docs: add developer-workflow.org and language examples

Complete workflow guide for Perl, Python, Go, Ansible, Terraform, Podman.
Includes working example files in examples/ directory.

examples/ansible/playbook.yml

@@ -0,0 +1,59 @@
+---
+# playbook.yml — Demonstrates core Ansible features for Doom Emacs workflow.
+#
+# Navigate: SPC s i (imenu for tasks), SPC s p (grep in project)
+# Run:      SPC m r (ansible-playbook), Lint: flycheck (ansible-lint)
+
+- name: Configure web server
+  hosts: webservers
+  become: true
+
+  vars:
+    app_user: webapp
+    app_port: 8080
+    packages:
+      - nginx
+      - python3
+      - python3-pip
+
+  handlers:
+    - name: Restart nginx
+      ansible.builtin.service:
+        name: nginx
+        state: restarted
+
+  tasks:
+    - name: Install required packages
+      ansible.builtin.apt:
+        name: "{{ packages }}"
+        state: present
+        update_cache: true
+
+    - name: Create application user
+      ansible.builtin.user:
+        name: "{{ app_user }}"
+        shell: /bin/bash
+        create_home: true
+        state: present
+
+    - name: Deploy nginx config from template
+      ansible.builtin.template:
+        src: templates/nginx.conf.j2
+        dest: /etc/nginx/sites-available/app.conf
+        owner: root
+        group: root
+        mode: "0644"
+      notify: Restart nginx
+
+    - name: Enable site symlink
+      ansible.builtin.file:
+        src: /etc/nginx/sites-available/app.conf
+        dest: /etc/nginx/sites-enabled/app.conf
+        state: link
+      notify: Restart nginx
+
+    - name: Ensure nginx is running
+      ansible.builtin.service:
+        name: nginx
+        state: started
+        enabled: true