stage-7: demo polish — mesh-aware demo command, current README, run-sheet

psyc demo now closes with cockpit links pointing at the Worker Mesh and
reports whether the live model server is up. README rewritten to current
state — Worker Mesh, inference server, model-in-operation, the three
services, accurate code layout. Adds docs/demo.md, a one-page run-sheet.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/psyc/cli.py

@@ -8,6 +8,7 @@ import typer
 import uvicorn
 
 from psyc import db, log
+from psyc.cockpit import inference
 from psyc.lines import classify, courier, route, scout, seal, train
 from psyc.lines import map as map_line
 from psyc.models import Outcome
@@ -315,8 +316,15 @@ def demo() -> None:
     for b in blocked:
         typer.echo(f"      ⊘ {b.destination_name}: {b.reason}")
     typer.echo("")
-    typer.echo(f"inspect: http://127.0.0.1:8767/cases/{case.case_id}")
-    typer.echo(f"ledger:  http://127.0.0.1:8767/ledger")
+    typer.echo("── see it in the cockpit ──")
+    typer.echo(f"  Worker Mesh:  http://127.0.0.1:8767/cases/{case.case_id}/journey")
+    typer.echo(f"  Case detail:  http://127.0.0.1:8767/cases/{case.case_id}")
+    typer.echo(f"  Ledger:       http://127.0.0.1:8767/ledger")
+    adapter = inference.server_adapter()
+    if adapter:
+        typer.echo(f"  Live model:   up ({adapter}) — the Classifier bot shows its verdict")
+    else:
+        typer.echo("  Live model:   inference server offline — Classifier bot falls back to rules")
 
 
 @app.command("serve")