fix(ui): parse running/enabled into status; expand e2e to 13 tests

Backend /agents response shape: {id, name, version, desc, enabled: bool,
running: bool, pid, instances, config_path}. parse_agents() was reading
nonexistent fields "status", "uptime_seconds", "messages_24h" so the
table showed every agent as "unknown".

Derive status from running + enabled:
  running=true                  → "running"
  running=false, enabled=false  → "disabled"
  running=false, enabled=true   → "stopped"

E2E suite now covers (13 tests, all passing in ~9s):
- connect happy + bad-host + missing-apikey + URL-trim
- shape contract (id/name/running/enabled present + bool)
- SSE smoke: /sse/status and /sse/agents/{id}/logs must NOT return
  "streaming unsupported" (depends on backend statusWriter.Flush fix
  shipped in agents_and_robots master 4822208)
- auth boundary: /health no-auth, /agents 401 sin Bearer + 401 con key falsa
- control: POST /agents/test-bot/start returns valid JSON
- detail: GET /agents/{id} returns id + logs[]

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

main.cpp

@@ -242,7 +242,11 @@ static std::string make_url(const AppState& s, const std::string& path) {
     return base + path;
 }
 
-// Parse agents JSON array from /agents endpoint
+// Parse agents JSON array from /agents endpoint.
+// Backend shape (agents_and_robots/internal/api/handlers.go):
+//   { id, name, version, desc, enabled: bool, running: bool, pid: int,
+//     instances: int, config_path }
+// status is derived; uptime/msg_24h not provided yet (v0.2 backend work).
 static std::vector<AgentRow> parse_agents(const std::string& body) {
     std::vector<AgentRow> rows;
     auto j = json::parse(body, nullptr, false);
@@ -251,9 +255,13 @@ static std::vector<AgentRow> parse_agents(const std::string& body) {
         AgentRow r;
         r.id           = a.value("id", "");
         r.display_name = a.value("name", r.id);
-        r.status       = a.value("status", "unknown");
-        r.uptime_s     = a.value("uptime_seconds", (long long)0);
-        r.msg_24h      = a.value("messages_24h", 0);
+        bool enabled   = a.value("enabled", false);
+        bool running   = a.value("running", false);
+        if (running)       r.status = "running";
+        else if (!enabled) r.status = "disabled";
+        else               r.status = "stopped";
+        r.uptime_s     = 0;
+        r.msg_24h      = a.value("instances", 0);  // hack: show instances until backend exposes msg_24h
         rows.push_back(std::move(r));
     }
     return rows;