "currency": "JPY",
       "flag": "🇯🇵",
       "sites": [
-        "kakaku.com",
-        "price.com"
+        "seiyu.co.jp",
+        "life.co.jp",
+        "aeon-net.com"
       ]
     },
     {