Records each documented function's manual category in its own header, so
Section 5 can later be generated from source instead of hand-maintained
alongside it. Values reproduce the current grouping in
docs/manual/05-functions/ exactly; no documentation changes meaning here.
Four functions are skipped because they have no header at all yet
(branch, fc, gitup, sudo-toggle); they get one in the merge that follows.
Replace all ad-hoc inline comments between license headers and function
declarations with consistent SYNOPSIS / DESCRIPTION / ARGUMENTS / RETURNS /
EXAMPLE blocks across all 99 project-owned functions/ files. No executable
logic, variable names, or exit codes were modified.
Completes Task #6 from AGENTS.md (Retroactive Function Documentation
Standardization).
cdi was documented and expected to work as an interactive zoxide
directory picker but was never defined as a function, causing it
to silently fail. Wraps zi so completions are inherited correctly.