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/epa_ppls/264-474.md

@@ -0,0 +1,135 @@
+# BUCTRIL 4EC
+
+- EPA Reg No: **264-474**
+- Registrant: BAYER CROPSCIENCE, LLC
+- Signal word: Danger
+- Active ingredients: 3,5-Dibromo-4-hydroxybenzonitrile butyrate (20%); Bromoxynil heptanoate (33.5%)
+- Label accepted: 1987-02-20
+- Source PDF: https://www3.epa.gov/pesticides/chem_search/ppls/000359-00716-19870220.pdf
+
+---
+Ie' :' 
+• 
+r 
+(~. ~ /-
+PRODUCT NUMBER 
+2073 
+CROPS: 
+SUPPLEMENTAL LABELING 
+BUCTRIL R 4EC HERBICIDE 
+WEED CONTROL IN COVER CROPS 
+ON CONSERVATION RESERVE ACRES 
+DIRECTIONS FOR USE 
+r---­I/° . ,i. . 
+) " (; 
+Crested wheatgrasses (all), tall wheatgrass, wester~ wheatbrass, 
+bluebunch wheatgrass, intermediate wheatgrass, perecolal 
+ryegrass, fescues, bentgrasses, Kentucky bluegrass, Canby 
+bluegrass, bahiagrass, Russian wildrye, seedling alfalfa. 
+TARGET WEEDS: 
+Buctril 4EC will control broadleaf weeds mentioned in the GENERAL 
+WEED LIST found on the package label. Follow all use directions 
+on this label and on the Buctril 4EC package label to ensure 
+product performance and crop safety. 
+WHEN TO APPLY: 
+Buctril 4EC may be applied ~ith standard ground boom and aerial 
+hydraulic spray systems to forage crops listed here anytime after 
+the 2-3 leaf stage, but before weeds exceed recommended stages of 
+growth for treatment. Seedling alfalfa may be treated anytime 
+after the 3-trifoliate leaf stage. 
+HOW TO APPLY: 
+Ground Application: Use a standard herbicide boom sprayer that 
+provides uniform and accurate application. Sprayer should be 
+equipped wi th flat fan nozzles spaced a maximum of 20 inches 
+apart and screens no finer than 50 mesh in the nozzle tips and 
+in-line strainers. Apply in a minimum spray volume of 10 gallons 
+per acre wi th minimum spray pressure of 30 psi at the "ti6zzle 
+tips. 
+. "" 
+Aerial AppI1~at10n: The sprayer should be equ1pp~d to provide a 
+uniform and accurate application. Use a minimum spray volumE" of 
+5 gallons per acre using diaphragm-type nozz)"s that produce 'cone 
+or fan spray patterns with a maximum spray pr"ssure of 40 '1;'.>4 at 
+the nozzle tips. Nozzles should he located no further than 3/4' 
+the distance from the center of the aircraft to the end of, the 
+wing or rotor. Nozzle,~ should be oriented at an angle 'bf''t"~een 
+straight down and straight back. The aircraft should disch~rge 
+the spray a maximum of 10 feet above the crop. To mi'l".imize 
+drift, do not apply during periods of gusty winds or when wind 
+exceeds 5 MPH. 
+---
+
+I 
+(' 
+'-
+c 
+I 
+I 
+Page 2 
+" r (7\( . 
+In order to ensure maximum safety and weed control. follow label 
+recommendations on this label and all the cautions and 
+limitations on the package labels of the tank mixture components. 
+USE RECOMMENDATIONS: 
+BUCTRIL 4EC 
+TIMING OF APPLICATION 
+RATE CROP WEED 1/ 
+3/4 Pint/l. Apply anytime in the Most Susceptible Broadleaf 
+fall or spring after Weeds. Apply to weeds up 
+grasses have reached to the 8 leaf stage or 4 
+the 2-3 leaf stage inches in height whichever 
+or when alfalfa has comes first. If weed forms 
+reached the 3-trifo- rosette. apply before 
+liate leaf stage. weeds exceed 2 inches in 
+diameter. 
+'I Pint/A Susceptible Broadleaf , 
+I , , 
+i 
+Weeds. Apply to weeds up 
+to the 4 leaf st.'3.ge or 2 
+inches in height whichever 
+comes first. If weed 
+forms rosette. apply 
+before weeds exceed 1 inch 
+in diameter. 
+1/ Refer to the general weed list on the Buctril 4EC package 
+label for a complete list of susceptible weeds. 
+BUCTRIL 4EC AND MCPA - Grass Crops Only - Do not use on alfalfa. 
+A tank mixture of Buctril 4EC at the recommended rate + MCPA at • • 1/4 to 1/2 pound of active ingredient per acre is used to'e~aden 
+the spectrum of broadleaf weed control. The tank mixt~e .will:":': • • • control the ~/eeds listed on the MCPA label. In addi tion: tilo the •• •••• weeds listed on the Bu..:tril 4EC label. The rate of Buctril 4EC •••• 
+in the tank mixture is the same as when Buctril 4EC 15. ~sed ••••• 
+alone. See BUCTRIL 4E: RECOMMENDATIONS. .,. ..: •• ' 
+• • • •• • Buctril 4EC + MCPA tank mixtures can.be applied after the ~.1eaf'·:··: 
+stage but before the crop reaches the boot stage. Apply only to •• 
+the following grass species: Crested wheatgrasses· ••• ~~ll··:··: 
+•••• wheatgrass. blue bunch wheatgrass. intermediate wheatgrass •• Baeep 
+fescue. canby bluegrass. Russian wildrye. D,~ not apply:to 
+alfalfa. 
+Page 3
+
+'", ." 
+( 
+• 
+USE RESTRICTIONS: 
+Do not allow livestock to graze treated fields. 
+Do not feed treated grasses or alfalfa to livestock. 
+Do not apply Buctril 4EC + MCPA tank-mixtures to alfalfa. 
+Mix with clee.n water only. do not use spray additives or fluid 
+fert:lizers ~S crop injury may occur. 
+Do not apply Buctril 4EC to alfalfa :lhen air temperatures exceed 
+80·F as crop injury may occur. 
+This labeling must be in the possession of the user at the time 
+of pesticide application. 
+All applicable directions. restrictions. and precautions on the 
+Buctril 4EC and MCPA package labels are to be followed. 
+• • •••••• • •• • •• • • •• 
+• 
+•• • •• • • •• 
+• • • • • •• •• 
+• •• • • •• •• • 
+•••• • •• •• • 
+•••••• • •• • • 
+• ••••• • • •• 
+••••• • • • •••• 
+• • ••••• • • •• 
+•••••• • • • •••