feat: integration follow-ups 1-5 — unified orchestration pipeline

[AdaWorldAPI]

Addresses all 5 follow-ups from .claude/knowledge/cam-pq-unified-pipeline.md:

#1 Wire register_cam_udfs in execute_with_context

• CypherQuery::with_cam_codebook(codebook) builder method
• execute_with_context auto-registers cam_distance + cam_heel_distance UDFs when codebook is set
• One-line unblock for SQL/Cypher CAM-PQ queries

#2 Migrate cam_pq_calibrate output to Lance schema

• codebook_to_lance() in lance-graph/src/cam_pq/storage.rs
• Converts (codebook, fingerprints) -> (vectors_batch, codebook_batch)
• Arrow RecordBatches ready for Lance write; bridges bgz-tensor's raw calibration output to the canonical storage format

#3 impl OrchestrationBridge for codec research (nd.* step-types)

• codec_bridge.rs: CodecResearchBridge owns StepDomain::Ndarray
• nd.tensors / nd.calibrate / nd.probe dispatch via codec_research
• Parses args from step.reasoning as WireRequest JSON
• Complements planner's lg.* bridge

#4 Generic OrchestrationBridge routing endpoint

• POST /v1/shader/route — accepts WireUnifiedStep JSON
• Composed bridge: tries CodecResearchBridge first (nd.), falls through to PlannerAwareness (lg.) if DomainUnavailable
• planner_bridge.rs preserved as typed convenience (rich responses)
• Both patterns coexist: generic route + typed Wire DTOs

#5 WireUnifiedStep + WireStepResult DTOs

• Generic step envelope: {step_id, step_type, reasoning}
• Generic result: {step_id, step_type, status, reasoning, confidence}
• POST /v1/shader/route uses these; per-op endpoints stay for convenience with their richer typed responses

All 5 follow-ups delivered in one commit. 46/46 shader-driver tests pass. lance-graph compiles clean.

https://claude.ai/code/session_01SbYsmmbPf9YQuYbHZN52Zh