update docs and metadata for package:sdk_triage_bot (#266)

* update docs and metadata for package:sdk_triage_bot

* Update README.md

.github/ISSUE_TEMPLATE/sdk_triage_bot.md

@@ -0,0 +1,5 @@
+---
+name: "package:sdk_triage_bot"
+about: "Create a bug or file a feature request against package:sdk_triage_bot."
+labels: "package:sdk_triage_bot"
+---

.github/labeler.yml

@@ -23,3 +23,7 @@
 'package:repo_manage':
   - changed-files:
       - any-glob-to-any-file: 'pkgs/repo_manage/**/*'
+
+'package:sdk_triage_bot':
+  - changed-files:
+      - any-glob-to-any-file: 'pkgs/sdk_triage_bot/**/*'

README.md

@@ -13,6 +13,7 @@ This repository is home to general Dart Ecosystem tools and packages.
 | [dart_flutter_team_lints](pkgs/dart_flutter_team_lints/) | An analysis rule set used by the Dart and Flutter teams. | [![pub package](https://img.shields.io/pub/v/dart_flutter_team_lints.svg)](https://pub.dev/packages/dart_flutter_team_lints) |
 | [firehose](pkgs/firehose/) | A tool to automate publishing of Pub packages from GitHub actions. | [![pub package](https://img.shields.io/pub/v/firehose.svg)](https://pub.dev/packages/firehose) |
 | [repo_manage](pkgs/repo_manage/) | Miscellaneous issue, repo, and PR query tools. |  |
+| [sdk_triage_bot](pkgs/sdk_triage_bot/) | A triage automation tool for dart-lang/sdk issues. |  |
 
 ## Publishing automation
 

pkgs/sdk_triage_bot/README.md

@@ -9,12 +9,29 @@ human would. This includes:
 
 ## Bot trigger and entry-point
 
-TODO: doc
+This bot is generally triggered by a GitHub workflow listening for new issues
+on the dart-lang/sdk repo.
+
+See https://github.com/dart-lang/sdk/blob/main/.github/workflows/issue-triage.yml.
 
 ## Overview
 
-TODO: doc
+The general workflow of the tool is:
+
+- download the issue information (existing labels, title, first comment)
+- ask Gemini to summarize the issue (see [prompts](lib/src/prompts.dart))
+- ask Gemini to classify the issue (see [prompts](lib/src/prompts.dart))
+- create a comment on the issue (`@dart-github-bot`) with the summary;
+  apply any labels produced as part of the classification
 
 ## Tuning
 
-TODO: doc
+We create a tuned Gemini model in order to improve the performance of
+classification. This involves:
+
+- downloading recent, already triaged issues (~800 issues)
+- writing them in a format suitable for tuning (either .csv or .jsonl)
+- tuning via the Gemini APIs; this gives us a new model name to use when
+  calling Gemini (e.g., `model: 'tunedModels/sdk-triage-tuned-prompt-1l96e2n'`)
+
+See [tool/create_tuning_data.dart](tool/create_tuning_data.dart).