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/bayer_seeds/asgrow-k44vgx7.json

@@ -0,0 +1,146 @@
+{
+  "source": "bayer_seeds",
+  "source_key": "asgrow-k44vgx7",
+  "vendor": "Bayer",
+  "brand": "ASGROW",
+  "product_name": "K44VGX7 BRAND",
+  "product_id": "SOYBEANS_K44VGX7 BRAND_ASGROW_US",
+  "hybrid_prefix": "K44VGX7",
+  "hybrid_suffix": "BRAND",
+  "crop": "soybeans",
+  "release_year": 2027,
+  "relative_maturity": null,
+  "maturity_group": "4.4",
+  "wheat_class": null,
+  "trait_stack": [
+    "VGX"
+  ],
+  "trait_descriptions": [],
+  "positioning_statement": null,
+  "strengths": [
+    "Excellent yield potential",
+    "Medium Short plant height with above average standability",
+    "Sulfonylurea (SR) resistance with Stem Canker tolerance and Chloride excluder"
+  ],
+  "characteristics_groups": [
+    {
+      "label": "DISEASE RATINGS",
+      "type": "disease ratings",
+      "items": [
+        {
+          "characteristic": "SOUTHERN ROOT KNOT (M. INCOGNITA)",
+          "value": "S"
+        },
+        {
+          "characteristic": "SOYBEAN CYST NEMATODE",
+          "value": "R"
+        },
+        {
+          "characteristic": "PRR RESISTANCE",
+          "value": "Rps1c"
+        },
+        {
+          "characteristic": "PRR FIELD TOLERANCE",
+          "value": "5"
+        },
+        {
+          "characteristic": "BROWN STEM ROT",
+          "value": "2"
+        },
+        {
+          "characteristic": "FROGEYE LEAF SPOT",
+          "value": "6"
+        },
+        {
+          "characteristic": "SOUTHERN STEM CANKER",
+          "value": "2"
+        }
+      ]
+    },
+    {
+      "label": "SENSITIVITY",
+      "type": "sensitivity",
+      "items": [
+        {
+          "characteristic": "CHLORIDE SENSITIVITY",
+          "value": "Exc"
+        }
+      ]
+    },
+    {
+      "label": "MANAGEMENT",
+      "type": "management",
+      "items": [
+        {
+          "characteristic": "MATURITY GROUP",
+          "value": "4"
+        }
+      ]
+    },
+    {
+      "label": "PLANT DESCRIPTION",
+      "type": "plantDescription",
+      "items": [
+        {
+          "characteristic": "GROWTH HABIT",
+          "value": "Indeterminate"
+        },
+        {
+          "characteristic": "HILUM COLOR",
+          "value": "BL"
+        },
+        {
+          "characteristic": "POD WALL COLOR",
+          "value": "BR"
+        },
+        {
+          "characteristic": "RELATIVE MATURITY",
+          "value": "4.4"
+        },
+        {
+          "characteristic": "HERBICIDE TOLERANT TRAIT",
+          "value": "RR2X/SR"
+        },
+        {
+          "characteristic": "CANOPY",
+          "value": "M"
+        },
+        {
+          "characteristic": "FLOWER COLOR",
+          "value": "Purple"
+        },
+        {
+          "characteristic": "PUBESCENCE COLOR",
+          "value": "LT"
+        }
+      ]
+    },
+    {
+      "label": "PRODUCTION",
+      "type": "production",
+      "items": [
+        {
+          "characteristic": "EMERGENCE",
+          "value": "2"
+        },
+        {
+          "characteristic": "STANDABILITY",
+          "value": "4"
+        },
+        {
+          "characteristic": "IRON CHLOROSIS",
+          "value": "5"
+        }
+      ]
+    }
+  ],
+  "_scale_direction": "1-9 (9 = best)",
+  "regional_recommendations": [],
+  "image_url": "https://cs-assets.bayer.com/is/image/bayer/Kindred-soybean-Bag-V2-3D-copy-4",
+  "source_urls": [
+    "https://www.cropscience.bayer.us/soybeans/asgrow/asgrow-k44vgx7-soybeans"
+  ],
+  "sitemap_last_modified": "2026-05-12T14:41:05.005Z",
+  "fetched_at": "2026-05-25T17:00:54.819156+00:00",
+  "scraper_version": "0.1.0"
+}