fix(cli): accept evlog 2.31 as a peer so the CLI installs on 2.x projects

.changeset/cli-peer-evlog-2.md

@@ -0,0 +1,5 @@
+---
+"@evlog/cli": patch
+---
+
+`@evlog/cli` now installs next to evlog 2.31 and later as well as 3.0 betas. Before, `npm i -D @evlog/cli@beta` in a project still on evlog 2.x failed with `ERESOLVE`, because the peer range only allowed 3.0 betas. The minimum is 2.31.0, the first 2.x release the CLI has been built against.

.github/workflows/ci.yml

@@ -142,6 +142,32 @@ jobs:
             echo "CLI untouched — smoke skipped"
           fi
 
+      # A project already on evlog 2.x has to be able to add the CLI next to
+      # it. npm resolves peers strictly here (no --legacy-peer-deps), so a peer
+      # range that rejects 2.x fails the install with ERESOLVE. Checks the
+      # lowest 2.x the CLI supports and the 2.33 line it is released against.
+      - name: CLI installs next to evlog 2.x
+        if: github.event_name == 'pull_request'
+        run: |
+          if git diff --name-only "origin/${{ github.base_ref }}"...HEAD -- packages/cli | grep -q .; then
+            pnpm exec turbo run dev:prepare --filter=@evlog/cli
+            pack_dir=$(mktemp -d)
+            (cd packages/cli && pnpm pack --pack-destination "$pack_dir" >/dev/null)
+            tarball=$(ls "$pack_dir"/*.tgz)
+            for evlog in 2.31.0 2.33.1; do
+              app=$(mktemp -d)
+              (
+                cd "$app"
+                npm init -y >/dev/null
+                npm install "evlog@$evlog"
+                npm install --save-dev "$tarball"
+                ./node_modules/.bin/evlog doctor --json >/dev/null
+              )
+            done
+          else
+            echo "CLI untouched, install check skipped"
+          fi
+
   examples:
     name: Build examples
     runs-on: ubuntu-latest

packages/cli/package.json

@@ -61,7 +61,7 @@
     "oxc-parser": "^0.152.0"
   },
   "peerDependencies": {
-    "evlog": ">=3.0.0-beta.0"
+    "evlog": "^2.31.0 || >=3.0.0-beta.0"
   },
   "devDependencies": {
     "evlog": "workspace:*",