fix: render peer dependency issues on strict error (#11450)

Fixes #11439.

When `strictPeerDependencies: true` causes `ERR_PNPM_PEER_DEP_ISSUES`, the peer dependency issues are again rendered inline — using the **same format as `pnpm peers check`** — so users (and CI tools like Renovate) can see what failed without running another command.

The non-strict warning path is unchanged: it still emits the short "Run `pnpm peers check`" hint.

### Behavior

`strictPeerDependencies: true`:
```
 ERR_PNPM_PEER_DEP_ISSUES  Unmet peer dependencies

✕ unmet peer react
  Installed: 17.0.2
  Wanted:
    ^18.2.0:
      react-dom@18.2.0
hint: To disable failing on peer dependency issues, add the following to pnpm-workspace.yaml in your project root:

  strictPeerDependencies: false
```

`strictPeerDependencies: false` (unchanged):
```
 WARN  Issues with peer dependencies found. Run "pnpm peers check" to list them.
```

### Implementation

- Added a new `@pnpm/deps.inspection.peers-issues-renderer` package at `deps/inspection/peers-issues-renderer/`, alongside its data producer `@pnpm/deps.inspection.peers-checker`. It exposes a single `renderPeerIssues()` that emits the flat issue list previously inlined in `pnpm peers check`.
- Removed the duplicated formatter from `deps/inspection/commands/src/peers.ts` and made the `pnpm peers check` command consume the new renderer.
- `cli/default-reporter/src/reportError.ts`: `reportPeerDependencyIssuesError` now calls the shared `renderPeerIssues()` and prefixes the hint block with the rendered output. Tests strip ANSI escapes before substring assertions so they stay correct under `FORCE_COLOR=1`.

Result: a single renderer is shared between the install error and the `pnpm peers check` command — output is identical between the two paths.

cli/default-reporter/package.json

@@ -36,6 +36,7 @@
     "@pnpm/cli.meta": "workspace:*",
     "@pnpm/config.reader": "workspace:*",
     "@pnpm/core-loggers": "workspace:*",
+    "@pnpm/deps.inspection.peers-issues-renderer": "workspace:*",
     "@pnpm/error": "workspace:*",
     "@pnpm/installing.dedupe.issues-renderer": "workspace:*",
     "@pnpm/installing.dedupe.types": "workspace:*",

cli/default-reporter/src/reportError.ts

@@ -1,5 +1,6 @@
 import type { Config } from '@pnpm/config.reader'
 import type { Log } from '@pnpm/core-loggers'
+import { renderPeerIssues } from '@pnpm/deps.inspection.peers-issues-renderer'
 import type { PnpmError } from '@pnpm/error'
 import { renderDedupeCheckIssues } from '@pnpm/installing.dedupe.issues-renderer'
 import type { DedupeCheckIssues } from '@pnpm/installing.dedupe.types'
@@ -461,9 +462,7 @@ function reportPeerDependencyIssuesError (
   msg: { issuesByProjects: PeerDependencyIssuesByProjects }
 ): ErrorInfo {
   const hasMissingPeers = getHasMissingPeers(msg.issuesByProjects)
-  const hints: string[] = [
-    'Run "pnpm peers check" to list the peer dependency issues.',
-  ]
+  const hints: string[] = []
   if (hasMissingPeers) {
     hints.push(`To auto-install peer dependencies, add the following to "pnpm-workspace.yaml" in your project root:
 
@@ -471,11 +470,12 @@ function reportPeerDependencyIssuesError (
   }
   hints.push(`To disable failing on peer dependency issues, add the following to pnpm-workspace.yaml in your project root:
 
-  strictPeerDependencies: false
-`)
+  strictPeerDependencies: false`)
+  const formattedHints = hints.map((hint) => `hint: ${hint}`).join('\n')
+  const rendered = renderPeerIssues(msg.issuesByProjects)
   return {
     title: err.message,
-    body: hints.map((hint) => `hint: ${hint}`).join('\n'),
+    body: rendered ? `${rendered}\n${formattedHints}` : formattedHints,
   }
 }
 

cli/default-reporter/test/reportingPeerDependencyIssues.ts

@@ -1,3 +1,5 @@
+import { stripVTControlCharacters as stripAnsi } from 'node:util'
+
 import { expect, test } from '@jest/globals'
 import { toOutput$ } from '@pnpm/cli.default-reporter'
 import { peerDependencyIssuesLogger } from '@pnpm/core-loggers'
@@ -44,7 +46,7 @@ test('print peer dependency issues warning', async () => {
   expect.assertions(1)
 
   const output = await firstValueFrom(output$)
-  expect(output).toContain('pnpm peers check')
+  expect(stripAnsi(output)).toContain('pnpm peers check')
 })
 
 test('print peer dependency issues error', async () => {
@@ -81,8 +83,10 @@ test('print peer dependency issues error', async () => {
   })
   logger.error(err, err)
 
-  expect.assertions(1)
+  expect.assertions(3)
 
-  const output = await firstValueFrom(output$)
-  expect(output).toContain('pnpm peers check')
+  const output = stripAnsi(await firstValueFrom(output$))
+  expect(output).toContain('unmet peer a')
+  expect(output).toContain('Installed: 2')
+  expect(output).toContain('b@1.0.0')
 })

cli/default-reporter/tsconfig.json

@@ -25,6 +25,9 @@
     {
       "path": "../../core/types"
     },
+    {
+      "path": "../../deps/inspection/peers-issues-renderer"
+    },
     {
       "path": "../../installing/dedupe/issues-renderer"
     },