Cardano Updates

Bumps [mermaid](https://github.com/mermaid-js/mermaid) from 11.14.0 to 11.15.0.
- [Release notes](https://github.com/mermaid-js/mermaid/releases)
- [Commits](https://github.com/mermaid-js/mermaid/compare/[email protected]@11.15.0)

---
updated-dependencies:
- dependency-name: mermaid
  dependency-version: 11.15.0
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: bora <[email protected]>

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.49 to 8.5.14.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.4.49...8.5.14)

---
updated-dependencies:
- dependency-name: postcss
  dependency-version: 8.5.14
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: bora <[email protected]>

* IoT on Cardano

* add existing community projects

* SEO optimization

* Update documentation for `cardano-testnet` command

Update help snippets, folder structure, added top-level commands, added explanation for specifying per node configurations, and updated all explanations that were no longer applicable.

* Fix link that becomes broken on preview of blog pages

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Co-authored-by: bora <[email protected]>

* feat: generate llms.txt and welcome AI crawlers

* fix: align llms.txt .md paths with rendered URLs (#1791)

* fix: update cardano-cli paths in llms post-build patch after #1780 restructure

* Overhaul SPO and operator docs — restructure, rewrite, and consolidate

- Move all cardano-cli reference docs from get-started/infrastructure/cardano-cli/ to learn/cardano-cli/ with redirects
- Add secure transaction workflow page covering build/sign/submit pattern, mnemonic key derivation (cardano-signer, cardano-addresses), CIP-8 signing, CIP-100 governance metadata, and Calidus registration
- Rewrite security hardening page: nftables (replacing UFW), WireGuard for cross-datacenter relay/BP, fail2ban, systemd unit hardening
- Add SPO governance page: voting on hard forks and no-confidence actions, alwaysAbstain DRep delegation via reward account stake key, Calidus key identity
- Consolidate air-gap docs (cardano-airgap ISO + manual Ubuntu) into single page under learn/educational-resources/
- Move frankenwallet to learn/educational-resources/; add security tag to builder-tools
- Add monitoring section with overview (gLiveView) and Prometheus/Grafana pages moved out of relay-configuration/
- Add Docker security warning and nix build command to installing-cardano-node
- Fix broken redirects for deleted grafana-dashboard-tutorial and monitoring-gLiveView pages
- Fix relative links in monitoring-prometheus-grafana and stake-address-delegation

* Fix redirect targets to match actual doc id slugs

Redirect to paths must match the URL slug derived from frontmatter id,
not the filename. Also point deleted dynamic-block-forging and
rts-options-node redirects at running-cardano.

* Overhaul SPO and operator docs — restructure, rewrite, and consolidate

- Move all cardano-cli reference docs from get-started/infrastructure/cardano-cli/ to learn/cardano-cli/ with redirects
- Add secure transaction workflow page covering build/sign/submit pattern, mnemonic key derivation (cardano-signer, cardano-addresses), CIP-8 signing, CIP-100 governance metadata, and Calidus registration
- Rewrite security hardening page: nftables (replacing UFW), WireGuard for cross-datacenter relay/BP, fail2ban, systemd unit hardening
- Add SPO governance page: voting on hard forks and no-confidence actions, alwaysAbstain DRep delegation via reward account stake key, Calidus key identity
- Consolidate air-gap docs (cardano-airgap ISO + manual Ubuntu) into single page under learn/educational-resources/
- Move frankenwallet to learn/educational-resources/; add security tag to builder-tools
- Add monitoring section with overview (gLiveView) and Prometheus/Grafana pages moved out of relay-configuration/
- Add Docker security warning and nix build command to installing-cardano-node
- Fix broken redirects for deleted grafana-dashboard-tutorial and monitoring-gLiveView pages
- Fix relative links in monitoring-prometheus-grafana and stake-address-delegation

* additions

- replace all "current" mentions by a reference to a date and node version
- add openBlockPerf to monitoring section
- minor text additions

* more minor additions

* back out navbar changes

* update docs per TSC recommendations

---------

Co-authored-by: gufmar <[email protected]>
Co-authored-by: Tommy 🐙 <[email protected]>

Update help snippets, folder structure, added top-level commands, added explanation for specifying per node configurations, and updated all explanations that were no longer applicable.