feat(tyrant): add reign control panel

design/user-stories/index.md

@@ -14,3 +14,4 @@
 12. [US-012: Configure and persist game state](us-012-configure-and-persist-state.md)
 13. [US-013: Build, test, and release the plugin](us-013-build-test-and-release.md)
 14. [US-014: Use class ability items](us-014-use-class-ability-items.md)
+15. [US-015: Manage a reign through the Tyrant control panel](us-015-manage-tyrant-control-panel.md)

design/user-stories/us-003-progress-and-purchase-unlocks.md

@@ -19,9 +19,13 @@ As the **Tyrant**, I want to earn one meaningful choice for defeating the Vigila
 - [x] A purchase consumes exactly one unspent choice and cannot be duplicated by retries or concurrent input.
 - [x] Progress cannot be earned or spent while the game is paused.
 - [x] Levels, purchases, and unspent choices survive logout and restart but reset when the reign ends.
+- [x] The Tyrant can review and purchase unlocks through the Tyrant control panel.
+- [x] A confirmation displays the selected unlock and choice cost before purchase.
+- [x] The control panel refreshes the available choices immediately after a successful purchase.
 
 ## Related
 
 - [Role and class model](../concepts/role-and-class-model.md)
 - [Assign unlocked classes](us-004-assign-unlocked-classes.md)
 - [Purchase and use Tyrant abilities](us-009-use-tyrant-abilities.md)
+- [Manage a reign through the Tyrant control panel](us-015-manage-tyrant-control-panel.md)

design/user-stories/us-004-assign-unlocked-classes.md

@@ -19,8 +19,12 @@ As the **Tyrant**, I want to assign unlocked specialist classes so that I can bu
 - [x] Assignment and removal are stored by UUID and communicated clearly to affected players.
 - [x] A class holder is reminded of the assignment and its controls on login.
 - [x] All class assignments end when the Tyrant's reign ends.
+- [x] The Tyrant can assign and reassign purchased classes through the Tyrant control panel.
+- [x] The control panel's player selector communicates eligibility and identifies the current class holder before confirmation.
+- [x] Control-panel and command-based assignments enforce identical rules.
 
 ## Related
 
 - [Role and class model](../concepts/role-and-class-model.md)
 - [Use class ability items](us-014-use-class-ability-items.md)
+- [Manage a reign through the Tyrant control panel](us-015-manage-tyrant-control-panel.md)

design/user-stories/us-009-use-tyrant-abilities.md

@@ -19,8 +19,11 @@ As the **Tyrant**, I want permanent upgrades and limited roster intelligence so
 - [x] Intelligence counts the current Vigilante and living assigned Followers, whether online or offline, according to configurable counting rules.
 - [x] The Tyrant can inspect ability ownership and the remaining intelligence cooldown.
 - [x] Purchases and cooldowns survive restart and end with the Tyrant's reign.
+- [x] The Tyrant control panel shows purchased passive upgrades and the roster-intelligence readiness or remaining cooldown.
+- [x] The Tyrant can activate ready roster intelligence from the control panel and receive the result without revealing identities or locations.
 
 ## Related
 
 - [Progress and purchase Tyrant unlocks](us-003-progress-and-purchase-unlocks.md)
 - [Configure and persist game state](us-012-configure-and-persist-state.md)
+- [Manage a reign through the Tyrant control panel](us-015-manage-tyrant-control-panel.md)

design/user-stories/us-015-manage-tyrant-control-panel.md

@@ -0,0 +1,44 @@
+---
+type: User Story
+title: "US-015: Manage a reign through the Tyrant control panel"
+description: Give the active Tyrant a graphical control panel for inspecting and managing the current reign.
+status: done
+---
+
+# US-015: Manage a reign through the Tyrant control panel
+
+As the **Tyrant**, I want a control panel for my reign so that I can inspect progress, purchase unlocks, assign classes, and use abilities without memorizing commands.
+
+## Acceptance criteria
+
+- [x] The active Tyrant can open the control panel with `/tyrant menu`, and `/tyrant` with no arguments opens the same panel.
+- [x] A player who is not the active Tyrant cannot open or operate the control panel.
+- [x] When the active Tyrant joins while the event is running, the control panel opens automatically five seconds after login.
+- [x] Automatic opening is cancelled if the Tyrant disconnects, loses the Tyrant role, or the event pauses or stops during the five-second delay.
+- [x] Other players and pending Tyrant candidates do not receive the automatically opened control panel.
+- [x] Closing an automatically opened control panel does not cause it to reopen during the same login session.
+- [x] The Tyrant may open the control panel manually during the five-second delay without causing a second panel to open automatically.
+- [x] The main screen shows the Tyrant's level, unspent choices, purchased unlocks, class assignments, and roster-intelligence cooldown.
+- [x] Purchased, available, unavailable, and cooldown-gated actions are visually distinguishable and explain why they cannot currently be used.
+- [x] The Tyrant can navigate between overview, unlock, class-assignment, and ability screens and can close the panel without changing gameplay state.
+- [x] The Tyrant can review and purchase an available unlock after confirming the selected unlock and its choice cost.
+- [x] The Tyrant can select a purchased class and assign or reassign it to an eligible online player.
+- [x] The class player selector excludes the Tyrant and clearly identifies players who are opted out or otherwise ineligible.
+- [x] Class reassignment identifies the current holder and requires confirmation before replacing that holder.
+- [x] The Tyrant can activate roster intelligence from the panel when the ability is purchased and ready.
+- [x] A successful or rejected action refreshes the panel from authoritative current state and communicates the result clearly.
+- [x] Panel actions use the same domain rules and persistence behavior as their command equivalents.
+- [x] Stale, repeated, or concurrent panel interactions cannot duplicate purchases, bypass cooldowns, or create conflicting assignments.
+- [x] Panel actions become unavailable immediately if the game pauses, the reign ends, or the player is no longer the Tyrant.
+- [x] Existing `/tyrant choices`, `/tyrant buy`, `/tyrant assign`, and `/tyrant intelligence` commands remain available as alternatives.
+
+## Validation
+
+Automated tests verify command entry points, active-Tyrant authorization, authoritative overview state, the exact 100-tick login delay, lifecycle cancellation, and duplicate-opening prevention. The complete `./gradlew clean check jar` lifecycle passes.
+
+## Related
+
+- [Progress and purchase Tyrant unlocks](us-003-progress-and-purchase-unlocks.md)
+- [Assign unlocked classes](us-004-assign-unlocked-classes.md)
+- [Purchase and use Tyrant abilities](us-009-use-tyrant-abilities.md)
+- [Inform players and manage participation](us-011-inform-and-manage-participation.md)