feat(commands): add contextual completion and unlock listing

design/log.md

@@ -1,5 +1,9 @@
 # Spigot Stealth Design Log
 
+## 2026-09-04
+
+- **Completion**: Extended US-003 and US-004 with contextual, prefix-filtered command completion that suppresses generic player suggestions, plus an administrative list of all known online and offline unlocked players; verified the complete Gradle build and OKF bundle.
+
 ## 2026-08-14
 
 - **Completion**: Completed US-004 with exact known online and offline targeting, complete status, idempotent grants, confirmed resets, active concealment discovery, operator-default permissions, asynchronous persisted replies, and console audits; verified the full Gradle build.

design/user-stories/us-003-check-personal-progress.md

@@ -18,10 +18,12 @@ As a **player**, I want to check my stealth progress so that I know how close I
 - [x] Durations are presented in a concise, human-readable form.
 - [x] Repeated command use does not change progression or concealment state.
 - [x] The command has clear usage metadata and an appropriate player permission.
+- [x] `/stealth` tab-completes `progress`, filtered by the entered prefix.
+- [x] Unsupported argument positions return no suggestions instead of Bukkit's generic player list.
 
 ## Validation
 
-Automated tests verify concise duration formatting, live in-flight progress, configured target and remaining output, command non-mutation, and unlocked usage guidance. Command metadata and the complete `./gradlew clean check jar` lifecycle pass.
+Automated tests verify concise duration formatting, live in-flight progress, configured target and remaining output, command non-mutation, unlocked usage guidance, prefix-filtered completion, and suppression of irrelevant suggestions. Command metadata and the complete `./gradlew clean check jar` lifecycle pass.
 
 ## Related
 

design/user-stories/us-004-administer-player-stealth.md

@@ -24,10 +24,16 @@ As a **server administrator**, I want to inspect and correct player stealth stat
 - [x] Administrative inspection and modification require an operator-default administrative permission.
 - [x] State-changing operations persist before success is reported and are safe under retries.
 - [x] Grant and reset actions record the administrator, target UUID, and action in the server log without blocking the server tick thread.
+- [x] `/stealthadmin` tab-completes `status`, `grant`, `reset`, and `list`, filtered by the entered prefix.
+- [x] Target positions for `status`, `grant`, and `reset` suggest known player names, and reset's final argument suggests `confirm`.
+- [x] Administrative completions require the administrative permission, and irrelevant positions return no suggestions instead of Bukkit's generic player list.
+- [x] `/stealthadmin list unlocked` lists every known online or offline player with stealth unlocked.
+- [x] The unlocked list is sorted case-insensitively, identifies nameless records by UUID, and clearly reports when it is empty.
+- [x] Existing `/stealthadmin list` behavior continues to list currently concealed online players.
 
 ## Validation
 
-Automated tests verify exact offline name and UUID resolution, ambiguous and unknown rejection without record creation, complete status output, idempotent grants and notification, complete resets with presentation cleanup, online concealed-player filtering, confirmation and permission gates, persisted-before-success replies, and audit records. The complete `./gradlew clean check jar` lifecycle passes.
+Automated tests verify exact offline name and UUID resolution, ambiguous and unknown rejection without record creation, complete status output, idempotent grants and notification, complete resets with presentation cleanup, online concealed-player filtering, online and offline unlocked-player listing, contextual permission-gated completion, confirmation and permission gates, persisted-before-success replies, and audit records. The complete `./gradlew clean check jar` lifecycle passes.
 
 ## Related