FX: install pnpm and test xdebug/pcov extensions

- Install pnpm globally via npm in the fx image
- Add Makefile test cases for pnpm and the xdebug/pcov PHP
  extensions to the fx test suite

Author: claude

Makefile

@@ -35,7 +35,7 @@ test-all:
 
 .PHONY: test-fx
 test-fx: DOCKER_TAG=fx
-test-fx: _testcase-node _testcase-deno _testcase-bun _testcase-php _testcase-python _testcase-golang _testcase-common
+test-fx: _testcase-node _testcase-pnpm _testcase-deno _testcase-bun _testcase-php _testcase-php-coverage _testcase-python _testcase-golang _testcase-common
 
 .PHONY: test-php
 test-php: DOCKER_TAG=php
@@ -67,11 +67,20 @@ _testcase-deno:
 _testcase-bun:
 	$(TEST_RUN) bun --version
 
+.PHONY: _testcase-pnpm
+_testcase-pnpm:
+	$(TEST_RUN) pnpm --version
+
 .PHONY: _testcase-php
 _testcase-php:
 	$(TEST_RUN) php --version
 	$(TEST_RUN) composer --version
 
+.PHONY: _testcase-php-coverage
+_testcase-php-coverage:
+	$(TEST_RUN) php -r "exit(extension_loaded('xdebug') ? 0 : 1);"
+	$(TEST_RUN) php -r "exit(extension_loaded('pcov') ? 0 : 1);"
+
 .PHONY: _testcase-python
 _testcase-python:
 	$(TEST_RUN) python3 --version

README.md

@@ -39,7 +39,7 @@ So you’re replacing the plain enterprise base with the same foundation plus ou
 
 **Base:** `codercom/enterprise-base:ubuntu` (Ubuntu, `coder` user, usual Coder expectations).
 
-- **Node.js** (includes **npm**) via Nodesource (**Node 22** in this image).
+- **Node.js** (includes **npm**) via Nodesource (**Node 22** in this image), plus **pnpm**.
 - **Shell:** `mc`, `nano`, `tmux`.
 - **PHP 8.5** (Ondrej PPA): CLI + common extensions (curl, intl, mbstring, mysql, pgsql, redis, xml, zip, imagick, etc.).
 - **Composer**, **GitHub CLI (`gh`)**, **GitLab CLI (`glab`)**.

fx/Dockerfile

@@ -90,6 +90,8 @@ RUN \
     chmod 0755 /usr/local/bin/opencode && \
     # NPM: CODEX, COPILOT #######################################################
     npm install -g @openai/codex @github/copilot && \
+    # PNPM ######################################################################
+    npm install -g pnpm && \
     # AGENT-BROWSER ##############################################################
     npm install -g agent-browser && \
     runuser -u coder -- agent-browser install && \