feat: add VCS workflows and cycle extension

src/workflow-executor.ts

@@ -41,13 +41,15 @@ const SAFETY_CONSTRAINTS = `
 ## CRITICAL CONSTRAINTS — DO NOT VIOLATE
 
 - DO NOT run git commit, git push, or git reset under any circumstances.
+- DO NOT run svn commit, svn switch, svn update, svn relocate, or svn revert under any circumstances.
+- DO NOT modify .svn metadata directories or files.
 - DO NOT rewrite git history or delete branches.
 - DO NOT create or modify files outside the scope listed above.
 - Exception: a Scope Remediation prompt may authorize removing or restoring only the exact out-of-scope paths it lists.
 - Put all temporary files in an OS temporary directory outside the repository (for example, one created with mktemp).
 - If you accidentally create a temporary repository file, remove only that artifact before exiting.
 - SQLite cleanup must include the database and its -wal, -shm, and -journal sidecars.
-- Before exiting, inspect git status --porcelain --untracked-files=all and leave no artifacts outside the allowed scope.
+- Before exiting, inspect git status --porcelain --untracked-files=all (or svn status) and leave no artifacts outside the allowed scope.
 - You may read, edit, and test code, but never commit or push changes.
 - If you encounter an error you cannot resolve, stop and report it clearly.
 `.trimStart();