feat: flip swap mechanism on sagitta — MD as primary, RST as override

Mirror of #1899 (current) and #1900 (circinus) for sagitta. Same logic,
same scripts, per-branch file set.

Changes:
- Rename docs/**/md-<stem>.md to docs/**/<stem>.md (drop md- prefix) for
  all 210 stems previously listed in docs/_swap.txt
- Rename docs/**/<stem>.rst to docs/**/rst-<stem>.rst (add rst- prefix)
  for the same 210 stems
- Repurpose docs/_swap.txt as docs/_rst_overrides.txt; initially empty
- conf.py exclude_patterns flipped: rst-*.rst excluded by default
- conf.py runtime-artifact references updated to _rst_override_state.json
  and _md_exclude.txt
- scripts/swap_sources.py imported from current (post-#1899 rewrite, with
  inverted rename direction)
- scripts/import_myst.py and tests/test_import_myst.py deleted (obsolete)
- tests/test_swap_sources.py imported from current (post-#1899 rewrite)

Side-effect: fixes the same 404 on /en/1.4/ View page source links that
#1899 fixed for /en/rolling/ and #1900 fixed for /en/1.5/.

Per-branch differences vs #1899:
- sagitta has 210 stems vs current's 254 (sagitta has no vpp pages and
  fewer current-only features; cli + installation/cloud/aws are still
  RST-only on sagitta pending the title-level fix follow-up)
- otherwise the script/conf.py/test changes are byte-identical with current

Generated by robots https://vyos.io

14 files changed, 0 insertions, 0 deletions

diff --git a/docs/installation/cloud/md-aws-ha.md b/docs/installation/cloud/aws-ha.md
index f32e2ab5..f32e2ab5 100644
--- a/docs/installation/cloud/md-aws-ha.md
+++ b/docs/installation/cloud/aws-ha.md
diff --git a/docs/installation/cloud/md-aws-to-azure.md b/docs/installation/cloud/aws-to-azure.md
index 246df5f3..246df5f3 100644
--- a/docs/installation/cloud/md-aws-to-azure.md
+++ b/docs/installation/cloud/aws-to-azure.md
diff --git a/docs/installation/cloud/md-azure-ha.md b/docs/installation/cloud/azure-ha.md
index fa94c222..fa94c222 100644
--- a/docs/installation/cloud/md-azure-ha.md
+++ b/docs/installation/cloud/azure-ha.md
diff --git a/docs/installation/cloud/md-azure.md b/docs/installation/cloud/azure.md
index aa577aa1..aa577aa1 100644
--- a/docs/installation/cloud/md-azure.md
+++ b/docs/installation/cloud/azure.md
diff --git a/docs/installation/cloud/md-gcp.md b/docs/installation/cloud/gcp.md
index 7144f083..7144f083 100644
--- a/docs/installation/cloud/md-gcp.md
+++ b/docs/installation/cloud/gcp.md
diff --git a/docs/installation/cloud/md-index.md b/docs/installation/cloud/index.md
index f64883fc..f64883fc 100644
--- a/docs/installation/cloud/md-index.md
+++ b/docs/installation/cloud/index.md
diff --git a/docs/installation/cloud/md-oracel.md b/docs/installation/cloud/oracel.md
index 9ed07ff9..9ed07ff9 100644
--- a/docs/installation/cloud/md-oracel.md
+++ b/docs/installation/cloud/oracel.md
diff --git a/docs/installation/cloud/aws-ha.rst b/docs/installation/cloud/rst-aws-ha.rst
index af125969..af125969 100755
--- a/docs/installation/cloud/aws-ha.rst
+++ b/docs/installation/cloud/rst-aws-ha.rst
diff --git a/docs/installation/cloud/aws-to-azure.rst b/docs/installation/cloud/rst-aws-to-azure.rst
index 81651feb..81651feb 100755
--- a/docs/installation/cloud/aws-to-azure.rst
+++ b/docs/installation/cloud/rst-aws-to-azure.rst
diff --git a/docs/installation/cloud/azure-ha.rst b/docs/installation/cloud/rst-azure-ha.rst
index e943b550..e943b550 100755
--- a/docs/installation/cloud/azure-ha.rst
+++ b/docs/installation/cloud/rst-azure-ha.rst
diff --git a/docs/installation/cloud/azure.rst b/docs/installation/cloud/rst-azure.rst
index 563fcb19..563fcb19 100644
--- a/docs/installation/cloud/azure.rst
+++ b/docs/installation/cloud/rst-azure.rst
diff --git a/docs/installation/cloud/gcp.rst b/docs/installation/cloud/rst-gcp.rst
index 0c23353e..0c23353e 100644
--- a/docs/installation/cloud/gcp.rst
+++ b/docs/installation/cloud/rst-gcp.rst
diff --git a/docs/installation/cloud/index.rst b/docs/installation/cloud/rst-index.rst
index 7a17f18d..7a17f18d 100644
--- a/docs/installation/cloud/index.rst
+++ b/docs/installation/cloud/rst-index.rst
diff --git a/docs/installation/cloud/oracel.rst b/docs/installation/cloud/rst-oracel.rst
index 72c40127..72c40127 100644
--- a/docs/installation/cloud/oracel.rst
+++ b/docs/installation/cloud/rst-oracel.rst