fix(filter-builder): id cells showed raw ids; OR mode starved the value menu

Two user-reported builder defects:

1. Id-kind value cells (library/collection/feed/added_by) rendered the
   stored UUIDs in the input box. The menu offered names (s.display)
   and picking stored the id correctly — but the cell bound
   rule.values.join(',') raw. The cell now renders through
   valueCellText: idLabels give the NAMES; typing drafts a name filter
   in idDrafts (the stored values stay ids — the clause matches ids —
   and are updated only by picking). Text/number/days cells are
   unchanged.

2. The value menu ignored the connective: fetchSuggestions always sent
   the sibling rules as the qf constraint, so with "Author contains
   Lewis Carroll" present, flipping to OR still starved the author
   menu down to Lewis Carroll. Under OR the siblings are independent
   alternatives — a new rule's candidates must not be narrowed by
   them. pathUnderAll now checks the edited rule's group path: under
   AND all the way up, siblings constrain as before (helpful
   narrowing); under any OR on the path, NO tree rides and the menu
   browses the whole scope.

Server contract unchanged — the suggest endpoint already treats a
missing qf as an unconstrained browse; the fix is client-side
mode-awareness. Pins: 6 new vitest cases (AND sends siblings, OR sends
none, id label display, draft typing never touches stored ids, pick
toggles + relabels, text passthrough).

templates/filter_builder.templ

@@ -60,7 +60,7 @@ templ FilterBuilderRows(countNoun string) {
 													</template>
 													<template x-if="hasValueCell(row.rule) && (valueArity(row.rule) === 'one' || valueArity(row.rule) === 'many')">
 														<span class="fb-value-cell relative flex items-center gap-1">
-															<input type="text" class="input fb-value" :value="row.rule.values.join(',')" @input.debounce.250ms="setRuleValue(row.path, 0, $el.value)" @focus="openValueMenu(row.key, row.path, row.rule)" :placeholder="fieldIsDays(row.rule.field) ? 'days' : 'value'"/>
+															<input type="text" class="input fb-value" :value="valueCellText(row.path)" @input.debounce.250ms="onValueCellInput(row.path, $el.value)" @focus="openValueMenu(row.key, row.path, row.rule)" :placeholder="fieldIsDays(row.rule.field) ? 'days' : 'value'"/>
 															<template x-if="fieldIsDays(row.rule.field)">
 																<span class="text-xs whitespace-nowrap" style="color: var(--text-secondary)" x-text="'days'"></span>
 															</template>