fix: invalid // comment headers break YAML/just parsing (use #) (#30)

The estate-standardization "Owner:" header was written with C-style // in
files that use # comments (.gitlab-ci.yml, .pre-commit-config.yaml, Justfile,
container/.gatekeeper.yaml), which is invalid and breaks those parsers.
Changed `// Owner:` -> `# Owner:`. (.adoc files left as-is: // is valid there.)

https://claude.ai/code/session_017TXizM5c1Yd9HWf7Y15YH2

Co-authored-by: Claude <noreply@anthropic.com>

Author: hyperpolymath

.gitlab-ci.yml

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
-// Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
+# Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 # Primary CI/CD - GitLab is the source of truth
 
 stages:

.pre-commit-config.yaml

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
-// Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
+# Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 # Pre-commit hooks for hyperpolymath RSR repos.
 # Install: pip install pre-commit && pre-commit install
 # Run manually: pre-commit run --all-files

Justfile

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
-// Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
+# Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 # Copyright (c) 2026 Jonathan D.A. Jewell (hyperpolymath) <j.d.a.jewell@open.ac.uk>
 #
 # RSR Standard Justfile Template

container/.gatekeeper.yaml

@@ -1,5 +1,5 @@
 # SPDX-License-Identifier: MPL-2.0
-// Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
+# Owner: Jonathan D.A. Jewell <j.d.a.jewell@open.ac.uk>
 #
 # Svalinn gatekeeper policy for KRL
 #