docker: production image + Gitea Actions for monthly refresh

Dockerfile: self-contained image with corpus + Chroma + BM25 baked
in. Drawbar's compose pulls + runs without volume mounts. Built from
sources.json (labels schema), PRODUCT_NAME=crop_chem by default,
HYBRID_SEARCH=true (always-on for production quality). RERANK_URL +
OLLAMA_URL get set at compose time.

.gitea/workflows/refresh.yml: monthly cron (1st @ 06:00 UTC) does
full scrape → reindex → image push. Scrapes Bayer (~30 min) +
EPA PPLS row-crop filtered (~7h). Skips reindex+push if no corpus
diff. Tags pushed: :latest, :<sha12>, :corpus-<YYYY.MM.DD>.

.gitea/workflows/image-only.yml: on-demand or auto on code-only
pushes to main (paths: docs_mcp/, rag/, scrape/, requirements.txt,
Dockerfile, sources.json). Reindexes from committed corpus, builds
image, pushes. ~10 min vs ~9h full refresh.

.gitignore: corpus/ now COMMITTED (4,159 labels, 265 MB of .md +
sidecars). Lets image-only.yml rebuild indexes without re-scraping.
chroma/ + bm25/ still gitignored (regenerable binary indexes).

.dockerignore: drops venv, eval results, PLAN/README/CLAUDE.md,
deploy/, .git/ — keeps the image lean. corpus + chroma + bm25
explicitly NOT in dockerignore (those go INTO the image).

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

corpus/bayer/rt-3.md

@@ -0,0 +1,121 @@
+# RT 3 Herbicide
+
+- **Product class:** herbicide
+- **EPA Reg No:** 524-544
+- **Active ingredients:** Glyphosate, N-(phosphonomethyl)glycine,in the form of its potassium salt
+- **Source:** https://www.cropscience.bayer.us/crop-protection/herbicide/rt-3-herbicide
+- **Label PDF:** https://cs-assets.bayer.com/is/content/bayer/RT-3_2025pdf
+
+---
+
+One of the highest Acid Equivalency (A.E.) per gallon
+products on the market, allowing for lower use rates
+than products with lower A.E.
+RT 3
+®
+ herbicide has shown reliable, consistent
+performance on tough-to-control weeds, such as
+non-glyphosate resistant Russian-thistle and kochia.
+/// BENEFITS
+•  Proven Performance
+Has shown reliable, consistent performance on
+tough-to-control weeds such as non-glyphosate
+resistant Russian-thistle and Kochia.
+•   Effective Weed Control
+Includes a proprietary surfactant system for weed
+control in tough conditions
+/// FACTS
+• Available in high-quality, returnable and reusable
+  containers that can reduce disposal issues on the farm
+• Department of Transportation (DOT) approved
+The Next Level of Weed Control
+Key Pests
+• Cheatgrass
+• Volunteer Wheat
+• Russian-thistle
+• Cereal Rye
+• Kochia
+• Marestail
+• Jointed Goatgrass
+• Downy Brome
+Formulation Information
+• Glyphosate, in the form of its Potassium Salt
+    (4.5 lb ae/gal)
+
+For more information on herbicide group numbers and site-of-action options, visit IWillTakeAction
+Application Rate 32 fl oz/A
+Application Timing
+Preplant, At-Planting,
+Preemergence to corn,
+soybean, cotton,
+cereals and grain crops
+and fallow systems
+Site-of-Action
+Group*  9
+Recommended
+Tankmix Options
+Atrazine
+
+5
+DiFlexx
+®
+      4
+herbicide
+Scoparia
+™
+
+27
+herbicide
+Corvus
+®
+      2
+
+27
+herbicide
+Balance
+®
+ Flexx     27
+herbicide
+Olympus
+®
+       2
+
+herbicide
+Autumn
+™
+ Super     2
+
+herbicide
+Harness
+®
+
+Xtra herbicide    15
+Harness
+®
+
+Xtra 5.6L     5   15
+
+herbicide
+Degree Xtra
+®
+  5  15
+
+herbicide
+Warrant
+®
+
+herbicide
+15
+IMPORT ANT : This bulletin is not intended to provide adequate information for
+use of these products in all crops. Read the label before using these products.
+Observe all label directions and precautions while using these products.
+LEARN MORE
+ALWAYS READ AND FOLLOW PESTICIDE LABEL DIRECTIONS. Roundup Technology® includes glyphosate-based herbicide
+technologies. Balance® Flexx, Corvus®, Degree Xtra®, Harness® Xtra 5.6L Herbicide, Harness® Xtra Herbicide and Scoparia™ are
+restricted use pesticides. Not all products are registered for use in all states and may be subject to use restrictions. The distribution,
+sale, or use of an unregistered pesticide is a violation of federal and/or state law and is strictly prohibited. Check with your local
+dealer or representative for the product registration status in your state. Autumn™, Bayer, Bayer Cross, Corvus®, Degree Xtra®,
+DiFlexx®, Olympus®, Roundup Technology®, RT 3 Powered by Roundup Technology and Design® and Scoparia™ are trademarks
+of Bayer Group. For additional product information call toll-free 1-866-99-BAYER (1-866-992-2937) or visit our website at www.
+BayerCropScience.us. Bayer CropScience LP, 800 North Lindbergh Boulevard, St. Louis, MO 63167. ©2025 Bayer Group. All rights
+reserved.