docs(test-insights): Document mergify tests show and tests APIs

src/content/docs/cli.mdx

@@ -67,3 +67,4 @@ mergify --token your_token_here <command>
 | `mergify queue` | Monitor and control merge queue | [Monitoring](/merge-queue/monitoring) |
 | `mergify config` | Validate and simulate config | [Config](/configuration/file-format#validating-with-the-cli) |
 | `mergify ci` | Upload and analyze CI results | [CI Insights](/ci-insights) |
+| `mergify tests show` | Search test health by name | [Test Insights CLI](/test-insights/cli) |

src/content/docs/test-insights.mdx

@@ -29,6 +29,11 @@ of a test reliability problem:
    to unblock CI without removing them. Tests keep running, but their failures
    no longer block merges.
 
+You can also search test health directly from the terminal or from AI coding
+agents with the [Test Insights CLI](/test-insights/cli). This is useful when
+an agent needs to decide whether a failing test is a real regression or
+known flakiness.
+
 ## Key concepts
 
 - **Flaky test**: A test that produces different results on the same commit.

src/content/docs/test-insights/cli.mdx

@@ -0,0 +1,83 @@
+---
+title: CLI
+description: Interact with Test Insights data from the terminal — search for tests, branch on health via exit codes, and chain into AI coding agents like Claude Code and Cursor.
+---
+
+The [Mergify CLI](/cli) lets you interact with Test Insights data from
+the terminal. It's handy when you want to triage a failing test
+quickly, or when an AI coding agent needs to decide whether to retry,
+fix, or ignore a failure.
+
+## `mergify tests show`
+
+Search the Test Insights catalog by test name and print health, ratios,
+and the most recent failure context for each match.
+
+```bash
+mergify tests show -r owner/repo "tests/auth/test_login.py::test_login_timeout"
+```
+
+Names accept glob patterns (`*`, `?`), and several can be passed in one
+call. Add `--json` for a machine-readable payload. Run
+`mergify tests show --help` for the full list of flags, and see the
+[API reference](/api/test-insights) for the underlying endpoints and
+response schemas.
+
+### Exit codes
+
+The exit code reflects the worst health observed across the matched
+tests, so callers can branch without parsing output:
+
+| Code | Meaning |
+|---|---|
+| `0` | All matched tests are healthy or unknown, or nothing matched. |
+| `1` | At least one matched test is flaky. |
+| `6` | At least one matched test is broken. |
+
+Exit code `2` is reserved for CLI argument errors.
+
+## AI coding agent recipes
+
+The exit-code contract is designed to be chained from agents that ran
+a test, saw it fail, and need to decide what to do next.
+
+### Should the agent retry, fix, or ignore?
+
+```bash
+if mergify tests show -r owner/repo "$FAILED_TEST" --json > /tmp/health.json; then
+  status=0
+else
+  status=$?
+fi
+
+case $status in
+  0) echo "Healthy or unknown: investigate as a real regression." ;;
+  1) echo "Known flaky: retry before touching code." ;;
+  6) echo "Broken: fix is required; skip the retry loop." ;;
+esac
+```
+
+### Claude Code
+
+Add a [skill](https://docs.claude.com/en/docs/claude-code/skills) or a
+prompt snippet that points the agent at the CLI:
+
+```md
+When a test fails locally or in CI, before attempting a fix, run:
+
+  mergify tests show -r OWNER/REPO --json "<failed-test-name>"
+
+Then branch on the exit code:
+- 0, non-empty payload → healthy in Mergify; investigate as a real
+  regression.
+- 0, empty payload → unknown to Mergify; treat as a new test or one on
+  a non-default branch.
+- 1 → known flaky. Rerun once; only investigate if it fails again.
+- 6 → known broken (pre-existing). Surface to the user instead of
+  attempting a fix.
+```
+
+### Cursor
+
+In Cursor, add the same guidance to a project rule
+(`.cursor/rules/test-triage.mdc`) so it auto-loads in agent sessions.

src/content/navItems.tsx

@@ -123,6 +123,7 @@ const navItems: NavItem[] = [
       { title: 'Detection', path: '/test-insights/detection', icon: 'lucide:search' },
       { title: 'Mitigation', path: '/test-insights/mitigation', icon: 'lucide:radiation' },
       { title: 'Quarantine', path: '/test-insights/quarantine', icon: 'lucide:radiation' },
+      { title: 'CLI', path: '/test-insights/cli', icon: 'lucide:terminal' },
       {
         title: 'Test Frameworks Setup',
         path: '/test-insights#test-framework-configuration',