feat: flip swap mechanism — MD as primary, RST as override (Phase 1)

This is the first of three phases inverting the per-page swap mechanism
so MD becomes the canonical primary and RST becomes the rare override.

Phase 1 — file renames + conf.py exclude_patterns flip only:
- Rename docs/**/md-<stem>.md to docs/**/<stem>.md (drop md- prefix)
  for all 254 stems previously listed in docs/_swap.txt
- Rename docs/**/<stem>.rst to docs/**/rst-<stem>.rst (add rst- prefix)
  for the same 254 stems
- Repurpose docs/_swap.txt as docs/_rst_overrides.txt; initially empty
  comment-only since no pages need the RST fallback right now
- conf.py exclude_patterns flipped: rst-*.rst is now excluded by default
  instead of md-*.md
- conf.py runtime-artifact references updated to _rst_override_state.json
  and _md_exclude.txt (Phase 2 will rewrite swap_sources.py to produce
  these names; for now no swap script runs because overrides list is empty)

Phase 2 (next commit on this branch) will rewrite scripts/swap_sources.py
with inverted rename direction, delete scripts/import_myst.py + tests, and
update tests/test_swap_sources.py for the new semantics.

Phase 3 will be the cleanup pass and ready-for-review flip.

Generated by robots https://vyos.io

1 files changed, 36 insertions, 0 deletions

diff --git a/docs/troubleshooting/interfaces.md b/docs/troubleshooting/interfaces.md
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+++ b/docs/troubleshooting/interfaces.md
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+# Interface Names
+
+If you find the names of your interfaces have changed, this could be because
+your MAC addresses have changed.
+
+- For example, you have a VyOS VM with 4 Ethernet interfaces named
+  eth0, eth1, eth2 and eth3. Then, you migrate your VyOS VM to a different
+  host and find your interfaces now are eth4, eth5, eth6 and eth7.
+
+  One way to fix this issue **taking control of the MAC addresses** is:
+
+  Log into VyOS and run this command to display your interface settings.
+
+  ```none
+  show interfaces detail
+  ```
+
+  Take note of MAC addresses.
+
+  Now, in order to update a MAC address in the configuration, run this command
+  specifying the interface name and MAC address you want.
+
+  ```none
+  set interfaces ethernet eth0 hw-id 00:0c:29:da:a4:fe
+  ```
+
+  If it is a VM, go into the settings of the host and set the MAC address to
+  the settings found in the config.boot file. You can also set the MAC to
+  static if the host allows so.
+
+- Another example could be when cloning VyOS VMs in GNS3 and you get into the
+  same issue: interface names have changed.
+
+  And **a more generic way to fix it** is just deleting every MAC address at
+  the configuration file of the cloned machine. They will be correctly
+  regenerated automatically.