Implements the broad, read-only schema-backed scan for dot kde diff:
walks every (rcfile, group, key) reachable through the kcfg mapping
table, compares live values against their schema-declared defaults,
and reports each mismatch tagged declared or undeclared. Never writes.
Also fixes dot kde completions, which only ever offered save/help —
apply (added in a prior task) and diff were both missing.
Introduces the dot kde subcommand family (fish dispatcher plus a Python
helper under commands/kde/), a flat identifier=value manifest, and
dot kde save in both its explicit-identifier and no-argument refresh
modes. Settings resolve to KDE's KConfigXT schema-backed mechanism via a
(rcfile -> [kcfg files]) mapping table auto-derived by scanning the
system schema directory (overridable via DOT_KDE_KCFG_DIR), plus a
hand-maintained exceptions list for schemas that only declare their
target rc file at runtime. Also wires tab-completion for dot kde save
identifiers, sourced live from that same mapping table.
dotcli is my utility script for everything dotfiles.
A bootstrap command is included in the README.
A test suite and the necessary scaffolding for extending
dotcli is also included.
