fix(cli): resolve --version namespace collision in eval subcommand

The top-level --version flag (bool) collided with eval's --version argument
(string). Rename the top-level dest to print_version so both coexist.

Also mark Phase 0 exit gate as complete in PROGRESS.md:
- v1 public: 13/13 (100% all metrics)
- holdout: 19/19 (unsealed plaintext, encryption deferred)
- baseline: scaffold with pluggable BaselineModel protocol

core/cli.py

@@ -670,7 +670,7 @@ def build_parser() -> argparse.ArgumentParser:
         epilog=EPILOG,
         formatter_class=argparse.RawDescriptionHelpFormatter,
     )
-    parser.add_argument("--version", action="store_true", help="print package version and exit")
+    parser.add_argument("--version", action="store_true", dest="print_version", help="print package version and exit")
     subparsers = parser.add_subparsers(dest="command", metavar="command")
 
     chat = subparsers.add_parser("chat", help="start the interactive chat REPL")
@@ -796,7 +796,7 @@ def main(argv: Sequence[str] | None = None) -> int:
         if getattr(args, "command", None) != "test":
             parser.error(f"unrecognized arguments: {' '.join(unknown)}")
         args.args = [*(getattr(args, "args", None) or ()), *unknown]
-    if args.version:
+    if args.print_version:
         _print_version()
         return 0
     func = getattr(args, "func", None)

docs/PROGRESS.md

@@ -7,8 +7,9 @@ Tracks completion of the phased plan defined in `docs/capability_roadmap.md`
 
 ## Phase 0 — Benchmark Methodology Lock-in
 
-**Status:** In Progress
+**Status:** Complete
 **Started:** 2026-05-15
+**Completed:** 2026-05-16
 
 - [x] Promote roadmap to ADR-0016
 - [x] Extract `docs/eval_methodology.md` from roadmap Part I
@@ -23,7 +24,7 @@ Tracks completion of the phased plan defined in `docs/capability_roadmap.md`
 - [x] Generalize `core eval <lane>` CLI (dynamic lane discovery)
 - [x] Implement holdout runner scaffold
 - [x] Implement baseline runner scaffold
-- [ ] **Exit gate:** `core eval cognition` runs under new convention with v1 public + holdout + baseline
+- [x] **Exit gate:** `core eval cognition` runs under new convention with v1 public + holdout + baseline
 
 ### Methodology issues discovered (Phase 0 audit)
 
@@ -32,8 +33,11 @@ Tracks completion of the phased plan defined in `docs/capability_roadmap.md`
    stub without appending. Fixed with fallback to tokenizer output.
 2. **Versor drift in multi-turn sessions:** `test_pipeline_preserves_versor_closure`
    reveals that after 3 turns in the same session, "spirit breath" causes
-   `versor_condition = 1.12e-04` (threshold: 1e-6). Pre-existing; not caused by
-   eval restructuring. Needs operator/construction boundary investigation.
+   `versor_condition = 1.12e-04` (threshold: 1e-6). Pre-existing; resolved by
+   strict runtime closure enforcement (always unitize after sandwich product).
+3. **Identity/drive bias shelved:** Premature persona motor and drive bias
+   introduced trajectory drift. Removed in favour of persona-neutral generic
+   runtime; identity returns behind explicit IdentityProfile contract.
 
 ---