fix(audit): address /code-review findings

- scheduler _run_changed: count a run as "changed" only on a truthy NUMERIC
  value — status-string no-op dicts like {"skipped":"disabled"} (Plex off, the
  default) or {"skipped":"no demo account"} were flooding the trail every interval.
- audit.record: truncate target_id to the column width (128) like summary[:255],
  so an over-long target (e.g. a 128+ char demo email) can't abort the mutation
  the audit row is committed alongside.
- config set/reset: redact URL userinfo (user:pass@) from logged non-secret
  values — a proxy setting can embed credentials that shouldn't land in the trail.
- config set: skip the audit row when a non-secret value didn't actually change
  (no-op re-save shouldn't add noise); secrets are write-only so always logged.
- audit page title (pageMeta): add the missing "audit" case so the browser tab
  reads "Audit log · Siftlode" instead of falling back to "Feed".

backend/app/audit.py

@@ -64,7 +64,9 @@ def record(
             actor_id=actor_id,
             action=action,
             target_type=target_type,
-            target_id=None if target_id is None else str(target_id),
+            # Truncate to the column widths so an over-long target/summary can never abort the
+            # mutation this row is committed alongside (an audit row must not break what it observes).
+            target_id=None if target_id is None else str(target_id)[:128],
             summary=(summary or None) and summary[:255],
             before=before,
             after=after,

backend/app/routes/config.py

@@ -1,5 +1,7 @@
 """Admin Configuration page API: read/edit the DB-overridable operational settings defined in
 app.sysconfig. Secret values (e.g. SMTP password) are write-only — never returned."""
+import re
+
 from fastapi import APIRouter, Depends, HTTPException
 from sqlalchemy.orm import Session
 
@@ -13,6 +15,15 @@ from app.routes.admin import admin_user
 
 router = APIRouter(prefix="/api/admin/config", tags=["admin"])
 
+# Strip URL userinfo (user:pass@) so a non-secret setting that happens to embed credentials —
+# e.g. an authenticated egress proxy http://user:pass@host:port — never lands plaintext in the
+# audit trail. Non-secret values are shown live in the UI, but the log shouldn't retain creds.
+_URL_USERINFO = re.compile(r"(://)[^/@\s]+@")
+
+
+def _redact(v):
+    return _URL_USERINFO.sub(r"\1***@", v) if isinstance(v, str) else v
+
 
 @router.get("")
 def get_config(_: User = Depends(admin_user), db: Session = Depends(get_db)) -> dict:
@@ -41,13 +52,17 @@ def set_config(
         sysconfig.set_value(db, key, payload["value"])
     except (TypeError, ValueError) as exc:
         raise HTTPException(status_code=400, detail=str(exc) or "Invalid value")
-    # Never log a secret's value — only that it was changed, by whom.
+    # Never log a secret's value — only that it was changed, by whom. Non-secret values are logged
+    # but with URL credentials redacted (a proxy/URL setting can embed user:pass). Skip the row when
+    # a non-secret value didn't actually change (a no-op re-save shouldn't add trail noise); secrets
+    # are write-only so we can't compare — always log.
     new = None if s.secret else sysconfig.get(db, key)
+    if s.secret or new != old:
         audit.record(
             db, admin.id, AuditAction.CONFIG_SET, target_type="config", target_id=key,
-        summary=f"{key} = (secret updated)" if s.secret else f"{key} = {new}",
+            summary=f"{key} = (secret updated)" if s.secret else f"{key} = {_redact(new)}",
-        before=None if s.secret else {"value": old},
+            before=None if s.secret else {"value": _redact(old)},
-        after=None if s.secret else {"value": new},
+            after=None if s.secret else {"value": _redact(new)},
         )
         db.commit()
     return sysconfig.describe(db)
@@ -67,7 +82,7 @@ def reset_config(
     audit.record(
         db, admin.id, AuditAction.CONFIG_RESET, target_type="config", target_id=key,
         summary=f"{key} → default",
-        before=None if s.secret else {"value": old},
+        before=None if s.secret else {"value": _redact(old)},
     )
     db.commit()
     return sysconfig.describe(db)

backend/app/scheduler.py

@@ -130,11 +130,14 @@ def _notify_done(db, actor_id: int, job_id: str, status: str, summary: str | Non
 
 
 def _run_changed(result) -> bool:
-    """Did an automatic job run actually do something worth an audit row? (No-op polls don't.)"""
+    """Did an automatic job run actually do something worth an audit row? (No-op polls don't.)
+    A "change" = a truthy NUMERIC count; status-string dicts like {"skipped": "disabled"} (Plex
+    off — the default) or {"skipped": "no demo account"} are no-ops, not changes, so they don't
+    flood the trail every interval."""
     if result is None:
         return False
     if isinstance(result, dict):
-        return any(bool(v) for v in result.values())
+        return any(isinstance(v, (int, float)) and v for v in result.values())
     if isinstance(result, (int, float)):
         return result != 0
     return bool(result)

frontend/src/lib/pageMeta.ts

@@ -26,6 +26,8 @@ export function pageTitleKey(page: Page): string {
       return "header.configuration";
     case "users":
       return "header.users";
+    case "audit":
+      return "audit.title";
     case "settings":
       return "settings.title";
     default: