docs: rename TuyaOpenClaw to TClaw

[maidang-xing]

Renames the Agent product from TuyaOpenClaw to TClaw across docs, page
content, navigation data, sidebars, i18n translation keys and links.

Companion to tuya/TClaw#48.

Also moves the legacy slug layer

The routes were still published under the even older duckyclaw brand, so
this moves them onto the new name in the same pass:

• docs/duckyclaw/ → docs/tclaw/ (and the zh i18n mirror)
• src/pages/duckyclaw.{js,module.css} → src/pages/tclaw.{js,module.css}
• duckyclawSidebar → tclawSidebar; CSS module .duckyclawTheme → .tclawTheme
• routes /duckyclaw → /tclaw, /docs/duckyclaw/* → /docs/tclaw/*

i18n keys are derived from the sidebar id and from label text, so
sidebar.duckyclawSidebar.* (current.json) and
link.item.label.TuyaOpenClaw 🦞 (footer.json / navbar.json) moved with
them — otherwise the whole subtree would have silently reverted to English.

No URL is lost

Added to the existing createRedirects moves map in docusaurus.config.js:

['/docs/tclaw/', '/docs/duckyclaw/'],
['/tclaw', '/duckyclaw'],

The build emits all 16 redirect stubs — /duckyclaw, /zh/duckyclaw, and
7 + 7 /docs/duckyclaw/X for both locales — each with a canonical pointing
at its /docs/tclaw/X replacement.

Verification

Diffed the generated site against a full build of the pre-rename commit:

pages before	804
pages after	820
pages present in both	788
of those, byte-identical once the rename and Docusaurus content hashes are normalized	788 / 788
old pages removed	16 (the /duckyclaw set)
new pages added	16 /tclaw pages + 16 /duckyclaw redirect stubs

So nothing outside the renamed section changed, and every old URL still
resolves. pnpm build passes for both locales.

Also verified statically (the site sets onBrokenLinks: 'warn', so the build
alone does not gate this): every doc id in tclawSidebar resolves in both
locales, sidebarId matches the export, zero orphaned i18n keys introduced,
zero broken links among the renamed docs, and all 88 styles.* referenced in
tclaw.js exist in tclaw.module.css.

Deliberately left alone

CamelCase DuckyClaw / Ducky brand wording, the DuckyClaw-*.md and
ducky-quick-start-*.md filenames, DUCKYCLAW_DEVICE_ID / "duckyclaw-001"
in code samples, github.com/tuya/DuckyClaw links, and the
duckyclaw-smart-car tutorial id. The old duckyclaw SEO keyword is kept
alongside the new tclaw one.

Note i18n/zh/.../projects/duckyclaw.md is intentionally not renamed — it
has no English source doc so nothing consumes the translation, and its content
is about VerdureLab rather than TClaw.

One pre-existing bug left for a separate PR

.cursor/skills/tuyaopen-docs-author/SKILL.md says the repo exports "four
sidebars" and its copy-paste i18n audit snippet uses a 4-element Set. The
repo actually exports five, so that command silently skips tyutoolSidebar —
which is exactly where the only two untranslated sidebar labels live. Out of
scope here.

🤖 Generated with Claude Code