forge: add patch 5 — hop-aware bot coordination

Bundles in-progress utility commands (TIME, LORA, ID, NEIGHBORS), neighbor
tracking, received_at_timestamp / personalized acks, and per-hop response
delay coordination. Tunes the coordinator so multi-hop senders actually get
responses: hop step 5s→1.5s, hop bias capped at 8s, pending TTL 15s→45s.

Verified on Heltec V3 bench bot: responds to #bot at 2, 4, and 6 hops.

BOT_PREFS_VERSION bumped 2→3, so existing bots will reset bot prefs (channel
names, known bots) to defaults on first boot of this firmware.

tests/firmware_bot/run_tests.py

@@ -17,6 +17,7 @@ def main():
         "-Wall",
         "-Wextra",
         "-Werror",
+        "-DBOT_LOCAL_TIME_OFFSET_SECONDS=-21600",
         "-I",
         str(SRC_DIR),
         str(ROOT / "tests" / "firmware_bot" / "test_firmware_bot.cpp"),