fix(ci): use workflow-scoped concurrency groups for PR pipelines (#37)

Replace hardcoded concurrency group prefixes with ${{ github.workflow }}
to auto-namespace by workflow name, preventing accidental group sharing
if workflows are copied. Also remove unnecessary `edited` event type
from windows-smoke-test since it doesn't validate PR titles.

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: rhuanbarreto

.github/workflows/code-pull-request.yml

@@ -7,7 +7,7 @@ on:
       - main
 
 concurrency:
-  group: code-pr-${{ github.event.pull_request.number }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 jobs:

.github/workflows/update-lock.yaml

@@ -7,7 +7,7 @@ on:
       - "package.json"
       - ".github/workflows/update-lock.yaml"
 concurrency:
-  group: pr-lock-${{ github.event.pull_request.number }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 jobs:
   update-lock:

.github/workflows/windows-smoke-test.yml

@@ -2,12 +2,12 @@ name: Windows Smoke Test
 
 on:
   pull_request:
-    types: [opened, edited, synchronize, reopened]
+    types: [opened, synchronize, reopened]
     branches:
       - main
 
 concurrency:
-  group: windows-smoke-${{ github.event.pull_request.number }}
+  group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.ref }}
   cancel-in-progress: true
 
 jobs: