ui/phase-20: lock after Send + dashed tracks for in-flight & pending sends

Send joins Modernize / Dismantle / Transfer as a lockable command:
once any of the four lands in the draft for a group, every action
button on its inspector is disabled with a "command pending"
tooltip and the banner names the queued kind. Load / Unload /
Split / Join Fleet stay non-locking — they stack legitimately on
the engine side.

Two dashed overlays now run alongside the cargo-route arrows:

- Yellow dashed track for own in-space groups, drawn from the
  origin planet to the destination (matches the in-space point
  colour so eye reads both as one entity).
- Green dashed track for every wire-valid sendShipGroup command
  in the order draft, drawn from the source group's orbit planet
  to the chosen destination. Disappears when the command is
  removed from the order tab, when the engine rejects it, or
  when the group has left orbit (in-space track replaces it).

Both tracks are wrap-aware via torusShortestDelta and never
participate in hit-test.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

ui/PLAN.md

@@ -2177,14 +2177,15 @@ Artifacts:
   planet with colonists onboard (engine reference
   `controller/ship_group.go:177-179` — `UnloadColonists` is not
   called over a foreign planet, so the cargo is lost)
-- destructive-command lock: a `Modernize` / `Dismantle` /
-  `Transfer` order in the draft for a given group disables every
-  action button on that group's inspector and surfaces a banner
-  pointing to the order list. Cancelling the queued command in
-  the order tab releases the lock. Other commands (Send / Load /
-  Unload / Split / JoinFleet) do not lock — Send is naturally
-  followed by an out-of-orbit state at turn cutoff and the
-  remaining four can stack legitimately
+- state-changing-command lock: a `Send` / `Modernize` /
+  `Dismantle` / `Transfer` order in the draft for a given group
+  disables every action button on that group's inspector and
+  surfaces a banner pointing to the order list. Cancelling the
+  queued command in the order tab releases the lock. Load /
+  Unload / Split / JoinFleet do not lock — they stack legitimately
+  on the engine side. Send used to be unlocked too, but a queued
+  Send is the visible commitment to launch this orbit, so the
+  inspector treats it the same as the three destructive variants
 - `pkg/calc/ship.go.BlockUpgradeCost` (migrated from
   `game/internal/controller/ship_group_upgrade.go`) — the bridge
   rule says `ui/core/calc/` only wraps `pkg/calc/` formulas, so
@@ -2277,16 +2278,34 @@ Decisions during stage:
    after a destination is chosen; cancelling the picker leaves no
    form behind. Removing the destination control from the form
    keeps the surface to one editable field at any time.
-7. **Destructive-command lock**. Any `upgradeShipGroup`,
-   `dismantleShipGroup`, or `transferShipGroup` in the draft for a
-   given group id disables every action button on that group's
-   inspector with a "command pending" tooltip and renders a
-   banner pointing the player at the order list. Cancellation
-   from the order tab releases the lock. The three commands all
-   change the group's engine-side state at turn cutoff
-   (`StateUpgrade` / removal / `StateTransfer`), so any second
-   action would race the engine's pre-condition check anyway —
-   the lock surfaces that commitment up-front.
+7. **State-changing-command lock**. Any `sendShipGroup`,
+   `upgradeShipGroup`, `dismantleShipGroup`, or `transferShipGroup`
+   in the draft for a given group id disables every action button
+   on that group's inspector with a "command pending" tooltip and
+   renders a banner pointing the player at the order list.
+   Cancellation from the order tab releases the lock. All four
+   commands flip the group out of `StateInOrbit` at turn cutoff
+   (`StateLaunched` / `StateUpgrade` / removal / `StateTransfer`),
+   so any second action would race the engine's pre-condition
+   check anyway — the lock surfaces that commitment up-front.
+8. **Pending-Send map overlay**. A queued `sendShipGroup` for an
+   own group still in orbit renders as a green dashed line from
+   the orbit planet to the destination, drawn on the same
+   overlay layer as cargo-route arrows. The line is wrap-aware
+   (uses `torusShortestDelta`) and skipped when the engine has
+   marked the command `rejected` or `invalid`. Removed when the
+   group leaves orbit (Send applied) or the player cancels the
+   command from the order tab. Implemented in
+   `ui/frontend/src/map/pending-send-routes.ts`; the overlay
+   fingerprint in `lib/active-view/map.svelte` is extended so the
+   renderer's `setExtraPrimitives` re-runs on draft changes.
+9. **Yellow dashed track for own in-space groups**. The map
+   already drew the in-space group point in yellow (`0xfff176`);
+   Phase 20 adds the matching yellow dashed line from the origin
+   planet to the destination so the player reads "this group is
+   moving" even when zoomed out. Wrap-aware via the same torus
+   delta. Implemented in `ui/frontend/src/map/ship-groups.ts`
+   alongside the existing in-space point primitive.
 
 ## Phase 21. Sciences — CRUD List + Designer