Fix miner undock state transition

SESSION.md

@@ -13,6 +13,12 @@ The repository is now split into two apps that live side-by-side:
 
 The complete simulation runs in the backend. The viewer fetches one world snapshot, then subscribes to an SSE delta stream and renders the world as an observer.
 
+The world model is now hierarchical:
+
+- systems live in galaxy space
+- ships, stations, and resource nodes live in system-local space
+- the viewer applies a local presentation layer for the active system
+
 ## Runtime / Networking
 
 The backend currently provides:
@@ -28,6 +34,7 @@ The viewer currently does:
 2. connect to the stream
 3. apply deltas into a local render model
 4. interpolate and briefly extrapolate moving ships for presentation
+5. compose galaxy-space systems with system-local entities for rendering
 
 This supports multiple simultaneous observers on the same world. Interest management is not implemented yet, so every observer still receives full-world deltas.
 
@@ -44,29 +51,57 @@ The viewer currently supports:
 - `WASD` panning on the `XZ` plane
 - middle-mouse orbit camera
 - smooth wheel zoom across local, system, and universe scales
-- presentation fades between zoom bands instead of hard switches
+- layered system presentation
+  - one active local system with detailed content
+  - non-local systems projected as distant shell markers
 - procedurally animated planets and moons from orbital metadata
 - ringed planets, binary star presentation, and richer resource visuals
+- follow-camera behavior for selected ships
+- dedicated `System` and `Focus` panels on the right HUD
+- hover labels for projected system markers
+- a bottom ship list with horizontally scrolling ship cards
+  - card click selects and follows the ship
+  - cards show ship name, class, fuel, energy, state, and order
+- multiple floating history windows for debugging
+  - openable from ship cards
+  - independently movable and resizable
+  - copy-to-clipboard support with a DOM fallback path
 
-Universe-level presentation is now star-centric:
+Local presentation is now intentionally isolated:
 
-- solar-system internals fade out as the camera pulls back
+- only the active system renders local detail
-- star names remain readable
+  - ships
-- system summary panels show icon-plus-count rollups only when entities are present
+  - stations
+  - resource nodes
+  - planets
+  - moons
+- other systems render as distant stars plus compact summary presentation
+- projected systems can show shell reticles and hover labels
+- distant galaxy motion now has only minimal parallax while moving inside a system
 
 The viewer also includes plain-text HUD readouts for:
 
 - game state
 - network statistics
+- ship debugging history in separate floating windows
 
 The viewer now consumes richer celestial metadata from the backend:
 
 - star kind and star count
 - planet type, shape, moon count, and orbital elements
 - resource node source kind such as `asteroid-belt` and `gas-cloud`
+- galaxy-space system positions
+- system-local entity positions and velocities
 
 Planets and moons are not simulated as networked entities. Their positions are reconstructed client-side from snapshot time plus orbital configuration.
 
+Viewer-side orbital presentation now also applies to:
+
+- resource nodes
+- stations
+
+These orbitals prefer nearby planets or moons as anchors, with fallback to the system star.
+
 ## Simulation Status
 
 The backend simulation already includes:
@@ -75,6 +110,13 @@ The backend simulation already includes:
 - orbital travel
 - docking and undocking
 - mining and refinery delivery
+- module-gated ship and station capabilities
+  - ships require fitted modules such as reactor, capacitor, and mining or gun turrets
+  - stations require fitted modules such as power, refinery, and storage modules
+- fuel-to-energy power simulation
+  - ship reactors consume `gas` fuel to charge capacitors
+  - station power cores consume `gas` fuel to charge station energy buffers
+  - powered actions stop when fuel and energy are depleted
 - refining / fabrication
 - faction growth through ship and outpost production
 - pirate pressure and combat
@@ -83,6 +125,11 @@ The backend simulation already includes:
 - resource geography beyond simple ore nodes
   - asteroid belts for ore
   - gas clouds for gas
+- hierarchical coordinates for replication
+  - systems in galaxy space
+  - in-system entities in local space
+- item-based inventories for ships and stations
+  - ore, refined metals, gas fuel, and cargo now flow through per-item inventories instead of ad hoc stock fields
 
 The runtime model still follows the intended layered control architecture:
 
@@ -106,6 +153,29 @@ The runtime model still follows the intended layered control architecture:
 - added moon rendering in the viewer
 - added backend-generated asteroid belts and gas clouds as resource sources
 - injected the `Sol` system into the generated galaxy
+- refactored contracts from flat world coordinates to galaxy-space systems plus system-local entities
+- normalized authored scenario placements and patrol routes into system-local coordinates during load
+- added viewer-side local-focus / floating-origin style presentation for the active system
+- reworked local-vs-remote rendering so only one system shows detail at a time
+- added projected shell markers and hover labels for distant systems while inside a local system
+- added viewer-side orbital motion for stations and resource nodes
+- tuned local movement so the rest of the galaxy remains mostly fixed during in-system travel
+- reduced the starting faction to a minimal bootstrap
+  - one modular station
+  - one constructor ship
+  - one mining ship
+- moved the starting ships close to the `helios` star and next to each other
+- added modular ship and station data
+  - new station power and storage modules
+  - new ship reactor, capacitor, mining turret, and gun turret modules
+- refactored simulation inventories to per-item storage
+  - stations and ships now replicate inventories instead of specialized ore/refined/cargo counters
+- added fuel-driven power generation and energy consumption in the simulation loop
+- replaced the viewer bottom faction strip with a horizontal ship-card debugging rail
+- added movable, resizable, multi-window history panels in the viewer
+- fixed the auto-miner undock controller transition
+  - ships now keep their docked station link until the undock move actually completes
+  - this prevents auto-miners from falling into `idle` immediately after unloading
 
 ## Current Known Limitations
 
@@ -113,10 +183,16 @@ The runtime model still follows the intended layered control architecture:
   - no observer-scoped interest management yet
 - the viewer is still observer-focused
   - no command submission UI yet
-- system/universe transitions are improved but still need tuning in feel and art direction
+- local / projected / galaxy presentation is now workable but still needs tuning
+  - shell marker art direction and scaling still need polish
+  - local camera feel still needs iteration
+  - projected-system composition is still a viewer illusion, not a full multi-layer renderer
 - the galaxy is much larger now, so viewer performance and visual density need active tuning
 - moon rendering is procedural from counts, not authored moon-by-moon data
 - resource extraction behavior still treats all resource nodes generically
+- item inventories exist, but storage enforcement and module-slot restrictions are still lightweight
+  - cargo/storage compatibility is mostly data-convention driven
+  - hull-specific module restrictions are not enforced yet
 - piracy and faction growth are still functional rather than strategically deep
 - no persistence for saves, seeds, or reconnect state
 
@@ -128,18 +204,35 @@ The runtime model still follows the intended layered control architecture:
   - authoritative world state and stream coordination
 - [apps/backend/Simulation/SimulationEngine.cs](/home/jbourdon/repos/space-game/apps/backend/Simulation/SimulationEngine.cs)
   - simulation advancement
+  - snapshot / delta composition for galaxy-space systems and local-space entities
+  - inventory, fuel, and energy processing
+  - auto-miner undock state transition fix
 - [apps/backend/Simulation/ScenarioLoader.cs](/home/jbourdon/repos/space-game/apps/backend/Simulation/ScenarioLoader.cs)
   - faction bootstrap
   - galaxy generation
   - special systems
   - procedural celestial/resource content
+  - normalization of authored placements into system-local space
+  - minimal startup seeding for ships, station, and fuel
+- [apps/backend/Contracts/WorldContracts.cs](/home/jbourdon/repos/space-game/apps/backend/Contracts/WorldContracts.cs)
+  - snapshot and delta contract shape
+- [apps/backend/Simulation/RuntimeModels.cs](/home/jbourdon/repos/space-game/apps/backend/Simulation/RuntimeModels.cs)
+  - runtime vector math and world model
+  - per-item inventories on ships and stations
 - [apps/viewer/src/GameViewer.ts](/home/jbourdon/repos/space-game/apps/viewer/src/GameViewer.ts)
   - camera, selection, streaming integration, and presentation
+  - layered local/remote system presentation
   - orbital reconstruction and moon rendering
+  - projected shell markers and hover labels
+  - ship card list and multi-window history debugging UI
+- [apps/viewer/src/style.css](/home/jbourdon/repos/space-game/apps/viewer/src/style.css)
+  - HUD layout
+  - ship-card rail
+  - floating history window styling
 - [apps/viewer/src/api.ts](/home/jbourdon/repos/space-game/apps/viewer/src/api.ts)
   - snapshot fetch and SSE stream integration
 - [apps/viewer/src/contracts.ts](/home/jbourdon/repos/space-game/apps/viewer/src/contracts.ts)
-  - viewer-side snapshot contract for celestial metadata
+  - viewer-side snapshot contract for galaxy-space systems and local-space entities
 - [shared/data](/home/jbourdon/repos/space-game/shared/data)
   - scenario and world data definitions
 
@@ -149,3 +242,7 @@ Validation passing at the end of this session:
 
 - `dotnet build apps/backend/SpaceGame.Simulation.Api.csproj`
 - `cd apps/viewer && npm run build`
+
+## Last Commit
+
+- `1747d84`

apps/backend/Simulation/SimulationEngine.cs

@@ -960,10 +960,15 @@ public sealed class SimulationEngine
     }
 
     station?.DockedShipIds.Remove(ship.Id);
-    ship.DockedStationId = null;
     ship.State = "undocking";
     ship.Position = ship.Position.MoveToward(task.TargetPosition.Value, ship.Definition.Speed * deltaSeconds);
-    return ship.Position.DistanceTo(task.TargetPosition.Value) <= task.Threshold ? "undocked" : "none";
+    if (ship.Position.DistanceTo(task.TargetPosition.Value) > task.Threshold)
+    {
+      return "none";
+    }
+
+    ship.DockedStationId = null;
+    return "undocked";
   }
 
   private void AdvanceControlState(ShipRuntime ship, string controllerEvent)