perf: add secondary FK indexes to core OSS schemas

Add 13 secondary indexes across 10 tables in the SQLite schema and
5 missing indexes to the PostgreSQL schema.

All list endpoints (listSites, listResources, listClients, listRoles,
listTargets, listUserOrgs) filter and join on these FK columns. In the
SQLite schema, no secondary indexes existed at all on these foreign keys,
forcing full sequential scans on every paginated request and session lookup.

SQLite changes (13 new indexes):
  - sites.orgId
  - resources.orgId
  - targets.resourceId, targets.siteId
  - newt.siteId
  - clients.orgId, clients.userId
  - labels.orgId
  - olms.userId
  - session.userId
  - userOrgs.userId, userOrgs.orgId
  - roles.orgId

PG changes (5 new indexes, rest already present):
  - labels.orgId
  - session.userId
  - userOrgs.userId, userOrgs.orgId
  - roles.orgId
  - olms.userId

server/db/pg/schema/schema.ts

@@ -262,16 +262,20 @@ export const resourceAiModels = pgTable(
     (t) => [primaryKey({ columns: [t.resourceId, t.modelId] })]
 );
 
-export const labels = pgTable("labels", {
-    labelId: serial("labelId").primaryKey(),
-    name: varchar("name").notNull(),
-    color: varchar("color").notNull(),
-    orgId: varchar("orgId")
-        .references(() => orgs.orgId, {
-            onDelete: "cascade"
-        })
-        .notNull()
-});
+export const labels = pgTable(
+    "labels",
+    {
+        labelId: serial("labelId").primaryKey(),
+        name: varchar("name").notNull(),
+        color: varchar("color").notNull(),
+        orgId: varchar("orgId")
+            .references(() => orgs.orgId, {
+                onDelete: "cascade"
+            })
+            .notNull()
+    },
+    (t) => [index("idx_labels_orgid").on(t.orgId)]
+);
 
 export const launcherViews = pgTable("launcherViews", {
     viewId: serial("viewId").primaryKey(),
@@ -693,15 +697,19 @@ export const twoFactorBackupCodes = pgTable("twoFactorBackupCodes", {
     codeHash: varchar("codeHash").notNull()
 });
 
-export const sessions = pgTable("session", {
-    sessionId: varchar("id").primaryKey(),
-    userId: varchar("userId")
-        .notNull()
-        .references(() => users.userId, { onDelete: "cascade" }),
-    expiresAt: bigint("expiresAt", { mode: "number" }).notNull(),
-    issuedAt: bigint("issuedAt", { mode: "number" }),
-    deviceAuthUsed: boolean("deviceAuthUsed").notNull().default(false)
-});
+export const sessions = pgTable(
+    "session",
+    {
+        sessionId: varchar("id").primaryKey(),
+        userId: varchar("userId")
+            .notNull()
+            .references(() => users.userId, { onDelete: "cascade" }),
+        expiresAt: bigint("expiresAt", { mode: "number" }).notNull(),
+        issuedAt: bigint("issuedAt", { mode: "number" }),
+        deviceAuthUsed: boolean("deviceAuthUsed").notNull().default(false)
+    },
+    (t) => [index("idx_sessions_userid").on(t.userId)]
+);
 
 export const newtSessions = pgTable("newtSession", {
     sessionId: varchar("id").primaryKey(),
@@ -711,19 +719,26 @@ export const newtSessions = pgTable("newtSession", {
     expiresAt: bigint("expiresAt", { mode: "number" }).notNull()
 });
 
-export const userOrgs = pgTable("userOrgs", {
-    userId: varchar("userId")
-        .notNull()
-        .references(() => users.userId, { onDelete: "cascade" }),
-    orgId: varchar("orgId")
-        .references(() => orgs.orgId, {
-            onDelete: "cascade"
-        })
-        .notNull(),
-    isOwner: boolean("isOwner").notNull().default(false),
-    autoProvisioned: boolean("autoProvisioned").default(false),
-    pamUsername: varchar("pamUsername") // cleaned username for ssh and such
-});
+export const userOrgs = pgTable(
+    "userOrgs",
+    {
+        userId: varchar("userId")
+            .notNull()
+            .references(() => users.userId, { onDelete: "cascade" }),
+        orgId: varchar("orgId")
+            .references(() => orgs.orgId, {
+                onDelete: "cascade"
+            })
+            .notNull(),
+        isOwner: boolean("isOwner").notNull().default(false),
+        autoProvisioned: boolean("autoProvisioned").default(false),
+        pamUsername: varchar("pamUsername") // cleaned username for ssh and such
+    },
+    (t) => [
+        index("idx_userOrgs_userid").on(t.userId),
+        index("idx_userOrgs_orgid").on(t.orgId)
+    ]
+);
 
 export const emailVerificationCodes = pgTable("emailVerificationCodes", {
     codeId: serial("id").primaryKey(),
@@ -751,22 +766,26 @@ export const actions = pgTable("actions", {
     description: varchar("description")
 });
 
-export const roles = pgTable("roles", {
-    roleId: serial("roleId").primaryKey(),
-    orgId: varchar("orgId")
-        .references(() => orgs.orgId, {
-            onDelete: "cascade"
-        })
-        .notNull(),
-    isAdmin: boolean("isAdmin"),
-    name: varchar("name").notNull(),
-    description: varchar("description"),
-    requireDeviceApproval: boolean("requireDeviceApproval").default(false),
-    sshSudoMode: varchar("sshSudoMode", { length: 32 }).default("full"), // "none" | "full" | "commands"
-    sshSudoCommands: text("sshSudoCommands").default("[]"),
-    sshCreateHomeDir: boolean("sshCreateHomeDir").default(true),
-    sshUnixGroups: text("sshUnixGroups").default("[]")
-});
+export const roles = pgTable(
+    "roles",
+    {
+        roleId: serial("roleId").primaryKey(),
+        orgId: varchar("orgId")
+            .references(() => orgs.orgId, {
+                onDelete: "cascade"
+            })
+            .notNull(),
+        isAdmin: boolean("isAdmin"),
+        name: varchar("name").notNull(),
+        description: varchar("description"),
+        requireDeviceApproval: boolean("requireDeviceApproval").default(false),
+        sshSudoMode: varchar("sshSudoMode", { length: 32 }).default("full"), // "none" | "full" | "commands"
+        sshSudoCommands: text("sshSudoCommands").default("[]"),
+        sshCreateHomeDir: boolean("sshCreateHomeDir").default(true),
+        sshUnixGroups: text("sshUnixGroups").default("[]")
+    },
+    (t) => [index("idx_roles_orgid").on(t.orgId)]
+);
 
 export const userOrgRoles = pgTable(
     "userOrgRoles",
@@ -1409,7 +1428,10 @@ export const olms = pgTable(
         }),
         archived: boolean("archived").notNull().default(false)
     },
-    (t) => [index("idx_olms_clientid").on(t.clientId)]
+    (t) => [
+        index("idx_olms_clientid").on(t.clientId),
+        index("idx_olms_userid").on(t.userId)
+    ]
 );
 
 export const currentFingerprint = pgTable("currentFingerprint", {