feat: write a job summary from the deploy report

[kristof-siket]

Why

Today the URLs and results of a successful deploy are only in the job log, which runs to about 1,260 lines for a production deploy of the Console. You have to scroll or search to find which services deployed and where they live.

What changed

• New summary.mjs renders a job summary from the run report the Prisma CLI writes to PRISMA_COMPOSER_REPORT_FILE. main.mjs calls it once, from finish(), which every exit path already calls. The code that runs the deploy is unchanged.
• The summary shows:
  • a heading with the outcome: deployed (with the app and the stage or production), failed, or skipped for lack of a credential;
  • the short commit SHA, the ref, and the build id;
  • a table of services and their URLs, and the databases by id;
  • warnings for optional inputs a service left unset (details.absent);
  • on failure, the cause from the report, or the action's own error text when there is no report;
  • a collapsed "For tools and agents" section with the report path.
• The action sets PRISMA_COMPOSER_REPORT_FILE to $RUNNER_TEMP/prisma-deploy-report.json when the workflow has not set it. A value the workflow sets is kept.
• New step output report-path, declared in action.yml. It is set only when the deploy wrote a report during this run. A report file older than the run is ignored.
• Without a report, the summary still shows the outcome, the commit, and any service URLs from the CLI's structured result line.
• A summary error is caught and logged as a warning. It never changes the outcome or the exit code.
• The old one-table summary in main.mjs is removed, since the new summary covers it.
• The unknown-mode check now runs just after the stage is derived, so finish() can always read the stage.
• README: new "Job summary" section and the report-path output.

Phase times will be added once Composer emits step events. The summary code marks where they go.

Example

A summary for a run shaped like a real production deploy (ids and URLs replaced):

### ✅ Deployed `pdp-control-plane-console` to production

Commit `095b237` on `main` · build `bld_igci22j8zecxd2t364y9wb5j`

#### Services

| Service | URL |
| --- | --- |
| `agentEvents.service` | https://events.ewr.prisma.build |
| `bloom.service` | https://bloom.ewr.prisma.build |
| `console` | https://console.ewr.prisma.build |
| `mcp` | https://mcp.ewr.prisma.build |
| `githubWebhook` | https://webhook.ewr.prisma.build |

Databases: `agentEvents.subscriptions` (`db_subs`), `bloom.database` (`db_bloom`).

#### ⚠️ Warnings (2)

- `mcp`: optional input `MCP_PUBLIC_URL` is not set.
- `githubWebhook`: optional inputs `AXIOM_OTEL_LOGS_DATASET`, `FOUNDRY_BASE_URL` are not set.

<details><summary>For tools and agents</summary>

- Report: `/home/runner/work/_temp/prisma-deploy-report.json` (step output `report-path`, run report version 1)

</details>

A failed deploy:

### ❌ Deploy failed

Commit `095b237` on `main` · build `bld_igci22j8zecxd2t364y9wb5j`

#### Cause

```text
DEPLOY.PREFLIGHT_FAILED: 1 required setting has no value: TOLT_PUBLIC_API_KEY.
```

Tests

New tests/summary.test.mjs asserts the full markdown for:

• a successful production deploy shaped like the real run report (five services, two databases, unset optional inputs);
• a preview stage, a successful destroy, and a skipped run;
• a failure with a report, and a failure without one;
• a success without a report, using the URLs from the deploy output;
• readRunReport with a missing file, invalid JSON, and a file older than the run;
• main.mjs run end to end with an unknown mode: it writes the summary, and when the summary path cannot be written it logs a warning and still exits 1 with outcome=failed.

Local results: node --test tests/*.test.mjs passes 66 of 66, node --check passes for every script, and the action.yml sanity check from CI passes. The repo has no lint or build step and no committed dist/. The branch also merges cleanly with #18, and the merged tree passes 72 of 72 tests.

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• summary.mjs
• tests/summary.test.mjs

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---

Summary by CodeRabbit

• New Features

  • Added a job summary with run outcomes, deployment details, and relevant context. When no report is available, the summary uses deployment URLs where applicable.
  • Added a report-path output that provides the JSON run report location when available.
  • Documented job summary contents, report configuration, and fallback behavior.
  • Deployment URLs are included in the job summary instead of a separate table.

• Bug Fixes

  • Summary-writing errors now generate a warning without causing the action to fail.

Walkthrough

The action now reads a run report and renders a job summary with run context, deployment details, optional-input warnings, and failure information. It adds a report-path output and documents the report path and summary behavior. Tests cover report parsing, summary content, unknown modes, and summary-write failures.

Priority: ⬇️ Low

Merge Risk: ⚪ Minimal · up to aa481

No concrete issue remains that should prevent merging after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly summarizes the main change: generating a job summary from the deploy report.
Description check	✅ Passed	The description explains the job summary, report handling, output, fallback behavior, and tests. It is directly related to the changeset.
Docstring Coverage	✅ Passed	Docstring coverage is 87.50% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 8 functions across 3 files.
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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Actionable comments posted: 1

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🤖 Prompt to fix review comments

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Inline comments:
Review comments at @summary.mjs:
- Line 13: Update readRunReport to validate the parsed JSON has the report shape
expected by renderJobSummary before returning it; reject unsupported shapes such
as an object with a non-array nodes property so the action can use its
report-free summary.

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📒 Files selected for processing (5)

• README.md
• action.yml
• main.mjs
• summary.mjs
• tests/summary.test.mjs

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