Synced from monorepo

Changes:
- Stop hooks for session lifecycle
- Add x.ai/session/state and x.ai/session/import ACP methods
- Deny-and-continue for auto-mode classifier blocks with denial limits
- Drop codebase-upload from dhat soak test
- scheduler_create upsert via task_id; retire one-shot tasks
- Clipboard: copy file fallback + honest toasts for SSH/Apple Terminal
- Polarity-safe syntax colors in minimal mode
- Auto mode classifies unvetted env prefixes instead of hard-prompting
- Add GROK_CLIPBOARD_NO_OSC52 kill switch to force OSC 52 off

crates/codegen/xai-grok-hooks/examples/hooks/bin/stop-verify.sh

@@ -0,0 +1,24 @@
+#!/bin/sh
+# stop-verify.sh — keep the agent working until the build passes.
+#
+# A Stop hook runs when the agent is about to finish its turn. Emitting a
+# block decision feeds the reason back to the model and runs another round;
+# the built-in cap ends the turn after 8 continuations. Set a generous
+# timeout on the hook (see stop-verify.json), since a timed-out hook fails
+# open and lets the agent stop.
+
+INPUT=$(cat)
+
+# Gate only genuine turn ends, not the observe-only session-end fire.
+REASON=$(echo "$INPUT" | grep -o '"reason":"[^"]*"' | sed 's/"reason":"//;s/"$//')
+if [ "$REASON" != "end_turn" ]; then
+  exit 0
+fi
+
+if cargo build --quiet >/dev/null 2>&1; then
+  # Build is green: allow the stop.
+  exit 0
+fi
+
+# Build is red: keep the agent working, with the failure as feedback.
+echo '{"decision":"block","reason":"cargo build failed; fix the errors before finishing."}'

crates/codegen/xai-grok-hooks/examples/hooks/stop-verify.json

@@ -0,0 +1,11 @@
+{
+  "hooks": {
+    "Stop": [
+      {
+        "hooks": [
+          { "type": "command", "command": "bin/stop-verify.sh", "timeout": 300 }
+        ]
+      }
+    ]
+  }
+}