fix(docs): fix formatting issues in README.md

- adapt meta-/code-/obs- rules to the local Python benchmark pipeline
- replace db-sql-ddl, code-config-env-scope, test-e2e-pytest with pipeline equivalents
- add code-python-style, data-determinism, data-naming-units, bench-methodology, build-pipeline-tasks
- normalize specs and README typography to ASCII per code-data-formatting
- rewrite root CLAUDE.md trigger table; add .cursorrules and .gitignore
- specs: pipeline plan and task specs 00-11
- rules: 19 binding rule files adapted for this project
- docs: CLAUDE.md rule-trigger table
- config: .cursorrules commit convention, .gitignore excluding out/ and .venv/
- docs: rewrite README.md with pipeline diagrams, setup guide, result placeholders
- config: requirements.txt for the closed dependency list
- datagen: make_lab_config.py writes out/config/lab_config.yaml and .done marker

docs/specs_old/11_export_json.md

@@ -0,0 +1,17 @@
+# Task 11 — Export: JSON
+
+## Goal
+Two JSON products from the frozen canonical snapshot.
+
+## Input
+- `canonical/` snapshot, `schema/` (Tasks 09–10).
+
+## Actions
+1. Write `scripts/export_json.py` (streaming writer; never build the whole document in memory).
+2. **Mega-file** `exports/json/dataset.json`: full hierarchy `data_note → batches → coupons(die) → samples → measurements → points`, plus embedded `data_dictionary` and `instruments`.
+3. **Split set** `exports/json/split/`: directory mirrors the hierarchy; one file per measurement (points inline), plus `index.json` per level.
+4. Each measurement object carries its lineage block `{source_file, mapping_version, schema_version}`.
+
+## Intermediate Result (done when)
+- Both products written; spot-validation: point counts per measurement match canonical.
+- `exports/json/EXPORT_MANIFEST.json` written (snapshot id, versions, counts).