docs: add comprehensive documentation for operations

This commit introduces a complete set of documentation files
covering various aspects of the project, including environment
setup, quality checks, command references, and architecture.
The documentation is structured to assist developers and
contributors in understanding the project's configuration,
workflow, and best practices.

Additionally, translations for Simplified and Traditional
Chinese have been added to ensure accessibility for a wider
audience. This enhances the overall usability and
maintainability of the project.

Signed-off-by: Bertrand Yuan <github@bertyuan.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/Documentation/source/frontend/accessibility.rst b/Documentation/source/frontend/accessibility.rst
new file mode 100644
index 0000000..bca6fbf
--- /dev/null
+++ b/Documentation/source/frontend/accessibility.rst
@@ -0,0 +1,48 @@
+Accessibility
+=============
+
+Baseline
+--------
+
+The current frontend already uses semantic landmarks such as ``main``,
+``section``, and ``article`` in key routes. Several icon buttons include
+accessible labels, and theme-aware colors are centralized through design
+tokens.
+
+Required Practices
+------------------
+
+* Give icon-only controls an accessible name.
+* Preserve visible keyboard focus for custom controls.
+* Keep text readable in both light and dark themes.
+* Use semantic elements before ARIA.
+* Do not hide essential navigation or status only behind animation.
+* Validate empty, loading, success, and error states for forms.
+
+Review Checklist
+----------------
+
+.. list-table::
+   :header-rows: 1
+   :widths: 34 42
+
+   * - Check
+     - Expected Result
+   * - Keyboard navigation
+     - Header, menus, buttons, form controls, and links are reachable.
+   * - Screen reader labels
+     - Icon-only actions have clear names.
+   * - Contrast
+     - Text and UI states remain readable in light and dark modes.
+   * - Layout
+     - Text does not overlap or overflow at mobile and desktop breakpoints.
+   * - Feedback
+     - Form errors and success states are visible and announced where needed.
+
+Known Follow-ups
+----------------
+
+* Improve visible focus states for all custom controls.
+* Audit icon-only social and action links.
+* Add reusable empty states for posts and tags.
+* Add visual regression coverage for critical routes.