filament_id v4.2b: re-mint the Qidi QD_* island (plan v4 SS4)

All 264 QD_* declarations re-derive from their family triples via
--remint Qidi. Only 8 family ids are new: most QIDI-brand products already
carried v3.2-minted ids on older printer series, so the QD-series
declarations converge onto them (QD_0..4_1_1 -> OFKIQO2W "QIDI PLA
Rapido"), and the six Generic families converge onto the shared generic
ids (Generic PLA -> OFDSrzZ8 etc.) by triple math -- no inherits or
compatible_printers changes anywhere.

--update-snapshot retires all 204 QD_* ids with mode-rule successors.
Audit: 204/204 non-null successors, every chain ends at a live id; the
four ids hardcoded in QidiPrinterAgent's non-numeric-series fallback
resolve to the OFL generics (QD_1_0_1 -> OFDSrzZ8, ...). The v4.1 agent
hook translates device-composed QD_* ids through these entries at
runtime, so box behavior is preserved on updated clients.

Known accepted residue (plan v4 SS4): three case/spelling family splits
keep distinct ids for one product line each -- QIDI PC-ABS-FR (series
1-2) vs QIDI PC/ABS-FR (series 3-4) vs Qidi PC-ABS-FR (X-Plus 4), and
QIDI TPU 95A-HF vs Qidi TPU 95A-HF. Renames are ruled out; the ledger's
per-series successors keep each device slot resolving to the right
presets, and a future upstream name unification self-heals through
content addressing.

The code<->ledger lockstep test is now active (un-skipped).

Gates: --check 0; orca_extra_profile_check 0/0; 117 script tests OK
(0 skipped); validator base, -f tree-wide, -v Qidi all exit 0;
libslic3r_tests green; Qidi profile diff is filament_id-value-only.
Qidi.json version bumped.

scripts/tests/test_filament_id.py

@@ -1485,7 +1485,6 @@ class TestRealTree(unittest.TestCase):
     # QidiPrinterAgent::map_filament_type_to_setting_id returns must stay
     # retired ledger keys whose chains end at a live preset id, because the
     # agent resolves them through resolve_filament_id_succession() at runtime.
-    @unittest.skip("enable with plan v4.2: QD_* ids are not retired yet")
     def test_qidi_agent_fallback_ids_resolve_through_ledger(self):
         cpp = os.path.join(REPO_ROOT, "src", "slic3r", "Utils", "QidiPrinterAgent.cpp")
         with open(cpp, encoding="utf-8") as f: