docs(packshots): record why sku_l08 could not be sourced

The DECISION says l08 has no retailer listing and that the only corroborated
ペリペリミックス is a different brand at 50g. The Rakuten search that shows this
was sitting unreferenced in the repo root as rk2.html; it is now the evidence
file behind the claim, with a manifest in the same shape as l04/l07/l10.

The search returns 141 results and none is the product: every ペリペリ hit is
SPICEDREAM at 50g or 195ml. l08 is the one catalog row with no corroborating
source, so a wrong label there would not be detectable from the catalog alone.

recognization/data/packshots/research/sku_l08/manifest.json

@@ -0,0 +1,16 @@
+{
+ "sku": "sku_l08",
+ "canonical_product": "スパイシーストーム ペリペリミックス 30g",
+ "research_date": "2026-09-29",
+ "conclusion": "Not sourced. No retailer listing for this product exists, so the row's name and size are themselves unverified.",
+ "evidence": [
+  {
+   "source": "楽天市場 search",
+   "url": "https://search.rakuten.co.jp/search/mall/%E3%82%B9%E3%83%91%E3%82%A4%E3%82%B7%E3%83%BC%E3%82%B9%E3%83%88%E3%83%BC%E3%83%A0%20%E3%83%9A%E3%83%AA%E3%83%9A%E3%83%AA%E3%83%9F%E3%83%83%E3%82%AF%E3%82%B9%2030g/",
+   "captured": "rakuten-search-2026-09-29.html",
+   "supports": "The search returns 141 results, none of them this product. Every ペリペリ hit is a different brand: SPICEDREAM PERIPERI MIX 50g瓶 and SPICEDREAM PERIPERIMIXソース 195ml. The catalog's row claims 30g from a brand the marketplace does not carry."
+  }
+ ],
+ "why_it_matters": "sku_l08 is the one catalog row with no corroborating source. Its packshot is enrolled and the text lane can name it from a read, but nothing outside the repository confirms the name or the size, so a wrong label on this row would not be detectable from the catalog alone.",
+ "images": []
+}