base-bash-libs v1.3.0

Fixed

• Hardened arg_parse option specifications against duplicate, empty, and
  unreachable tokens, and added repeatable value options with ordered,
  caller-owned indexed-array outputs.

• Hardened file-section marker validation, preserved symlink targets during
  atomic updates, and treated option-like target paths literally.

• Made GitHub API failure capture safe under set -e, accepted canonical SSH
  GitHub remotes, and separated submodule diagnostics from pull logs while
  unregistering eagerly removed Git temp files.

• Added canonical git_* names for generic branch, worktree, default-branch,
  and remote helpers.

• Made fallback timeouts terminate descendant processes when a command is
  launched in its own process group.

• Isolated pre-existing EXIT trap control flow so return or exit cannot skip
  registered cleanup hooks and paths.

• Normalized decimal integer inputs before arithmetic validation and rejected
  inverted argument or range bounds.

• Stopped wrapper-option filtering at the -- argument terminator and kept
  launcher runtime-filter state local to each script invocation.

• Preserved caller OPTIND, maintained batch prepend order in add_to_path, and
  treated option-like paths literally in safe_touch.

• Hardened named-output helpers across std, string, list, arg, git, and GitHub
  libraries against caller variable names that collide with helper internals.

• Rejected readonly caller-owned output variables before helper side effects.

• Aligned standards and stdlib documentation with the current sourceable
  library surface and standalone checkout path.

• Added public associative-array assertions and moved arg_parse caller-owned
  map validation onto the public assertion API.

• Added cleanup path unregister support and used it for eager temp cleanup.

• Made gh_run report failed GitHub CLI commands even when callers enable
  set -e, and preserved argument boundaries in GitHub command failure logs.

• Documented and tested str_split trailing-separator behavior.

• Hardened GitHub helper pass-by-name outputs against internal variable
  shadowing, added a non-optional gh_infer_repo_from_origin error message,
  and deduplicated worktree parsing loops.

• Kept gh_list_remote_branches from leaking its internal SHA loop variable
  into caller scope.

• Routed gh_api_with_retry retry sleeps through the stdlib sleep helper so
  shell sleep aliases or functions cannot shadow retry delays.

• Made arg_parse publish output arrays only after a parse succeeds, leaving
  caller-owned outputs unchanged on late parse failures.

• Kept the warning-level ShellCheck profile clean for file section marker-count
  validation.

• Reused shared marker validation inside update_file_section.

Removed

• Removed the temporary generic gh_* branch, worktree, upstream, merge,
  default-branch, and remote helper names after Base migrated to git_*.