fix: update dependency path, remove dead recipes, apply lint fixes

Fixed broken dependency path (../clients/python -> ../client-py).
Added strict ruff config. Removed dead meshcore/orac/telemetry
justfile recipes (scripts never existed). Applied SIM105
(contextlib.suppress) and I001 (import sorting) lint fixes.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

justfile

@@ -2,8 +2,6 @@ set shell := ["bash", "-c"]
 
 _proj := source_directory()
 _uv := "uv run --project " + _proj
-_uv_meshcore := "uv run --project " + _proj + " --extra meshcore"
-_uv_orac := "uv run --project " + _proj + " --extra orac"
 
 [private]
 _ensure_tools:
@@ -43,15 +41,3 @@ test-commands *args: _ensure_tools
 # Two-way LoRa bridge over TCP
 bridge *args: _ensure_tools
     @{{_uv}} {{source_directory()}}/lora_bridge.py {{args}}
-
-# MeshCore packet decoder/monitor
-meshcore *args: _ensure_tools
-    @{{_uv_meshcore}} {{source_directory()}}/meshcore/meshcore_rx.py {{args}}
-
-# MeshCore AI bot (requires ANTHROPIC_API_KEY)
-orac *args: _ensure_tools
-    @{{_uv_orac}} {{source_directory()}}/meshcore/ai_bot.py {{args}}
-
-# MeshCore repeater telemetry monitor
-telemetry *args: _ensure_tools
-    @{{_uv_meshcore}} {{source_directory()}}/meshcore/telemetry_monitor.py {{args}}