[zdevzone]

Custom commands now have a searchable Alt+X picker that inserts selections into the editable Zsh prompt without executing them. The README introduces the setup with theme previews, included tools, installation steps, and links to focused documentation.

• Reconcile the supplied aliases/functions while preserving existing Docker helpers; show descriptions and full definitions in fzf.
• Keep existing automatic missing-Zsh installation and fix fresh-shell launch instructions, with regression coverage.
• Organize terminal, tool, customization, and PostgreSQL references behind a documentation index.
• Add Quick-term and iTerm2 rendered samples, a real fzf terminal capture, reusable PNG/SVG assets, and a regeneration script with synthetic prompt data.
• Install Zsh/fzf in unit CI so the terminal integration tests run.

Validation: 141 tests run, 139 passed and 2 optional live PostgreSQL tests skipped; 98 local documentation links and anchors checked; shell syntax and git diff checks passed. Preview images were generated and visually inspected, and PTY tests verify insertion without execution and cancellation behavior.

Repository description and 20 relevant GitHub topics were updated separately.