Phase 4-5: deployable container + corpus snapshot + CI fixes

deploy/docker-compose.yml — replace <product>/<registry> placeholders
with concrete values for Drawbar's stack:
- image: git.jpaul.io/justin/seed-mcp:latest (CF tunnel for pulls; CI
  pushes via LAN 192.168.0.2:1234 to avoid 100 MB body cap)
- container_name: seed-mcp
- port 8001:8000 (8001 host-side to not collide with crop-chem-docs
  on 8000)
- PRODUCT_NAME=crop_seed, hybrid search enabled, stateless HTTP
- llama-rerank shared with crop-chem-docs (NOT redefined here —
  expected to already be in Drawbar's parent compose network)
- networks.drawbar-mcp external: true so seed-mcp joins the existing
  cross-MCP shared network

.gitignore — corpus/ is now COMMITTED, not ignored. The monthly
refresh workflow scrapes and commits corpus changes; the image-only
workflow rebuilds indexes from the committed corpus. Allowing the
corpus to flow through git means the :corpus-YYYY.MM.DD image tag
pins to a specific seed-catalog snapshot. chroma/ and bm25/ remain
ignored — those are deterministically derived from corpus.

Initial committed snapshot: 614 varieties.
- bayer_seeds: 475 (DEKALB 288 + Asgrow 102 + WestBred 85)
- golden_harvest: 139 (Syngenta corn + soy; 36 sitemap URLs
  302-redirected = discontinued)

rag/chunk.py — normalize brand and crop to uppercase/lowercase in
Chroma metadata so cross-vendor brand-filter lookups don't break on
casing inconsistency (Bayer stores "DEKALB", Golden Harvest stores
"Golden Harvest"; _build_where uppercases user-supplied brand which
matched the former but not the latter pre-fix). Sidecar JSON keeps
original casing for display.

Stub scrapers (nk, agripro, becks_pfr, becks_products) — change
return code from 2 to 0 so the monthly-refresh CI workflow doesn't
fail on deferred sources. Real implementations will return 0 on
success / 1 on failure when they ship.

Smoke-tested cross-vendor retrieval against the 614-chunk index:
- list_versions shows both vendors with correct facet counts
- broad "corn hybrid 100 RM" query returns both DEKALB and Golden
  Harvest hits in top 5
- brand='Golden Harvest' filter returns 3 GH-only varieties
- variety-code prefilter still works (E085Z5 → top hit on GH)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

corpus/golden_harvest/golden_harvest-gh0936e3.json

@@ -0,0 +1,151 @@
+{
+  "source": "golden_harvest",
+  "source_key": "golden_harvest-gh0936e3",
+  "vendor": "Syngenta",
+  "brand": "Golden Harvest",
+  "product_name": "GH0936E3",
+  "product_id": null,
+  "hybrid_prefix": "GH0936E3",
+  "hybrid_suffix": null,
+  "crop": "soybeans",
+  "release_year": null,
+  "relative_maturity": null,
+  "maturity_group": "0.9",
+  "wheat_class": null,
+  "trait_stack": [
+    "E3"
+  ],
+  "trait_descriptions": [
+    "Enlist E3® (2,4-D + glyphosate + glufosinate)"
+  ],
+  "positioning_statement": "Strong Standability and Soybean White Mold Tolerance",
+  "strengths": [],
+  "characteristics_groups": [
+    {
+      "label": "RECOMMENDED MANAGEMENT",
+      "type": "list",
+      "items": [
+        {
+          "characteristic": "Drought prone",
+          "value": "✓"
+        },
+        {
+          "characteristic": "High pH",
+          "value": "✓"
+        },
+        {
+          "characteristic": "Highly productive",
+          "value": "✓"
+        },
+        {
+          "characteristic": "Variable",
+          "value": "✓"
+        },
+        {
+          "characteristic": "Poorly drained",
+          "value": "✓"
+        }
+      ]
+    },
+    {
+      "label": "PLANT CHARACTERISTICS",
+      "type": "table",
+      "items": [
+        {
+          "characteristic": "Plant height",
+          "value": "Medium"
+        },
+        {
+          "characteristic": "Canopy type",
+          "value": "Medium-Bush"
+        },
+        {
+          "characteristic": "Branching",
+          "value": "Moderate"
+        },
+        {
+          "characteristic": "Growth habit",
+          "value": "Indeterminate"
+        },
+        {
+          "characteristic": "Flower color",
+          "value": "Purple"
+        },
+        {
+          "characteristic": "Pubescence color",
+          "value": "Gray"
+        },
+        {
+          "characteristic": "Pod color",
+          "value": "Tan"
+        },
+        {
+          "characteristic": "Hilum color",
+          "value": "Buff"
+        },
+        {
+          "characteristic": "Chloride sensitivity",
+          "value": "Includer"
+        }
+      ]
+    },
+    {
+      "label": "AGRONOMIC CHARACTERISTICS",
+      "type": "table",
+      "items": [
+        {
+          "characteristic": "Seed size",
+          "value": "Medium"
+        },
+        {
+          "characteristic": "Avg protein %",
+          "value": "35.6"
+        },
+        {
+          "characteristic": "Avg oil %",
+          "value": "20.9"
+        },
+        {
+          "characteristic": "Metribuzin response",
+          "value": "R"
+        },
+        {
+          "characteristic": "Sulfentrazone response",
+          "value": "2"
+        }
+      ]
+    },
+    {
+      "label": "DISEASE AND PEST",
+      "type": "table",
+      "items": [
+        {
+          "characteristic": "Phytophthora root rot",
+          "value": "Rps1k, Rps3a"
+        },
+        {
+          "characteristic": "Soybean cyst nematode",
+          "value": "MR3, MR14"
+        },
+        {
+          "characteristic": "SCN source",
+          "value": "PI88788"
+        },
+        {
+          "characteristic": "RKN–Incognita",
+          "value": "-"
+        }
+      ]
+    }
+  ],
+  "_scale_direction": "1-9 (9 = best)",
+  "regional_recommendations": [],
+  "image_url": null,
+  "techsheet_url": "https://assets.syngentaebiz.com/pdf/techsheets/GH0936E3_260310.pdf",
+  "source_urls": [
+    "https://www.goldenharvestseeds.com/products/soybean/gh0936e3"
+  ],
+  "sitemap_last_modified": "2026-04-28",
+  "fetched_at": "2026-05-25T17:32:38.383733+00:00",
+  "scraper_version": "0.1.0"
+}