ci: improve GitHub Actions workflows with job separation and caching

- Split CI workflow into separate jobs (compile, format, credo, dialyzer)
- Add format check job to verify code formatting
- Improve caching strategy for dependencies and Dialyzer PLT
- Add MailHog service to test workflow for email testing
- Update test workflow to run on develop branch pushes
- Add bun setup to test workflow
- Simplify dependency installation in test workflow

Author: GSMLG-BOT

.github/workflows/ci.yml

@@ -5,8 +5,8 @@ on:
     branches: [ '*' ]
 
 jobs:
-  test:
-    name: Build and test
+  compile:
+    name: Compile
     runs-on: ubuntu-latest
 
     steps:
@@ -31,19 +31,99 @@ jobs:
       - name: Install dependencies
         run: mix deps.get
 
-      - name: Compile
+      - name: Compile with warnings as errors
         run: mix compile --warnings-as-errors
 
-      - name: Run Credo
+  format:
+    name: Format Check
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: '1.18'
+          otp-version: '28'
+
+      - name: Restore dependencies cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            deps
+            _build
+          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-mix-
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: Check code formatting
+        run: mix format --check-formatted
+
+  credo:
+    name: Credo
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: '1.18'
+          otp-version: '28'
+
+      - name: Restore dependencies cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            deps
+            _build
+          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-mix-
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: Run Credo strict
         run: mix credo --strict
 
-      - name: Build Dialyzer PLT (cached)
-        id: plt
+  dialyzer:
+    name: Dialyzer
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Set up Elixir
+        uses: erlef/setup-beam@v1
+        with:
+          elixir-version: '1.18'
+          otp-version: '28'
+
+      - name: Restore dependencies cache
+        uses: actions/cache@v4
+        with:
+          path: |
+            deps
+            _build
+          key: ${{ runner.os }}-mix-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-mix-
+
+      - name: Install dependencies
+        run: mix deps.get
+
+      - name: Restore Dialyzer PLT cache
         uses: actions/cache@v4
         with:
           path: priv/plts
-          key: dialyzer-${{ hashFiles('mix.lock') }}
+          key: ${{ runner.os }}-dialyzer-${{ hashFiles('**/mix.lock') }}
+          restore-keys: ${{ runner.os }}-dialyzer-
 
       - name: Run Dialyzer
         run: mix dialyzer --halt-exit-status
-

.github/workflows/test.yml

@@ -2,14 +2,22 @@ name: Test
 
 on:
   push:
-    branches: [ main ]
-  pull_request:
     branches: [ main, develop ]
+  pull_request:
+    branches: [ main ]
 
 jobs:
   test:
+    name: Test
     runs-on: ubuntu-latest
 
+    services:
+      mailhog:
+        image: mailhog/mailhog:latest
+        ports:
+          - 1025:1025
+          - 8025:8025
+
     steps:
       - name: Checkout code
         uses: actions/checkout@v5
@@ -20,7 +28,11 @@ jobs:
           elixir-version: '1.18'
           otp-version: '28'
 
-      - name: Cache dependencies
+      - uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+
+      - name: Restore dependencies cache
         uses: actions/cache@v4
         with:
           path: |
@@ -31,10 +43,7 @@ jobs:
             ${{ runner.os }}-mix-
 
       - name: Install dependencies
-        run: |
-          mix local.hex --force
-          mix local.rebar --force
-          mix deps.get
+        run: mix deps.get
 
       - name: Run tests
         run: mix test