WebUI Architecture Cleanup (#19541)

* webui: architecture foundation (non-MCP core refactors)

* chore: update webui build output

tools/server/webui/src/lib/constants/settings-fields.ts

@@ -0,0 +1,33 @@
+/**
+ * List of all numeric fields in settings configuration.
+ * These fields will be converted from strings to numbers during save.
+ */
+export const NUMERIC_FIELDS = [
+	'temperature',
+	'top_k',
+	'top_p',
+	'min_p',
+	'max_tokens',
+	'pasteLongTextToFileLen',
+	'dynatemp_range',
+	'dynatemp_exponent',
+	'typ_p',
+	'xtc_probability',
+	'xtc_threshold',
+	'repeat_last_n',
+	'repeat_penalty',
+	'presence_penalty',
+	'frequency_penalty',
+	'dry_multiplier',
+	'dry_base',
+	'dry_allowed_length',
+	'dry_penalty_last_n',
+	'agenticMaxTurns',
+	'agenticMaxToolPreviewLines'
+] as const;
+
+/**
+ * Fields that must be positive integers (>= 1).
+ * These will be clamped to minimum 1 and rounded during save.
+ */
+export const POSITIVE_INTEGER_FIELDS = ['agenticMaxTurns', 'agenticMaxToolPreviewLines'] as const;