Add order-trim-workorders script and documentation

Author: unboundlopez

docs/order-trim-workorders.rst

@@ -0,0 +1,64 @@
+order-trim-workorders
+=====================
+
+.. dfhack-tool::
+    :summary: Pick, pretty-format, and trim work orders from DFHack order JSON files.
+    :tags: fort gui workorders
+
+This script provides a two-step UI for trimming work order files in
+``dfhack-config/orders``:
+
+1. A picker that lists ``.json`` files and filters by filename.
+2. A trimmer that opens a pretty-formatted ``.txt`` variant and lets you mark
+   whole work-order objects for deletion.
+
+When a work order is marked, the full top-level JSON object is targeted
+(including lines currently hidden by hide-noise view filtering).
+
+Usage
+-----
+
+::
+
+    order-trim-workorders
+    order-trim-workorders --file <orders.json>
+
+Arguments
+---------
+
+``--file <path-or-name>``
+    Pretty-formats the target ``.json`` into its ``.txt`` variant without
+    opening the picker UI. If only a filename is provided, it is resolved under
+    ``dfhack-config/orders``.
+
+Picker controls
+---------------
+
+- Type in ``Search`` to filter filenames.
+- :kbd:`Enter` or click opens the selected file in the trimmer.
+- :kbd:`Esc` closes.
+
+Trimmer controls
+----------------
+
+- Click to select a line.
+- Toggle mark for the selected work order with:
+
+  - double left-click on the same line, or
+  - :kbd:`Enter` / :kbd:`Space`
+
+- Hotkeys:
+
+  - :kbd:`Alt` + :kbd:`D`: apply deletions (remove all marked lines)
+  - :kbd:`Alt` + :kbd:`S`: save
+  - :kbd:`Alt` + :kbd:`R`: reload from disk
+  - :kbd:`Alt` + :kbd:`H`: toggle hide-noise display filter
+
+- :kbd:`Esc` closes (prompts if there are unsaved changes).
+
+Notes
+-----
+
+- Save writes both the working ``.txt`` file and its companion ``.json`` file.
+- Search in the trimmer shows whole matching work-order groups.
+- Alternating row colors are used to help distinguish adjacent work orders.