feat(effort): session default high, env-var warning, live effort in statusline

hooks/session-start.sh

@@ -107,6 +107,12 @@ fi
 REPO_DIR="${_repo_dir:-}"
 unset _claude_real _repo_dir
 
+# Effort tiering (BDR-NEXT): this env var beats every skill/agent `effort:` pin.
+EFFORT_WARN=""
+if [ -n "${CLAUDE_CODE_EFFORT_LEVEL:-}" ]; then
+  EFFORT_WARN="⚠️  CLAUDE_CODE_EFFORT_LEVEL=${CLAUDE_CODE_EFFORT_LEVEL} set: skill/agent effort pins ignored"
+fi
+
 # Detect plan and set passive token budget
 PLAN=$(detect_plan 2>/dev/null || echo "pro")
 case "$PLAN" in
@@ -253,5 +259,6 @@ unset _remote_ver REPO_DIR
 echo "│  💡 /plugin-check  before starting a new project  │"
 echo "│  🩺 make doctor  full diagnostic                  │"
 echo "└───────────────────────────────────────────────────┘"
+[ -n "$EFFORT_WARN" ] && printf '%s\n' "$EFFORT_WARN"
 echo ""
 unset TOKEN_WARN

hooks/statusline.sh

@@ -33,13 +33,14 @@ if [ -z "$PROFILE" ] || [ "$PROFILE" = "none" ]; then
   PROFILE="$DEFAULT_PROFILE"
 fi
 
-# Effort level from settings.json (.effortLevel — set by /effort or manual edit).
-# settings.json is the source-of-truth, symlinked into ~/.claude/settings.json.
-EFFORT="?"
-if [ -f "$REPO/settings.json" ]; then
+# Effort level: the live value when the harness exports it (skill/agent
+# `effort:` shifts included, BDR-NEXT), else the persisted settings.json key
+# (.effortLevel — set by /effort or manual edit; symlinked into ~/.claude).
+EFFORT="${CLAUDE_EFFORT:-}"
+if [ -z "$EFFORT" ] && [ -f "$REPO/settings.json" ]; then
   EFFORT=$(jq -r '.effortLevel // "?"' "$REPO/settings.json" 2>/dev/null)
-  [ -z "$EFFORT" ] && EFFORT="?"
 fi
+[ -z "$EFFORT" ] && EFFORT="?"
 
 # Session duration (from total_duration_ms)
 DURATION_MS=$(echo "$INPUT" | jq -r \