Expand taxonomy: category 16 (Modern AI, LLMs & Agentic Systems) + GPU & kernel-methods rows #4

	name: Validate matrix CSVs
	on:
	pull_request:
	paths: ["data/*.csv"]
	push:
	branches: [main]
	paths: ["data/*.csv"]
	jobs:
	validate:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4
	- name: Validate CSV structure
	run: \|
	python3 - <<'PY'
	import csv, json, sys
	cfg = json.load(open("config.json"))
	allowed = set(v for v in cfg.get("levels", ["", "I", "D", "E"]))
	problems = 0
	for ds in cfg["datasets"]:
	path, keyn = ds["path"], ds["keyCols"]
	rows = list(csv.reader(open(path, encoding="utf-8")))
	if not rows:
	print(f"::error file={path}::empty file"); problems += 1; continue
	header = rows[0]
	width = len(header)
	if len(set(header)) != width:
	print(f"::error file={path}::duplicate column names"); problems += 1
	keys = set()
	for i, r in enumerate(rows[1:], start=2):
	if len(r) != width:
	print(f"::error file={path},line={i}::row has {len(r)} fields, expected {width}"); problems += 1
	continue
	k = "\x1f".join(r[:keyn])
	if k in keys:
	print(f"::error file={path},line={i}::duplicate topic key {r[:keyn]}"); problems += 1
	keys.add(k)
	for j, v in enumerate(r[keyn:], start=keyn):
	if v.strip() not in allowed:
	print(f"::error file={path},line={i}::invalid cell value {v!r} in column {header[j]!r} (allowed: blank, I, D, E)")
	problems += 1
	print(f"{path}: {len(rows)-1} rows x {width} cols checked")
	sys.exit(1 if problems else 0)
	PY

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