Improve error handling: log silently swallowed exceptions

[devin-ai-integration]

Summary

Replaces ~15 bare except Exception: pass blocks across MeshCore_Dynamic_Interface.py and MeshCore_Interface.py with proper RNS.log() / _safe_log() calls so failures are visible in logs instead of silently swallowed.

MeshCore_Dynamic_Interface.py — 7 fixes:

• _async_setup → set_radio failure now logged at LOG_WARNING (was silent pass)
• _bind_discovery_loop → RNSBIND_REQ, heartbeat, and response send failures all logged at LOG_WARNING (were 3 separate silent pass blocks)
• _process_tunnel_text → base64 decode errors logged at LOG_DEBUG (was silent return)
• _process_tunnel_text → reassembly except Exception now logs pkt_id + sender context at LOG_WARNING (was silent cleanup + return)
• processOutgoing → fragment enqueue failure logged at LOG_WARNING (was silent pass — data loss with no indication)

MeshCore_Interface.py — 8 fixes:

• _read_reticulum_config_file → file read errors logged at LOG_WARNING (was silent continue)
• _open_serial_and_init → initial get_contacts() failure logged at LOG_WARNING (was silent pass)
• _open_serial_and_init → removed redundant outer try/except: pass wrapping transport registration (inner handler already logged)
• _open_serial_and_init → fut.result(timeout=5) timeout now logged at LOG_DEBUG with context (was silent pass)
• _handle_incoming_payload → sender key normalization fallback logged at LOG_DEBUG (was silent)
• _handle_incoming_payload → peer mapping update failures logged at LOG_DEBUG (was silent pass)
• _handle_new_contact_event → endpoint_contact resolution and outer handler both logged at LOG_WARNING (were nested silent pass blocks)
• process_outgoing → destination extraction failure logged at LOG_DEBUG (was silent pass)

Log levels follow the existing conventions: LOG_WARNING for failures that affect functionality (lost packets, failed sends, failed config reads), LOG_DEBUG for lower-severity fallbacks (normalization, mapping updates, decode errors on potentially-not-for-us data).

MeshCore_Channel_Interface.py already had proper error logging throughout — no changes needed.

Link to Devin session: https://app.devin.ai/sessions/62c34020c20345cb830c0a8bd48ed9f7
Requested by: @comms-engineer

[devin-ai-integration]

🤖 Devin AI Engineer

I'll be helping with this pull request! Here's what you should know:

✅ I will automatically:

• Address comments on this PR. Add '(aside)' to your comment to have me ignore it.
• Look at CI failures and help fix them

Note: I can only respond to comments from users who have write access to this repository.

⚙️ Control Options:

• Disable automatic comment, CI, and merge conflict monitoring