refactor(logging): route frontend console calls through the logger

TRACES: | DR-204

484 ungated `console.*` calls across 63 non-test frontend files shipped to
end users with no way to turn them off. Mechanical substitution, no control
flow, error handling or message semantics changed:

  console.log / console.debug -> log.debug
  console.info                -> log.info
  console.warn                -> log.warn
  console.error               -> log.error

Hand-written `"[Scope] …"` prefixes are dropped where the logger's scope
now carries them; scope names that already existed are preserved verbatim
(`[Auth]`, `[VideoPlayer]`, `[PiP]`, …) and inferred from the filename
where a file had none. `src/routes/player/[id]/+page.svelte` keeps its
`NextEpisode` and `AutoPlay` sub-scopes as separate loggers rather than
flattening them into the page scope.

`grep -rn 'console\.' src/` now matches nothing outside the tests and the
facade itself.

src/lib/utils/haptics.ts

@@ -3,6 +3,10 @@
  * Provides tactile feedback for user actions
  */
 
+import { createLogger } from "$lib/utils/logger";
+
+const log = createLogger("Haptics");
+
 type HapticStyle = "light" | "medium" | "heavy" | "success" | "warning" | "error";
 
 /**
@@ -28,7 +32,7 @@ export function haptic(style: HapticStyle = "medium") {
     navigator.vibrate(patterns[style]);
   } catch (error) {
     // Silently fail if vibration is not supported or blocked
-    console.debug("Haptic feedback not available:", error);
+    log.debug("Haptic feedback not available:", error);
   }
 }