Task: Declare the oresmd coordinates in the models

The oresmd grammar is declared in its models rather than in the generated parser. Each of the twelve quote-type models states, for every query key, its role (identity or coordinate), its value kind and its order; and it states, per quote type, which coordinate keys that type carries. The point bag is removed.

No generated C++ changes in this unit. The point of the unit is that the next unit can generate the parser, the writer and the series identity from a declaration a reviewer can read, instead of from a hand-written visitor.

The findings and the target grammar are recorded in The oresmd URI grammar: silent defaults and the untyped coordinate.

• Every dimension a point=-bearing URI carries is a declared coordinate key.
• Every query key of every quote type is either a declared coordinate or identity, and the generated series identity is the identity keys alone.
• The four volatility families with no quote type of their own gain one: swaption for IR, and an option member for FX, equity and commodity.
• A codegen test walks every point=-bearing URI in the model test tables and fails while any is not expressible as declared keys. It passes at the end of this unit and its check is the record's evidence.
• The generated parser and writer accept and produce exactly what they do today, except that the quote-type enums gain the four new members. No URI that parses today stops parsing.

The twelve quote-type models declare their coordinates, and the generator reads them. Every point-bearing test URI resolves to a quote type that declares what its key carries.

Delivered:

• A * Coordinates table in each of the twelve models, and a coordinates column on every * Quote types row.
• load_org_oresmd_quote_type_model() reads both, and refuses a key declared as a coordinate in one table and another type in the other, or listed by a quote type and declared nowhere.
• test_oresmd_coordinates.py, the declaration check described above.
• Three quote types: ir.swaption, fx.option and equity.option. commodity.option already existed. Each gained a round-trip case, so TEST_COVERAGE_EXEMPT stays empty.
• A generator defect fixed at its source: the * Quote types header of credit_quote_type.org and commodity_quote_type.org declared no notes column while their rows carried one, so the notes text landed in the comment slot and the generated enum documented the key shape where the meaning belonged. The header now declares notes, and the regenerated enums carry the real comments.
• The one hand-written switch the new members reached, default_metric(ir_quote_type), gained its case in ores.cpp.oresmd.projections.org, from which the template is tangled.

Evidence:

Not done here, and unit 3's work: the point field still exists, the parser still reads the old spelling, and the series identity still clears the volatility struct. The corpus import therefore still fails, and the investigation's measurement of that failure stands.

Delivered through PR #2464 and merged as the first half of the story.

What shipped: the twelve quote-type models declare their coordinate dimensions and the keys the old point corresponds to; the identifier holds a typed member per declared coordinate and a smile dimension of its own; the loader reads and cross-checks both tables; three surfaces that had no quote type of their own gained one; and test_oresmd_coordinates.py is the gate.

Verified before the merge: full tree build, full ctest 89 of 89, database recreated, 24 services started, codegen suite 1,049, oresmd core suite 1,940 assertions in 420 cases.

The merge was forced. GitHub was slow, the run was cancelled at the author's request, and the two checks still running (Codegen drift, Codegen sweep) were cancelled rather than waited for. The other twelve had passed. The local verification above covers what no check covers.