fix: harden Pi management readiness

frontend/src/shell/SessionDocumentsPanel.test.tsx

@@ -23,7 +23,7 @@ const base: SessionSummary = {
 };
 
 beforeEach(() => {
-  server.use(http.get("http://localhost:8787/sessions/s1/documents", () =>
+  server.use(http.get("/api/sessions/s1/documents", () =>
     HttpResponse.json([
       { phase: "—", key: "question", title: "Original question", format: "text", content: "How many ablations?" },
       { phase: "F7", key: "sql", title: "Final SQL", format: "sql", content: "SELECT 1" },
@@ -77,7 +77,7 @@ test("a malformed document renders a fallback without taking down its siblings",
   // unmounts the tree); the good sibling document must still render.
   // resetHandlers(...) replaces the beforeEach handler so this response is used.
   server.resetHandlers(
-    http.get("http://localhost:8787/sessions/s1/documents", () =>
+    http.get("/api/sessions/s1/documents", () =>
       HttpResponse.json([
         { phase: "F4", key: "schema", title: "Schema linking", format: "schema-linking", content: '{"joins":[]}' },
         { phase: "—", key: "question", title: "Original question", format: "text", content: "SIBLING-SURVIVES" },
@@ -95,7 +95,7 @@ test("a malformed document renders a fallback without taking down its siblings",
 
 test("renders the canonical summary order and formats human text as Markdown", async () => {
   server.resetHandlers(
-    http.get("http://localhost:8787/sessions/s1/documents", () =>
+    http.get("/api/sessions/s1/documents", () =>
       HttpResponse.json([
         { phase: "—", key: "question", title: "Original question", format: "text", content: "Original **question**" },
         { phase: "F7", key: "sql", title: "Final SQL", format: "sql", content: "SELECT 1" },
@@ -129,7 +129,7 @@ test("renders the canonical summary order and formats human text as Markdown", a
 
 test("renders one approved-then-declined memory list with Markdown details", async () => {
   server.resetHandlers(
-    http.get("http://localhost:8787/sessions/s1/documents", () =>
+    http.get("/api/sessions/s1/documents", () =>
       HttpResponse.json([
         {
           phase: "F8",
@@ -182,7 +182,7 @@ test("never renders technical approval, promotion, or memory decisions", async (
     { type: "column_excluded", subject: "fact_a.note", detail: "Non **pertinente**" },
   ].map((decision) => JSON.stringify(decision)).join("\n");
   server.resetHandlers(
-    http.get("http://localhost:8787/sessions/s1/documents", () =>
+    http.get("/api/sessions/s1/documents", () =>
       HttpResponse.json([
         { phase: "—", key: "decisions", title: "Decisions", format: "decisions", content: lines },
       ]),