docs(run-a-node): dig-node control panel user guide (cache/LRU, pairing, live status)

[MichaelTaylor3d]

Summary

• New page The dig-node Control Panel (docs/run-a-node/control-panel.md, slug control-panel), documenting the DIG extension's Control Panel: opening it (Network tab, fullscreen vs. compact popup summary), live status, reserving disk space for the .dig cache under LRU eviction (64 MiB floor, per-entry eviction order with size + last-used, single-item evict, clear all — all available with no pairing), the compare-codes control-token pairing flow (dig-node pair approve <pairing-id> / dig-node pair revoke <token-id>, 6-digit code, few-minutes expiry), and the token-gated management sections unlocked after pairing (upstream, hosted stores, sync, peers).
• Shipped in all 14 locales (en + de/es/fr/hi/id/ja/ko/pt-BR/ru/tr/vi/zh-CN/zh-TW) — each locale gets a fully translated, materialized copy (Docusaurus .md links don't fall back across locales).
• Added to the sidebar (run-a-node category, after "Manage your node"), linked from docs/run-a-node/index.md and docs/run-a-node/manage.md (all 14 locales), and added to static/llms.txt.
• Regenerated static/knowledge-graph.json / static/openrpc*.json via npm run gen to pick up the new page.
• No internal references (SPEC.md/CLAUDE.md/issue numbers) leaked into user-facing copy; positive voice throughout (§4.3).

Version bump

Patch: 0.3.17 → 0.3.18. This is a docs:-type commit (new documentation content, no public API/behavior change) — per this repo's own convention every prior docs(...) PR bumped patch (e.g. #29, #28, #27, #25, #23), and CLAUDE.md §2.4 classifies docs changes as patch.

Verified locally (all green)

• npm run typecheck — clean
• npm run build — succeeds across all 14 locales (onBrokenLinks/onBrokenAnchors: "throw" — no broken links/anchors); dist/llms.txt, dist/sitemap.xml, dist/robots.txt all present; 117 URLs × 14 sitemaps regenerated with hreflang
• npm run test:unit — 1/1 pass
• npm run test:a11y — 22/22 pass (axe WCAG 2.2 AA, ARIA snapshots, keyboard nav, mobile nav)
• npm run test:e2e — 28/28 pass (incl. llms.txt is served and lists the shipped locales, sitemap/hreflang, robots.txt)

These are exactly the jobs deploy.yml's test job runs on this PR.

Test plan

• docs.dig.net/docs/run-a-node/control-panel renders the new guide (build verified)
• Sidebar shows "The dig-node Control Panel" under Node operators, after "Manage your node"
• run-a-node/index.md and run-a-node/manage.md cross-link to the new page in all 14 locales
• llms.txt lists the new page
• CI (deploy.yml test job, commitlint, ensure-version-increment) green on this PR

Closes #282
Refs #278

🤖 Generated with Claude Code