The TTP worker entry moved out of decnet/cli/workers.py into its own
module so the TTP CLI surface (worker + admin verbs) is colocated,
mirroring decnet/cli/canary.py / webhook.py / swarm.py.
- New `decnet/cli/ttp.py` with `decnet ttp` (worker, ExecStart-stable
for decnet-ttp.service) and `decnet ttp-backfill --since-days N`.
- `decnet ttp-backfill` walks Attacker.commands and CanaryTrigger
history, dispatches each row through the live CompositeTagger,
persists tags via repo.insert_tags (idempotent INSERT OR IGNORE).
--dry-run / --source command|canary|all / --batch-size supported.
- Backfill deliberately bypasses bus publish — historical replay
must not re-trigger SIEM/webhook fan-out per TTP_TAGGING.md
§"Bus topics" loop-prevention invariant.
- Added `iter_attacker_commands_since` / `iter_canary_triggers_since`
read-only iterators on TTPMixin + abstract bindings on
BaseRepository.
- Master-only via gating; both `ttp` and `ttp-backfill` listed in
MASTER_ONLY_COMMANDS.