docs: hand off context snapshots and next-message permission staging

docs/协作/evidence/context-next-permission-01/context.txt

@@ -0,0 +1,2 @@
+context-usage-regression: latest, previous, active-run, summary identity and failure cases passed
+context-usage persistence: offline, shutdown, identity races, usage preservation, category provenance passed

docs/协作/evidence/context-next-permission-01/host-isolation.txt

@@ -0,0 +1 @@
+PASS offline real-host permission isolation: pending approval unchanged, no active setPolicy, next turn updated, queued mode retained, sendNow mismatch preserved without preparation effects

docs/协作/evidence/context-next-permission-01/permission-ui.txt

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+Next-send permission labels and enabled/disabled static rendering passed

docs/协作/evidence/context-next-permission-01/request.txt

@@ -0,0 +1,12 @@
+{
+  "result": "PASS",
+  "tests": [
+    "serial model writes + frozen active turn",
+    "send failure retry",
+    "late result/event session isolation",
+    "draft settings during first session creation",
+    "permission snapshots both directions + save rollback + session isolation + plan/ask",
+    "permission captured before later toggle",
+    "nextRequestSettings whitelist"
+  ]
+}