refactor: organise source files by ownership

Separate host-independent helpers under common/core and colocate feature
support code with its owners. Update imports, tests, and source-layout
guidance while preserving runtime behaviour.

src/common/core/settings/turnPrivacy.ts

@@ -0,0 +1,63 @@
+import {
+    hasManagedP2PTurnConfiguration,
+    type ObsidianLiveSyncSettings,
+} from "@vrtmrz/livesync-commonlib/compat/common/types";
+import { pickP2PSyncSettings } from "@vrtmrz/livesync-commonlib/compat/common/utils";
+import { CLOUDFLARE_TURN_TYPE } from "@/integrations/cloudflare/settings";
+
+/** Include inactive profiles when deciding whether Markdown would disclose provider settings. */
+export function hasManagedTurnSettings(settings: Partial<ObsidianLiveSyncSettings>): boolean {
+    return (
+        hasManagedP2PTurnConfiguration(settings) ||
+        Object.values(settings.remoteConfigurations ?? {}).some(({ uri }) => {
+            if (!uri.startsWith("sls+p2p://")) return false;
+            const queryStart = uri.indexOf("?");
+            return (
+                queryStart >= 0 && new URLSearchParams(uri.slice(queryStart + 1).split("#", 1)[0]).has("managedType")
+            );
+        })
+    );
+}
+
+/** Reports retain a recognised provider label and omit issued credentials. */
+export function redactTurnSettingsForReport(settings: Partial<ObsidianLiveSyncSettings>): void {
+    if (settings.P2P_managedType) {
+        settings.P2P_managedType =
+            settings.P2P_managedType === CLOUDFLARE_TURN_TYPE ? CLOUDFLARE_TURN_TYPE : "redacted";
+    }
+    if (settings.P2P_managedId !== undefined) settings.P2P_managedId = "redacted";
+    if (settings.P2P_managedToken !== undefined) settings.P2P_managedToken = "redacted";
+    delete settings.P2P_iceServers;
+    delete settings.P2P_iceServersExpiresAt;
+}
+
+/** Managed connection profiles are shared through Setup URIs and QR codes. */
+export function omitManagedTurnProfilesFromMarkdown(settings: Partial<ObsidianLiveSyncSettings>): void {
+    delete settings.P2P_iceServers;
+    delete settings.P2P_iceServersExpiresAt;
+    if (!hasManagedTurnSettings(settings)) return;
+    delete settings.P2P_managedType;
+    delete settings.P2P_managedId;
+    delete settings.P2P_managedToken;
+    delete settings.remoteConfigurations;
+    delete settings.activeConfigurationId;
+    delete settings.P2P_ActiveRemoteConfigurationId;
+}
+
+/** Preserve the complete connection when Markdown omits its profile group. */
+export function preserveManagedTurnProfilesOnMarkdownImport(
+    incoming: Partial<ObsidianLiveSyncSettings>,
+    current: ObsidianLiveSyncSettings,
+    merged: ObsidianLiveSyncSettings
+): void {
+    if (
+        !hasManagedTurnSettings(current) ||
+        incoming.remoteConfigurations !== undefined ||
+        incoming.P2P_managedType !== undefined
+    )
+        return;
+    merged.remoteConfigurations = structuredClone(current.remoteConfigurations);
+    merged.activeConfigurationId = current.activeConfigurationId;
+    merged.P2P_ActiveRemoteConfigurationId = current.P2P_ActiveRemoteConfigurationId;
+    Object.assign(merged, pickP2PSyncSettings(current));
+}