seed-mcp scaffold: clone docs-mcp-template, customize for crop_seed PRODUCT_NAME

Sibling project to crop-chem-docs, same MCP-template lineage. Corpus is
seed/hybrid varieties across 6 vendors instead of pesticide labels.

What's customized vs. the template:
- CLAUDE.md: vendor matrix, build priority, Pioneer fallback policy,
  canonical sidecar schema (per-crop), Golden Harvest disease-scale
  reversal gotcha, no-IPv6 / HTTPS-clone note
- README.md: vendor coverage table, tool list, phase status
- Dockerfile: PRODUCT_NAME=crop_seed default, sources.json (not
  bundles.json), HYBRID_SEARCH=true, OLLAMA_URL + RERANK_URL Docker
  DNS defaults (same llama-rerank sidecar as crop-chem-docs)
- .gitea/workflows/refresh.yml: monthly cron (seed catalogs move
  slowly), 5 GREEN scraper steps, corpus-YYYY.MM.DD tag for Drawbar
  pinning, continue-on-error on GC step
- .gitea/workflows/image-only.yml: paths filter + cancel-in-progress
  concurrency group
- scripts/registry_gc.py: lifted from crop-chem-docs (correct Gitea
  packages API URL + UA header to bypass CF block on default
  Python-urllib UA)
- sources.json: catalog of 6 sources + scope_filter + per-source
  schema notes + Pioneer-exclusion rationale
- scrape/runner.py: dispatcher with --all = GREEN-only
- scrape/sources/{bayer_seeds,golden_harvest,nk,agripro,becks_pfr,
  becks_products}.py: stub modules with implementation notes
- docs_mcp/server.py: PRODUCT_NAME default → crop_seed,
  PRODUCT_DOCS_URL → repo URL

Pioneer is intentionally NOT a source. ToS bans automation; dealer
locator is login-gated. The MCP returns a curated fallback lesson
directing the user to pioneer.com.

Next phases:
- Phase 1: implement bayer_seeds (lift-and-shift from crop-chem-docs
  Bayer scraper; same __NEXT_DATA__ infra)
- Phase 7: curate eval/queries.jsonl
- Phase 11: lessons.md with Pioneer fallback + disease-scale notes

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

README.md

@@ -0,0 +1,84 @@
+# seed-mcp
+
+MCP server over the public catalogs of major US row-crop seed
+vendors — corn, soybeans, wheat. Sibling project to
+[`crop-chem-docs`](https://git.jpaul.io/justin/crop-chem-docs)
+(pesticide labels), feeding the same Drawbar farm-advisor AI.
+
+The server exposes per-variety records with **agronomic ratings**,
+**disease tolerance**, **trait stack**, **maturity**, and
+**regional notes** — so the advisor can answer questions like
+"which corn hybrid for sandy soil, drought-prone, RM ≤105 in
+northeast Iowa?" without rummaging through individual brand sites.
+
+## Vendor coverage
+
+| Vendor | Verdict | Varieties | Notes |
+|---|---|---|---|
+| Bayer seeds (DEKALB + Asgrow + WestBred) | 🟢 | ~475 | Same `cropscience.bayer.us` Next.js infra as crop-chem-docs |
+| Golden Harvest (Syngenta) | 🟢 | ~175 | Sitemap + server-rendered HTML + Syngenta CDN PDFs |
+| NK (Syngenta) | 🟢 | 29 | Shares PDF fetcher with Golden Harvest |
+| AgriPro (Syngenta wheat) | 🟢 | 24 | Drupal Views, server-rendered |
+| Beck's PFR | 🟡 | 2,089 | Public Sanity GROQ API (no auth) |
+| Beck's products | 🟡 | 860 | Identity-only until SeedIQ XHR sniffed |
+| Pioneer (Corteva) | 🔴 | — | ToS bans automation — curated fallback lesson instead |
+
+## Quick start
+
+```bash
+git clone https://git.jpaul.io/justin/seed-mcp.git
+cd seed-mcp
+python -m venv venv && source venv/bin/activate
+pip install -r requirements.txt
+
+# Run one scraper
+python -m scrape.runner --source bayer_seeds --force
+
+# Rebuild indexes
+python -m rag.index --rebuild
+
+# Local MCP server (stdio for Claude Desktop dev)
+python -m docs_mcp.server --transport stdio
+```
+
+## Tools exposed
+
+| Tool | Purpose |
+|---|---|
+| `search_docs` | Hybrid + rerank variety search with crop / RM / trait / region filters |
+| `get_page` | Full variety record by `(source, source_key)` |
+| `list_versions` | Discover crops, brands, traits, RM/MG ranges, wheat classes |
+| `corpus_status` | Counts + freshness; useful for health probes |
+| `crop_seed_api_lessons` | Curated agronomy lessons — Pioneer fallback, disease-scale normalization, regional placement heuristics |
+
+## Build phases
+
+This is a clone of [`docs-mcp-template`](https://git.jpaul.io/justin/docs-mcp-template).
+The 13 phases in `PLAN.md` apply:
+
+| Phase | Status |
+|---|---|
+| 0 — scaffold | done |
+| 1 — first scraper (bayer_seeds) | next |
+| 2 — chunk + index | pending |
+| 3 — baseline MCP tools | template defaults |
+| 4-5 — Dockerfile + CI | done (placeholders filled) |
+| 6 — reranker | shares `llama-rerank` sidecar with crop-chem-docs |
+| 7 — eval harness | pending (curate ~25 queries) |
+| 8 — hybrid search | done (template) |
+| 9 — diff_versions, list_cluster | optional |
+| 11 — `crop_seed_api_lessons` curated layer | pending |
+
+See `CLAUDE.md` for the canonical sidecar schema and the
+disease-scale-normalization gotcha (Golden Harvest is reversed).
+
+## Infrastructure
+
+- **Registry**: `git.jpaul.io/justin/seed-mcp:latest` (Watchtower) /
+  `:corpus-YYYY.MM.DD` (production pin)
+- **Embedder**: shared Ollama pool with crop-chem-docs (Gitea-host
+  GPUs + Windows Ollama; CI never hits trashpanda's production Ollama)
+- **Reranker**: shared `llama-rerank` sidecar on trashpanda's Tesla
+  P4 (one container, both MCPs use it)
+- **PRODUCT_NAME**: `crop_seed` (not `seed_mcp` — used in Chroma
+  collection, BM25 db filename, and `crop_seed_api_lessons` tool)