dangernoodle-io / breadboard / 24976773764

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fix(bb_mdns): re-arm browse subscriptions after WiFi reconnect (#108)

When mdns_free() is called during WiFi disconnect, all browse subscription
handles become invalid, but s_subs[] table entries remain marked in_use.
bb_mdns_on_got_ip now re-initializes mDNS but never re-subscribes the browses,
causing consumers to stop receiving discovery callbacks after the first
reconnect.

This fix iterates s_subs[] in bb_mdns_start_internal and re-issues
mdns_browse_new() for each in_use slot after mDNS initialization.
On failure, the slot remains in_use so a subsequent reconnect can retry.

B1-82

Co-authored-by: Claude Haiku 4.5 <noreply@anthropic.com>

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