fix(cli): show follow-up suggestions for legacy/unknown interaction modes

The suggestions gate only matched the literal strings engaging/enhance,
but the loop treats every mode except off/verbose as engaging - so
configs with a legacy or invalid interaction_mode (e.g. "all", which
some configs carry from the tool_progress domain) silently suppressed
the block while otherwise behaving as engaging. Gate on exclusion
(only verbose/off suppress), matching the loop's interpretation.

Author: jkyberneees

cmd/odek/proactive.go

@@ -62,13 +62,15 @@ const maxFollowUpSuggestions = 3
 
 // printFollowUpSuggestions prints a compact block of follow-up suggestions
 // after a completed turn. Presentation-only: the block is written to w
-// (never appended to the agent response), and only in engaging/enhance
-// interaction modes — verbose and off stay machine-clean.
+// (never appended to the agent response), and suppressed only in verbose and
+// off modes, which stay machine-clean. Anything else — including empty,
+// unknown, or legacy mode strings — behaves like engaging, matching the
+// loop's own default-engaging interpretation (internal/loop).
 func printFollowUpSuggestions(w io.Writer, mm followUpSuggester, interactionMode string) {
 	if mm == nil {
 		return
 	}
-	if interactionMode != "engaging" && interactionMode != "enhance" {
+	if interactionMode == "verbose" || interactionMode == "off" {
 		return
 	}
 	fmt.Fprint(w, formatFollowUpSuggestions(mm.FollowUpSuggestions()))

cmd/odek/proactive_test.go

@@ -75,6 +75,18 @@ func TestPrintFollowUpSuggestions(t *testing.T) {
 		}
 	})
 
+	t.Run("printed in unknown/legacy mode", func(t *testing.T) {
+		// Unknown or legacy mode strings (e.g. "all", "") behave like
+		// engaging, matching the loop's default-engaging interpretation.
+		for _, mode := range []string{"all", "", "something-else"} {
+			var buf bytes.Buffer
+			printFollowUpSuggestions(&buf, &fakeSuggester{suggestions: sugs}, mode)
+			if buf.Len() == 0 {
+				t.Errorf("expected suggestion block in mode %q", mode)
+			}
+		}
+	})
+
 	t.Run("suppressed in off mode", func(t *testing.T) {
 		var buf bytes.Buffer
 		fs := &fakeSuggester{suggestions: sugs}