Backport engine-side Julia SDK changes

[comnik]

Summary

Backports several engine-side changes to the Julia SDK's properties.jl and adds comprehensive test coverage:

• read_lqp / read_bin (from RelationalAI/raicode#27597): Replaces the single read_transaction function with read_lqp (parses text .lqp files via the Parser) and read_bin (decodes binary protobuf files). This allows query_lqp on the engine side to dispatch based on file extension.

• collect_demanded_relations (from RelationalAI/raicode#27172, RelationalAI/raicode#27613): Adds collect_demanded_relations(epoch) and _collect_read_ids! helpers that collect all relation IDs demanded by an epoch's reads (Demand, Output, Abort, Export). The Export handler dispatches on csv_config vs iceberg_config (incorporating the fix from #27613).

• global_ids tests: Adds test coverage for all branches of global_ids (Def, Constraint, EDB, CSVData, IcebergData), which was previously untested.

Test plan

• read_lqp: reads a .lqp file and produces a valid Transaction
• read_bin: reads a .bin file and produces a valid Transaction
• read_lqp and read_bin agree on all matching test file pairs
• global_ids covers Def, Constraint, EDB, CSVData, IcebergData, and Declaration→Data routing
• collect_demanded_relations covers empty epochs, all read types, deduplication, CSV export columns, Iceberg export table_def, and empty export config
• Full properties test suite passes (120 assertions across 12 test items)

🤖 Generated with Claude Code

[hbarthels]

Looks good!