# Extension Census — ledger

Extracted from `repo_files.tsv` (curated 3,344-row file census) in `/root/troupe-standup`.

Rule: basename = final path component; extension = substring after the LAST dot, lowercased;
dotfiles (leading dot, e.g. `.gitignore`, `.hermes-tmp.GOYIwZ`) and files with no dot are
grouped as `(none)`.

| rank | extension | file_count |
|---|---|---|
| 1 | md | 829 |
| 2 | png | 803 |
| 3 | py | 653 |
| 4 | txt | 551 |
| 5 | json | 230 |
| 6 | sh | 56 |
| 7 | html | 55 |
| 8 | csv | 43 |
| 9 | svg | 31 |
| 10 | (none) | 18 |
| 11 | age | 16 |
| 12 | tsv | 15 |
| 13 | xml | 12 |
| 14 | log | 5 |
| 15 | sha256 | 4 |
| 16 | pdf | 4 |
| 17 | jsonl | 3 |
| 18 | mp3 | 3 |
| 19 | c | 2 |
| 20 | jpg | 2 |
| 21 | diff | 2 |
| 22 | py""" | 1 |
| 23 | check | 1 |
| 24 | md5 | 1 |
| 25 | dl | 1 |
| 26 | rc | 1 |
| 27 | yaml | 1 |
| 28 | gz | 1 |

*Total files: **3344** (matches the 3344 data rows in repo_files.tsv).*

## Verification notes

- `repo_exts.tsv` (the existing table) lists 29 rows but carries a duplicated header line
  and two spurious rows — `goyiwz` (a parse artifact of the dotfile `.hermes-tmp.GOYIwZ`)
  and `py""""` (a parse artifact of the escaped `wizard-work/beam/CHECK` row).
- Existing `json` (231) vs this table (230): existing classified the dotfile `.chk.json`
  as json; under the dotfile rule shown above it is `(none)`.
- Existing `(none)` (16) vs this table (18): two dotfiles (`.chk.json`, `.hermes-tmp.GOYIwZ`)
  are counted as `(none)` here.
- `py""""` appears in both tables at count 1, so it is a shared value, not a discrepancy;
  its source row is the escaped beam CHECK row.
- `repo_files.tsv` records the beam CHECK script twice (rank 1 is an escaped duplicate of
  rank 620); both rows are included as-is.