Docs subtask: final consistency review and documentation validation

[JusterZhu]

Parent: #45

Scope

Perform the final review after component pages, Tools docs, and cookbook tracks are written.

Acceptance criteria

• Terminology, links, sidebar navigation, and i18n structure are consistent.
• Firmware-specific content is not included in this scope.
• Existing website build or validation command passes.
• Code snippets match current Samples and package names.

[JusterZhu]

Completed: final consistency review performed across all documentation PRs. Key fixes applied:\n- Removed outdated ClientCore/Common references (#67)\n- Fixed sidebar IA and i18n layout (#63)\n- Rewrote beginner cookbook for new Hub structure (#62)\n- Fixed advanced cookbook ClientCore references (#64)\n- All component docs rebased and merged (#56-60)\n- Verification: terminology, links, sidebar, i18n structure are now consistent.