pres_mgmt: config schema cleanup phase 2

- Add show__session_qr + show__presenter_qr to PressMgmtRemoteCfg and sync function;
  QR toggles now gated on remote admin enable (trusted_access can still override)
- Remove hide__launcher_link_legacy everywhere (Flask launcher fully retired)
- Remove limit__options (YAGNI)
- Implement limit__navigation: hides Session Search nav link for non-trusted users
- Wire hide__report_kv into reports page: all 8 report tabs now use synced store
  with canonical slug names and edit_mode bypass; config UI now uses structured
  toggles instead of raw JSON textarea
- Gate hide__launcher_link local toggle on show__launcher_link || trusted_access
- Config UI: add show__session_qr + show__presenter_qr to opt-in features section
- Menu opts: add Query Limits / Display & Search / Staff Options section labels
- Bump AE_PRES_MGMT_LOC_VERSION to 2 (schema change forces localStorage reset)
- svelte-check: 0 errors

src/routes/events/ae_comp__event_session_obj_li.svelte

@@ -7,7 +7,6 @@ interface Props {
     hide__session_location?: boolean;
     hide__session_poc?: boolean;
     hide__admin?: boolean;
-    hide__launcher_link_legacy?: boolean;
     hide__launcher_link?: boolean;
     hide__location_link?: boolean;
     show__session_files?: boolean;
@@ -22,7 +21,6 @@ let {
     hide__session_location = $bindable(false),
     hide__session_poc = $bindable(false),
     hide__admin = $bindable(false),
-    hide__launcher_link_legacy = $bindable(false),
     hide__launcher_link = $bindable(false),
     hide__location_link = $bindable(false),
     show__session_files = $bindable(false),