feat(channels): listen on #development (KDF-derived PSK)

Add #development to the built-in hashtag channel set; its PSK is
derived from the channel name via the standard MeshCore hashtag KDF.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

orac/ai.py

@@ -50,10 +50,20 @@ def _shorten_with_claude(text: str, max_chars: int) -> str:
             model="claude-sonnet-4-6",
             max_tokens=256,
             timeout=CLAUDE_TIMEOUT_S,
+            system=(
+                "You rewrite a message to fit within a strict character budget. "
+                "Output ONLY the rewritten message — no preamble, no quotes, no "
+                "explanation, no commentary, no labels, no character count. "
+                "Preserve the original meaning, tone, and voice. Plain text only."
+            ),
             messages=[
                 {
                     "role": "user",
-                    "content": f"Shorten this to {max_chars} characters: {text}",
+                    "content": (
+                        f"Rewrite the following message so it is at most "
+                        f"{max_chars} characters. Reply with the rewritten "
+                        f"message only.\n\n{text}"
+                    ),
                 }
             ],
         )

orac/bot.py

@@ -178,8 +178,9 @@ def connect_and_run(port: str | None) -> None:
 
     boot("Connecting...")
     # `dl.connect()` auto-discovers the port, sends GET_INFO, applies
-    # RADIO_CONFIG via SET_CONFIG, and starts the keepalive daemon —
+    # RADIO_CONFIG via SET_CONFIG (with `tx_power_dbm` auto-clamped to
-    # no manual Ping/SetConfig/StartRx dance required.
+    # the device's PA ceiling — SX1262 caps at 22 dBm, SX1276 PA_BOOST
+    # at 20), and starts the keepalive daemon.
     dongle = dl.connect(port=port, timeout=2, config=RADIO_CONFIG)
     boot("Connected")
 

orac/constants.py

@@ -52,11 +52,11 @@ RADIO_CONFIG: dl.LoRaConfig = dl.LoRaConfig(
     bw=dl.LoRaBandwidth.KHZ_62_5,
     sf=7,
     cr=dl.LoRaCodingRate.CR_4_5,
-    sync_word=0x3444,
+    sync_word=0x1424,
-    tx_power_dbm=22,  # DongLoRa Protocol v2 removed the "max power" sentinel; 22 dBm
+    tx_power_dbm=22,  # Requested max. `connect_and_run` clamps this down to
-    # is the SX1262 chip ceiling and the practical upper bound on every
+    # `dongle.info.tx_power_max_dbm` at connect time, so each board
-    # current DongLoRa board. If you operate a board with a lower cap,
+    # transmits at its own PA ceiling (SX1262: 22 dBm, SX1276 PA_BOOST:
-    # lower this (or read `d.info.tx_power_max_dbm` and rebuild the config).
+    # 20 dBm, …) without needing a per-board config table here.
     preamble_len=16,
     header_mode=dl.LoRaHeaderMode.EXPLICIT,
     payload_crc=True,

orac/crypto.py

@@ -256,6 +256,7 @@ _BUILTIN_HASHTAG_CHANNELS: tuple[str, ...] = (
     "#weather",
     "#protest",
     # --- Dev / testing ---
+    "#development",
     "#devtest",
     "#devtestdevtest",
 )

pyproject.toml

@@ -6,7 +6,7 @@ license = "MIT"
 requires-python = ">=3.10"
 authors = [{ name = "Stephen Waits" }]
 dependencies = [
-    "donglora>=1.0.0,<2.0.0",
+    "donglora>=1.1.0,<2.0.0",
     "anthropic",
     "cobs",
     "pyserial",

uv.lock

@@ -178,7 +178,7 @@ wheels = [
 
 [[package]]
 name = "donglora"
-version = "1.0.0"
+version = "1.1.0"
 source = { editable = "../client-py" }
 dependencies = [
     { name = "cobs" },