feat: import MyST swap mechanism, llms.txt feature, and content from current

Replaces the broken #1885/#1869/#1875 trio with a single PR for circinus.

This PR:
- Imports 254 md-*.md files from currents working MyST conversion (the
  broken converter that produced #1885s md-*.md files is not used here;
  currents files are correct as verified on /en/rolling/).
- Adds the per-page RST-to-MyST swap mechanism: scripts/swap_sources.py,
  scripts/import_myst.py, tests, _swap.txt, _ext/vyos.py and Makefile
  swap-wrapped targets, .readthedocs.yml pre/post hooks.
- Replaces 175 .jpg/.png with 187 .webp images for swapped pages.
- Adds the llms.txt + sitemap feature (sphinx_llms_txt, sphinx_sitemap)
  with circinus-tailored html_baseurl https://docs.vyos.io/en/1.5/ and
  curated docs/_html_extra/llms.txt for 1.5.x.
- Updates docs/_html_extra/robots.txt with AI crawler Allow rules and
  the /en/1.5/sitemap.xml reference.
- Drops configuration/service/suricata from the swap set (no matching
  RST sibling on circinus; suricata is a current-only feature).

Supersedes:
- #1885 (broken md-*.md converter output)
- #1869 (LLM doc adaptation backport, bundled here)
- #1875 (llms.txt circinus, bundled here)

Generated by robots https://vyos.io

1 files changed, 138 insertions, 0 deletions

diff --git a/docs/configuration/service/md-https.md b/docs/configuration/service/md-https.md
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+(http-api)=
+
+# HTTP API
+
+VyOS provide an HTTP API. You can use it to execute op-mode commands,
+update VyOS, set or delete config.
+
+Please take a look at the {ref}`vyosapi` page for an detailed how-to.
+
+## Configuration
+
+```{cfgcmd} set service https allow-client address \<address\>
+
+Only allow certain IP addresses or prefixes to access the https
+webserver.
+```
+
+```{cfgcmd} set service https certificates ca-certificate \<name\>
+
+Use CA certificate from PKI subsystem
+```
+
+```{cfgcmd} set service https certificates certificate \<name\>
+
+Use certificate from PKI subsystem
+```
+
+```{cfgcmd} set service https certificates dh-params \<name\>
+
+Use {abbr}`DH (Diffie–Hellman)` parameters from PKI subsystem.
+Must be at least 2048 bits in length.
+```
+
+```{cfgcmd} set service https listen-address \<address\>
+
+Webserver should only listen on specified IP address
+```
+
+```{cfgcmd} set service https port \<number\>
+
+Webserver should listen on specified port.
+
+Default: 443
+```
+
+```{cfgcmd} set service https enable-http-redirect
+
+Enable automatic redirect from http to https.
+```
+
+```{cfgcmd} set service https tls-version \<1.2 | 1.3\>
+
+Select TLS version used.
+
+This defaults to both 1.2 and 1.3.
+```
+
+```{cfgcmd} set service https vrf \<name\>
+
+Start Webserver in given VRF.
+```
+
+```{cfgcmd} set service https request-body-size-limit \<size\>
+
+Set the maximum request body size in megabytes. Default is 1MB.
+```
+
+
+### API
+
+```{cfgcmd} set service https api keys id \<name\> key \<apikey\>
+
+Set a named api key. Every key has the same, full permissions
+on the system.
+```
+
+
+### REST
+
+```{cfgcmd} set service https api rest
+
+Enable REST API
+```
+
+```{cfgcmd} set service https api rest debug
+
+To enable debug messages. Available via {opcmd}`show log` or
+{opcmd}`monitor log`
+```
+
+```{cfgcmd} set service https api rest strict
+
+Enforce strict path checking.
+```
+
+
+### GraphQL
+
+```{cfgcmd} set service https api graphql introspection
+
+Enable GraphQL Schema introspection.
+```
+
+:::{note}
+Do not leave introspection enabled in production, it is a security risk.
+:::
+
+```{cfgcmd} set service https api graphql authentication type \<key | token\>
+
+Set the authentication type for GraphQL, default option is key. Available options are:
+* ``key`` use API keys configured in ``service https api keys``
+* ``token`` use JWT tokens.
+```
+
+```{cfgcmd} set service https api graphql authentication expiration
+
+Set the lifetime for JWT tokens in seconds. Default is 3600 seconds.
+```
+
+```{cfgcmd} set service https api graphql authentication secret-length
+
+Set the byte length of the JWT secret. Default is 32.
+```
+
+```{cfgcmd} set service https api graphql cors allow-origin \<origin\>
+
+Allow cross-origin requests from \<origin\>.
+```
+
+
+## Example Configuration
+
+Setting REST API and an API-KEY is the minimal configuration to get a working API Endpoint.
+
+```none
+set service https api keys id MY-HTTPS-API-ID key MY-HTTPS-API-PLAINTEXT-KEY
+set service https api rest
+```