Final archival release for QST as an agent-ready research prototype.

This release preserves QST as a typed, canonical strategy-record system for research, review, coverage measurement, and agent handoff.

Highlights:

• Typed GKR records on qst-ir/0.4 and qst-canonical/0.4
• Deterministic validate / hash / canonicalize workflows
• Token surface governance and conformance coverage
• Coverage Frontier v0.3 matrix, report, dogfood set, and publication gate
• Active Stage 3C agent prompt pack and final handoff documentation
• Qlib partial workflow adapter proof via qst adapter qlib import

Qlib adapter boundary:

• Imports selected Qlib workflow YAML into candidate QST record-layer GKR and coverage JSON
• Does not import Qlib
• Does not run qrun
• Does not train models or run inference
• Does not execute backtests
• Does not connect to brokers or exchanges
• Does not claim lossless Qlib conversion

Not included:

• live trading
• broker or exchange integration
• production execution
• full backtesting
• Qlib runtime replacement
• profitability claims

Primary tag commit: 082e3b9a6c61934eb8cc106d4fd4bddccd80bbc2.

Note: main also includes a post-tag README polish commit (284baef304ce0ed785182635a4701895144a2673) for a cleaner project landing page. The archival release itself remains anchored to the final handoff tag.

Historical construction, acceptance, and cleanline records externalized before Stage R2 public product tree reset.