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/westbred-wb9990.md

@@ -0,0 +1,69 @@
+# WB9990 BRAND
+
+- **Vendor:** Bayer
+- **Brand:** Westbred
+- **Crop:** Wheat
+- **Maturity:** Late
+- **Release year:** 2018
+- **Source:** https://www.cropscience.bayer.us/wheat/westbred/westbred-wb9990-wheat
+- **Rating scale (Bayer):** 1-9 (9 = best)
+
+---
+## Positioning
+
+WB9990 is an Awnless Hard Red Spring Wheat variety for forage use with excellent test weight. This late-maturing variety also has excellent Yellow (Stripe) Rust and Leaf Rust tolerance.
+
+## Strengths & management
+
+- Awnless Forage Variety
+- High Forage Yield Potential
+- Very Good Forage Digestability and Quality
+- Very Good Standability
+- Single-Use License Variety
+
+## Key Characteristics
+
+| Characteristic | Value |
+|---|---|
+| PROTEIN CONTENT | 5 |
+| STANDABILITY | 3 |
+| YELLOW (STRIPE) RUST | 1 |
+
+## Management
+
+| Characteristic | Value |
+|---|---|
+| HERBICIDE TOLERANCE | - |
+| MATURITY GROUP | Late |
+| PLANTING RATE | High |
+| HEAD TYPE | Smooth |
+| YIELD POTENTIAL | 1 |
+| PLANT VARIETY PROTECTION | Yes |
+| LIMITED USE LICENSE AGREEMENT REQUIRED | Yes |
+| CROP SYSTEM | IR |
+| PATENT PROTECTION | Yes |
+| NEW PRODUCT | No |
+
+## Production
+
+| Characteristic | Value |
+|---|---|
+| PLANT HEIGHT | Medium-Tall |
+| TEST WEIGHT | 2 |
+| STANDABILITY | 3 |
+
+## Quality
+
+| Characteristic | Value |
+|---|---|
+| PROTEIN CONTENT | 5 |
+| MILLING/BAKING QUALITY | 7 |
+
+## Pest And Disease Resistance
+
+| Characteristic | Value |
+|---|---|
+| BARLEY YELLOW DWARF | 5 |
+| LEAF RUST | 1 |
+| SEPTORIA TRITICI | 4 |
+| YELLOW (STRIPE) RUST | 1 |