rename: catch docs up to the humanoid_control / berkeley-humanoids rename

[T-K-233]

Catches the documentation site up to the bar_* → humanoid_control_* series rename that already merged across the code repos. Token-only swaps within existing prose plus the site/deploy config, one doc-file rename, and regenerated SVG diagrams.

Token classes changed (882 replacements across 64 files)

Repo / org / site identity

• T-K-233/BAR-ROS2-Docs, T-K-233/bar_ros2_docs, BAR-ROS2-Docs, bar_ros2_docs → Berkeley-Humanoids/Humanoid-Control-Website / Humanoid-Control-Website
• T-K-233/bar_ros2 → Berkeley-Humanoids/humanoid_control

Conda channel + package names

• bar-robotics → berkeley-humanoids
• ros-jazzy-bar-controllers → ros-jazzy-humanoid-controllers; ros-jazzy-bar-* → ros-jazzy-humanoid-control-*

ROS / C++ package + namespace tokens

• bar_controllers → humanoid_controllers (special de-doubled case)
• bare bar_ros2 → humanoid_control
• all other bar_* packages → humanoid_control_* (msgs, common, policy, sito, robstride, socketcan, cli, bringup_lite/prime, description_prime, msgs_dds, …)
• bar:: and namespace bar → humanoid_control:: / namespace humanoid_control
• pluginlib lookup names bar/<ClassName> → humanoid_control/<ClassName>
• runtime services /bar/mode/* → /humanoid_control/mode/*

CLI command (safe contexts only — English word "bar" untouched)

• pixi run bar … → pixi run hc …; ros2 run humanoid_control_cli bar → … hc; backtick `bar` → `hc`; bar bus|motor|viz|calibrate|--help → hc …

Other changes

• Renamed docs/how_to/talk_to_bar_ros2_from_python.md → talk_to_humanoid_control_from_python.md (git mv) and updated the sidebar entry + all 7 cross-links.
• docusaurus.config.ts deploy config — see values below.
• Regenerated the 10 SVG diagrams that embed package-name labels (via the stdlib-only scripts/draw_diagrams.py, which was also token-swapped).
• package.json name set to npm-valid lowercase humanoid-control-website (uppercase repo name is not a valid npm package name); matched the two root name fields in package-lock.json so npm ci won't fail on a name mismatch (dependency tree untouched).

docusaurus.config.ts deployment values

• title: 'humanoid_control', tagline: 'humanoid_control low-level control stack'
• organizationName: 'Berkeley-Humanoids', projectName: 'Humanoid-Control-Website'
• url: 'https://berkeley-humanoids.github.io', baseUrl: '/Humanoid-Control-Website/'
• editUrl: https://github.com/Berkeley-Humanoids/Humanoid-Control-Website/tree/main/
• GitHub code links → https://github.com/Berkeley-Humanoids/humanoid_control
• copyright → "Humanoid Control Dev"

⚠️ Deploy URL caveat — please confirm

url/baseUrl assume standard GitHub Pages for Berkeley-Humanoids/Humanoid-Control-Website, i.e. it deploys to https://berkeley-humanoids.github.io/Humanoid-Control-Website/. If the org uses a custom domain (or an org-root berkeley-humanoids.github.io site), url/baseUrl need adjusting before the GitHub Pages build will serve correctly.

Left intentionally untouched (out of scope)

• Prose "BAR" / "Berkeley Architecture Research (BAR)" abbreviation, logo.alt's "BAR humanoid logo", and example project names bar-app (a user-created pixi project in the install guide).
• The bar.repos vcs manifest filename (not in the rename spec; the code repo kept it).
• Other separate repos still under T-K-233: pianist_ros2, Lite-Lowlevel-Python, Prime-Description, Robot-Descriptions, and bar-ros2-project — these weren't part of this rename spec; update separately if/when those repos move.
• CSS internal tokens --bar-accent, .bar-mermaid-caption.

Cannot build locally (no Node) — relying on the docs build CI workflow for validation.

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