ci: auto-bump package version workflow added

Added CI workflows that check if versions of packages core and javascript should be bumped.

Bump level depends on commit message:
- major - '!' after type or body contains 'BREAKING CHANGES' string
- minor - commit of type 'feat'
- patch - otherwise

Author: Reversean

.github/workflows/bump-package.yml

@@ -0,0 +1,88 @@
+name: Bump package version
+
+on:
+  workflow_call:
+    inputs:
+      workspace:
+        required: true
+        type: string
+        description: 'Yarn workspace name'
+      path:
+        required: true
+        type: string
+        description: 'Package directory relative to repo root'
+
+jobs:
+  bump:
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          repository: ${{ github.event.pull_request.head.repo.full_name }}
+          ref: ${{ github.event.pull_request.head.ref }}
+
+      - name: Check if package was modified and version needs bump
+        id: check
+        run: |
+          # Exit cleanly if the package directory was not touched in this PR
+          if git diff --quiet ${{ github.event.pull_request.base.sha }} HEAD -- ${{ inputs.path }}; then
+            echo "No changes detected in ${{ inputs.path }}."
+            echo "should-bump=false" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+
+          # Compare old (base) and new (HEAD) version strings
+          OLD_VERSION=$(git show ${{ github.event.pull_request.base.sha }}:${{ inputs.path }}/package.json | jq -r '.version')
+          NEW_VERSION=$(jq -r '.version' ${{ inputs.path }}/package.json)
+
+          if [ "$OLD_VERSION" != "$NEW_VERSION" ]; then
+            echo "Version already bumped by developer ($OLD_VERSION → $NEW_VERSION)."
+            echo "should-bump=false" >> $GITHUB_OUTPUT
+            exit 0
+          fi
+
+          echo "should-bump=true" >> $GITHUB_OUTPUT
+
+      - name: Determine bump level from conventional commits
+        id: level
+        if: steps.check.outputs.should-bump == 'true'
+        run: |
+          # Gather full commit messages (subject + body) only for commits touching this package
+          COMMITS=$(git log ${{ github.event.pull_request.base.sha }}..HEAD --format=%B -- ${{ inputs.path }})
+
+          if echo "$COMMITS" | grep -qE '^[a-z]+(\([^)]+\))?!:'; then
+            LEVEL=major
+          elif echo "$COMMITS" | grep -qE 'BREAKING[- ]CHANGE'; then
+            LEVEL=major
+          elif echo "$COMMITS" | grep -qE '^feat(\([^)]*\))?:'; then
+            LEVEL=minor
+          else
+            LEVEL=patch
+          fi
+
+          echo "level=$LEVEL" >> $GITHUB_OUTPUT
+          echo "Bumping ${{ inputs.workspace }} with $LEVEL level"
+
+      - uses: actions/setup-node@v4
+        if: steps.check.outputs.should-bump == 'true'
+        with:
+          node-version-file: '.nvmrc'
+
+      - run: corepack enable
+        if: steps.check.outputs.should-bump == 'true'
+
+      - run: yarn
+        if: steps.check.outputs.should-bump == 'true'
+
+      - name: Bump ${{ inputs.workspace }} version
+        if: steps.check.outputs.should-bump == 'true'
+        run: yarn workspace ${{ inputs.workspace }} version ${{ steps.level.outputs.level }}
+
+      - uses: EndBug/add-and-commit@v9
+        if: steps.check.outputs.should-bump == 'true'
+        with:
+          author_name: github-actions
+          author_email: 41898282+github-actions[bot]@users.noreply.github.com
+          message: 'chore: bump ${{ inputs.workspace }} version'
+          pull: '--rebase --autostash'

.github/workflows/bump-version.yml

@@ -0,0 +1,16 @@
+name: Bump version in PR
+
+on: [pull_request]
+
+jobs:
+  bump-version-core:
+    uses: ./.github/workflows/bump-package.yml
+    with:
+      workspace: '@hawk.so/core'
+      path: packages/core
+
+  bump-version-javascript:
+    uses: ./.github/workflows/bump-package.yml
+    with:
+      workspace: '@hawk.so/javascript'
+      path: packages/javascript