Improve logging and simplify LAN-only deployment behavior

[jimmieme]

This PR improves Android client observability and aligns runtime behavior with
the simplified deployment target (LAN-first, no platform dependency by
default).

What Changed

• Added NO_PLATFORM_MODE build config support and DeploymentModeUtil.
• Enhanced logging utilities:
  • Added safe URL logging and string masking helpers.
  • Applied logging improvements across managers, presenters, transfer, and
    network modules.
• Updated URL/domain-related constants and handling to match current AO.space
  deployment strategy.
• Improved robustness of gateway/agent/file-transfer related flows under
  simplified deployment assumptions.
• Included minor build/script housekeeping updates.

Why

Recent deployment and troubleshooting work required:

1. clearer logs for field debugging,
2. reduced coupling to platform-specific paths in simplified mode,
3. more predictable LAN-first behavior.

Validation

• Android client build/installation and core flows were validated in the recent
  regression cycle:
  • device bind
  • space creation
  • file upload
  • device information checks

Impact

• Scope is Android client only.
• No server contract changes.
• Main user-facing effect is improved stability and diagnosability in
  simplified deployments.

Generated-by: Codex