diff --git a/.github/PULL_REQUEST_TEMPLATE.md b/.github/PULL_REQUEST_TEMPLATE.md
index 7a2c836..e9cc769 100644
--- a/.github/PULL_REQUEST_TEMPLATE.md
+++ b/.github/PULL_REQUEST_TEMPLATE.md
@@ -12,5 +12,5 @@ Closes #...
 
 - [ ] Tests added or updated.
 - [ ] Documentation updated when applicable.
-- [ ] `composer review` passes.
-- [ ] `composer tests` passes.
+- [ ] `make review` passes.
+- [ ] `make tests` passes.
diff --git a/.github/copilot-instructions.md b/.github/copilot-instructions.md
index de1576d..e34c801 100644
--- a/.github/copilot-instructions.md
+++ b/.github/copilot-instructions.md
@@ -6,7 +6,7 @@ PHP library in the tiny-blocks ecosystem.
 
 ## Mandatory pre-task step
 
-Before starting any task, read and strictly follow `CLAUDE.md` and every rule file in
+Before starting any task, read and strictly follow `.claude/CLAUDE.md` and every rule file in
 `.claude/rules/`. These files are the absolute source of truth for code generation. Apply every
 rule strictly. Do not deviate from the patterns, folder structure, or naming conventions defined
 in them.
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index b401ca6..1b5f8ac 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -11,42 +11,39 @@ permissions:
   contents: read
 
 jobs:
-  resolve-php-version:
-    name: Resolve PHP version
+  resolve-tooling-image:
+    name: Resolve tooling image
     runs-on: ubuntu-latest
     timeout-minutes: 5
     outputs:
-      php-version: ${{ steps.config.outputs.php-version }}
+      php-image: ${{ steps.config.outputs.php-image }}
     steps:
       - name: Checkout
         uses: actions/checkout@v7
 
-      - name: Resolve PHP version from composer.json
+      - name: Resolve tooling image from the Makefile
         id: config
-        run: |
-          version=$(jq -r '.require.php' composer.json | grep -oP '\d+\.\d+' | head -1)
-          echo "php-version=$version" >> "$GITHUB_OUTPUT"
+        run: echo "php-image=$(make show-image)" >> "$GITHUB_OUTPUT"
 
   build:
     name: Build
-    needs: resolve-php-version
+    needs: resolve-tooling-image
     runs-on: ubuntu-latest
     timeout-minutes: 15
+    env:
+      image: ${{ needs.resolve-tooling-image.outputs.php-image }}
+      workspace: /var/www/html
     steps:
       - name: Checkout
         uses: actions/checkout@v7
 
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          tools: composer:2
-          php-version: ${{ needs.resolve-php-version.outputs.php-version }}
-
       - name: Validate composer.json
-        run: composer validate --no-interaction
+        run: docker run --rm -v "${PWD}":${{ env.workspace }} ${{ env.image }} composer validate --no-interaction
 
       - name: Install dependencies
-        run: composer install --no-progress --optimize-autoloader --prefer-dist --no-interaction
+        run: >
+          docker run --rm -v "${PWD}":${{ env.workspace }} ${{ env.image }}
+          composer install --no-progress --optimize-autoloader --prefer-dist --no-interaction
 
       - name: Upload vendor and composer.lock as artifact
         uses: actions/upload-artifact@v7
@@ -58,19 +55,13 @@ jobs:
 
   auto-review:
     name: Auto review
-    needs: [resolve-php-version, build]
+    needs: [resolve-tooling-image, build]
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
       - name: Checkout
         uses: actions/checkout@v7
 
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          tools: composer:2
-          php-version: ${{ needs.resolve-php-version.outputs.php-version }}
-
       - name: Download vendor artifact from build
         uses: actions/download-artifact@v8
         with:
@@ -78,23 +69,17 @@ jobs:
           path: .
 
       - name: Run review
-        run: composer review
+        run: make review
 
   tests:
     name: Tests
-    needs: [resolve-php-version, auto-review]
+    needs: [resolve-tooling-image, auto-review]
     runs-on: ubuntu-latest
     timeout-minutes: 15
     steps:
       - name: Checkout
         uses: actions/checkout@v7
 
-      - name: Setup PHP
-        uses: shivammathur/setup-php@v2
-        with:
-          tools: composer:2
-          php-version: ${{ needs.resolve-php-version.outputs.php-version }}
-
       - name: Download vendor artifact from build
         uses: actions/download-artifact@v8
         with:
@@ -102,4 +87,4 @@ jobs:
           path: .
 
       - name: Run tests
-        run: composer tests
+        run: make tests
diff --git a/Makefile b/Makefile
index 90ab50d..6915324 100644
--- a/Makefile
+++ b/Makefile
@@ -8,7 +8,12 @@ endif
 
 TTY := $(shell [ -t 0 ] && echo -it)
 
-DOCKER_RUN = docker run ${PLATFORM} --rm ${TTY} --net=host -v ${PWD}:/app -w /app gustavofreze/php:8.5-alpine
+PHP_VERSION := $(shell sed -n 's/.*"php": *"^\([0-9]*\.[0-9]*\)".*/\1/p' composer.json)
+IMAGE_VERSION := 1.0.0
+PHP_IMAGE := gustavofreze/php:${PHP_VERSION}-cli-${IMAGE_VERSION}
+WORKSPACE := /var/www/html
+
+DOCKER_RUN = docker run ${PLATFORM} --rm ${TTY} --net=host -v ${PWD}:${WORKSPACE} ${PHP_IMAGE}
 
 RESET := \033[0m
 GREEN := \033[0;32m
@@ -44,6 +49,10 @@ show-reports: ## Open coverage and mutation reports in the browser
 show-outdated: ## Show outdated direct dependencies
 	@${DOCKER_RUN} composer outdated --direct
 
+.PHONY: show-image
+show-image: ## Show the pinned PHP tooling image
+	@echo ${PHP_IMAGE}
+
 .PHONY: clean
 clean: ## Remove dependencies and generated artifacts
 	@sudo chown -R ${USER}:${USER} ${PWD}
@@ -66,7 +75,7 @@ help: ## Display this help message
 		| awk 'BEGIN {FS = ":.*?## "}; {printf "$(YELLOW)%-25s$(RESET) %s\n", $$1, $$2}'
 	@echo ""
 	@echo "$$(printf '$(GREEN)')Reports$$(printf '$(RESET)')"
-	@grep -E '^(show-reports|show-outdated):.*?## .*$$' $(MAKEFILE_LIST) \
+	@grep -E '^(show-reports|show-outdated|show-image):.*?## .*$$' $(MAKEFILE_LIST) \
 		| awk 'BEGIN {FS = ":.*?## "}; {printf "$(YELLOW)%-25s$(RESET) %s\n", $$1, $$2}'
 	@echo ""
 	@echo "$$(printf '$(GREEN)')Cleanup$$(printf '$(RESET)')"
diff --git a/composer.json b/composer.json
index 383a626..9fc306e 100644
--- a/composer.json
+++ b/composer.json
@@ -59,6 +59,7 @@
             "ergebnis/composer-normalize": true,
             "infection/extension-installer": true
         },
+        "process-timeout": 0,
         "sort-packages": true
     },
     "scripts": {
diff --git a/phpstan.neon.dist b/phpstan.neon.dist
index 9147e2f..792ad87 100644
--- a/phpstan.neon.dist
+++ b/phpstan.neon.dist
@@ -3,31 +3,26 @@ parameters:
     paths:
         - src
         - tests
+    tmpDir: reports/phpstan
     ignoreErrors:
         # Constructor parameter holds the registered entries; PHPDoc is prohibited on constructors.
         - identifier: missingType.iterableValue
           path: src/ExceptionMappingTable.php
-
         # Iteration over the constructor-typed array of entries; root cause is the same as above.
         - identifier: method.nonObject
           path: src/ExceptionMappingTable.php
-
         # The mapTo return type cannot be inferred without the constructor-level array shape.
         - identifier: return.type
           path: src/ExceptionMappingTable.php
-
         # Internal matcher accepts a list of class-strings; PHPDoc is prohibited inside src/Internal/.
         - identifier: missingType.iterableValue
           path: src/Internal/AnyExactClassMatcher.php
-
         # Closure invocation is opaque to PHPStan; PHPDoc is prohibited inside src/Internal/.
         - identifier: return.type
           path: src/Internal/DynamicMappedErrorResolver.php
-
         # json_decode in test assertions yields mixed; PHPDoc is prohibited inside tests/.
         - identifier: offsetAccess.nonOffsetAccessible
           path: tests/Unit/ErrorMiddlewareTest.php
-
         # Same root cause as the offset access entry: assertArrayHasKey/NotHasKey receive mixed from json_decode.
         - identifier: argument.type
           path: tests/Unit/ErrorMiddlewareTest.php