AI-admin: opp/ned-knapper for å endre provider-prioritet per alias

- Nytt swap-endpoint (POST /api/admin/ai/providers/swap) for atomisk bytte
- Pil opp/ned ved hver provider-rad for å endre fallback-rekkefølge
- Prioritet avgjør hvilken modell LiteLLM prøver først per alias

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

web/src/routes/api/admin/ai/providers/swap/+server.ts

@@ -0,0 +1,46 @@
+import { json, error } from '@sveltejs/kit';
+import type { RequestHandler } from './$types';
+import { sql } from '$lib/server/db';
+
+/** POST — bytt prioritet mellom to providers (atomisk) */
+export const POST: RequestHandler = async ({ request, locals }) => {
+	if (!locals.workspace || !locals.user) error(401);
+
+	const { id_a, id_b } = await request.json();
+	if (!id_a || !id_b) error(400, 'id_a og id_b kreves');
+
+	// Atomisk swap via CTE — unngår UNIQUE-constraint-brudd
+	const rows = await sql`
+		WITH swap AS (
+			SELECT
+				a.id AS id_a, a.priority AS pri_a,
+				b.id AS id_b, b.priority AS pri_b
+			FROM ai_model_providers a, ai_model_providers b
+			WHERE a.id = ${id_a}::uuid AND b.id = ${id_b}::uuid
+			  AND a.alias_id = b.alias_id
+		),
+		update_a AS (
+			UPDATE ai_model_providers SET priority = -1, updated_at = now()
+			WHERE id = (SELECT id_a FROM swap)
+		),
+		update_b AS (
+			UPDATE ai_model_providers SET priority = (SELECT pri_a FROM swap), updated_at = now()
+			WHERE id = (SELECT id_b FROM swap)
+		)
+		UPDATE ai_model_providers SET priority = (SELECT pri_b FROM swap), updated_at = now()
+		WHERE id = (SELECT id_a FROM swap)
+		RETURNING id
+	`;
+
+	if (rows.length === 0) error(400, 'Kunne ikke bytte — sjekk at begge tilhører samme alias');
+
+	// Returner oppdaterte providers for aliaset
+	const updated = await sql`
+		SELECT id, alias_id, priority, litellm_model, api_key_env, is_active, extra_params
+		FROM ai_model_providers
+		WHERE alias_id = (SELECT alias_id FROM ai_model_providers WHERE id = ${id_a}::uuid)
+		ORDER BY priority ASC
+	`;
+
+	return json(updated);
+};

web/src/routes/server-admin/ai/+page.svelte

@@ -479,6 +479,31 @@
 		}
 	}
 
+	async function swapProviders(providerA: Provider, providerB: Provider) {
+		saving = providerA.id;
+		errorMsg = '';
+		try {
+			const res = await fetch('/api/admin/ai/providers/swap', {
+				method: 'POST',
+				headers: { 'Content-Type': 'application/json' },
+				body: JSON.stringify({ id_a: providerA.id, id_b: providerB.id })
+			});
+			if (!res.ok) throw new Error('Feil ved bytte');
+			const updated: Provider[] = await res.json();
+			// Oppdater providers-listen med nye prioriteter
+			for (const u of updated) {
+				const existing = providers.find(p => p.id === u.id);
+				if (existing) existing.priority = u.priority;
+			}
+			providers = [...providers];
+			markSaved(providerA.id);
+		} catch {
+			errorMsg = 'Kunne ikke bytte rekkefølge';
+		} finally {
+			saving = null;
+		}
+	}
+
 	async function toggleProvider(provider: Provider) {
 		saving = provider.id;
 		errorMsg = '';
@@ -894,10 +919,26 @@
 
 				{#if expandedAlias === alias.id}
 					<div class="provider-list-alias">
-						{#each ap as provider (provider.id)}
+						{#each ap as provider, idx (provider.id)}
 							{@const keyDisabled = !isKeyEnabled(provider.api_key_env)}
 							<div class="provider-row-alias" class:provider-row--inactive={!provider.is_active} class:provider-row--key-off={keyDisabled}>
-								<span class="col-pri">#{provider.priority}</span>
+								<span class="col-pri">
+									<span class="pri-arrows">
+										<button
+											class="pri-btn"
+											disabled={idx === 0}
+											onclick={() => swapProviders(provider, ap[idx - 1])}
+											title="Flytt opp"
+										>&#x25B2;</button>
+										<button
+											class="pri-btn"
+											disabled={idx === ap.length - 1}
+											onclick={() => swapProviders(provider, ap[idx + 1])}
+											title="Flytt ned"
+										>&#x25BC;</button>
+									</span>
+									#{provider.priority}
+								</span>
 								<span class="col-model">{provider.litellm_model}</span>
 								<span class="col-key" class:col-key--disabled={keyDisabled}>{provider.api_key_env}{#if keyDisabled} (av){/if}</span>
 								<span class="col-extra-pills">
@@ -1560,7 +1601,35 @@
 	.col-pri {
 		color: #8b92a5;
 		font-size: 0.75rem;
-		width: 30px;
+		width: 60px;
+		display: flex;
+		align-items: center;
+		gap: 0.25rem;
+	}
+
+	.pri-arrows {
+		display: flex;
+		flex-direction: column;
+		gap: 0;
+	}
+
+	.pri-btn {
+		background: none;
+		border: none;
+		color: #6c7086;
+		font-size: 0.55rem;
+		cursor: pointer;
+		padding: 0;
+		line-height: 1;
+	}
+
+	.pri-btn:hover:not(:disabled) {
+		color: #cdd6f4;
+	}
+
+	.pri-btn:disabled {
+		opacity: 0.2;
+		cursor: default;
 	}
 
 	.col-model {