fix mulitple bugs

public/i18n/locale-en.json

@@ -17,6 +17,7 @@
     "repository_not_accessible": "This repository is currently not accessible.",
     "repo_is_updating": "Anonymous GitHub is still processing the repository, it can take several minutes.",
     "invalid_repo": "The provided repository is not valid.",
+    "invalid_source_repository": "The repository source name is invalid; expected the form 'owner/name'.",
     "repoId_not_defined": "A repository ID must be provided.",
     "repoUrl_not_defined": "The repository URL needs to be defined.",
     "repoId_already_used": "The repository ID is already used.",
@@ -25,6 +26,8 @@
     "branch_not_specified": "The branch is not specified.",
     "branch_not_found": "The branch of the repository cannot be found.",
     "commit_not_specified": "A commit must be specified.",
+    "commit_not_found": "The configured commit no longer exists in the source repository. It may have been force-pushed, rebased, or removed.",
+    "repo_renamed": "The source repository appears to have been renamed or moved on GitHub. Please refresh and try again — the cached name has been updated.",
     "invalid_commit_format": "The commit hash format is invalid. It must be a hexadecimal string.",
     "pull_request_not_found": "The requested pull request could not be found.",
     "pull_request_expired": "This pull request has expired and is no longer available.",