Remove dead code and fix stale comments in filters.py

- Remove _filter_number() — defined but never called; take _FILTER_INPUT_CLASS
  with it since it was only used there.
- Remove the isinstance(value/excluded, str) single-string guards in
  _filter_get_choice — JS always emits arrays, this was backward-compat
  dead code.
- Remove identity-copy list comprehensions in PurchaseFilterBar; pass
  Purchase.TYPES and Purchase.OWNERSHIP_TYPES directly.
- Fix stale section comment that said model fields "resolve selected ids
  to labels" — they now use labels embedded in the filter JSON.
- Drop the now-unused escape import.

https://claude.ai/code/session_01EyAJcMoDktLrY9tSbdHViA

common/components/filters.py

@@ -3,7 +3,6 @@
 from typing import NamedTuple
 
 from django.db import models
-from django.utils.html import escape
 from django.utils.safestring import SafeText, mark_safe
 
 from common.components.core import Component
@@ -34,13 +33,6 @@ class RangeValues(NamedTuple):
 _FILTER_LABEL_CLASS = "text-xs font-medium text-body uppercase tracking-wide"
 
 
-_FILTER_INPUT_CLASS = (
-    "block w-full rounded-base border border-default-medium "
-    "bg-neutral-secondary-medium text-sm text-heading p-2 "
-    "focus:ring-brand focus:border-brand"
-)
-
-
 _FILTER_CHECKBOX_CLASS = (
     "rounded border-default-medium bg-neutral-secondary-medium "
     "text-brand focus:ring-brand"
@@ -71,17 +63,10 @@ def _filter_get_choice(existing: dict, field: str) -> FilterChoice:
     raw = existing.get(field, {})
     if not isinstance(raw, dict):
         return FilterChoice([], [], "")
-    value = raw.get("value", [])
-    excluded = raw.get("excludes", [])
-    modifier = raw.get("modifier", "")
-    if isinstance(value, str):
-        value = [value]
-    if isinstance(excluded, str):
-        excluded = [excluded]
     return FilterChoice(
-        selected=_extract_labeled(value or []),
-        excluded=_extract_labeled(excluded or []),
-        modifier=modifier or "",
+        selected=_extract_labeled(raw.get("value") or []),
+        excluded=_extract_labeled(raw.get("excludes") or []),
+        modifier=raw.get("modifier") or "",
     )
 
 
@@ -103,8 +88,8 @@ def _parse_bool(existing: dict, key: str) -> bool:
 
 # ── FilterSelect adapters ────────────────────────────────────────────────────
 # Each list filter is a FilterSelect. Enum fields pre-render their small, fixed
-# option set; model-backed fields fetch from a search endpoint and only resolve
-# the currently-selected ids to labels for their pills.
+# option set; model-backed fields fetch from a search endpoint on demand, with
+# labels embedded in the filter JSON so pills render without a DB round-trip.
 
 _FILTER_PREFETCH = 20
 
@@ -181,23 +166,6 @@ def _filter_field(label: str, widget) -> SafeText:
     )
 
 
-def _filter_number(label, name, value="", placeholder="") -> SafeText:
-    return _filter_field(
-        label,
-        Component(
-            tag_name="input",
-            attributes=[
-                ("type", "number"),
-                ("name", escape(name)),
-                ("id", escape(name)),
-                ("value", escape(value)),
-                ("placeholder", escape(placeholder)),
-                ("class", _FILTER_INPUT_CLASS),
-            ],
-        ),
-    )
-
-
 def _filter_checkbox(name: str, label: str, checked: bool) -> SafeText:
     return Label(
         attributes=[("class", "flex items-center gap-2 text-sm text-heading")],
@@ -806,8 +774,8 @@ def PurchaseFilterBar(
     """Collapsible filter bar for the Purchase list."""
     from games.models import Purchase
 
-    type_options = [(value, label) for value, label in Purchase.TYPES]
-    ownership_options = [(value, label) for value, label in Purchase.OWNERSHIP_TYPES]
+    type_options = Purchase.TYPES
+    ownership_options = Purchase.OWNERSHIP_TYPES
     existing = _filter_parse(filter_json)
     game_choice = _filter_get_choice(existing, "games")
     platform_choice = _filter_get_choice(existing, "platform")