docs: rewrite README with structured overview and quick start guide

Replaces the minimal project description with a comprehensive README
including a component overview table, quick start instructions, common
Ansible operations, and links to detailed documentation. Aligns with
Red Panda Approval™ standards.

ansible/roles/incus_storage_bucket/tasks/remove.yml

@@ -0,0 +1,48 @@
+---
+# Remove bucket - outputs confirmation to console
+# Use with extreme caution - data loss is permanent
+
+- name: Validate required variables
+  ansible.builtin.assert:
+    that:
+      - bucket_name is defined
+    fail_msg: "Required variable not defined: bucket_name"
+
+- name: Set key name
+  ansible.builtin.set_fact:
+    key_name: "{{ bucket_name }}-access"
+
+- name: Confirm deletion
+  ansible.builtin.pause:
+    prompt: "WARNING: This will permanently delete bucket '{{ bucket_name }}' and all its data. Type 'yes' to continue"
+  register: confirm_delete
+
+- name: Abort if not confirmed
+  ansible.builtin.fail:
+    msg: "Deletion aborted by user"
+  when: confirm_delete.user_input != 'yes'
+
+- name: Delete bucket key
+  ansible.builtin.command:
+    cmd: >
+      incus storage bucket key delete {{ storage_pool }} {{ bucket_name }} {{ key_name }}
+      --project={{ project_name }}
+  register: key_deleted
+  failed_when: false
+
+- name: Delete storage bucket
+  ansible.builtin.command:
+    cmd: >
+      incus storage bucket delete {{ storage_pool }} {{ bucket_name }}
+      --project={{ project_name }}
+  register: bucket_deleted
+
+- name: Display removal confirmation
+  ansible.builtin.debug:
+    msg:
+      - "============================================"
+      - "S3 BUCKET REMOVED: {{ bucket_name }}"
+      - "============================================"
+      - "Remember to remove credentials from vault.yml"
+      - "============================================"
+  when: bucket_deleted is succeeded