feat(lanes): add client API methods for F4 lane actions (F4)

client/src/lib/api.ts

@@ -1072,6 +1072,13 @@ export const api = {
         purged_events: number;
         purged_agents: number;
       }>("/settings/cleanup", { method: "POST", body: JSON.stringify(params) }),
+    skillsInstall: () =>
+      request<{ installed: true; path: string }>("/skills/install", { method: "POST", body: "{}" }),
+    gc: (body: { dryRun?: boolean } = {}) =>
+      request<{ reaped: number[]; capped: { path: string; sizeBefore: number }[] }>("/lanes/gc", {
+        method: "POST",
+        body: JSON.stringify(body),
+      }),
   },
 
   // ─────────────────────────────── Workflows API ──────────────────────────────
@@ -2063,6 +2070,28 @@ export const api = {
           body: JSON.stringify(body),
         }),
     },
+    agentsInstall: (id: number) =>
+      request<{ installed: string[] }>(`/lanes/${id}/agents/install`, {
+        method: "POST",
+        body: "{}",
+      }),
+    mcpSync: (id: number) =>
+      request<{ servers: string[]; profilesSeeded: string[] }>(`/lanes/${id}/mcp/sync`, {
+        method: "POST",
+        body: "{}",
+      }),
+    integration: (id: number, name: string) =>
+      request<{ enabled: boolean }>(`/lanes/${id}/integrations/${encodeURIComponent(name)}`),
+    syncBaseCheck: (id: number, branch?: string) =>
+      request<{
+        code: number;
+        devDelta?: string[] | null;
+        overlap?: string[] | null;
+        collisions?: { file: string; collidesWith: string; suggestion: string }[];
+      }>(`/lanes/${id}/sync-base`, {
+        method: "POST",
+        body: JSON.stringify({ mode: "check", branch }),
+      }),
   },
   // ──────────────────────────────── Locks API ────────────────────────────────
   /** Named locks across all lanes: used for serialization and gating.