feat(aiturk): phone link for AITURK Mobil (1.0.0-beta.15)

Settings gets a Phone link window: when enabled, the IDE main process runs a
small TLS proxy on the local network (self-signed certificate, pinned by its
fingerprint) in front of the loopback backend and pairs a phone by QR code
or an 8-character code. Each phone gets its own revocable token; the backend
session token never leaves the computer. The root page, terminal sockets and
secret or settings-changing endpoints are not reachable from a phone. The
old WebRTC pairing window is replaced.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01B8ppceaR5s6cvMnm7uGRnf

apps/desktop/src/global.d.ts

@@ -331,6 +331,10 @@ declare global {
         cancel: () => Promise<{ ok: true }>
         overwriteCli: () => Promise<{ cli: AiturkCliStatus }>
       }
+      /** "Telefon bağlantısı": opens the pairing window (electron/mobile-host.mjs). Windows only. */
+      aiturkMobile?: {
+        open: () => Promise<{ ok: true }>
+      }
       /** One-shot loopback callback listener for MCP OAuth against remote
        *  backends (electron/mcp-oauth-callback-ipc.ts): bind on THIS machine,
        *  pass redirectUri as client_redirect_uri to mcp.servers.oauth.start,