nisse-core: group modules into packages by architecture section

A pure move; behaviour unchanged.

- models (L9, L7): llm, catalog, probe, render, render_anthropic, context
- log (L7, L6): canonical, views
- state (L8): store (was state), reconcile, worker, cancel, dump
- knowledge (L10, L6.4): vault, memory
- conversation (L5): transport, matrix
- execution (L13): ssh (was execution), testing
- authority (P3, P4, L4): actions
- gitea, oplog, envfile stay at the top until each gains a second module.

Every import, monkeypatch target, script and doc reference rewritten.

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

tests/integration/test_end_to_end_loop.py

@@ -31,10 +31,10 @@ from e2e_support import (
     task,
 )
 
-from nisse_core.canonical import ActionVerdict
-from nisse_core.execution import SSHHost
+from nisse_core.conversation.transport import InMemoryTransport
+from nisse_core.execution.ssh import SSHHost
 from nisse_core.gitea import GiteaClient, GiteaError
-from nisse_core.transport import InMemoryTransport
+from nisse_core.log.canonical import ActionVerdict
 from nisse_dev.config import AgentConfig, LoopTuning
 from nisse_dev.loop import preflight
 from nisse_dev.loop.build import RunningLoop, build_loop_agent
@@ -71,7 +71,7 @@ def running(
     run = uuid.uuid4().hex[:8]
     stack = contextlib.ExitStack()
     # Kept outside pytest's temp directories, which pytest prunes, so a
-    # failed run's transcript can be read afterwards (nisse_core.dump).
+    # failed run's transcript can be read afterwards (nisse_core.state.dump).
     keep = Path(os.environ.get("NISSE_E2E_RUNS", "/tmp/nisse-e2e-runs")) / run
     keep.mkdir(parents=True, exist_ok=True)
     print(f"\ne2e run {run}: state store in {keep}")