feat: add backup CLI commands, AI correction/modifier services, and timezone-aware date display

- Add `devplace backups` CLI subcommands (list, run, prune, clear) with job enqueueing and orphan cleanup
- Introduce `BACKUPS_DIR` and `BACKUP_STAGING_DIR` config paths for backup storage
- Implement `schedule_correction` and `schedule_modification` calls in content creation, comment creation, and comment editing flows
- Add `DEFAULT_CORRECTION_PROMPT` and `DEFAULT_MODIFIER_PROMPT` config constants for AI content processing
- Document timezone-aware date display using `local_dt`/`dt_ago` Jinja globals with client-side `Intl` localization
- Update README with AI content correction/modifier support in direct messages via `@ai` inline instructions
- Add `track_action(user["uid"], "vote")` call on upvote in `apply_vote`

devplacepy/routers/tools/deepsearch.py

@@ -20,7 +20,7 @@ from devplacepy.services.jobs.deepsearch.progress import hub
 from devplacepy.services.jobs.deepsearch.service import DeepsearchService
 from devplacepy.services.manager import service_manager
 from devplacepy.templating import templates
-from devplacepy.utils import generate_uid, get_current_user, is_admin, not_found
+from devplacepy.utils import generate_uid, get_current_user, is_admin, not_found, track_action
 
 from ._shared import owner_for
 
@@ -164,6 +164,8 @@ async def deepsearch_run(request: Request, data: Annotated[DeepsearchRunForm, Fo
         metadata={"query": data.query, "depth": data.depth, "max_pages": data.max_pages},
         links=[audit.job(uid)],
     )
+    if owner_kind == "user":
+        track_action(owner_id, "deepsearch")
     return JSONResponse(
         {
             "uid": uid,