Add trading-positions@trading-journal desklet (#1770)

* Add Trading Positions desklet

Desktop widget for Crypto Trading Journal (github.com/Mouses007/Crypto-Trading-Journal).
Shows open Bitunix futures positions with real-time PnL from live Bitunix API.
Includes i18n support with German translation.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

* trading-positions@trading-journal: update to v1.2.0

Add running Pionex bots section, style settings (font sizes, background
opacity, min-width), toggles for mark/realized PnL, and Soup 3 support
for newer Cinnamon versions.

* trading-positions@trading-journal: English UI + translation support (v1.3.0)

Address review request: use English messages in all files and offer
translations.

- desklet.js: wrap all user-facing strings with _() and bind the
  UUID text domain; all strings and code comments are now English
- settings-schema.json / metadata.json: English descriptions
- po/trading-positions@trading-journal.pot regenerated with
  cinnamon-xlet-makepot from the actual sources
- po/de.po: German translation added

* trading-positions: use GLib.get_user_data_dir() for locale path

Address best-practices scanner: avoid hardcoding .local/share; use
GLib.get_user_data_dir() + "/locale" which respects XDG_DATA_HOME.

* trading-positions@trading-journal: v1.4.0 — key-based endpoint + neutral bots

- Fetch the public /api/esp32/display endpoint with X-ESP32-Key instead of
  the session-gated broker routes → works with the journal's password gate.
- New 'ESP32 API key' setting.
- Neutral grid bots shown as NEUTRAL (grey) instead of long/short.
- po regenerated (new strings; removed 'Connecting to %s…'); de.po updated.

* trading-positions@trading-journal: v1.4.1 — group by exchange + unified LONG/SHORT side

- Group open positions by exchange (Bitunix/Bitget/Pionex) with a per-broker
  section header + summed PnL.
- Show side uniformly as LONG/SHORT/NEUTRAL (not BUY/SELL).
- Neutral grid bots shown in grey.

* trading-positions@trading-journal: add README.md

---------

Co-authored-by: Mouses007 <Mouses007@users.noreply.github.com>
Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>

Author: Mouses007

trading-positions@trading-journal/README.md

@@ -0,0 +1,31 @@
+# Trading Positions Desklet
+
+Shows your open positions and running bots from a self-hosted
+[Crypto Trading Journal](https://github.com/Mouses007/Crypto-Trading-Journal)
+instance directly on your desktop, with live PnL — grouped by exchange.
+
+## Features
+- Open futures positions from **Bitunix** and **Bitget**, plus running **Pionex** bots
+- Grouped per exchange with a per-broker summed PnL
+- Per position: symbol, side (LONG/SHORT/NEUTRAL), leverage, entry/mark price,
+  unrealized & realized PnL; bots show entry/liquidation and PnL in the margin coin
+- Auto-refreshes on a configurable interval (default 30 s)
+- Adjustable font sizes, background opacity and width
+
+## Requirements
+- A running **Crypto Trading Journal** instance reachable from this machine
+  (LAN or VPN).
+- An **ESP32 API key** from the journal: open **Settings → External displays
+  (ESP32 / Widget / Desklet)** and generate a key. The desklet uses the journal's
+  read-only, key-authenticated endpoint, so it keeps working even when the
+  journal's optional password protection is enabled.
+
+## Setup
+1. Add the desklet to your desktop (right-click desktop → *Add Desklets*).
+2. Right-click the desklet → *Configure* and enter:
+   - **Server host / IP** (e.g. `192.168.178.100`) and **port** (default `8080`)
+   - **ESP32 API key** (from the journal settings above)
+   - Optional: refresh interval, which columns to show, font sizes, opacity, width
+
+## Links
+- Project & documentation: https://github.com/Mouses007/Crypto-Trading-Journal