Simplify Python workflow - use paths trigger instead of filter action

Apply suggestion from @nsingla:
- Remove detect-python-changes job
- Use on.push.paths and on.pull_request.paths directly
- Simpler implementation with same functionality
- Reduces workflow complexity and job count

Benefits:
- One less job to execute
- Clearer trigger conditions in workflow file
- GitHub handles path filtering natively
- Added workflow file itself to paths (self-trigger on changes)

Co-authored-by: nsingla <nsingla@users.noreply.github.com>

Author: bobbravo2

.github/workflows/python-test.yml

@@ -3,33 +3,23 @@ name: Python Test and Coverage
 on:
   push:
     branches: [main]
+    paths:
+      - 'components/runners/claude-code-runner/**/*.py'
+      - 'components/runners/claude-code-runner/pyproject.toml'
+      - 'components/runners/claude-code-runner/uv.lock'
+      - '.github/workflows/python-test.yml'
   pull_request:
     branches: [main]
+    paths:
+      - 'components/runners/claude-code-runner/**/*.py'
+      - 'components/runners/claude-code-runner/pyproject.toml'
+      - 'components/runners/claude-code-runner/uv.lock'
+      - '.github/workflows/python-test.yml'
   workflow_dispatch:
 
 jobs:
-  detect-python-changes:
-    runs-on: ubuntu-latest
-    outputs:
-      runner: ${{ steps.filter.outputs.runner }}
-    steps:
-      - name: Checkout code
-        uses: actions/checkout@v5
-
-      - name: Check for Python changes
-        uses: dorny/paths-filter@v3
-        id: filter
-        with:
-          filters: |
-            runner:
-              - 'components/runners/claude-code-runner/**/*.py'
-              - 'components/runners/claude-code-runner/pyproject.toml'
-              - 'components/runners/claude-code-runner/uv.lock'
-
   test-runner:
     runs-on: ubuntu-latest
-    needs: detect-python-changes
-    if: needs.detect-python-changes.outputs.runner == 'true' || github.event_name == 'workflow_dispatch'
     steps:
       - name: Checkout code
         uses: actions/checkout@v5
@@ -75,7 +65,7 @@ jobs:
 
   test-summary:
     runs-on: ubuntu-latest
-    needs: [detect-python-changes, test-runner]
+    needs: [test-runner]
     if: always()
     steps:
       - name: Check overall status