Reorganize directory, add manual dataset and sync tooling

- Move all scripts to scripts/, web assets to web/, analysis results
  into self-contained data/readings/<type>_<YYYYMMDD>/ directories
- Add data/readings/manual_20260320/ with 32 JSON readings from
  git.medlab.host/ntnsndr/protocol-bicorder-data
- Add scripts/json_to_csv.py to convert bicorder JSON files to CSV
- Add scripts/sync_readings.sh for one-command sync + re-analysis of
  any dataset backed by a .sync_source config file
- Add scripts/classify_readings.py to apply the LDA classifier to all
  readings and save per-reading cluster assignments
- Add --min-coverage flag to multivariate_analysis.py for sparse/shortform
  datasets; also applies in lda_visualization.py
- Fix lda_visualization.py NaN handling and 0-d array annotation bug
- Update README.md and WORKFLOW.md to document datasets, sync workflow,
  shortform handling, and new scripts

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

analysis/scripts/chunk.sh

@@ -0,0 +1,8 @@
+#!/bin/bash
+
+prompt="Return csv-formatted data (with no markdown wrapper) that consists of a list of protocols discussed or referred to in the attached text. Protocols are defined extremely broadly as 'patterns of interaction,' and may be of a nontechnical nature. Protocols should be as specific as possible, such as 'Sacrament of Reconciliation' rather than 'Religious Protocols.' The first column should provide a brief descriptor of the protocol, and the second column should describe it in a substantial paragraph of 3-5 sentences, encapsulated in quotation marks to avoid breaking on commas. Be sure to paraphrase rather than quoting directly from the source text."
+
+for file in "$@"; do
+    llm -m gemma3:12b -f $file "$prompt" >> output.csv
+    echo "Completed $file"
+done