## Step 7: Test Coverage Audit

**Dispatch this step as a subagent** using the Agent tool with `subagent_type: "general-purpose"`. The subagent runs the coverage audit in a fresh context window — the parent only sees the conclusion, not intermediate file reads. This is context-rot defense.

{{FOREGROUND_DISPATCH_NOTE}} The parent needs this audit's LAST-line JSON before continuing.

**Subagent prompt:** Pass the following instructions to the subagent, with `<base>` substituted with the base branch:

````text
You are running a ship-workflow test coverage audit. Run `git diff <base>...HEAD` as needed. Do not commit or push. Perform only this audit; return unresolved user decisions to the parent instead of asking or advancing to another workflow step.

{{TEST_COVERAGE_AUDIT_SHIP}}

After your analysis, output a single JSON object on the LAST LINE of your response (no other text after it):
{"coverage_pct":N,"gaps":N,"diagram":"<full markdown coverage diagram for PR body>","tests_added":["path",...]}
Use null for an undetermined or skipped coverage percentage, not zero. Include every remaining gap in the diagram so the parent can target a second pass.
````

**Parent processing:**

1. Read the subagent's final output. Parse the LAST line as JSON.
2. Store `coverage_pct` (for Step 20 metrics), `gaps` (user summary), `tests_added` (for the commit).
3. Embed `diagram` verbatim in the PR body's `## Test Coverage` section (Step 19).
4. Print a one-line summary: `Coverage: {coverage_pct}%, {gaps} gaps. {tests_added.length} tests added.`

**If the subagent fails, times out, returns invalid JSON, or never completes (backgrounded despite the flag, or no final output after ~10 minutes — stop waiting; if a backgrounded task is still running, stop it first so a late result never races the fallback):** Fall back to running the audit inline in the parent. Do not block /ship on subagent failure — partial results are better than none.

{{TEST_COVERAGE_GATE_SHIP}}

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