refactor(swap): rename imported .md files to md- prefix for swap mechanism

Restore the canary file naming convention that swap_sources.py expects:
the imported MyST pages now live as docs/<dir>/md-<name>.md alongside
the existing docs/<dir>/<name>.rst, so swap_sources.py --swap can rename
them into place at build time.

- 254 .md files renamed (every page with a matching .rst counterpart)
- 2 MyST-only pages left at their final names (no .rst exists, no swap
  needed): docs/copyright.md, docs/automation/terraform/terraformvyos.md

All 114 stems listed in docs/_swap.txt now have a corresponding
md-<name>.md source file ready to swap in.

🤖 Generated by [robots](https://vyos.io)

1 files changed, 0 insertions, 59 deletions

diff --git a/docs/coverage.md b/docs/coverage.md
deleted file mode 100644
index fff0dc4e..00000000
--- a/docs/coverage.md
+++ /dev/null
@@ -1,59 +0,0 @@
----
-lastproofread: '2025-11-14'
----
-
-# Coverage
-
-Overview over all commands that are documented in the
-`.. cfgcmd::` or `.. opcmd::` directives.
-
-The build process takes all XML definition files
-from the [vyos-1x](https://github.com/vyos/vyos-1x) repository and a
-periodical export of all VyOS commands and extracts each leaf command, or
-executable command.
-The script compares only the fixed part of a command.
-All variables and values are removed and the string of the commands
-are compared.
-
-For example, take the following two commands:
-
-- documentation: `interfaces ethernet <interface> address
-      <address | dhcp | dhcpv6>`
-- xml: `interfaces ethernet <ethernet> address <address>`
-- VyOS: `interfaces ethernet <text> address <value>`
-
-**There are 3 kinds of issues with commands in the following tables:**
-
-`Not documented yet`
-
-- An XML command is not found in `.. cfgcmd::` or `.. opcmd::` directives.
-- The command should be documented.
-
-`Nothing found in XML Definitions`
-
-- `.. cfgcmd::` or `.. opcmd::` The command is not found in the XML
-  definition.
-- The command location may have changed in the XML definition, the feature
-  is no longer supported in VyOS, or there is a typo in the command.
-
-`Nothing found in VyOS`
-
-- `.. cfgcmd::` or `.. opcmd::` The command is not found in VyOS
-  documentation or the XML definition.
-- The command location may have changed in the XML definition, the feature
-  is no longer supported in VyOS, or there is a typo in the command.
-
-The final list of commands are shown in
-the following two tables:
-
-## Configuration Commands
-
-```{cfgcmdlist}
-:show-coverage:
-```
-
-## Operational Commands
-
-```{opcmdlist}
-:show-coverage:
-```
\ No newline at end of file