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/dekalb-dkc69-98rib.md

@@ -0,0 +1,91 @@
+# DKC69-98RIB BRAND BLEND
+
+- **Vendor:** Bayer
+- **Brand:** Dekalb
+- **Crop:** Corn
+- **Relative maturity:** 119
+- **Traits:** SSRIB (SmartStax® RIB Complete® corn blend)
+- **Release year:** 2021
+- **Source:** https://www.cropscience.bayer.us/corn/dekalb/dekalb-dkc69-98rib-corn
+- **Rating scale (Bayer):** 1-9 (9 = best)
+
+---
+## Positioning
+
+DKC69-98RIB Brand Blend is a 119 RM corn that offers excellent yield performance in the Southern Midwest and coastal U.S. Typically an attractive, robust plant type; it offers excellent staygreen and test weight. Ability to perform in stressed growing conditions.
+
+## Strengths & management
+
+- Plant at medium to medium high plant populations
+- Has shown excellent test weight, grain quality
+- Position on moderate to highly productive soils to maximize yield potential
+- Has shown adequate husk coverage
+- Avoid areas with high levels of Goss's Wilt pressure
+- Placement caution in areas of high greensnap risk
+
+## Disease Ratings
+
+| Characteristic | Value |
+|---|---|
+| GRAY LEAF SPOT | 5 |
+| SOUTHERN RUST | 4 |
+| ANTHRACNOSE STALK ROT | 4 |
+| GOSS'S WILT | 5 |
+| SOUTHERN CORN LEAF BLIGHT | 3 |
+| NORTHERN CORN LEAF BLIGHT - RACE 1 | 3 |
+
+## Growth
+
+| Characteristic | Value |
+|---|---|
+| SEEDLING GROWTH | 3 |
+| EMERGENCE | 3 |
+| ROOT STRENGTH | 3 |
+| STALK STRENGTH | 3 |
+| DROUGHT TOLERANCE | 3 |
+| GREENSNAP TOLERANCE | 5 |
+| PLANT HEIGHT | Tall |
+| EAR PLACEMENT | Med High |
+
+## Management
+
+| Characteristic | Value |
+|---|---|
+| GDUS TO MID-POLLINATION | 1400 |
+| GDUS TO BLACK LAYER | 2970 |
+| VALUE ADDED TRAIT | SSRIB |
+| RELATIVE MATURITY | 119 |
+| PLANTING RATE | Med Low |
+| NEW PRODUCT | NO |
+| VARIETY | 01080319 |
+
+## Harvest
+
+| Characteristic | Value |
+|---|---|
+| STAYGREEN | 2 |
+| HARVEST APPEARANCE | 2 |
+| DRYDOWN | 3 |
+| TEST WEIGHT | 1 |
+
+## Herbicide
+
+| Characteristic | Value |
+|---|---|
+| GROWTH REGULATORS SENSITIVITY | A |
+| ISOXAZOLES SENSITIVITY - PREEMERGENCE | A |
+| SULFONYLUREAS SENSITIVITY | A |
+
+## Plant Description
+
+| Characteristic | Value |
+|---|---|
+| COB COLOR | Red |
+| KERNEL CAP COLOR | Yellow |
+| KERNEL ROW | 18 |
+
+## Regional seed-guide listings
+
+- **2024 CA Grain Corn Guide** — agronomist: Barb Kutzner
+- **2024 WTX, OK, and NM SEED GUIDE** — agronomist: Kagan Randolph
+- **2025 CA Grain Corn Guide** — agronomist: Barb Kutzner