fix: port continuous-learning observer fixes

Ports continuous-learning observer signal, storage, remote normalization, and v1 deprecation fixes onto current main.

skills/continuous-learning-v2/scripts/migrate-homunculus.sh

@@ -0,0 +1,62 @@
+#!/usr/bin/env bash
+# One-shot migration from the legacy Claude config tree into the
+# continuous-learning-v2 data directory.
+set -euo pipefail
+
+OLD="${HOME}/.claude/homunculus"
+
+# shellcheck disable=SC1091
+. "$(dirname "$0")/lib/homunculus-dir.sh"
+NEW="$(_ecc_resolve_homunculus_dir)"
+
+if [ "$NEW" = "$OLD" ]; then
+  echo "Resolved destination equals source ($OLD); nothing to migrate."
+  exit 0
+fi
+
+if [ ! -d "$OLD" ]; then
+  echo "Nothing to migrate (no $OLD)."
+  exit 0
+fi
+
+if command -v pgrep >/dev/null 2>&1; then
+  if pgrep -f "${HOME}.*observer-loop\\.sh" >/dev/null 2>&1; then
+    echo "Refusing to migrate: observer-loop.sh is running." >&2
+    echo "Exit all Claude Code sessions, then re-run." >&2
+    exit 1
+  fi
+else
+  echo "Warning: pgrep not available; skipping running-observer check." >&2
+fi
+
+mkdir -p "$(dirname "$NEW")"
+
+if [ ! -d "$NEW" ]; then
+  mv "$OLD" "$NEW"
+  echo "Moved $OLD -> $NEW"
+elif [ -z "$(ls -A "$NEW" 2>/dev/null || true)" ]; then
+  rmdir "$NEW"
+  mv "$OLD" "$NEW"
+  echo "Moved $OLD -> $NEW (replaced empty destination)"
+else
+  old_count="$(find "$OLD" -type f 2>/dev/null | wc -l | tr -d ' ')"
+  new_count="$(find "$NEW" -type f 2>/dev/null | wc -l | tr -d ' ')"
+  echo "Refusing to migrate: both paths exist with content." >&2
+  echo "  Old: $OLD ($old_count files)" >&2
+  echo "  New: $NEW ($new_count files)" >&2
+  echo "Resolve manually, then re-run." >&2
+  exit 1
+fi
+
+settings="${HOME}/.claude/settings.json"
+if [ -f "$settings" ] && grep -q '"CLV2_CONFIG"' "$settings" 2>/dev/null; then
+  if grep -q '\.claude/homunculus' "$settings" 2>/dev/null; then
+    cat >&2 <<WARN
+
+Advisory: ~/.claude/settings.json still sets CLV2_CONFIG under the old path.
+Update it to: ${NEW}/config.json
+(Not editing settings.json automatically.)
+
+WARN
+  fi
+fi