Four axes deferred from ADR-0131.G.3 (PR #183):
1. Fractions end-to-end: new _INITIAL_FRACTION_OF_RE extractor handles
`N/M of [a/an] <unit>` shape; _resolve_value already handles N/M arithmetic.
2. Multi-currency: _MONEY_SYMBOL widened to six symbols; _CURRENCY_SYMBOLS table
+ _resolve_currency dispatcher; ¢/€/¥/₱ wired end-to-end. £/pound sterling
deferred to G.3.2 (question extractor's single-token unit slot cannot parse
two-word surface "pounds sterling").
3. Multi-token cardinals: dedicated _MULTI_WORD_CARDINAL_RE extractor (approach a)
delegates to parse_compound_cardinal; avoids greedy unit-slot boundary ambiguity
from widening _VALUE.
4. Word-num-adjective: optional adjective group added to _INITIAL_HAS_RE and
_MULTI_WORD_CARDINAL_RE; closed adjective list identical to _CONJ_OBJECT_RE.
Also fixes six pre-existing G4 type bugs where _resolve_value() result was used
directly as a numeric operand (TypeError: _ResolvedValue is not a number).
Axis lane v1_1: 20/20 solved_correct, 0 wrong, 8/8 refusals, overall_pass=True.
GSM8K probe: 0/50 admission_rate unchanged, admitted_wrong=0 (safety rail intact).
42/42 new tests pass; parent v1 lane (26/26) unaffected.
