Migrate to the shared automation-template.yml entry point

[akolson]

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Overview

This repo copies seven caller workflows from learningequality/.github, one per automation.
learningequality/.github#88 replaces all of them with one file. Swap the seven callers for that one file.

Complexity: Low
Target branch: main

Context

Each call-*.yml file in .github/workflows/ carries its own on: block and its own exhaustive
types: list. Adding, removing or toggling an automation therefore means a change in every consumer
repo. The hand-maintained types: lists also drift, because a default pull_request_target trigger
fires only on opened, synchronize and reopened, and silently misses labeled,
review_requested and assigned.

learningequality/.github#88 moves all routing into a central reusable automation.yml. Consumers
copy one template, whose on: block is generated as the union of every enabled automation.

These are the caller workflows in this repo today:

• call-pull-request-target.yml
• call-contributor-issue-comment.yml
• call-contributor-pr-reply.yml
• call-manage-issue-header.yml
• call-update-pr-spreadsheet.yml
• community-contribution-labeling.yml
• unassign-inactive.yaml

Together they run 11 of the 13 automations in the registry.

The Change

Replace those caller workflows with one copy of automation-template.yml from
learningequality/.github, saved as .github/workflows/automation.yml. Do not edit the copy.

This repo gains two automations it does not run today:

• good-first-issue-comment posts contributor guidance when an issue is labeled good first issue
  or help wanted.
• resolve-bot-pr-threads resolves a review thread when the bot marks its comment as addressed.

Nothing else changes. No leaf workflow's internal logic is different.

Out of Scope

• Changing what any automation does. This is a routing change only.
• Editing the copied template. Its on: block is generated, and a local edit will drift from
  learningequality/.github.

Acceptance Criteria

• .github/workflows/automation.yml is an unedited copy of automation-template.yml from
  learningequality/.github@main.
• Every caller workflow listed above is deleted.
• LE_BOT_APP_ID and LE_BOT_PRIVATE_KEY resolve in a workflow run in this repo.
• After merge, each of these fires the automation it fired before: opening a pull request,
  labeling a pull request, requesting a review, opening an issue, labeling an issue
  help wanted, assigning an issue, and commenting on an issue.
• The weekly unassign-inactive-issues run still fires on Mondays at 00:01 UTC.

Testing

1. Open a draft pull request. Confirm that the contributor reply and the spreadsheet update run.
2. Add and remove the help wanted label on a test issue. Confirm that the header updates both times.
3. Assign and unassign a test issue. Confirm that the community contribution label follows.
4. Comment on a test issue as a contributor account. Confirm that the Slack notification is sent.
5. Run the Automation workflow manually from the Actions tab. Confirm that only
   unassign-inactive-issues runs.

References

• [DO NOT MERGE] Consolidate shared workflows into a single generated automation.yml entry point .github#88 adds the template and the central automation.yml.
• Consolidate shared workflows into a single generated automation.yml entry point .github#86 is the tracking issue for the consolidation.
• docs/automation.md in learningequality/.github describes the entry point and the secrets.

AI usage

I used Claude Code to inspect the caller workflows in this repo and to draft this issue. I verified
the file list and the automation counts against the repo myself, and I edited the wording.