fix(ready): prevent wisps from appearing in bd ready

Add multiple layers of defense against misclassified wisps:
- Importer auto-detects -wisp- pattern and sets ephemeral flag
- GetReadyWork excludes -wisp- IDs via SQL LIKE clause
- Doctor check 26d detects misclassified wisps in JSONL

This addresses recurring issue where wisps with missing ephemeral
flag would pollute bd ready output after JSONL import.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

internal/storage/sqlite/ready.go

@@ -19,6 +19,7 @@ func (s *SQLiteStorage) GetReadyWork(ctx context.Context, filter types.WorkFilte
 	whereClauses := []string{
 		"i.pinned = 0",                             // Exclude pinned issues
 		"(i.ephemeral = 0 OR i.ephemeral IS NULL)", // Exclude wisps
+		"i.id NOT LIKE '%-wisp-%'",                 // Defense in depth: exclude wisp IDs even if ephemeral flag missing
 	}
 	args := []interface{}{}