Task: Bind ores.marketdata entities to profiles; verify zero-diff regen

Survey every ores.marketdata entity against the profile catalogue, rebind matches, regenerate, and require zero additional diff against the pre-rebind checked-in output.

• Every entity discovered via the marketdata catalogue entry is surveyed against all Variability Profiles.
• Every matching entity is rebound and regenerated with zero additional diff versus its pre-rebind checked-in output.
• The market_fixing untracked-file drift is root-caused and fixed as part of reaching zero drift.
• No-match entities are recorded with their actual feature values, not silently dropped.
• Full local build and ctest green after regeneration.

(Implementation strategy. Written when work starts; key decisions are distilled into the parent story's * Decisions at close, but the plan itself stays — it is the historical record of what we did.)

Manual QA scenarios (scaffolded via compass add test_scenario, run through the QA Validation Runner panel) that verify this task. Link new ones here as they're created; the scenario doc itself links back via its "Verifies task" field.

Abandoned at sprint 25 close. Sprint 26 replaces the codegen approaches tried so far with one method: for each module, sync codegen and clear its drift. Sprint 26 opens new, clean stories for each module. This story is not carried forward.