Bring the generic audio/text import path to parity with the file-importer path on byte-hash duplicate detection, and make collisions catchable in a batch loop. - Re-importing the same audio/text bytes is detected as a duplicate before the timestamp-detection LLM call, printing the same "already imported" message the file importers give; --force still re-imports. - import_one() directory collisions raise a catchable FileExistsError instead of SystemExit; the human `sol import` CLI still surfaces the same message and exit code 1 via main()'s wrapper. - Successful audio/text imports now write a dedup manifest.json with correct days_affected for the YYYYMMDD/stream/segment/file layout. - write_manifest now records import_id (it already took the param) and accepts an optional days_affected to avoid path-derivation across two layouts. - detect_created() no longer writes gemini_debug_* files to /tmp. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>