M7.1: extract nisse-core

What isn't the dev agent's moves to nisse-core, unchanged in behaviour,
with its tests: canonical, render, render_anthropic, llm, catalog, probe,
context, views, state, reconcile, worker, cancel, dump, transport, matrix,
execution, testing, vault, memory, oplog, envfile and gitea (whole).

- nisse_core.state.StateStore holds the tables every agent has; an
  agent's subclass adds its tables (version, migrations), roles and
  views. nisse_dev.state.StateStore adds the build VM blocks (v5).
- views.project takes what each role is shown, rather than a fixed table.
- Vault takes the agent's name (agent=), for provenance.
- A test that nisse_core never imports an agent.
- The loop, config, git, delegation, expert, tools and evals stay in
  nisse-dev until nisse-ops has a loop to share.

Docs: the Development Plan marks M7.1 done and notes that Phase 6 waits on
the agent host and Terraform; Architecture Part L names the package.

Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01J5Utyfzw7gF7UhjRDEtjTk

nisse-dev/tests/test_loop_properties.py

@@ -24,8 +24,8 @@ from test_loop_milestones import DON, Forge, call, make_world
 from test_loop_milestones import world as world  # noqa: PLC0414 -- the fixture
 from test_loop_projects import Router
 
-from nisse_dev.cancel import Cancel
-from nisse_dev.canonical import (
+from nisse_core.cancel import Cancel
+from nisse_core.canonical import (
     ActionVerdict,
     AssistantText,
     Fact,
@@ -34,10 +34,15 @@ from nisse_dev.canonical import (
     ToolResult,
     UserMessage,
 )
+from nisse_core.execution import HostUnavailable, SSHHost
+from nisse_core.gitea import Comment, Issue
+from nisse_core.llm import LLMError, RoleMap
+from nisse_core.memory import Memory
+from nisse_core.oplog import OpLog
+from nisse_core.transport import InboundMessage, InMemoryTransport
+from nisse_core.vault import Vault, split_frontmatter
+from nisse_core.worker import InlineWorker
 from nisse_dev.delegation import DELEGATION_INTENT, Caps
-from nisse_dev.execution import HostUnavailable, SSHHost
-from nisse_dev.gitea import Comment, Issue
-from nisse_dev.llm import LLMError, RoleMap
 from nisse_dev.loop.agent import LoopAgent, Project
 from nisse_dev.loop.classifier import ActionClassifier
 from nisse_dev.loop.driver import Driver
@@ -53,12 +58,7 @@ from nisse_dev.loop.items import (
     WAITING,
     loop_of,
 )
-from nisse_dev.memory import Memory
-from nisse_dev.oplog import OpLog
 from nisse_dev.tools import Workspace
-from nisse_dev.transport import InboundMessage, InMemoryTransport
-from nisse_dev.vault import Vault, split_frontmatter
-from nisse_dev.worker import InlineWorker
 
 # How many walks, and from which seed: all 48 by default; CI runs fewer on a
 # PR, from a seed that moves with the run number, so PRs still cover new
@@ -360,7 +360,11 @@ class Walk:
         (vault_root / "notes").mkdir(parents=True, exist_ok=True)
         (vault_root / "notes" / "Ops.md").write_text("the operator's\n")
         self.memory = Memory(
-            Vault(vault_root, {"memory/nisse-dev": "rw", "notes": "ro"}),
+            Vault(
+                vault_root,
+                {"memory/nisse-dev": "rw", "notes": "ro"},
+                agent="nisse-dev",
+            ),
             "memory/nisse-dev",
         )
         real = SSHHost.execute