NKESSLING@TERMINALSCREEN WORKOpen to work from Nov 2026RTM 22:57:59 · UTC 20:57

WREN ~/work/wren MAINTAINED

WREN★ 1,045▲ 1.43 commits/day, 40 wkTYPESCRIPT · 2025–26

Release notes that write themselves from commits

Reads conventional commits, groups them by scope, links every pull request and opens a draft.

ROLE: Author
STACK: TypeScript · Node · CI action
YEARS: 2025–26

COMMIT RATE · 40 WEEKS · WREN

11 minsaved per release

320repos using the action

98%notes shipped unedited

README.md · CASE STUDY

Reads conventional commits, groups them by scope, links every pull request and opens a draft.

Release notes were the last chore of every release, so they were late or missing. The information was already in the commit history.

How it works

wren parses conventional commits, puts breaking changes first, groups the rest by scope and links each line to its pull request. It never publishes. It opens a draft for a person to approve.

Adoption

It runs as a CI action in 320 public repositories. 98% of drafts ship without edits, which is the number I watch most.

SCRN WORK · SCREENER6 OF 8 SHOWN

More projects.

Every project opens the same way: problem, fix, numbers.

ROLEKEY RESULT

TIDEA write-ahead log that survives the power cordtidewaterAuthor · maintainerRust2024–264,8121.92 GB/s append, one core KILNA build cache that made CI six times fasterkilnAuthorGo2023–262,2076.1x faster CI, median LOOMA Postgres job queue that stays fair under loadloom-queueAuthor · 3 contributorsTypeScript2024–251,39012k/s jobs on one node WRENRelease notes that write themselves from commitswrenAuthorTypeScript2025–261,04511 min saved per release PRSMRead traces in the terminal and diff two runsprism-traceAuthorRust2025961O(n log n) trace diff, was O(n²)FERNA small config language with typesfernAuthorZig2025–266120.4 ms compile a 2k-line config

ALL 8 PROJECTS ↗

NOTE WRITING · RESEARCH NOTES8 NOTES

Notes from the work.

Short write-ups of things that broke and how they got fixed. Plain language, real numbers.

Storage

18 SEPT 20267 min READ

You also have to fsync the directory

Why a new file is not durable until its directory is, and the crash test that proved it.

READ NOTE <GO>

30 AUG 2026Build systemsCache keys are inputs, not branch names9 min 12 JUL 2026DatabasesFair queues in Postgres, with SKIP LOCKED11 min 02 JUN 2026StorageGroup commit, drawn by hand6 min ALL NOTES ↗