v0.3.1 | 2026-05-09
* Ramp generation warnings now shown as a yellow icon next to the **Create Designations** button (tooltip contains the message):
- "Ramp generation failed — no valid path found."
- "Ramp placed but did not reach the surface — excavators may not be able to excavate."
- "Couldn't find a valid path from the tower to the generated ramp. Check for access problems."
* Increased generated ramp safety margin around nearby buildings by 1 tile. Landslide can still reach buildings if built on deep dirt/sand.
* Added a bottom-flattening pass to reduce rough/bumpy excavation floors; designations floor should now be noticeably flatter. Can be toggled on/off with **atd_set_bottom_flattening on/off**.
* Tuned default **Low** and **Med** ore purity thresholds to reduce the jump from **Off**; existing **ATDsettings.json** values are preserved. Added **atd_reset_to_defaults** to try built-in defaults in memory.
* Renamed the **Target product** label to **Scanning filter** to avoid confusion with mining priority.

v0.3.0 | 2026-05-08
* Corner designations can now be placed manually from within any terrain designation tool (**M**, **Z**, **N**) — use the new **▲**/**▽** toolbar buttons or press **K** (**K** again flips between outer/inner); supports height offset (**Q**/**E**), rotation (**R**), and auto-snap to neighbouring designations; vanilla designations also snap to corner designations
- Corner mode exits automatically when chosing one of the vanilla modes (flat/ramp) or the designation tool is deactivated
* Better quality thumbnail

v0.2.4 | 2026-05-04
* Settings file renamed from **settings.json** to **ATDsettings.json** to avoid conflicts with other mods
* Existing **settings.json** files are still read as a legacy fallback and migrated into the generated **ATDsettings.json** format
* **ATDsettings.json** is no longer distributed inside the mod ZIP — it is generated automatically in the mod folder on first run, populated with the current defaults and inline documentation
* Settings file now contains a **settingsVersion** stamp; when the mod version advances the file is automatically migrated (user values are preserved and any new keys are added)
* Added **atd_save_settings** console command to write the current in-memory global defaults back to **ATDsettings.json** at any time
* Added global defaults for whether the Terrain Designations and Ore Composition panels start expanded or collapsed, configurable via **ATDsettings.json** or console commands.
* Fixed Corridor clearance modifier-click handling so Shift/Ctrl jumps directly between Off and 2 instead of requiring multiple clicks.

v0.2.3 | 2026-05-03
* Added experimental Remove Debris scan support, available as a dedicated action and as an auto fallback when no useful product is found.

v0.2.2 | 2026-05-03
* Added concise license and attribution notices to source files and README.