redefine targeting: 'set' (aliases sticky/switch) is the persistent sticky
default (~/.claude-active); 'target <name> <command>' is a one-shot override that
routes a single command without changing the sticky default. add 'unset' and
'list'. resolution moves to a single target.resolve(one_shot) implementing the
order: one-shot -> sticky-if-exists -> only-session auto -> ambiguous/none do
nothing (never falls through, never injects into a missing session).
grammar.parse now returns ParsedCommand(one_shot, action) and skips optional
leading filler words (config behavior.filler_words: select/use/choose), with a
filler-before-digit still meaning the select command. CLI gains set/unset/list
(switch kept as a set alias). daemon console shows the targeting reason per line.
docs updated; no stale 'target = sticky' wording remains. bump to 0.1.1.
Signed-off-by: disqualifier <dev@disqualifier.me>
