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/python/example.py

@@ -0,0 +1,70 @@
+#!/usr/bin/env python3
+"""example.py — Demonstrates core Python features for Doom Emacs workflow.
+
+Navigate: C-M-a/e (function boundaries), SPC s i (imenu), gd (definition)
+Format:   SPC m f (ruff format), Run: SPC m r
+"""
+
+import argparse
+from dataclasses import dataclass, field
+
+
+@dataclass
+class Task:
+    """A simple task with priority and tags."""
+
+    title: str
+    priority: int = 0
+    tags: list[str] = field(default_factory=list)
+    done: bool = False
+
+    def mark_done(self) -> None:
+        self.done = True
+
+    def summary(self) -> str:
+        status = "DONE" if self.done else "TODO"
+        tag_str = ", ".join(self.tags) if self.tags else "none"
+        return f"[{status}] {self.title} (p{self.priority}, tags: {tag_str})"
+
+
+def filter_tasks(tasks: list[Task], *, min_priority: int = 0) -> list[Task]:
+    """Return undone tasks with priority >= min_priority."""
+    return [t for t in tasks if not t.done and t.priority >= min_priority]
+
+
+def load_tasks_from_file(path: str) -> list[Task]:
+    """Load tasks from a simple text file (one title per line)."""
+    tasks: list[Task] = []
+    try:
+        with open(path, encoding="utf-8") as fh:
+            for i, line in enumerate(fh):
+                title = line.strip()
+                if title:
+                    tasks.append(Task(title=title, priority=i % 3))
+    except FileNotFoundError:
+        print(f"File not found: {path}, using demo tasks")
+        tasks = [
+            Task("Write tests", priority=2, tags=["dev"]),
+            Task("Update docs", priority=1, tags=["docs"]),
+            Task("Deploy v2", priority=2, tags=["ops", "dev"]),
+        ]
+    return tasks
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Task manager demo")
+    parser.add_argument("-f", "--file", default="tasks.txt", help="Task file")
+    parser.add_argument("-p", "--priority", type=int, default=1, help="Min priority")
+    args = parser.parse_args()
+
+    tasks = load_tasks_from_file(args.file)
+    tasks[0].mark_done()
+
+    important = filter_tasks(tasks, min_priority=args.priority)
+    print(f"Open tasks (priority >= {args.priority}):")
+    for task in important:
+        print(f"  {task.summary()}")
+
+
+if __name__ == "__main__":
+    main()