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

nisse-dev/src/nisse_dev/state.py

@@ -5,8 +5,8 @@ import sqlite3
 from collections.abc import Mapping
 from dataclasses import dataclass
 
-from nisse_core import state
-from nisse_core.state import Migration, utc_now
+from nisse_core.state import store as state
+from nisse_core.state.store import Migration, utc_now
 
 _VM_BLOCKS = """
     CREATE TABLE vm_blocks (
@@ -48,7 +48,7 @@ class StateStore(state.StateStore):
         "toolchain",  # the toolchain step (D3): the driver's model, apart
         "memory",  # the memory pass at an item's close (L6.4), apart too
     }
-    # What each role is shown of the others' work (``nisse_core.views``).
+    # What each role is shown of the others' work (``nisse_core.log.views``).
     SHOWN: Mapping[str, Mapping[str, str]] = {
         "driver": {"helper": "report"},
         "helper": {"driver": "narrate"},