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

16 files changed, 0 insertions, 0 deletions

diff --git a/docs/contributing/md-build-vyos.md b/docs/contributing/build-vyos.md
index bfda5298..bfda5298 100644
--- a/docs/contributing/md-build-vyos.md
+++ b/docs/contributing/build-vyos.md
diff --git a/docs/contributing/md-cla.md b/docs/contributing/cla.md
index 01323111..01323111 100644
--- a/docs/contributing/md-cla.md
+++ b/docs/contributing/cla.md
diff --git a/docs/contributing/md-debugging.md b/docs/contributing/debugging.md
index d3b4b513..d3b4b513 100644
--- a/docs/contributing/md-debugging.md
+++ b/docs/contributing/debugging.md
diff --git a/docs/contributing/md-development.md b/docs/contributing/development.md
index 8d2cec40..8d2cec40 100644
--- a/docs/contributing/md-development.md
+++ b/docs/contributing/development.md
diff --git a/docs/contributing/md-index.md b/docs/contributing/index.md
index f26a6b70..f26a6b70 100644
--- a/docs/contributing/md-index.md
+++ b/docs/contributing/index.md
diff --git a/docs/contributing/md-issues-features.md b/docs/contributing/issues-features.md
index ab235326..ab235326 100644
--- a/docs/contributing/md-issues-features.md
+++ b/docs/contributing/issues-features.md
diff --git a/docs/contributing/build-vyos.rst b/docs/contributing/rst-build-vyos.rst
index 65298a7a..65298a7a 100644
--- a/docs/contributing/build-vyos.rst
+++ b/docs/contributing/rst-build-vyos.rst
diff --git a/docs/contributing/cla.rst b/docs/contributing/rst-cla.rst
index c19e266a..c19e266a 100644
--- a/docs/contributing/cla.rst
+++ b/docs/contributing/rst-cla.rst
diff --git a/docs/contributing/debugging.rst b/docs/contributing/rst-debugging.rst
index da8186ae..da8186ae 100644
--- a/docs/contributing/debugging.rst
+++ b/docs/contributing/rst-debugging.rst
diff --git a/docs/contributing/development.rst b/docs/contributing/rst-development.rst
index 5de950df..5de950df 100644
--- a/docs/contributing/development.rst
+++ b/docs/contributing/rst-development.rst
diff --git a/docs/contributing/index.rst b/docs/contributing/rst-index.rst
index 18b925ec..18b925ec 100644
--- a/docs/contributing/index.rst
+++ b/docs/contributing/rst-index.rst
diff --git a/docs/contributing/issues-features.rst b/docs/contributing/rst-issues-features.rst
index b1e1d732..b1e1d732 100644
--- a/docs/contributing/issues-features.rst
+++ b/docs/contributing/rst-issues-features.rst
diff --git a/docs/contributing/testing.rst b/docs/contributing/rst-testing.rst
index d7455103..d7455103 100644
--- a/docs/contributing/testing.rst
+++ b/docs/contributing/rst-testing.rst
diff --git a/docs/contributing/upstream-packages.rst b/docs/contributing/rst-upstream-packages.rst
index c740b190..c740b190 100644
--- a/docs/contributing/upstream-packages.rst
+++ b/docs/contributing/rst-upstream-packages.rst
diff --git a/docs/contributing/md-testing.md b/docs/contributing/testing.md
index b68cad1b..b68cad1b 100644
--- a/docs/contributing/md-testing.md
+++ b/docs/contributing/testing.md
diff --git a/docs/contributing/md-upstream-packages.md b/docs/contributing/upstream-packages.md
index fe01df82..fe01df82 100644
--- a/docs/contributing/md-upstream-packages.md
+++ b/docs/contributing/upstream-packages.md