Parse logs for summaries of decisions, discussions and user assistance

Background

Raw logs are not especially useful on their own. It would be nice to either have just an index of tags for where significant conversations happened by topic, or, even better, generate summaries of feedback and decisions and interactions worth highlighting and preserving in some fashion. The suggestions below are one approach to accomplishing this this.

The idea

Tag the chat logs by subject at conversation granularity, so the reasoning that
never made it into documentation or issues becomes findable — design arguments
settled in chat, bug diagnoses nobody wrote up, practices the project follows
because someone explained them well once.

The logs are already public and complete. What's missing is any way into them
other than reading chronologically.

Scope

Selenium 4 shipped on 2021-10-13. Everything from that date onward in
selenium-tlc/ is the target: post-4 architecture, BiDi, Selenium Manager, the
Grid rework, and the decisions still shaping the project today. Earlier material
and the #selenium channel can follow once the approach is proven.

Day files	1,543
Messages	59,079
Conversation segments	4,271 (median 6 messages)
Messages already inside Slack threads	41%

Why it looks feasible

Segmentation is mostly free. build_slack.py renders thread replies indented
four spaces, so for 41% of messages the conversation boundaries are exact rather
than heuristic. A silence gap handles the remainder. The unit of tagging should be
the conversation, not the day file — a day holds several unrelated threads, and a
day-level tag points at a date rather than a discussion.

Small exchanges carry the weight. 53% of segments involve exactly two people,
and another 14% are one person writing at length. Any filter requiring several
participants would discard most of the corpus, including its clearest
explanations — one maintainer explaining something properly to one other person is
frequently the best statement of a rationale that exists anywhere.

Approach

Three passes over segments, escalating in capability as the set narrows:

1. Triage. Score every segment for whether it contains a claim, rationale,
   decision or disagreement, and propose free-form topic labels. Those proposals
   get curated once into a fixed vocabulary — a closed set matters, because
   independent per-segment labelling otherwise yields w3c-compliance, W3C spec
   and webdriver-spec as three separate tags and the index stops being usable.
2. Review. Over survivors only. Confirm or reject the triage call, assign
   topics from the curated vocabulary, and record what was concluded together with
   a verbatim supporting quote so every claim stays checkable against the log.
3. Synthesis. Per topic, across the full range: what was decided and when,
   what reversed, and what was argued without ever resolving. Where a topic never
   reached a decision, saying so plainly is the finding — this is the pass most
   likely to manufacture a decisions list that isn't there.

Two implementation constraints worth recording up front:

• Tags cannot live in the log files. build_slack.py opens each day file with
  "w", so anything written inline is destroyed the next time an export is
  processed. Sidecar files only.
• Address segments by the timestamp of their first message, not by line numbers,
  which shift whenever a day is regenerated from a corrected export.

A useful signal that falls out for free: a segment linking a GitHub issue or PR is
evidence the reasoning already got written down somewhere, which makes it a
reasonable thing to rank below the conversations that never did.

What should and shouldn't be published here

This repository is a record of what was said. Interpretation of that record is a
different kind of artifact, and the line between them is worth drawing
deliberately.

A topic index — which segments touch the Grid, with dates and permalinks — is a
factual pointer. It makes no claim about anyone, it's checkable at a glance, and
it belongs alongside the logs.

A conclusion — "X rejected Y because Z" — is a model-written characterisation of a
named contributor's position, and it will sometimes be subtly wrong. That's the
kind of sentence that gets quoted back at someone years later. Conclusions and
synthesis output should stay out of this repository, or at minimum sit behind
human review somewhere with its own editorial context. Requiring a supporting
quote alongside every conclusion is what makes that review tractable.

The intermediate working files — scores, draft conclusions, proposed topics — are
build artifacts and shouldn't be committed at all.

The main entry point mentioned is build_slack.py; read how it renders day files and regenerates them before designing sidecar data keyed by first-message timestamps. Validate the proposed segmentation and review/synthesis passes against the post-2021-10-13 selenium-tlc/ corpus. Done is not yet a concrete implementation target: the issue still needs a decision on the index/output and human-review boundary.