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/lib/homunculus-dir.sh

@@ -0,0 +1,31 @@
+#!/usr/bin/env bash
+# Shared continuous-learning-v2 data-directory resolver.
+#
+# Resolution precedence:
+#   1. CLV2_HOMUNCULUS_DIR, when absolute
+#   2. XDG_DATA_HOME/ecc-homunculus, when XDG_DATA_HOME is absolute
+#   3. HOME/.local/share/ecc-homunculus
+
+_ecc_resolve_homunculus_dir() {
+  if [ -n "${CLV2_HOMUNCULUS_DIR:-}" ]; then
+    case "$CLV2_HOMUNCULUS_DIR" in
+      /*) printf '%s\n' "$CLV2_HOMUNCULUS_DIR"; return 0 ;;
+      *) printf '[ecc] CLV2_HOMUNCULUS_DIR=%s is not absolute; ignoring\n' "$CLV2_HOMUNCULUS_DIR" >&2 ;;
+    esac
+  fi
+
+  if [ -n "${XDG_DATA_HOME:-}" ]; then
+    case "$XDG_DATA_HOME" in
+      /*) printf '%s/ecc-homunculus\n' "$XDG_DATA_HOME"; return 0 ;;
+      *) printf '[ecc] XDG_DATA_HOME=%s is not absolute; ignoring\n' "$XDG_DATA_HOME" >&2 ;;
+    esac
+  fi
+
+  case "${HOME:-}" in
+    /*) printf '%s/.local/share/ecc-homunculus\n' "$HOME" ;;
+    *)
+      printf '[ecc] HOME=%s is not absolute; cannot resolve homunculus dir\n' "${HOME:-}" >&2
+      return 1
+      ;;
+  esac
+}