[NaNIsaac]

Tier: low

• Sidebar and top navigation: groups become Getting Started, Guides, Reference, Project (en and ko). No page is added, moved or renamed; URLs stay the same.
• site/scripts/check_reference.py can also check the reference against the Rust build (--rust-json docs/cli-matrix.json, the matrix from docs: generate a matrix of commands and options in each build #35).
• No change to the CLI, README or page text.

Stacked on #34 (base docs/home-redesign).

Changes

• Getting Started: Installation, then Quick Start (the existing getting-started page).
• Guides: Recipes with three entries that open its sections (sharing code with an AI, working with changes, debugging a failed command), and MCP Integration. The Korean headings already carry the same ASCII ids (docs(site): terminal demo, workflows and security on the homepage #34).
• Reference: Command Reference, Configuration, Output Formats, Terminal Capture.
• Project: Security, Architecture, Rust and Python Builds (the rust-port page), Contributing.
• Top navigation: Getting Started, Guides, Reference, Security, More; each item stays active on its group's pages.
• No "Understanding a codebase" guide: there is no page for it yet, and the digest workflow is already in the sharing recipe.

Checked against the CLI

• Option tables are checked against the Python build as before. Options only the binary has are documented under a heading of their own (today only #### --raw, only in the binary under cdg term). The check now reads those headings, and with --rust-json compares the tables plus those headings with the "rust" key of docs/cli-matrix.json (generated from clap in docs: generate a matrix of commands and options in each build #35, hidden options included).
• uv run python site/scripts/check_reference.py --rust-json docs/cli-matrix.json with the matrix from docs: generate a matrix of commands and options in each build #35: "reference matches the CLI: 21 commands, 107 options; Rust build: 108 options". Without the flag: "21 commands, 107 options", as before.
• Negative tests: deleting the --raw heading fails with "option --raw of the Rust build is not documented"; adding --raw to the Korean table fails with "documents --raw, which the Python build does not have".
• The other difference in the matrix, -V for the version only in Rust, is a root option and outside the per-command tables.
• Once docs: generate a matrix of commands and options in each build #35 is on main, add --rust-json docs/cli-matrix.json to the check step in docs.yml. It is not wired here, so this PR does not depend on docs: generate a matrix of commands and options in each build #35.
• ruff check and ruff format --check pass.

Validation

• npm run build passes; internal links: one known broken anchor, fixed by fix(site): link the Korean install section by an ASCII id #32.
• Headless Chromium on recipes (en and ko with section anchors), commands, ko/mcp, rust-port, installation: the active sidebar entry follows the URL hash, the nav group is active, no console errors.

Screenshots

Before	After